Expanded materials with nadimide resin base

Details Expanded materials with nadimide resin base Expanded materials with nadimide resin base

1990-10-17

1991-07-30

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 77, 521184, 521185, 521189, 525422, 525426, 525445, 525471, C08J 902

Patent

active

050361112

ABSTRACT:
Expanded material obtained by heating a composition comprising at least one hermosetting nadimide resin, said heating being performed at a temperature and during a period which are sufficient to cause the expansion of said composition by release of cyclopentadiene. A nadimide resin of the polyimide type and having a number average molecular weight of 600 to 10,000 is preferably used. The composition further comprises preferably 1% to 50% by weight of a linear, preferably thermostable polymer.

REFERENCES:
patent: 3712932 (1973-01-01), Balme et al.
patent: 3862918 (1975-01-01), Laurent et al.
patent: 4360604 (1982-11-01), Gagliani et al.
patent: 4425441 (1984-01-01), Gagliani et al.

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