Foamable engineering thermoplastic compositions

Details Foamable engineering thermoplastic compositions Foamable engineering thermoplastic compositions

1989-02-28

1990-02-27

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 95, 521 97, 521 98, 521139, 521180, 521182, C08J 910

Patent

active

049047027

ABSTRACT:
A foamable composition comprises in admixture (a) a high molecular weight thermoplastic resin in particulate form and an effective amount of (b) a foaming agent therefor comprising a pumpable liquid dispersion comprising (i) a solid blowing agent, (ii) a liquid carrier, and, optionally, (iii) a thickener. The liquid dispersion can be pumped directly into the hopper of a foam molding machine eliminating the need to pre-mix pelletized concentrates of the solid blowing agent.

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Audo et al., Chemical Abstracts, 86:13813c.

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