Process for producing a block copolymer resin and product thereo

Details Process for producing a block copolymer resin and product thereo Process for producing a block copolymer resin and product thereo

1988-11-14

1990-04-17

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...

525314, C08F29704

Patent

active

049181459

ABSTRACT:
A continuous process as disclosed which produces a clear, high impact block copolymer having a vinyl aryl monomer content of at least 70 percent of the block copolymer. This continuous process involves the continuous preparation of a multiblock copolymer which comprises the alternate feeding of monomer streams to a reaction zone wherein a product stream is withdrawn from the polymerization system at the same rate as the total rate of the feed streams.

REFERENCES:
patent: 3937760 (1976-02-01), Cole et al.
patent: 4098980 (1978-07-01), Markle et al.
patent: 4530967 (1985-07-01), Shiraki et al.

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