Process for the polymerization of acrylonitrile-butadiene-styren

Details Process for the polymerization of acrylonitrile-butadiene-styren Process for the polymerization of acrylonitrile-butadiene-styren

1979-06-28

1980-12-16

Hamrock, William F.

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

Synthetic resins

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

525264, C08F29102

Patent

active

042398630

ABSTRACT:
Acrylonitrile-butadiene-styrene (ABS) resins are prepared by the mass or mass-suspension process employing a tertiary-butyl peroxy initiator having a 10-hour half-life between about 50.degree. and 95.degree. C. wherein initial polymerization of up to about 10 weight percent solids is conducted under plug flow conditions. From about 5 to 10 percent conversion to about 40 percent conversion is polymerized with agitation. The remaining polymerization is done with or without agitation. Improved impact resistance is obtained.

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patent: 4046839 (1977-09-01), Papetti
patent: 4064116 (1977-12-01), Papetti
patent: 4098847 (1978-07-01), Stevenson et al.

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