Elastomeric copolymer of aromatic vinyl compounds and butadiene

Details Elastomeric copolymer of aromatic vinyl compounds and butadiene Elastomeric copolymer of aromatic vinyl compounds and butadiene

1987-02-02

1988-05-10

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253329, 525342, 5253591, 5253595, 525360, 525371, C08F 842

Patent

active

047436522

ABSTRACT:
An elastomeric copolymer of an aromatic vinyl compound and butadiene prepared by a solution polymerization method, which has a glass transition temperature of not less than -50.degree. C. and contains polymer chains modified with a trifunctional or tetrafunctional coupling agent, and which contains not less than 3% by weight to less than 23% by weight, based on the whole polymer chains, of polymer chains having a molecular weight of at least 5 times a molecular weight corresponding to a peak appearing on the low molecular weight side of a high performance liquid chromatogram of the elastomeric copolymer. The elastomeric copolymer has an excellent processability and shows a low rolling resistance and a high wet grip characteristic when used as a rubber component in tires.

REFERENCES:
patent: 4086298 (1978-04-01), Fahrbach et al.
patent: 4167545 (1979-09-01), Fahrbach et al.
patent: 4482678 (1984-11-01), Furukawa et al.
patent: 4523618 (1985-06-01), Yamamoto et al.

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