Foamable ABS polyblend composition

Details Foamable ABS polyblend composition Foamable ABS polyblend composition

1979-11-16

1980-12-09

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 81, 521139, 521140, 525 74, 525 78, C08J 902

Patent

active

042385725

ABSTRACT:
The invention relates to a foamable polymeric polyblend of a matrix copolymer of alkenyl aromatic/alkenyl nitrile monomers having dispersed therein (1) a grafted diene rubber being grafted with said monomers and (2) an alkyl half ester of a styrene/maleic anhydride copolymer. The composition is foamed by the thermal decomposition of said half ester. The foamed polyblend has great utility as a structural foam with said composition providing fast molding cycles and fine cell structure. A method for foaming said polyblend is disclosed.

REFERENCES:
patent: 3642949 (1972-02-01), Stafford et al.
patent: 3760047 (1973-09-01), Goeth et al.
patent: 3962154 (1976-06-01), Elgi

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