Thermosetting composition from bis-imide, N-vinyl pyrrolidone an

Details Thermosetting composition from bis-imide, N-vinyl pyrrolidone an Thermosetting composition from bis-imide, N-vinyl pyrrolidone an

1978-01-05

1979-11-06

Anderson, Harold D.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525196, 525183, 528322, C08L 6706, C08L 7908

Patent

active

041735951

ABSTRACT:
A thermosetting composition is disclosed characterized in that it comprises (by weight) from 60 to 90% of a bis-maleimide of the formula: ##STR1## in which A represents a divalent radical chosen from the group consisting of phenylene radicals and radicals of the formula: ##STR2## where T represents --CH.sub.2 --, --C(CH.sub.3).sub.2 --, --O-- or --SO.sub.2 --; and from 10 to 40% of N-vinylpyrrolid-2-one. The preferred bis-maleimide is N,N'-(4,4'-diphenylmethane)-bis-maleimide. The composition may be modified by the addition of an unsaturated polyester. The composition is useful for the manufacture of molded articles or of articles having a cellular structure, or for the impregnation of electrical coils.

REFERENCES:
patent: 3712933 (1973-01-01), Ducloux et al.
patent: 3761430 (1973-09-01), Witzel
patent: 4035345 (1977-07-01), Ducloux et al.

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