Foams of ionically associated blends of styrenic and ethylenic p

Details Foams of ionically associated blends of styrenic and ethylenic p Foams of ionically associated blends of styrenic and ethylenic p

1986-02-10

1988-02-02

Foelak, Morton

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

Synthetic resins

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

521 94, 521134, 521143, 521146, 525196, C08L 3302

Patent

active

047229721

ABSTRACT:
Novel foamed thermoplastic resins are disclosed. The foam includes an ionically associated blend containing at least about 60 weight % of a metal salt of a styrene-acrylic acid copolymer and at least 1 weight % of a metal salt of an ethylene-acrylic acid copolymer. The foams typically are prepared by extruding a ternary mixture of a styrene-acrylic acid copolymer, an ethylene-acrylic copolymer and an alkali metal bicarbonate which functions as the foaming agent. The ionically associated blends included in the foam are believed to be novel compositions of matter.

REFERENCES:
patent: 3437718 (1969-04-01), Rees

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