Expandable and expanded alkenyl aromatic polymer particles

Details Expandable and expanded alkenyl aromatic polymer particles Expandable and expanded alkenyl aromatic polymer particles

1988-09-21

1990-03-27

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 98, 521910, 264DIG5, C08J 916, C08J 918

Patent

active

049121405

ABSTRACT:
Expandable and expanded particles are prepared from an alkenyl aromatic polymer and a volatile fluid blowing agent mixture of a first blowing agent of 1,1-difluoro-1-chloroethane; and a second blowing agent selected from normal pentane, isopentane, neopentane or mixtures of the various pentanes.

REFERENCES:
patent: 3960792 (1976-06-01), Nakamura
patent: 4636527 (1987-01-01), Suh et al.

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