Composite rubber particles and graft copolymer particles of comp

Details Composite rubber particles and graft copolymer particles of comp Composite rubber particles and graft copolymer particles of comp

1997-05-06

1998-11-10

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...

525191, 525227, 525241, 525310, C08F25508

Patent

active

058345639

ABSTRACT:
The present invention provides the composite rubber particles and graft copolymer particles of composite rubber which can be used as the impact modifier being excellent in weather resistance, thermal stability, and particularly impact resistance without substantially lowering transparency of each resin. The composite rubber particles have intertwined molecular chains of the isobutylene polymer and the vinyl polymer so that the both polymers cannot be separated substantially from each other and the graft copolymer particles of composite rubber are prepared by graft-polymerizing at least one vinyl polymer to the above composite rubber particles.

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