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Send EmailButadiene Rubber, Polybutadiene Rubber, Synthetic Rubber, BR, PBR,CBR, 9003-17-2
BUTADIENE RUBBER (BR)
Butadiene Rubber / Polybutadiene / BR / Polybutadiene Rubber / Synthetic Rubber
CAS Number: 9003-17-2
EINECS: 618-370-0
1. PRODUCT IDENTIFICATION AND CHEMICAL IDENTITY
| Parameter | Description |
|---|---|
| Product Name | Butadiene Rubber (BR) |
| Other Names | Polybutadiene, Polybutadiene Rubber, BR, Synthetic Rubber, PBR, CBR |
| CAS Number | 9003-17-2 |
| EINECS | 618-370-0 |
| Molecular Formula | (C₄H₆)ₓ |
| Molecular Weight | Variable (depends on degree of polymerization) |
| Chemical Class | Synthetic rubber (homopolymer of butadiene) |
| Appearance | White to amber solid (bales) |
| Odor | Characteristic rubber odor |
| Density | 0.91 - 0.93 g/cm³ |
| Glass Transition Temperature (Tg) | -105°C to -95°C (very low) |
| Service Temperature Range | -60°C to +100°C |
| Refractive Index | ~1.52 |
Butadiene Rubber (BR) is a synthetic rubber produced by the polymerization of butadiene monomers. It is one of the most important synthetic rubbers and is known for its excellent abrasion resistance, high elasticity, and very low glass transition temperature (approximately -105°C to -95°C). BR is produced primarily by solution polymerization and is available in various grades, including high-cis (95-97%) and low-cis (35%) types. The high-cis content grades offer superior elasticity and resilience, making them ideal for tire applications. BR is widely used in tire manufacturing, industrial products, footwear, golf balls, and various consumer products. It is often blended with other rubbers (especially natural rubber and SBR) to improve performance.
2. CLASSIFICATION BY CIS CONTENT
| Type | Cis Content | Properties | Main Applications |
|---|---|---|---|
| High-Cis BR | 95-97% | High elasticity, excellent resilience, good abrasion resistance | Tire treads, tire sidewalls, high-performance applications |
| Medium-Cis BR | 90-95% | Good elasticity and resilience | General-purpose applications, blends |
| Low-Cis BR | 35-40% | Lower elasticity, better processing | Specialty applications, blends |
| High-Vinyl BR | Variable | Higher glass transition temperature, different properties | Specialty applications, impact modifiers |
Typical BR Grades:
| Grade | Cis Content | Mooney Viscosity | Applications |
|---|---|---|---|
| BR 1203 | ~97% | 40-45 MU | High-performance tires, mechanical goods |
| BR 1220 | ~96% | 40-50 MU | Tire treads, tire sidewalls, general applications |
| BR 1240 | ~96% | 45-55 MU | Industrial products, blends |
| BR 1300 | ~35% | 45-55 MU | Specialty applications, impact modifiers |
| BR 1500 | ~96% | 40-50 MU | Golf balls, general rubber products |
3. TECHNICAL SPECIFICATIONS
Typical Properties of BR:
| Parameter | High-Cis BR (1203/1220) | Low-Cis BR (1300) |
|---|---|---|
| Cis Content | 95-97% | 35-40% |
| Mooney Viscosity (ML 1+4, 100°C) | 40-50 MU | 45-55 MU |
| Density (g/cm³) | 0.91 - 0.93 | 0.91 - 0.93 |
| Glass Transition Temperature (Tg) | -105°C to -100°C | -95°C to -90°C |
| Service Temperature Range | -60°C to +100°C | -50°C to +90°C |
| Tensile Strength (vulcanized) | 15-20 MPa | 12-18 MPa |
| Elongation at Break (vulcanized) | 400-600% | 350-500% |
| Abrasion Resistance | Excellent | Good |
| Resilience | Excellent | Good |
| Tear Strength | Good | Moderate |
| Electrical Insulation | Good | Good |
4. PHYSICAL AND CHEMICAL PROPERTIES
| Property | Value |
|---|---|
| Density | 0.91 - 0.93 g/cm³ |
| Glass Transition Temperature (Tg) | -105°C to -95°C (very low) |
| Service Temperature Range | -60°C to +100°C |
| Tensile Strength (vulcanized) | 15-20 MPa |
| Elongation at Break (vulcanized) | 400-600% |
| Abrasion Resistance | Excellent |
| Resilience | Excellent |
| Tear Strength | Good |
| Flexibility | Excellent at low temperatures |
| Weather Resistance | Fair |
| Ozone Resistance | Poor |
| Oil Resistance | Poor |
| Water Resistance | Good |
| Acid Resistance | Good |
| Alkali Resistance | Good |
| Electrical Insulation | Good |
| Hardness Range (Shore A) | 40-70 |
5. ADVANTAGES OF BR
| Advantage | Description |
|---|---|
| Excellent Abrasion Resistance | Superior to most other rubbers, ideal for tire treads |
| High Elasticity | Excellent resilience and rebound properties |
| Very Low Glass Transition Temperature | Maintains flexibility at very low temperatures (-60°C) |
| High Tensile Strength | Good mechanical properties |
| Excellent Flexibility | High flexibility and elongation at break |
| Low Heat Build-up | Excellent dynamic properties |
| Good Low-Temperature Performance | Superior to most other rubbers |
| Good Water Resistance | Resistant to water and aqueous solutions |
| Good Acid and Alkali Resistance | Resistant to many acids and bases |
6. LIMITATIONS
| Limitation | Description |
|---|---|
| Poor Oil Resistance | Not resistant to oils and fuels |
| Poor Ozone Resistance | Requires antioxidants/antiozonants for outdoor use |
| Poor Weather Resistance | Degrades under UV and atmospheric conditions |
| Poor Tear Strength | Lower than natural rubber |
| Poor Green Strength | Low strength in uncured state |
| Poor Processability | More difficult to process than some other rubbers |
| Poor Adhesion | Poor adhesion to other materials without special formulations |
7. APPLICATIONS AND INDUSTRIAL USES
7.1. Tire Industry (Largest Application - ~70%)
| Application | Description |
|---|---|
| Tire Treads | Passenger car, truck, and OTR tire treads (in blends with NR and SBR) |
| Tire Sidewalls | Tire sidewalls (in blends with NR) |
| Tire Inner Liners | Inner liners (in blends) |
| Retread Materials | Retreading applications |
| Racing Tires | High-performance racing tires |
BR is used extensively in tire manufacturing, typically blended with natural rubber (NR) and styrene-butadiene rubber (SBR) to achieve optimal performance. The high cis content (95-97%) provides excellent abrasion resistance, low rolling resistance, and superior wet grip, making BR an essential component of modern tires.
7.2. Industrial Products
| Application | Description |
|---|---|
| Conveyor Belts | Heavy-duty conveyor belts |
| Hoses | Industrial hoses |
| Gaskets | Industrial gaskets |
| Rollers | Roller coverings |
| Vibration Dampers | Vibration and noise insulation |
| Rubber Sheets | Industrial rubber sheets |
7.3. Footwear
| Application | Description |
|---|---|
| Shoe Soles | Work and outdoor footwear soles |
| Athletic Footwear | Sports shoe soles |
| Industrial Footwear | Safety boots |
7.4. Consumer Products
| Application | Description |
|---|---|
| Golf Balls | Centers and covers of golf balls |
| Rubber Bands | Elastic bands |
| Toys | Rubber toys |
| Sports Equipment | Various sports equipment |
7.5. Impact Modifiers
| Application | Description |
|---|---|
| Polystyrene Modification | Impact modifier for polystyrene (HIPS) |
| ABS Resins | Impact modifier for ABS resins |
| Engineering Plastics | Impact modification of various engineering plastics |
7.6. Other Applications
| Application | Description |
|---|---|
| Seals | General-purpose seals |
| Electrical Insulation | Cable and wire insulation |
| Adhesives | Adhesive formulations |
8. COMPARISON WITH OTHER RUBBER TYPES
| Property | BR | NR | SBR | NBR |
|---|---|---|---|---|
| Abrasion Resistance | Excellent | Good | Excellent | Good |
| Resilience | Excellent | Excellent | Good | Moderate |
| Low-Temperature Flexibility | Excellent | Excellent | Good | Moderate |
| Oil Resistance | Poor | Poor | Poor | Excellent |
| Tear Strength | Good | Excellent | Good | Good |
| Tensile Strength | Good | Excellent | Good | Good |
| Heat Build-up | Low | Moderate | High | Moderate |
| Ozone Resistance | Poor | Poor | Poor | Poor |
| Cost | Moderate | Variable | Low | Moderate |
9. TYPICAL FORMULATIONS AND USAGE
| Application | BR Content | Blended With |
|---|---|---|
| Passenger Tire Tread | 25-35% | NR, SBR |
| Truck Tire Tread | 30-50% | NR, SBR |
| Racing Tire Tread | 50-70% | NR |
| Tire Sidewall | 10-30% | NR |
| Conveyor Belts | 20-40% | NR, SBR |
| Shoe Soles | 30-60% | NR, SBR |
| Golf Balls | 100% | - |
10. PACKAGING AND SHIPPING
| Packaging Option | Details |
|---|---|
| Bale Weight | 33.33 kg or 35 kg |
| Bale Dimensions | ~70 cm x 35 cm x 18 cm |
| Pallet Configuration | 36 bales/pallet = 1.26 MT |
| Pallet Type | Wooden pallet, shrink-wrapped |
| Container Capacity (20-ft) | 16 pallets = 20.16 MT |
| Container Type | Standard 20-ft container |
11. STORAGE AND HANDLING
| Parameter | Information |
|---|---|
| Storage Conditions | Cool, dry, well-ventilated area; away from direct sunlight |
| Recommended Temperature | Below 25°C |
| Humidity | Avoid high humidity to prevent mold growth |
| Shelf Life | 12-24 months under proper storage conditions |
| Handling | Avoid contamination with oils, solvents, and dirt |
| Protection | Keep bales covered and protected from moisture and dust |
| Stacking | Maximum 4-5 pallets high for stable storage |
12. SAFETY AND HEALTH INFORMATION
| Parameter | Information |
|---|---|
| Toxicity | Non-toxic |
| Skin Irritation | Non-irritant |
| Eye Irritation | Mild irritant (dust) |
| Inhalation | May cause respiratory irritation (dust) |
| Flammability | Combustible (can burn) |
| Fire Extinguishing Media | Water spray, foam, CO₂, dry chemical powder |
| Special Hazards | Burning produces toxic fumes (CO, CO₂) |
13. FIRST AID MEASURES
| Exposure Route | Action |
|---|---|
| Inhalation | Move person to fresh air. If irritation persists, seek medical attention. |
| Skin Contact | Wash with soap and water. Remove contaminated clothing. |
| Eye Contact | Rinse with plenty of water for at least 15 minutes. Seek medical attention if irritation persists. |
| Ingestion | Rinse mouth. Do NOT induce vomiting. Seek medical attention if large amounts are swallowed. |
14. REGULATORY INFORMATION
| Region | Status |
|---|---|
| EU | REACH registered |
| Turkey (KKDİK) | Mandatory compliance; requires registration |
| USA (TSCA) | Listed |
| Canada (DSL) | Listed |
| Australia (AICS) | Listed |
| Japan (ENCS) | Listed |
| Korea (KECL) | Listed |
| China (IECSC) | Listed |
Regulatory Status:
| Status | Information |
|---|---|
| HS Code | 40022000 |
| CAS Number | 9003-17-2 |
| EINECS | 618-370-0 |
| IARC Classification | Not classified |
| WGK Germany | 1 (slight hazard to water) |
15. OTHER NAMES AND DATABASE IDENTIFIERS
| Category | Names / Identifiers |
|---|---|
| Product Names | Butadiene Rubber, Polybutadiene, BR, Polybutadiene Rubber |
| Trade Names | Diene, Buna CB, Europrene BR, Nipol BR, BR 1203, BR 1220 |
| Type Names | High-Cis BR, Low-Cis BR, CBR (Cis-Polybutadiene) |
| Common Names | Synthetic Rubber, Artificial Rubber, BR |
Database Identifiers:
| Database | Identifier |
|---|---|
| CAS | 9003-17-2 |
| EINECS | 618-370-0 |
| HS Code | 40022000 |
16. COMPARISON OF BR GRADES
| Property | High-Cis BR (1203) | High-Cis BR (1220) | Low-Cis BR (1300) |
|---|---|---|---|
| Cis Content | ~97% | ~96% | ~35% |
| Mooney Viscosity | 40-45 MU | 40-50 MU | 45-55 MU |
| Resilience | Excellent | Excellent | Good |
| Abrasion Resistance | Excellent | Excellent | Good |
| Low-Temperature Flexibility | Excellent | Excellent | Good |
| Processing | Good | Good | Better |
| Applications | High-performance tires | General tires, mechanical goods | Specialty applications, impact modifiers |
17. INDUSTRY SUITABILITY TABLE
| Industry | Applications | Recommended Grade | Suitability |
|---|---|---|---|
| Tire Industry | Passenger, truck, racing tires | High-Cis BR (1203, 1220) | High |
| Industrial Products | Conveyor belts, hoses, rollers | High-Cis BR | High |
| Footwear | Shoe soles | High-Cis BR | High |
| Sports Equipment | Golf balls | High-Cis BR | High |
| Plastics Modification | Impact modification | Low-Cis BR | High |
| Consumer Products | Rubber bands, toys | High-Cis BR | High |
18. STRENGTHS AND WEAKNESSES OF BR
| Strengths | Weaknesses |
|---|---|
| Excellent abrasion resistance | Poor oil resistance |
| High elasticity and resilience | Poor ozone and weather resistance |
| Very low glass transition temperature | Poor tear strength |
| Excellent low-temperature flexibility | Poor green strength |
| Good tensile strength | Difficult processing |
| Low heat build-up | Poor adhesion to other materials |
| Good water and acid resistance | |
| Wide temperature range |
19. BR IN TIRE APPLICATIONS
| Tire Component | Typical BR Content | Function |
|---|---|---|
| Tread | 25-50% | Improves abrasion resistance, reduces rolling resistance |
| Sidewall | 10-30% | Improves flexibility and fatigue resistance |
| Inner Liner | 0-20% | Improves air retention (with other rubbers) |
| Retread | 20-40% | Improves performance and durability |
20. SUMMARY AND CRITICAL WARNINGS
SUMMARY:
Butadiene Rubber (BR) is a synthetic rubber produced by the polymerization of butadiene monomers. It is classified by cis content: high-cis BR (95-97% cis) offers excellent elasticity, resilience, and abrasion resistance, while low-cis BR (35-40% cis) provides better processing. Key grades include BR 1203, BR 1220, and BR 1300. BR exhibits excellent abrasion resistance, very low glass transition temperature (-105°C to -95°C), and outstanding low-temperature flexibility. It is used primarily in tire manufacturing (~70%), industrial products, footwear, golf balls, impact modifiers, and consumer goods. BR is non-toxic, combustible, and requires storage in cool, dry conditions. HS Code: 40022000.
Key Properties:
| Property | Value |
|---|---|
| Appearance | White to amber solid (bales) |
| CAS Number | 9003-17-2 |
| Density | 0.91 - 0.93 g/cm³ |
| Glass Transition Temperature | -105°C to -95°C |
| Primary Grades | BR 1203, BR 1220, BR 1300 |
| Primary Use | Tires (~70%), industrial products, footwear |
Major Application Areas:
| Industry | Applications |
|---|---|
| Tire Industry | Passenger, truck, racing tires |
| Industrial Products | Conveyor belts, hoses, rollers |
| Footwear | Shoe soles |
| Sports Equipment | Golf balls |
| Plastics Modification | Impact modification |
| Consumer Products | Rubber bands, toys |
Key Safety Points:
-
NON-TOXIC: Generally safe for handling
-
COMBUSTIBLE: Can burn; keep away from ignition sources
-
STORAGE: Store in cool, dry, well-ventilated area; avoid direct sunlight and high humidity
-
PPE RECOMMENDED: Dust mask, safety goggles, protective gloves (for handling)
-
PROTECT: Keep away from oils, solvents, and contaminants
CRITICAL WARNINGS:
-
BR is known for its excellent abrasion resistance and is used extensively in tire treads, typically blended with NR and SBR.
-
High-cis BR (95-97%) offers superior elasticity, resilience, and low-temperature performance compared to low-cis grades.
-
BR has a very low glass transition temperature (-105°C to -95°C), maintaining flexibility at extremely low temperatures.
-
BR has poor oil resistance and requires antioxidants/antiozonants for outdoor applications.
-
BR is used in golf balls (centers and covers), impact modification of plastics (HIPS, ABS), and various consumer products.
-
BR is often blended with other rubbers to optimize performance in tire applications.
-
BR has lower tear strength and green strength compared to natural rubber.
-
BR is produced primarily by solution polymerization and is available in various cis-content grades.
-
The high-cis content grade (BR 1203/1220) is the most widely used and is preferred for tire applications.
Important Disclaimer: This Technical Data Sheet (TDS) is for informational purposes only. The information provided is based on available data and is believed to be accurate. However, the user is solely responsible for determining the suitability of the product for their specific application and for complying with all applicable regulations and safety requirements. For complete safety, handling, storage, and regulatory compliance information, always refer to the official Safety Data Sheet (SDS/MSDS) provided by the manufacturer/supplier.
