Polymer modified bitumen (PMB), is one of the grades of bitumen that has been specifically developed and engineered. It is one of the bitumen grades that is used in the production of pavement, roads designed for heavy duty traffic, and roofing solutions for residential properties that can withstand extreme weather conditions. PMB is conventional bitumen that has had polymer added to it. This addition provides PMB with additional strength, high cohesiveness, and resistance to fatigue, stripping, and deformations, making it an ideal material for use in the construction of infrastructure. The formation of a polymer really results in the formation of a macromolecule via the combining of thousands of monomers (repeating units). Carbon and hydrogen are the fundamental building blocks of many different types of polymers. Long polymer chains may be made by connecting many carbon atoms to one another. 


Polymer Modified Bitumen (PMB) has polymer additions to improve its characteristics. Bitumen, a thick, black, sticky substance produced from crude oil distillation, is used to bond roads.

The addition of polymers to bitumen modifies its physical and chemical characteristics, making it more robust, resilient, and resistant to temperature fluctuations, rutting, cracking, and aging. PMB is utilized in road building, roofing, waterproofing, and other civil engineering applications.

Styrene-butadiene-styrene (SBS), styrene-butadiene rubber (SBR), ethylene-vinyl acetate (EVA), and polyethylene may change bitumen (PE). Polymer choice relies on PMB characteristics and application.

Polymers increase performance and endurance to bitumen, making it a desirable building material.

Petro Naft manufactures the highest quality Polymer Modified Bitumen PMB in different types and grades and exports them from Iran and the UAE to other countries around the world.

  • Iran Polymer Modified Bitumen ( Iran PMB )
  • UAE Polymer Modified Bitumen ( UAE PMB )


Delving into the intriguing journey of Polymer Modified Bitumen, or PMB, we must rewind the clock back to the early 20th century. This was when asphalt material science started making leaps in understanding and practicality. However, the birth of PMB, as we recognize it today, wasn’t until the 1930s when German inventors utilized polymers to enhance the properties of bitumen.

PMB’s existence traces back to the desire to improve bitumen’s durability and resilience, particularly for road construction. This new variant of bitumen, also known as modified bitumen or elastomer modified bitumen, provided a significant increase in performance. It extended the lifespan of roads, reducing maintenance frequency, and proved vital in withstanding diverse climatic conditions.

Progress in the field of PMB was slow yet steady during the mid-20th century. It wasn’t until the 1970s that PMB’s use took a real upswing, especially in Europe. This advancement was due to the commercial production of Styrene-Butadiene-Styrene (SBS) polymers, a critical component in PMB production. The new material provided enhanced elasticity, improved resistance to deformation, and heightened temperature stability.

In the early 2000s, with the development of the Functional Polymer Modified Bitumen (FunPMB), PMB started stepping into an era of sustainable and functional road building. The Functional PMB proved advantageous for their environmental benefits, including reduced emissions during production and installation, and noise reduction for the end-user.

Today, PMB is considered an essential tool in the construction industry, promising sustainability, durability, and superior performance. The journey of PMB reflects our constant pursuit for improvement and innovation, signifying the role of materials science in shaping our infrastructural future.

As we continue to traverse this road, we are equipped with the power of history and the promise of science, driving the evolution of products like PMB. Here’s to paving the way forward with Polymer Modified Bitumen, transforming landscapes and setting new standards in infrastructure development.


Polymer Modified Bitumen, a vital material in construction, particularly in paving and roofing applications, is known by several other names, including:

  1. Modified Bitumen
  2. Modified Asphalt
  3. Elastomer Modified Bitumen
  4. Plastomer Modified Bitumen
  5. PMB
  6. Bitumen Modifier (when the focus is on the additive)
  7. Thermoplastic Bitumen
  8. Rubberized Bitumen (particularly when using certain types of polymers)
  9. SBS Modified Bitumen (when Styrene-Butadiene-Styrene is the polymer used)
  10. APP Modified Bitumen (when Atactic Polypropylene is the polymer used)

These names all refer to Bitumen that has been altered by the addition of polymers to enhance its physical properties, including durability, flexibility, and resistance to environmental elements. The specific name used often depends on the type of polymer added or the application the modified bitumen is intended for.


The Harmonized System (HS) Code for Polymer Modified Bitumen falls under the category of 2715, specifically 27150000, which comprises bituminous mixtures based on natural asphalt, natural bitumen, petroleum bitumen, mineral tar or mineral tar pitch.

As for its chemical composition, PMB doesn’t have a specific chemical formula due to its complex, varied structure depending on the type of polymer used. However, the chemical formula for bitumen, which is the base material for PMB, is roughly C25H32. The specific structure and formula will change with the addition of polymers.

Likewise, due to the varied nature of the PMB depending on the specific polymer modification, there isn’t a single Chemical Abstracts Service (CAS) number applicable. The CAS number for Bitumen is 8052-42-4. Polymers used, such as APP or SBS, have their own CAS numbers: 9003-07-0 and 9003-55-8 respectively.


Polymer Modified Bitumen (PMB) is a composite material that consists of the following primary components:

  1. Bitumen: Bitumen, also known as asphalt, is a sticky, black, highly viscous liquid or semi-solid form of petroleum. It forms the base of PMB and is the component that provides the initial adhesive and waterproofing characteristics.

  2. Polymers: Polymers are added to the bitumen to improve its physical properties. There are primarily two types of polymers used:

    • Elastomeric Polymers: These polymers, including Styrene-Butadiene-Styrene (SBS) and Styrene-Butadiene Rubber (SBR), enhance the elastic properties of the bitumen, increasing its flexibility and resilience at both high and low temperatures.

    • Plastomeric Polymers: These polymers, such as Atactic Polypropylene (APP) and Ethylene Vinyl Acetate (EVA), provide increased rigidity and resistance to aging.

  3. Fillers: Materials like limestone, fly ash, or carbon black may be used as fillers to improve the stiffness and reduce the cost of the PMB.

  4. Additives: Various additives may be incorporated to further enhance the properties of the PMB. These can include antioxidants for improved resistance to aging, adhesion promoters for better bonding with the aggregate in road construction, and fire retardants for increased fire resistance in roofing applications.

  5. Stabilizers: To ensure the polymer doesn’t separate from the bitumen during storage or transport, stabilizers are added.

The specific composition of PMB can vary greatly depending on the intended application, the performance requirements, and the specific manufacturing process used. However, the goal is always to create a product that combines the adhesive and waterproofing properties of bitumen with the enhanced durability, flexibility, and resistance to environmental stresses provided by the polymers.


  1. PMB 120:


  • Penetration at 25°C: This grade has a relatively high penetration range of 90-150 (1/10mm under 100g for 5 seconds).
  • Softening Point: PMB 120 has a minimum softening point of 50°C.

Usage and Applications: Given its higher penetration, PMB 120 is likely to be more ductile and flexible, making it suitable for regions with colder climates or applications that require more pliability.

  1. PMB 70:


  • Penetration at 25°C: PMB 70 has a mid-range penetration value between 50-90.
  • Softening Point: Its softening point is a bit higher than PMB 120, with a minimum of 55°C.

Usage and Applications: PMB 70 can be considered an intermediate grade in terms of its rigidity and ductility. It could be ideal for temperate regions or applications that require a balance between flexibility and stability.

  1. PMB 40:


  • Penetration at 25°C: This grade has the lowest penetration range of 30-50, indicating it’s the least ductile among the three.
  • Softening Point: PMB 40 possesses the highest minimum softening point of 60°C among the three grades.

Usage and Applications: With its lower penetration and higher softening point, PMB 40 is likely to be the most rigid and stable of the three. It’s suitable for hotter climates or applications where resistance to softening and rutting is crucial.


There are many different ways to classify polymers, including whether they are natural or synthetic, the type of arrangement of monomers, the arrangement of chains, and the method of polymerization. However, from the perspective of the scientific community, the classification of polymers that is most useful is based on how they behave in terms of their applications and temperatures, and this classification is broken down into three subgroups:

  • Thermoplastic
  • Thermoset
  • Elastomer


These types of polymers are softened by heat and melted by heat and can take the shape of the mold, and by removing the cooled heat, they turn into a solid state, and this cycle can be repeated several times without changing the properties of the polymer. be repeated Polypropylene (PP), polyethylene (PE) and polystyrene (PS) are part of this category.


These are semi-solid polymers that harden due to the application of heat and are no longer soft and meltable, and are destroyed and lose their properties when heated continuously. In fact, if we examine the intermolecular force of these two groups of polymers, thermoplastics have a weak intermolecular force that can change the shape of the polymer by heating, but thermoset polymers have strong crosslinks that allow shaping and reprocessing. They do not exist. Polyester, polyurethane, resins and silicones are examples of this group.


The name elastomer is derived from the combination of two words, elastic polymer. Elastic means to be elastic, which means that when a force or stress is applied to elastomers, they first change their shape, and when the stress is removed, they rearrange their chains and return to their original state. One of the main features of these materials is having a very low glass transition temperature. That is, these materials are soft at low temperatures. (It should be noted that polymers are very hard and brittle below their glass transition temperature). All kinds of rubbers, including butadiene rubber, natural rubber, are members of this group.

classify polymers figure

Thermoplastic elastomers are another kind of polymer:

In addition to thermoplastic polymers and elastomer polymers, there is also a category of polymers known as thermoplastic elastomers. These thermoplastic elastomers are created by combining two different types of polymers. This is due to the fact that the beneficial characteristics of both groups are combined, resulting in the formation of a copolymer that is capable of making use of the primary and functional characteristics of both groups. For instance, elastomers are unable to melt and would be destroyed if heat is repeatedly applied, but thermoplastics have both the capacity to melt and the property of being plastic. Polyurethane, polyether-polyester copolymer, olefinic copolymer, and styrene block copolymers are the four primary categories of thermoplastic elastomers. Polyurethane is the most common kind. The findings of the final group have shown to be the most successful when combined with bitumen. In a nutshell, the thermoplastic nature of TPE polymers, in addition to their low viscosity at high temperature and their capacity to open up in bitumen, as well as many other important characteristics, have led to this polymer being recognized as the most effective modifier of the properties of bitumen. For instance, the styrene component of SBS polymer, which is a styrene-butadiene-styrene block copolymer and is an elastomer thermoplastic, is of the thermoplastic kind, while the butadiene component is of the elastomer variety.

The temperature at which butadiene rubber (PB) undergoes its glass transition is -70 degrees Celsius, but the temperature at which polystyrene undergoes its glass transition or softening temperature is 100 degrees Celsius. The thermal stability of this material is improved by combining these two polymers, which allows for a wider temperature range at which it can maintain its integrity. The usefulness of using SBS polymer to generate modified polymer bitumen has been shown, making it one of the best polymers, if not the greatest polymer, employed in the industry that produces bitumen and asphalt. Because a portion of it is composed of rubbers, which, thanks to their very low glass transition temperature, increase the performance of bitumen when exposed to low temperatures and throughout the winter.

Other polymers used:

One of the polymers that has garnered attention in the bitumen and asphalt sector nowadays is polyphosphoric acid. Another one of these polymers is polyethylene glycol. The combination of polyphosphoric acid and bitumen has been the subject of a significant amount of penetration, and the findings have revealed that even a minute quantity of this polymer can boost the softening point of bitumen by ten degrees and reduce the degree to which it can be penetrated by five degrees. Additionally, polyphosphoric acid may be used as a bitumen compatibilizer when combined with other polymers such as rubber powder; however, it is essential to keep in mind that a high-speed mixer is required for this process.


Because the temperature at which bitumen breaks is approximately -10 to -12 degrees, the use of bitumen in areas where the temperature drops below -12 degrees during the winter will cause the bitumen to break and create cracks on the asphalt surface. This is due to the fact that bitumen is both hard and fragile. Because of the usage of rubbers, the temperature at which asphalt will break may be lowered to as low as -30 degrees or even lower. This lowers the temperature at which cracks and other types of asphalt damage can occur during the winter. On the other hand, the addition of this polymer to bitumen causes a rise in the viscosity of the bitumen and a rise in the temperature at which it begins to soften at high temperatures and hot conditions. This helps to prevent the bitumen from becoming loose and rutting in asphalt. In point of fact, one of the reasons why bitumen and asphalt are modified with polymers is in order to make the roadway surface more durable in a variety of climates.

Normal bitumens develop fatigue cracks in a very short amount of time on roads that have a high traffic load; however, the usage of polymer-modified bitumen and asphalt enables us to have longer periods of time. For there to be no cracks in the asphalt and for the coating to be in good condition. Because of this, it is not necessary to apply protective asphalts while stamping and sealing the asphalt surface, which results in savings in both money and energy. When thermoplastics like polyethylene or polypropylene, which are examples of thermoplastics, are added to bitumen, the characteristics of the bitumen are improved, and the result is a higher softening point and a lower degree of penetration. Additionally, this component raises the high temperature at which PG or performance grade bitumen can be used, which results in improved performance of bitumen in tropical regions. However, the findings of the study and the experiments have shown that the use of polyethylene leads in the bitumen being more brittle at lower temperatures. It is important to keep in mind that the use of polyethylene polymer in colder places not only does not result in an improvement in the qualities of bitumen, but it actually degrades the substance.

In general, depending on the kind of polymer, bitumen may take on a variety of characteristics, and here are a few of those characteristics that we will mention:

1- Raising the bitumen’s soft point, which prevents asphalt from being rutted during the summer and when temperatures are high.

2- Lessening the degree to which the bitumen penetrates the asphalt, which stops moisture from getting into the asphalt infrastructure when it rains.

3- Raising the elasticity or reversibility of bitumen, which raises the bitumen’s resistance against permanent deformations and, more crucially, lowers the number of fractures produced by the cold during the winter season.

Advantage polymer modified bitumen chart


In a stirred tank, a bitumen component is heated to a temperature between 185° C. and 221° C. and a block copolymer composition is added while the bitumen component is being stirred to form a homogeneous mixture. This method produces a PMB polymer modified bitumen binder composition in the substantial absence of cross-linking agents. A cured polymer modified bitumen binder composition is created by mixing the block copolymer composition with the homogeneous mixture and keeping the temperature between 185° C and 221° C for a length of time between 4 hours and 30 hours. Different types of polymers are utilized in this procedure, and they are selected based on a certain formula.

polymer modified bitumen production process figure


typeGeneral Purpose or UseGeneric Examples
fillerFill voids and therefore reduce optimum asphalt content
Meet aggregate gradation specifications
Increase stability
Improve the asphalt cement-aggregate bond
Mineral filler
crusher fines
Portland cement
fly ash
Carbon black
extenderSubstituted for a portion of asphalt cement (typically between 20–35 % by weight of total asphalt binder) to decrease the amount of asphalt cement requiredSulfur
rubberIncrease HMA stiffness at high service temperatures
Increase HMA elasticity at medium service temperatures to resist fatigue cracking
Decrease HMA stiffness at low temperatures to resist thermal cracking
(see Figure 2)
Natural Latex
Synthetic latex
(e.g., Polychloroprene latex)
Block copolymer
(e.g., Styrene-butadiene-styrene (SBS))
Reclaimed rubber
(e.g., crumb rubber from old tires)
Ethylene acrylate copolymer
Ethyl-vinyl-acetate (EVA)
Polyvinyl chloride (PVC)
Ethylene propylene or EPDM
Rubber-Plastic CombinationsBlends of rubber and plastic
FiberImproving tensile strength of HMA Mixtures
Improving cohesion of HMA Mixtures
Permit higher asphalt content without the significant increase in the drain down
Rock wool
OxidantIncrease HMA stiffness after the HMA is placedManganese salts
AntioxidantIncrease the durability of HMA mixtures by retarding their oxidationLead compounds
Calcium salts
HydrocarbonRestore aged asphalt cement to current specifications
Increase HMA stiffness in general
Recycling and rejuvenating oils
Hard and natural asphalts
Antistripping AgentsMinimize stripping of asphalt cement from aggregatesAmines
Waste MaterialsReplace aggregate or asphalt volume with a cheaper waste productRoofing shingles
Recycled Tires


Polymer Modified Bitumen (PMB) specifications can vary depending on the intended use, such as roofing or paving, and the specific type of polymer used. However, there are some general characteristics and properties that are often specified:

  1. Penetration: This is a measure of the hardness or softness of the bitumen, assessed by the depth a standard needle penetrates into a bitumen sample under specific conditions. PMB typically has a lower penetration value than unmodified bitumen, indicating a harder material.

  2. Softening Point: The softening point is the temperature at which the bitumen becomes soft and less viscous. PMB generally has a higher softening point than unmodified bitumen, which means it can withstand higher temperatures before softening.

  3. Elastic Recovery: This measures the bitumen’s ability to recover its original shape after being stretched or deformed. For PMB, the elastic recovery should be high, often above 70%, indicating a high level of flexibility and resilience.

  4. Fatigue Resistance: PMB should exhibit excellent resistance to fatigue, meaning it can withstand repeated cycles of stress without failure.

  5. Rutting Resistance: PMB is expected to have a high resistance to rutting, which is deformation or grooving that occurs over time, particularly in high-temperature conditions or under heavy loads.

  6. Resistance to Aging: PMB should have a high resistance to aging, which means it can withstand exposure to the elements, including UV light and varying temperatures, without significant degradation over time.

  7. Compatibility: PMB should be compatible with the aggregates used in road construction or the materials used in roofing applications.

  8. Polymer Content: The amount and type of polymer used in the PMB must be specified. Common types include SBS (Styrene-Butadiene-Styrene) and APP (Atactic Polypropylene), and the polymer content is usually between 3-7%.

It’s important to note that specifications can vary by region and application, and different standards may apply. Examples of organizations that provide specifications for PMB include the American Association of State Highway and Transportation Officials (AASHTO), the Asphalt Institute, and the European Committee for Standardization (CEN). Always refer to local and application-specific guidelines when working with PMB.

S.NODesignationPMB 120PMB 70PMB 40Test Method
1Penetration at 25 ֯C, 1/10mm, 100g, 5 sec90-15050-9030-50ASTM D5
2Softening Point, (R&B), ֯C, Min505560ASTM D36
3Elastic Recovery at 15 ֯C ,%, Min 606060ASTM D6084
4Flash point , COC, ֯C , Min220220220ASTM D92
5Separation, Difference in Softening Point,(R&B), ֯C, Max333
Thin Film Oven Test & Test on Residue
7aLoss in Mass, %, Max1.01.01.0ASTM D1754
7bReduction in Penetration of residue at 25 ֯C , 100g, 5s, %,Max353535ASTM D5
7cIncrease in Softening Point, ֯C, Max765ASTM D36
7dElastic Recovery at 25 ֯C, %, Min505050ASTM D6085


Polymer Modified Bitumen (PMB) boasts several distinctive properties that set it apart from traditional bitumen. The addition of polymers enhances the bitumen’s original qualities and introduces new characteristics, making it suitable for a variety of applications.

  1. Enhanced Elasticity: PMB is more elastic than traditional bitumen, thanks to the inclusion of elastomeric polymers. This increased elasticity allows PMB to regain its original shape after being deformed, enhancing its resistance to rutting and fatigue cracking.

  2. Improved Durability: PMB exhibits superior durability. The polymers help protect the bitumen from the effects of aging, oxidation, and UV radiation, leading to a longer lifespan and improved performance over time.

  3. Greater Resistance to Temperature Extremes: PMB can withstand a broader range of temperatures without losing its structural integrity. It retains its flexibility in cold temperatures, reducing the risk of thermal cracking, and it is more resistant to softening and rutting in hot conditions.

  4. Increased Adhesion: PMB’s adhesive properties are improved, ensuring better bonding with aggregate materials in road construction or with roofing materials, contributing to the overall durability of the finished structure.

  5. Enhanced Resistance to Water Damage: PMB is more resistant to water damage than traditional bitumen. This quality makes it excellent for waterproofing applications and in environments where water damage could be a concern, such as roadways.

  6. High Skid Resistance: PMB has high skid resistance, making it a safe option for high-traffic roadways and other areas where skid resistance is important for safety.

  7. Superior Fatigue Resistance: PMB can handle repeated cycles of stress without failure, a crucial feature in applications like road construction where the material experiences constant loading and unloading from traffic.

These properties make PMB a preferred choice for applications demanding high-performance, longevity, and durability, such as road construction, roofing systems, and waterproofing projects.


Polymer Modified Bitumen (PMB) has wide-ranging applications due to its enhanced physical properties compared to traditional bitumen. Here are the key uses and applications:

  1. Road Construction: PMB is extensively used in road construction and pavement. Its high resistance to deformation, superior adhesion properties, and increased durability make it ideal for high-traffic areas, heavy-duty roads, highways, and airport runways. It’s also beneficial in regions with extreme temperature variations, as it can withstand both high and low temperatures without losing its effectiveness.

  2. Roofing Systems: PMB is a popular choice for waterproofing and roofing applications. It is commonly used in the form of bitumen membranes for flat or low-sloped roofs. The increased elasticity and flexibility provided by the polymers help the roofing material withstand temperature changes and structural movements without cracking or leaking.

  3. Bridge Construction: Due to its excellent adhesion properties and resistance to water, PMB is used as a waterproofing layer on bridges. It protects the underlying structure from water ingress, thereby increasing the lifespan of the bridge.

  4. Railway Systems: PMB is used in the construction of railway systems for sub-ballast matting. The use of PMB increases the stability and lifespan of the railway tracks.

  5. Insulation and Soundproofing: Due to its elasticity and density, PMB can also be used for insulation and soundproofing purposes in buildings.

  6. Dams and Reservoirs: PMB is used in waterproofing for dams, reservoirs, and other hydraulic structures. It is especially beneficial in providing an impermeable layer that withstands the pressure of water.

  7. Landfills: PMB is used in the lining of landfills to prevent the seepage of hazardous waste into the surrounding soil and water sources.

  8. Tunnel Construction: In tunnel construction, PMB is applied as a waterproofing layer to prevent water ingress which could potentially weaken the structure.

These applications take advantage of PMB’s superior properties, including its flexibility, adhesion, durability, and resistance to aging and varying temperatures. Always refer to manufacturer’s instructions and local regulations when using PMB in any application.


Polymer Modified Bitumen (PMB) is known for its enhanced durability compared to traditional bitumen, which makes it an excellent choice for applications such as road construction and roofing. This superior durability is primarily due to the addition of polymers, which alter the physical properties of the bitumen.

Key factors contributing to the durability of PMB include:

  1. Enhanced Elasticity: The addition of elastomeric polymers, such as Styrene-Butadiene-Styrene (SBS), provides PMB with superior elasticity. This allows it to return to its original shape after deformation, reducing the likelihood of permanent damage from repeated stress or strain, such as traffic loads in the case of roads.

  2. Improved Temperature Stability: PMB has a wider operational temperature range than traditional bitumen. It can withstand higher temperatures without softening, which helps to prevent rutting in hot weather. At the same time, PMB maintains flexibility at lower temperatures, reducing the risk of cracking in cold weather.

  3. Resistance to Aging: PMB demonstrates improved resistance to aging compared to traditional bitumen. This is largely due to the polymers, which provide protection against oxidation and UV radiation, slowing down the degradation process. As a result, PMB is able to maintain its performance characteristics for a longer period.

  4. Enhanced Adhesion: The improved adhesive properties of PMB mean that it bonds well with aggregate materials in road construction or with roofing materials. This enhanced adhesion helps to maintain the integrity of the finished product, thereby extending its lifespan.

  5. Fatigue Resistance: PMB exhibits excellent resistance to fatigue, meaning it can withstand repeated cycles of stress without failure. This is crucial in applications like road construction, where the material is subject to constant loading and unloading from traffic.

In summary, the durability of PMB, characterized by its resistance to deformation, aging, and fatigue, along with its superior temperature stability and adhesion, makes it a highly valuable material for various construction applications. This improved durability translates into a longer lifespan for roads and roofs, resulting in significant cost savings over time due to reduced maintenance and replacement needs.


The performance of Polymer Modified Bitumen (PMB) in its applications is significantly superior to traditional bitumen due to its enhanced physical properties. Here are key aspects of its performance:

  1. Improved Durability: As previously discussed, PMB is highly durable. It can withstand repeated loading and unloading, is resistant to aging and can endure wide temperature ranges, all contributing to an extended lifespan of the built infrastructure.

  2. Enhanced Elasticity and Flexibility: PMB, particularly those modified with elastomeric polymers, displays exceptional elasticity and flexibility. This trait allows PMB to rebound back to its original shape after deformation, which is essential in absorbing stresses and strains without cracking, especially in cold climates.

  3. Superior Temperature Stability: PMB maintains its performance over a wider temperature range. It resists rutting and softening at high temperatures and remains flexible to resist cracking at lower temperatures.

  4. Better Adhesion: PMB exhibits improved adhesion to aggregate materials in road construction, resulting in a better-quality surface with fewer instances of stripping or dislodging of the aggregates.

  5. Greater Resistance to Water Damage: PMB has excellent water resistance, reducing the risk of water damage and associated issues such as potholes in roads and leaks in roofs.

  6. Improved Skid Resistance: PMB offers better skid resistance, improving safety in road applications.

  7. Noise Reduction: Certain PMB mixtures can also help reduce traffic noise, contributing to improved living conditions in urban environments.

In summary, the enhanced performance of PMB over traditional bitumen makes it an ideal choice for a range of construction applications, particularly in road surfacing and roofing. These performance benefits translate into safer, more durable, and cost-effective infrastructure.


Handling and using Polymer Modified Bitumen (PMB) involve some potential hazards, and safety precautions must be taken to protect workers and the environment. Here are some safety tips:

  1. Heat Safety: PMB is usually heated before use to improve its workability. Extreme care must be taken while heating to avoid overheating or spillage, which could cause burns or fires. Ensure you have adequate personal protective equipment, including heat-resistant gloves and clothing.

  2. Ventilation: When heated, PMB can emit fumes which can be harmful if inhaled. Ensure the area is well-ventilated, and consider using appropriate respirator masks.

  3. Skin Protection: Direct contact with PMB can cause skin burns. Workers should wear suitable protective clothing, gloves, and safety footwear.

  4. Eye Protection: Splashes from heated PMB can cause serious eye injury. Always wear safety goggles or a full-face shield when handling hot PMB.

  5. Safe Storage: PMB should be stored in a cool, well-ventilated area away from direct sunlight, extreme heat, and ignition sources. The storage area should be free of flammable materials.

  6. Handling Spills: In the event of a spill, isolate the area and prevent the PMB from entering drains or watercourses. Use sand or another absorbent material to contain the spill.

  7. Equipment Maintenance: Regularly check and maintain all equipment used in the heating, mixing, and application of PMB. This includes boilers, pumps, mixers, and application tools.

  8. Training: Ensure all workers are adequately trained in the safe handling, use, and storage of PMB. They should also be trained in emergency procedures in case of accidents.

  9. First Aid: Have appropriate first aid supplies available and ensure workers are trained in how to use them. In the case of skin or eye contact with hot PMB, immediately cool the area with plenty of cold water and seek medical attention.

By following these safety guidelines, potential risks associated with handling and using PMB can be significantly reduced. Always comply with local regulations and manufacturer’s instructions for the specific product you are using.


Installing Polymer Modified Bitumen (PMB) requires a specific process, whether it’s being used for paving roads or in roofing applications. Here are general steps for both applications:

Road Construction:

  1. Preparation: The construction area should be appropriately prepared. This usually involves cleaning the area, leveling the ground, and ensuring proper drainage.

  2. Heating and Mixing: The PMB is heated to a specified temperature (usually around 150-180°C), and then mixed with aggregate materials in a hot mix plant. The exact ratio of PMB to aggregate varies depending on the specifications of the project.

  3. Transport and Laying: The hot mix is transported to the site and spread evenly using a paving machine. The thickness of the layer depends on the design of the pavement.

  4. Compaction: After laying the mix, it’s compacted using a roller. This compaction is critical as it determines the strength and durability of the road.

  5. Curing: The finished road must be allowed to cool and cure before it’s opened to traffic. This can take several hours to a day, depending on the weather and the specifics of the mix.

Roofing Application:

  1. Surface Preparation: The roof surface should be clean, dry, and free of any debris. Any repairs or modifications to the roof structure should be done prior to the installation.

  2. Base Sheet Installation: A base sheet is usually installed first and secured to the roof deck.

  3. Bitumen Heating: The PMB is heated in a kettle or tanker until it’s in a liquid state, typically around 190-220°C, but this can vary based on the specific PMB product used.

  4. Applying the Bitumen: The hot PMB is applied to the base sheet. This can be done using mops, mechanical spreaders, or sprayers.

  5. Membrane Application: A bitumen-compatible membrane is then applied to the hot PMB. The membrane is usually pressed or rolled into the PMB to ensure good adhesion.

  6. Seam Treatment: Seams between rolls of the membrane are treated with additional PMB to ensure a watertight seal.

  7. Surface Protection: A protective layer of gravel, pavers, or a reflective coating may be applied to protect the PMB from UV radiation and mechanical damage.

  8. Inspection: The roof should be inspected to ensure proper installation.

Remember, these are generalized steps. Always refer to manufacturer’s instructions and local building codes when installing PMB in any application. Also, safety precautions must be taken during installation, including protection against high-temperature material.


Proper maintenance is crucial for structures made with Polymer Modified Bitumen (PMB) to extend their lifespan and ensure optimal performance. Here are general maintenance practices for roads and roofing systems made with PMB:

Road Maintenance:

  1. Regular Inspections: Regularly inspect the road surface for signs of damage, such as cracks, potholes, or rutting. Early identification of these issues can prevent more significant damage and costly repairs.

  2. Prompt Repairs: When damage is detected, it should be repaired promptly to prevent further degradation. This might involve patching potholes, sealing cracks, or in some cases, resurfacing the road.

  3. Surface Treatments: Regular surface treatments, such as fog seals or slurry seals, can extend the road’s lifespan by providing a protective layer that helps resist oxidation and seals minor cracks.

  4. Drainage Maintenance: Proper drainage is essential for the longevity of a road. Regularly clean and maintain drainage systems to prevent water from accumulating on the road surface, which can lead to water damage.

Roofing System Maintenance:

  1. Regular Inspections: Inspect the roof regularly for signs of damage or wear, including blisters, cracks, or leaks. Also, check flashings and other roof details for any signs of damage or degradation.

  2. Debris Removal: Keep the roof surface clean and free from debris. Accumulated debris can trap moisture, leading to water damage.

  3. Prompt Repairs: Any identified issues should be addressed promptly to prevent further damage. Depending on the problem, this could involve patching, resealing seams, or replacing damaged sections of the roof membrane.

  4. Gutter Maintenance: Regularly clean and maintain the gutter system to ensure proper water drainage. Clogged gutters can lead to water accumulation and potential water damage to the roof.

In all cases, safety is paramount. Maintenance activities should be carried out by trained professionals using appropriate safety measures. Always refer to the manufacturer’s guidelines for specific maintenance procedures and practices for PMB.


The asphalt industry has seen a significant shift with the advent of Polymer Modified Bitumen (PMB), a product offering superior characteristics and performance compared to traditional bitumen. However, it is crucial for both industry players and customers to understand the dynamics of the Polymer Modified Bitumen (PMB) price, which fluctuates based on several influencing factors.

The Polymer Modified Bitumen (PMB) price list is not fixed and varies depending on the complexity of production, the quality and type of polymers used, and the prevailing market conditions. Therefore, tracking the price of Polymer Modified Bitumen (PMB) can be challenging.

Factor 1: Raw Materials Cost The most critical cost driver in the price list of Polymer Modified Bitumen (PMB) is the cost of raw materials. It includes the cost of bitumen and the cost of polymers, primarily styrene-butadiene-styrene (SBS) or atactic polypropylene (APP).

Factor 2: Production Complexity PMB production is a complex process that involves mixing bitumen with selected polymers at high temperatures. The more complex the production process, the higher the price of Polymer Modified Bitumen (PMB).

Factor 3: Global Market Conditions The global crude oil market heavily influences the cost of bitumen, and subsequently, the Polymer Modified Bitumen (PMB) price list. Political tensions, trade wars, or disruptions in oil supply can all impact the price.

Factor 4: Supply and Demand PMB’s price is also subject to supply and demand principles. Increased demand, especially in developing countries investing in road infrastructure, can increase the Polymer Modified Bitumen (PMB) price.

Factor 5: Quality of the Product The quality of the polymers used and the overall quality of the PMB can influence the price. Higher-quality PMB often commands a higher price due to its increased durability and performance.

In summary, companies like Petro Naft, Shell, and Exxon Mobil, renowned producers of PMB, constantly monitor these influencing factors to set competitive prices. At Petro Naft, we are dedicated to providing high-quality PMB at the best possible price, keeping in mind the dynamics of the Polymer Modified Bitumen (PMB) price.

Polymer Modified Bitumen (PMB) Manufacturers and Suppliers

The growing demand for durable and high-performance road materials has seen a rise in Polymer Modified Bitumen (PMB) manufacturers and suppliers globally. This review provides an overview of some key global players and what they offer to the industry.

  1. Petro Naft: As one of the notable Polymer Modified Bitumen (PMB) manufacturers, we at Petro Naft provide high-quality PMB suitable for a wide range of road applications. We are well-located to serve customers globally and locally, being a nearby Polymer Modified Bitumen (PMB) manufacturer for many firms.
  2. Shell: Known as a giant in the oil and gas industry, Shell is also one of the leading Polymer Modified Bitumen (PMB) suppliers. They offer various grades of PMB tailored for different applications and weather conditions.
  3. Exxon Mobil: This global powerhouse has a robust supply chain and is one of the major Polymer Modified Bitumen (PMB) manufacturers. Exxon Mobil focuses on providing PMB with enhanced durability and resistance to rutting.
  4. Total: With factories located worldwide, Total is well-positioned to supply high-quality PMB. Their products are known for providing excellent adhesion and improving the lifespan of road surfaces.
  5. Sinopec: As one of the largest oil refiners in Asia, Sinopec is a top-notch Polymer Modified Bitumen (PMB) supplier. They offer PMB that ensures maximum road durability, particularly in regions experiencing extreme weather conditions.

It’s important to note that the PMB industry is quite diverse, with numerous producers, factories, and firms involved. The choice of a Polymer Modified Bitumen (PMB) manufacturer or supplier should depend on factors such as product quality, pricing, and the reliability of the supplier. Hence, at Petro Naft, we continue to work tirelessly to offer our clients superior PMB products at competitive prices.

Where To Buy Polymer Modified Bitumen (PMB)

For any construction or infrastructure project requiring high-quality asphalt, determining where to buy Polymer Modified Bitumen (PMB) is crucial. With numerous options available, this guide outlines the best approaches to buy Polymer Modified Bitumen (PMB).

  1. Direct from Manufacturers: The most straightforward way to purchase Polymer Modified Bitumen (PMB) is to buy directly from the manufacturers. Established PMB producers like Petro Naft, Shell, and Exxon Mobil offer direct sales of their products, ensuring you get quality materials at competitive prices.
  2. Through Authorized Distributors: PMB manufacturers often have a network of authorized distributors to reach customers globally. They can provide local support and may offer additional services like transportation and storage.
  3. Online Platforms: With the digitalization of the business landscape, several online platforms now facilitate the procurement of industrial products. These platforms can provide a broader range of choices, allowing you to compare prices and quality before making a purchase.
  4. Industry Tradeshows and Expos: These events are an excellent opportunity to meet PMB manufacturers and suppliers in person, discuss your specific needs, and negotiate pricing and terms directly.
  5. Local Resellers: Depending on your location, local resellers or retail stores may stock PMB. This option can be convenient, especially for smaller quantities, but do verify the authenticity and quality of the products.

At Petro Naft, we are committed to making the procurement process as smooth as possible for our customers. We provide a variety of purchasing methods, giving you flexibility and assurance in knowing you’re getting top-quality PMB. Please reach out to us to discuss your needs and find out how we can best assist you.

Iran Polymer Modified Bitumen (PMB) Price

Iran is one of the leading producers of bitumen, a byproduct of oil refining, and a key ingredient in PMB. As such, the Iran Polymer Modified Bitumen (PMB) price plays a significant role in the global market.

As of recent market trends, the Iranian Polymer Modified Bitumen (PMB) price has been influenced by several factors:

  1. Increased Demand: As Iran continues to invest in infrastructure development, the demand for PMB within the country is increasing, thereby affecting the Polymer Modified Bitumen (PMB) market price in Iran.
  2. Global Crude Oil Prices: The cost of bitumen, and subsequently PMB, is heavily influenced by global crude oil prices. Any fluctuation in these prices directly impacts the Iran Polymer Modified Bitumen (PMB) price.
  3. Sanctions and Political Climate: Geopolitical issues, such as sanctions on Iran’s oil industry, can create uncertainty and affect the availability and pricing of PMB.
  4. Quality and Production Costs: The type and quality of polymers used in PMB manufacturing also factor into the overall cost. High-quality polymers typically result in higher production costs, which can lead to an increase in the Iranian Polymer Modified Bitumen (PMB) price.

Looking ahead, we can expect the Iran Polymer Modified Bitumen (PMB) price to remain subject to these influencing factors. However, advancements in production processes and the increasing efficiency of PMB manufacturing could lead to a stabilization of prices in the long term.

In the Iranian market, companies like Petro Naft continue to provide top-quality PMB at competitive prices. As a leading PMB manufacturer, Petro Naft is committed to meeting the demands of the local and international markets, despite the dynamic pricing trends.

Polymer Modified Bitumen (PMB) Manufacturers and Suppliers in Iran

As one of the world’s leading oil-producing nations, Iran is home to numerous Polymer Modified Bitumen (PMB) manufacturers and suppliers. These companies offer a wide range of PMB products suitable for various applications.

  1. Petro Naft: At Petro Naft, we are proud to be among the top Iran Polymer Modified Bitumen (PMB) manufacturers. We offer high-quality PMB sourced from our well-equipped refineries and plants, positioning us as a reliable PMB seller in Iran.
  2. Jey Oil Refining Company: This company is one of the significant players in the Iranian PMB market. They operate several refineries across the country, offering a variety of PMB grades.
  3. Pasargad Oil Company: Known as a prominent Polymer Modified Bitumen (PMB) manufacturer in Iran, Pasargad Oil Company operates multiple modern plants, ensuring high-quality PMB production.
  4. Tehran Oil Refining Company: As one of the oldest refining companies in Iran, they offer an extensive range of petroleum products, including PMB, serving both domestic and international markets.
  5. Arak Oil Refining Company: Their location in the central region of Iran positions them strategically to serve as a Polymer Modified Bitumen (PMB) supplier in Iran, offering a wide range of PMB grades.

While there are many Polymer Modified Bitumen (PMB) sellers in Iran, choosing the right supplier requires careful consideration of factors such as product quality, customer service, and pricing. At Petro Naft, we take pride in offering exceptional products and services, which solidify our position as one of the leading PMB manufacturers and suppliers in Iran.

Stay updated with the latest prices of our wide range of Petronaft bitumen types. Explore the information on this page for weekly price updates and make informed decisions for your projects:

Price of Various Types of Bitumen in Asia

We produce Polymer Modified Bitumen PMB of the best quality in a variety of types and grades and export them from Iran and the United Arab Emirates to other nations worldwide.

  • Polymer Modified Bitumen Iran ( PMB Iran )
  • Polymer Modified Bitumen Emirates ( PMB Emirates )


New Steel Drum


Transporting and storing Polymer Modified Bitumen (PMB) in drums involves specific considerations to maintain the material’s quality and ensure safety. Here are some general guidelines:


  1. Proper Loading: Drums should be securely loaded onto the transport vehicle to prevent movement during transit, which could lead to damage or spillage.

  2. Temperature Control: While PMB in drums doesn’t need to be kept hot during transit like it would in tankers, it should be protected from extreme temperatures that could affect its quality.

  3. Safety Precautions: The transport vehicle should be equipped with necessary safety equipment, including fire extinguishers and first aid kits. Drivers should be trained in handling emergencies and the safe unloading of the drums.


  1. Cool, Dry Area: PMB drums should be stored in a cool, dry area away from direct sunlight and heat sources. Extreme temperatures could lead to the degradation of the PMB.

  2. Upright Position: Drums should always be stored in an upright position to prevent leaks. They should be placed on a flat and stable surface.

  3. Proper Ventilation: If stored indoors, the storage area should be well ventilated to disperse any fumes that might escape from the drums.

  4. Avoid Water Contamination: The storage area should be free from flooding or water ingress. Water can contaminate the PMB if it enters the drum.

  5. Regular Inspection: Drums should be regularly inspected for leaks or damage. Any compromised drums should be isolated and dealt with appropriately.

  6. Safety Measures: Firefighting equipment should be available near the storage area. Personnel should be trained on handling PMB safely, including understanding the risks of overheating the material.

  7. Shelf Life: Even when stored properly, PMB has a shelf life. Typically, it should be used within six months from the date of production. Over time, oxidation and other factors can alter the PMB’s properties.

These guidelines are general and may not apply to every situation. Always follow the manufacturer’s instructions and local regulations when transporting and storing PMB.

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Frequently Asked Questions About POLYMER MODIFIED BITUMEN

To download the MSDS of Polymer Modified Bitumen (PMB), you can click the "INFORMATION REQUEST AND PRODUCT SAMPLE" button below the product photos. We will send you the necessary information as soon as possible, or use the "ANY QUESTION?" form on the bottom right of the page.

To download the TDS of  Polymer Modified Bitumen (PMB), you can click the "INFORMATION REQUEST AND PRODUCT SAMPLE" button below the product photos. We will send you the necessary information as soon as possible, or use the "ANY QUESTION?" form on the bottom right of the page.

To download the specification PDF of Polymer Modified Bitumen (PMB), you can click the "INFORMATION REQUEST AND PRODUCT SAMPLE" button below the product photos. We will send you the necessary information as soon as possible, or use the "ANY QUESTION?" form on the bottom right of the page.

2 Responses

  1. polymer modified bitumen

    Assalamu Alaikum.
    I am Engr. Abid from Bangladesh.
    Our country is using this polymer modified bitumen for road construction. We want to buy Polymer modified bitumen from your company.
    Can you please give more information about your product like specification price etc.

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