Process for forming fast-cool vinyl aromatic expandable polymers

Details Process for forming fast-cool vinyl aromatic expandable polymers Process for forming fast-cool vinyl aromatic expandable polymers

1983-01-31

1983-10-04

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 57, 521 60, 521139, 521140, 525314, 525901, C08J 918

Patent

active

044079796

ABSTRACT:
Expandable vinyl aromatic polymers are produced, which exhibit fast-cool properties upon formation of foamed articles therefrom, by polymerizing a vinyl aromatic monomer, in which is dissolved 1.0-10.0 percent, based on the monomer, of a thermoplastic, branched, block copolymer of 55-95 percent of polymerized vinyl aromatic monomer and 5-45 percent conjugated diene, the polymerization forming vinyl aromatic polymer containing the thermoplastic, branched, block copolymer, and impregnating the polymer so produced, with a blowing agent.

REFERENCES:
patent: 2857339 (1958-10-01), Colwell
patent: 2857340 (1958-10-01), Colwell
patent: 3558534 (1971-01-01), Niechwiadowicz
patent: 3956203 (1976-05-01), Burger
patent: 3972843 (1976-08-01), DeJong
patent: 4269871 (1981-05-01), Bloomers et al.
patent: 4304881 (1981-12-01), Aoki et al.

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