Manufacture of impact-resistant olefinic-nitrile copolymers

Details Manufacture of impact-resistant olefinic-nitrile copolymers Manufacture of impact-resistant olefinic-nitrile copolymers

1972-05-04

1976-05-11

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260880R, 260880B, 526342, 526347, C08F 218, C08F 222

Patent

active

039562468

ABSTRACT:
Impact-resistant polymers, which have low permeability to gases and vapors, are prepared by polymerizing methacrylonitrile with styrene to at least about 70% conversion and then introducing into the polymerization reaction medium a conjugated diene monomer, such as butadiene-1,3 and optionally styrene or methacrylonitrile, and completing the polymerization reaction.

REFERENCES:
patent: 3168593 (1965-02-01), Fremon et al.
patent: 3442981 (1969-05-01), Stafford et al.
patent: 3538194 (1970-11-01), Barrett et al.
patent: 3615710 (1971-10-01), Lee et al.
patent: 3676527 (1972-07-01), Babcock et al.
patent: 3742092 (1973-06-01), Duke et al.

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