Centre D'etude Des Materiaux Organiques Pour Technologies Avancees

Centre D'etude Des Materiaux Organiques Pour Technologies Avances

Jean Malinge

Bernard Sillion

Guy Rabilloud

Polymer compositions comprising poly(benzhydrolimide) chains ending with ethylenic unsaturated groups complying with the general formula: ##STR1## wherein Ar is a divalent aromatic radical and R a hydrogen atom or a monovalent hydrocarbon radical. They can be prepared by reacting, under imidation condition, at least one primary diamine with at least one benzydrol 3,3', 4,4'-tetracarboxylic acid, a bis (ortho-acid-ester) or a tetraester of such acid and with an anhydride, an acid-ester or a diester of dicarboxylic cycloaliphatic acid with ethylenic unsaturation. These compositions may be converted to cross-linked polymides by thermal polyemrization. They can be used in particular for manufacturing composite materials, adhesives, molded articles and protective coatings withstanding high temperatures.

Polybenzhydrol compositions ending with ethylenic unsaturated groups,

The disclosed compositions of polyaryloxypyridine oligomers with phthalonile end groups are obtained by formation of a composition of polyaryloxypyridine oligomers with alkali phenolate end groups, followed with the reaction of said composition with 4-nitrophthalonitrile. Their average polycondensation degree may range from 1 to 50. They can be used in combination with a co-reactant derived from benzhydrol and containing one or two ortho-dinitrile functional groups, to constitute polyaryloxypyridine co-polyphthalocyanine lattices.

Compositions of polyaryloxypyridine oligomers with phthalonitrile end

Aromatic polyimide compositions, precursors of copolyphthalocyanine-imides, heir manufacturing process and the resultant copolyphthalocyanine-imides, are described. These compositions may result for the reaction of 80.degree.-300.degree. C. of an aromatic tetra acid, diester-diacid, tetraester or dianhydride compound of formula: ##STR1## with an aromatic amino-dinitrile ##STR2## and optionally an aromatic diamine NH.sub.2 --Ar--NH.sub.2. A subsequent heating at 200.degree.-300.degree. C. provides, by cross-linking, copolyphthalocyanine-imides, which are hardened resins, stable at 250.degree.-300.degree. C. in continuous use.

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Givors, France

Jean Malinge