Novel imido copolymers

Details Novel imido copolymers Novel imido copolymers

1990-10-16

1991-07-23

Foelak, Morton

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

Synthetic resins

From carboxylic acid or derivative thereof

528 96, 528117, 528170, G08G 804

Patent

active

050345036

ABSTRACT:
Novel thermostable imido copolymers, well adapted for the production of prepregs useful in the fabrication of multilayer circuits, are prepared by copolymerizing (a) at least one N,N'-bis-maleimide with (b) at least one sterically hindered diprimary diamine, (c) optionally, at least one ethylenically unsaturated non-halogenated comonomer other than a bis-imide (a), (d) optionally, a free radical polymerization initiator, (e) at least one comonomer including a chlorinated or brominated epoxy resin, an N,N'-alkylene-bis-tetrahalogenophthalimide, a compound containing two phenyl radicals directly joined va a single valence bond, a divalent radical or a bridging atom, wherein such compound each phenyl radical is substituted by a (meth)allyloxy radical and by at least two chlorine or bromine atoms, and/or a non-halogenated epoxy resin, and (f) at least one alkenylphenol.

REFERENCES:
patent: 4973649 (1990-11-01), Camberlin

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