Process for producing block copolymer from conjugated diene and

Details Process for producing block copolymer from conjugated diene and Process for producing block copolymer from conjugated diene and

1978-03-28

1980-09-02

Henderson, Jr., C. A.

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

Synthetic resins

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

264142, 525244, 525250, 525256, 525258, C08F29704, C08F29300

Patent

active

042207380

ABSTRACT:
By block-copolymerizing a mixture of an aromatic vinyl compound and a conjugated diene in two stages in an aliphatic hydrocarbon solvent, using an organomonolithium compound or an organodilithium compound as a polymerization initiator, a block copolymer is formed as a suspension polymer in a slurry state.
The resulting block copolymer is very clear and excellent in mechanical properties, especially, strength, elongation and impact strength. It has a wide application in the field of general resins.

REFERENCES:
patent: 3149182 (1964-09-01), Porter
patent: 3287333 (1966-11-01), Zelinski
patent: 3402159 (1968-09-01), Hsieh
patent: 3418394 (1968-12-01), Wofford
patent: 3560593 (1971-02-01), Hsieh
patent: 3872068 (1975-03-01), Horiie
patent: 3906058 (1975-09-01), Durst
patent: 3953543 (1976-04-01), Futamura

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