Formed thermoplastic resin article and production process thereo

Details Formed thermoplastic resin article and production process thereo Formed thermoplastic resin article and production process thereo

1993-12-22

1996-01-23

Seidleck, James J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 77, 521 7, 521142, 521146, 525211, 525232, 525233, C08F 260, C08F 1600

Patent

active

054865433

ABSTRACT:
A formed thermoplastic resin article is made of a thermoplastic resin and a foamed elastic polymer finely dispersed in the thermoplastic resin. The formed thermoplastic resin article can be produced by blending an elastic polymer, in which an endothermic foaming agent decomposable at a temperature of at least 160.degree. C. was mixed in advance at a temperature lower than a decomposition temperature of the endothermic foaming agent, in a thermoplastic resin and then plasticizing and forming the resultant resin blend at a temperature at least equal to the decomposition temperature of the endothermic foaming agent.

REFERENCES:
patent: 4532306 (1985-07-01), Sugio et al.
patent: 4571416 (1986-02-01), Jarzombek et al.
patent: 5047440 (1991-09-01), Wilson, Jr.
Database WPI, Week 8718, Derwent Publications Ltd., JPA-62 070429.

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