High-impact polystyrene composition and production thereof

Details High-impact polystyrene composition and production thereof High-impact polystyrene composition and production thereof

1978-04-03

1980-01-15

Michl, Paul R.

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

Synthetic resins

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

525195, C08F27902

Patent

active

041838777

ABSTRACT:
High-impact polystyrene composition is produced by radical polymerization, e.g. bulk or bulk-suspension polymerization, of styrene having dissolved therein 2 to 20% by weight of one or more polybutadienes prepared by solution polymerization using an organic lithium compound as catalyst, said polybutadienes having (1) 1,2-vinyl content of more than 15 to 35% and cis-1,4 content of 20 to 85%, and (2) Mooney viscosity of 25 to 85, 5% styrene solution viscosity at 25.degree. C. being 50 to 200 cps and between 1.5 and 3.0 of the Mooney viscosity.

REFERENCES:
patent: 3317918 (1967-05-01), Foster
patent: 3526606 (1970-09-01), Minekawa
patent: 3868434 (1975-02-01), Westphal
patent: 3937681 (1976-02-01), Nordsiek
patent: 3957915 (1976-05-01), Spanswick
patent: 3989771 (1976-11-01), Reith

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