Styrene Butadiene Rubber

Styrene Butadiene Rubber Struktur
9003-55-8
CAS-Nr.
9003-55-8
Englisch Name:
Styrene Butadiene Rubber
Synonyma:
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
Summenformel:
C36H42X2
Molgewicht:
474.72
MOL-Datei:
9003-55-8.mol

Styrene Butadiene Rubber Eigenschaften

Dichte
1.04 g/mL at 25 °C
Brechungsindex
1.57
Löslichkeit
solvents with solubility parameters between 7.7 and 9.4: soluble
Aggregatzustand
slab/chunk
Stabilität:
Stable. Combustible. Incompatible with strong oxidizing agents.
LogP
2.700 (est)
IARC
3 (Vol. 19, Sup 7) 1987
EPA chemische Informationen
Styrene 1,3-butadiene polymer (9003-55-8)

Sicherheit

WGK Germany  3
RTECS-Nr. WL6478000

Styrene Butadiene Rubber Chemische Eigenschaften,Einsatz,Produktion Methoden

Chemische Eigenschaften

solid or viscous liquid, depending upon the degree of polymerisation

Verwenden

Molded or extruded into toys, packaging, appliances, communication cassettes, dinnerware and serviceware.

Vorbereitung Methode

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.

Sicherheitsprofil

An eye irritant. Questionable carcinogen. When heated to decomposition it emits acrid smoke and irritating fumes. See also POLYMERS, INSOLUBLE.

Styrene Butadiene Rubber Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Styrene Butadiene Rubber Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 145)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Henan Fengda Chemical Co., Ltd
+8613613820652
info@fdachem.com China 5505 58
airuikechemical co., ltd.
+undefined86-15315557071
15315557071@163.com China 630 58
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21700 55
career henan chemical co
+86-0371-86658258
sales@coreychem.com China 29914 58
Hubei Jusheng Technology Co.,Ltd.
18871490254
linda@hubeijusheng.com CHINA 28180 58
Hubei xin bonus chemical co. LTD
86-13657291602
linda@hubeijusheng.com CHINA 22968 58
Shandong chuangyingchemical Co., Ltd.
18853181302
sale@chuangyingchem.com CHINA 5909 58
Chongqing Chemdad Co., Ltd
+86-023-61398051 +8613650506873
sales@chemdad.com China 39916 58
Shaanxi Dideu Medichem Co. Ltd
+86-29-87569265 +86-18612256290
1056@dideu.com China 3959 58
Shaanxi Dideu Medichem Co. Ltd
18192627656
1012@dideu.com China 3911 58

9003-55-8()Verwandte Suche:


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