Foamable polycarbonate compositions, articles and methods

Details Foamable polycarbonate compositions, articles and methods Foamable polycarbonate compositions, articles and methods

1984-10-01

1986-05-06

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 88, 521 90, 521138, 521180, 521182, 521908, C08J 910

Patent

active

045872724

ABSTRACT:
A foamable thermoplastic composition comprising in admixture (a) a polycarbonate resin, alone, or with (b) a polyester resin, (c) a minor amount of a foaming agent and (d) a minor amount of a non-fibrous particulate agent comprising an organic polymeric material to nucleate the foam. The composition also contains a surface active agent compound, such as a silicone, a polyglycol ether, a fatty acid derivative or a mixture thereof, to enhance particulate dispersion and to reduce the surface tension.

REFERENCES:
patent: 3554932 (1971-01-01), Overcashier
patent: 3781233 (1973-12-01), Muller et al.
patent: 3799954 (1974-03-01), Cain et al.
patent: 4097421 (1978-06-01), Chang
patent: 4097425 (1978-06-01), Niznik
patent: 4174432 (1979-11-01), Niznik
patent: 4280005 (1981-07-01), Fox
patent: 4286075 (1981-08-01), Robeson et al.
patent: 4351911 (1982-09-01), Fox

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