Rubber composition containing crosslinkable processing aid

Details Rubber composition containing crosslinkable processing aid Rubber composition containing crosslinkable processing aid

1980-08-29

1982-03-30

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525196, 525208, 525214, C08L 700, C08L 900, C08L 906

Patent

active

043223192

ABSTRACT:
A rubber composition comprising (A) 100 parts by weight of a rubber; (B) 5 to 50 parts by weight of a low molecular weight diene copolymer containing a glycidyl group-containing monomer or chloromethylstyrene, said copolymer (B) comprising 30% by weight or less of copolymerized styrene, and having an intrinsic viscosity of 0.2 to 1.3 dl/g as measured in toluene at 30.degree. C.; (C) a crosslinking agent reactive with the glycidyl group or the chloromethyl group in the copolymer (B) selected from (C.sub.I) a metallic oxide and (C.sub.II) an amine compound; and (D) 0.2 to 7 parts by weight, per 100 parts by weight of the rubber (A), of sulfur. This rubber composition has a good processability and can give a vulcanizate having excellent physical properties.

REFERENCES:
patent: 3025261 (1962-03-01), Sterling
patent: 3335202 (1967-08-01), Giulio et al.
patent: 4094831 (1978-06-01), Sandstrom

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