Foaming thermoplastic elastomers

Details Foaming thermoplastic elastomers Foaming thermoplastic elastomers

1991-03-13

1991-12-03

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 79, 521 81, 521 841, 521134, 521139, 521140, C08J 912

Patent

active

050701118

ABSTRACT:
A process of making a foamed thermoplastic elastomer is disclosed, and the foam thus produced. The thermoplastic elastomers, which are blends of 90 to 10 parts of rubber and 10 to 90 parts of crystalline polyolefin plastic, are melted, admixed with water under pressure, and released to atmospheric pressure. The resultant foam has good cell structure and low density, and a high percentage of closed (as opposed to interconnecting) cells.

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"Polyolefins, Structure and Properties" by Boenig, Elsevier Pub. Co., 1966, p. 81, Chap. 3.

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