Heat-resistant foamed plastic

Details Heat-resistant foamed plastic Heat-resistant foamed plastic

1992-09-29

1993-08-24

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521189, 526262, C08J 910

Patent

active

052389723

ABSTRACT:
A foamed plastic is provided which is excellent in heat resistance and mechanical strength. The foamed plastic is produced by foaming a resin which comprises an N-alkyl-substituted maleimide unit in an amount of 30 to 98 mol % and an olefin unit in an amount of 70 to 2 mol % of the entire polymer, and has a weight-average molecular weight of from 1.times.10.sup.3 to 5.times.10.sup.6 in terms of polystrene.

REFERENCES:
patent: 4120923 (1978-10-01), Kloker et al.
patent: 4525536 (1985-06-01), Ikuma et al.
patent: 4609711 (1986-09-01), Younes
patent: 4625004 (1986-11-01), Younes
patent: 4661574 (1987-04-01), Younes
patent: 4771080 (1988-09-01), Ibuki et al.
patent: 5137933 (1992-08-01), Hiromoto et al.

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