One-part activator and blowing agent for foaming plastics

Details One-part activator and blowing agent for foaming plastics One-part activator and blowing agent for foaming plastics

1984-10-18

1985-05-28

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 54, 264DIG5, 264141, 521 81, 521 85, 521 92, 521139, 521143, 521146, 521149, 521150, C08J 906, B29N 720

Patent

active

045201374

ABSTRACT:
A one-part activator and blowing agent system for foaming plastics comprising an alkali metal borohydride and a salt hydrate blended in a single pellet or as separate pellets with a dry inert resinous polymer carrier. The one-part system is blended with a resinous polymer and then the blend extruded at a temperature at which the blend becomes molten such that the salt hydrate releases its water of hydration to hydrolyze the borohydride and produce a cellular article.

REFERENCES:
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patent: 3393260 (1968-07-01), Miler
patent: 4394458 (1983-07-01), Wade
patent: 4397948 (1983-08-01), Wade
patent: 4399238 (1983-08-01), Wade
patent: 4491554 (1985-01-01), Hamel et al.

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