Styrene Butadiene Rubber
Description- Product Name
- Styrene Butadiene Rubber
- CAS No.
- 9003-55-8
- Chemical Name
- Styrene Butadiene Rubber
- Synonyms
- sbs;SBR;STYRENE-BUTADIENE RUBBER;STYRENE/BUTADIENE COPOLYMER;dienols;ricon100;styrene-butadienepolymer;styrene-1,3-butadienecopolymer;Polymerized Styrene Butadiene Rubber;Styrene-butadiene rubber,oil-extended
- CBNumber
- CB7476376
- Molecular Formula
- (C8H8.C4H6)x
- Formula Weight
- 158.24
- MOL File
- 9003-55-8.mol
Styrene Butadiene Rubber Property
- Melting point:
- 253 °C
- Density
- 1.04 g/mL at 25 °C
- refractive index
- 1.57
- solubility
- solvents with solubility parameters between 7.7 and 9.4: soluble
- form
- slab/chunk
- Stability:
- Stable. Combustible. Incompatible with strong oxidizing agents.
- InChI
- InChI=1S/C8H8.C4H6/c1-2-8-6-4-3-5-7-8;1-3-4-2/h2-7H,1H2;3-4H,1-2H2
- InChIKey
- MTAZNLWOLGHBHU-UHFFFAOYSA-N
- SMILES
- C(=C)C=C.C(C1C=CC=CC=1)=C
- LogP
- 2.700 (est)
- IARC
- 3 (Vol. 19, Sup 7) 1987
- EPA Substance Registry System
- Styrene 1,3-butadiene polymer (9003-55-8)
Safety
- WGK Germany
- 3
- RTECS
- WL6478000
- TSCA
- TSCA listed
N-Bromosuccinimide Price
- Product number
- 432490
- Product name
- Polystyrene-<i>block</i>-polybutadiene
- Purity
- 30 wt.% styrene
- Packaging
- 250 g
- Price
- $62.79
- Updated
- 2025/07/31
- Product number
- S461830
- Product name
- STYRENE/BUTADIENE COPOLYMER
- Purity
- Aldrich<sup>CPR</sup>
- Packaging
- 1 unit
- Price
- $185
- Updated
- 2025/07/31
- Product number
- 430072
- Product name
- Poly(styrene-co-butadiene)
- Purity
- butadiene 4 wt. %, melt index 6 g/10 min (200°C/5kg)
- Packaging
- 1kg
- Price
- $80.3
- Updated
- 2025/07/31
- Product number
- 432490
- Product name
- Polystyrene-<i>block</i>-polybutadiene
- Purity
- 30 wt.% styrene
- Packaging
- 1 kg
- Price
- $112
- Updated
- 2025/07/31
- Product number
- 182877
- Product name
- Polystyrene-block-polybutadiene-block-polystyrene
- Purity
- styrene 30 wt. %, average Mw ~140,000 by GPC, contains <0.5 wt. % antioxidant
- Packaging
- 250g
- Price
- $107
- Updated
- 2025/07/31
Styrene Butadiene Rubber Chemical Properties,Usage,Production
Description
By far the most widely used type of synthetic rubber, its consumption for all applications is four times that of polybutadiene, its nearest competitor, and 1.5 times that of all other elastomers combined. Its manufacture involves copolymerization of three parts butadiene with one part styrene. These materials are suspended in finely divided emulsion form in a large proportion of water, in the presence of a soap or detergent. Also present in small amounts are an initiator or catalyst which is usually a peroxide, and a chain-modifying agent such as dodecyl mercaptan.
Chemical Properties
solid or viscous liquid, depending upon the degree of polymerisation
Uses
Molded or extruded into toys, packaging, appliances, communication cassettes, dinnerware and serviceware.
Uses
Component of hot melt adhesives, sealants, asphalt and oil gels. Modifier for polymers, thermosets and general rubber compounding. Direct molded or extruded auto parts, sporting goods, footware and film.
Definition
ChEBI: Styrene-butadiene copolymer is a polymer.
Production Methods
SBR is prepared mainly by emulsion and solution polymerization in a free-radical process with a mercaptan, such as dodecylmercaptan, which is used as a chain-transfer agent to control molecular weight. In the emulsion process, a soapstabilized water emulsion of styrene and butadiene is polymerized in continuous reactors to form SBR elastomer. “Cold” SBR is produced at a temperature of 5–10°C, and “hot” SBR at about 50°C . Solution SBR is typically made in hydrocarbon solution with an n-butyllithium initiator. The major differences between emulsion and solution styrene–butadiene are in the linearity and molecular-weight distribution of the polymer chains. In nonpolar solvents, the tendency is to produce block copolymer, but random copolymers are formed in polar solvents. SBR can be vulcanized similar to natural rubber but generally requires less sulfur and is more accelerated because of its lowunsaturation.
Hazard
Questionable carcinogen.
Health Hazard
Styrene Butadiene Rubber is prepared in large quantities for tire treads and other, similar uses. The properties, molecular weight, and percentage of monomer can all be controlled in the polymerization process. Hazards of the SBR industry have been identified and related mostly to the monomers and additives. Contact dermatitis and leukemia have been associated with solvent and additive use but not with the actual polymer itself (Checkoway et al., 1984; Kilpikari, 1982). Epidemiological studies in the industry have not revealed a significant increase in disease or causes of death (Matanoski and Schwartz, 1987; Meinhardt et al., 1982). The hazards of the butadiene and styrene monomers were discussed previously.
Safety Profile
An eye irritant. Questionable carcinogen. When heated to decomposition it emits acrid smoke and irritating fumes. See also POLYMERS, INSOLUBLE.
Solubility in organics
Chloroform, dichloromethane, hexane, MEK, toluene
Toxics Screening Level
Due to a lack of available toxicity data, the ITSL for Styrene-butadiene polymer is being set at 0.1 μg/m3 with annual averaging.
Styrene Butadiene Rubber Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Styrene Butadiene Rubber manufacturers
- Product
- Styrene Butadiene Rubber 9003-55-8
- Price
- US $0.00-0.00/KG
- Min. Order
- 1KG
- Purity
- 98
- Supply Ability
- 10000KGS
- Release date
- 2025-12-02
- Product
- Styrene Butadiene Rubber 9003-55-8
- Price
- US $0.00-0.00/Kg
- Min. Order
- 1Kg
- Purity
- 99.99%
- Supply Ability
- 20 tons
- Release date
- 2025-04-15
- Product
- Styrene Butadiene Rubber 9003-55-8
- Price
- US $120.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20ton
- Release date
- 2024-05-30