BR-544 RUBBER

BR-544 rubber is a high-cis polybutadiene rubber produced through neodymium-catalyzed polymerization of 1,3-butadiene.
BR-544 rubber is a synthetic rubber produced by the polymerization of the monomer butadiene.
BR-544 rubber is widely used in tire tread and sidewall compounds, industrial rubber goods, footwear soles, conveyor belts, and impact-modified polymer blends.

CAS Number: 9003-17-2
EC Number: 618-370-2
Molecular Formula: (C4H6)n

Synonyms: High-Cis Polybutadiene Rubber, Neodymium Polybutadiene, Nd-BR (Neodymium Butadiene Rubber), Cis-1,4-Polybutadiene, High Resilience BR, Synthetic Butadiene Elastomer, High Performance BR Polymer, Rare-Earth Catalyzed BR, 1,3-Butadiene Homopolymer Rubber, High Elasticity Polybutadiene, Industrial Grade Polybutadiene, Elastomeric Polybutadiene Compound

BR-544 rubber is a high-cis polybutadiene rubber produced through neodymium-catalyzed polymerization of 1,3-butadiene.
BR-544 rubber is characterized by a very high 1,4-cis microstructure, which provides excellent elasticity, low glass transition temperature (Tg), and outstanding resilience.
BR-544 rubber exhibits good a rubberasion resistance, high tensile strength when properly compounded, and superior performance at low temperatures compared to conventional emulsion-polymerized BR-544 rubber grades.

Due to its controlled molecular weight distribution and optimized Mooney viscosity, BR-544 rubber offers good processability in mixing, extrusion, and molding operations.
BR-544 rubber is widely used in tire tread and sidewall compounds, industrial rubber goods, footwear soles, conveyor belts, and impact-modified polymer blends.
BR-544 rubber's high rebound resilience and wear resistance make it particularly suitable for dynamic applications where fatigue resistance and durability are required.

BR-544 rubber is a synthetic rubber produced by the polymerization of the monomer butadiene.
BR-544 rubber is one of the most important synthetic rubbers due to its unique properties and wide range of applications.

A product of 1,3-butadiene polymerization in aliphatic hydrocarbons medium over neodymium compounds based catalyst system

BR-544 rubber is essentially a polymerization product of butadiene in solution.
BR-544 rubber contains no nitrosamines and substances that may become a source of nitrosamines.

Density of all grades of the BR-544 rubber is 0.90 - 0.92 g/cm3 (@ +25 °С).
BR-544 rubber is rubber which gives the following properties: high wear due to the low coefficient of friction and strength properties, excellent elastic properties and low hysteresis loss, resistance to low temperatures.
The main field of BR-544 rubber application is tire industry.

Types of Polybutadiene Rubber:

There are primarily two types of butadiene rubber:

Polybutadiene Rubber (BR-544 rubber):
BR-544 rubber is a high-cis polybutadiene homopolymer produced from 1,3-butadiene using neodymium catalyst technology.
BR-544 rubber offers excellent resilience, aBR-544 rubberasion resistance, and elasticity, making it suitable for applications such as tire manufacturing, industrial rubber goods, footwear soles, and dynamic mechanical components.

Styrene-Butadiene Rubber (SBR-544 rubber):
SBR-544 rubber is a copolymer produced from styrene and butadiene monomers.
SBR-544 rubber combines the characteristics of both components, providing improved aBR-544 rubberasion resistance, aging stability, and good processability compared to standard polybutadiene grades.
SBR-544 rubber is commonly used in tire treads, shoe soles, and applications requiring a balanced performance profile.

Applications of BR-544 Rubber:

Tire Manufacturing:
BR-544 rubber is used in the tread and sidewalls of tires due to its high resilience and low rolling resistance.

Footwear:
BR-544 rubber is used in the soles of shoes for durability and comfort.

Golf Balls:
BR-544 rubber provides elasticity and impact resistance for the core of golf balls.

Automotive Parts:
BR-544 rubber is used in hoses, belts, seals, and gaskets for its durability and wear resistance.

Industrial Applications:
BR-544 rubber is used in conveyor belts, viBR-544 rubberation mounts, and other industrial products requiring high durability.

Plastic Modification:
BR-544 rubber added to plastics to enhance impact resistance.

Adhesives and Sealants:
BR-544 rubber is used in rubber-based adhesives for tapes and labels due to its good tack and peel strength.

Uses of BR-544 Rubber:
BR-544 rubber is a type of polymer that stands out with its high elasticity and impact resistance.
BR-544 rubber is particularly preferred due to its tensile strength, low-temperature flexibility, and aBR-544 rubberasion resistance.

BR-544 rubber's similarity to isoprene makes it an alternative to natural rubber.
One of BR-544 rubber's most notable features is its ability to maintain its structure even at low temperatures, exhibiting long-lasting performance.

Also possessing strong chemical resistance, BR-544 rubber offers flexible solutions in many different sectors.
BR-544 rubber's high rebound property significantly improves its shock absorption capabilities.
BR-544 rubber is utilized in numerous applications due to its unique properties.

Here are the primary uses:

Tire Manufacturing:

Treads:
BR-544 rubber is used in tire treads for its high resilience, which improves fuel efficiency and tire longevity.

Sidewalls:
BR-544 rubber's durability and resistance to cracking make it suitable for tire sidewalls.

Footwear:

Soles:
The wear resistance and comfort provided by BR-544 rubber make it ideal for shoe soles.

Golf Balls:

Cores:
BR-544 rubber’s elasticity and impact resistance are essential for the core of golf balls, enhancing performance and durability.

Automotive Parts:

Hoses and Belts:
BR-544 rubber's durability and wear resistance make BR-544 rubber suitable for automotive hoses and belts.

Seals and Gaskets:
BR-544 rubber is used in various seals and gaskets due to its good aging resistance and flexibility.

Industrial Applications:

Conveyor Belts:
BR-544 rubber’s high wear resistance and durability make it suitable for conveyor belts.

ViBR-544 rubberation Mounts:
BR-544 rubber's ability to absorb viBR-544 rubberations makes BR-544 rubber ideal for use in mounts and dampers.

Rollers and Tubing:
BR-544 rubber is employed in various industrial rollers and tubing for its wear resistance and flexibility.

Plastic Modification:

Impact Modifiers:
BR-544 rubber is added to plastics like polystyrene and ABS to enhance impact resistance.

Adhesives and Sealants:

Rubber-Based Adhesives:
BR-544 rubber is used in pressure-sensitive adhesives for tapes and labels due to its good tack and peel strength.

Miscellaneous Applications:

Sporting Goods:
BR-544 rubber is used in various sporting goods for its resilience and impact resistance.

Rubber Bands:
BR-544 rubber's elasticity makes BR-544 rubber suitable for manufacturing rubber bands.

Cable Insulation:
BR-544 rubber provides flexibility and durability for electrical cable insulation.

Characteristics of BR-544 Rubber:

High Resilience:
BR-544 rubber has excellent elasticity and high rebound, making it suitable for applications requiring high flexibility.

Low Glass Transition Temperature:
This allows BR-544 rubber to remain flexible and elastic even at low temperatures, making it suitable for cold climates.

Wear Resistance:
BR-544 rubber is highly resistant to aBR-544 rubberasion, which is crucial for applications involving high wear and tear.

Low Hysteresis:
BR-544 rubber has low energy loss, which improves the efficiency of products like tires by reducing rolling resistance.

Good Aging Resistance:
When combined with antioxidants and stabilizers, BR-544 rubber shows good resistance to aging and fatigue.

Advantages of BR-544 Rubber:

High Elasticity:
BR-544 rubber provides excellent rebound resilience due to its high 1,4-cis content, making it ideal for dynamic applications.

Superior ABR-544 rubberasion Resistance:
BR-544 rubber offers strong resistance to wear and tear, especially in tire tread and industrial rubber components.

Low Temperature Flexibility:
BR-544 rubber maintains flexibility and mechanical performance at low temperatures because of its low glass transition temperature (Tg).

High Fatigue Resistance:
BR-544 rubber performs well under repeated stress and cyclic loading, reducing crack formation and extending service life.

Good Processability:
BR-544 rubber controlled Mooney viscosity and molecular weight distribution allow efficient mixing, extrusion, and molding.

Enhanced Mechanical Strength:
BR-544 rubber develops high tensile strength and tear resistance when properly compounded with fillers and curing systems.

Improved Dynamic Properties:
BR-544 rubber exhibits low heat build-up during deformation, which enhances durability in high-speed or high-load applications.

Compatibility in Blends:
BR-544 rubber can be easily blended with natural rubber (NR), SBR-544 rubber, and other elastomers to optimize compound performance.

Stability and Reactivity of BR-544 Rubber:

Chemical stability:
Chemically stable under normal storage and handling conditions.

Reactivity:
May react with strong oxidizing agents.

Conditions to avoid:
Excessive heat.
Open flames.

UV exposure.
Prolonged oxygen contact.

Incompatible materials:
Strong oxidizers.
Peroxides.

Hazardous decomposition products:
Carbon monoxide.
Carbon dioxide.
Irritating fumes during combustion.

Handling and Storage of BR-544 Rubber:

Handling:
Avoid excessive dust formation during cutting or grinding.
Use good industrial hygiene practices.

Storage:
Store in a cool, dry, well-ventilated area away from heat and direct sunlight.
Keep material wrapped to prevent contamination and oxidation.

First Aid Measures of BR-544 Rubber:

Inhalation:
Move to fresh air if exposed to fumes from heated material.

Skin contact:
Wash with soap and water.

Eye contact:
Rinse cautiously with water for several minutes.

Ingestion:
Not expected to be hazardous.
Seek medical advice if discomfort occurs.

Firefighting Measures of BR-544 Rubber:

Suitable extinguishing media:
Foam.
Dry chemical.

Carbon dioxide.
Water spray.

Specific hazards:
Burning rubber produces dense black smoke.
Toxic gases may be released.

Protective equipment:
Firefighters should wear self-contained BR-544 rubbereathing apparatus (SCBA).

Accidental Release Measures of BR-544 Rubber:

Personal precautions:
Collect solid material mechanically.
Avoid generating dust.

Environmental precautions:
Prevent material from entering drains or waterways in large quantities.

Methods for cleanup:
Dispose according to local regulations.

Exposure Controls / Personal Protection of BR-544 Rubber:

Engineering controls:
Provide adequate ventilation during processing.

Respiratory protection:
Use a mask if fumes are generated during heating.

Hand protection:
Wear protective gloves.

Eye protection:
Safety glasses recommended.

Skin protection:
Wear protective clothing for prolonged contact.

Identifiers of BR-544 Rubber:
Chemical Name: Polybutadiene Rubber
Polymer Type: Neodymium-catalyzed polybutadiene.
CAS Number: 9003-17-2
EC Number: 618-370-2
Molecular Formula: (C4H6)n
Monomer: 1,3-Butadiene raw material.
Polymer Structure: High 1,4-cis configuration.
Polymer Class: Synthetic diene rubber.
Physical Form: Solid bale or crumb.
HS Code: 4002.20

Properties of BR-544 Rubber:
Appearance: Light yellow to pale solid rubber.
Odor: Mild hydrocarbon odor.
Density: Approximately 0.90–0.92 g/cm³.
Mooney Viscosity: Medium viscosity suitable for processing.
Glass Transition Temperature (Tg): Very low (around -100°C) providing flexibility.
Elasticity: High rebound resilience.