Heat-resistant polymers based on polyamines and oligomers possessing imide groups with unsaturated polyester

A heat-resistant or heat-curable polymer consisting essentially of a polymeric composition obtained by reacting, between 50.degree. C. and 350.degree. C.,

• a. an oligomer having the average general formula:
• ##STR32## in which x represents a number from 0.1 to about 2, R represents a divalent hydrocarbon radical with 1 to 8 carbon atoms, which is derived from an aldehyde or ketone of the general formula:
• O .dbd. R (II)
• in which the oxygen atom is bonded to a carbon atom of the radical R, and T represents a divalent organic radical possessing 2 to 24 carbon atoms, the free valencies of which are on adjacent carbon atoms and which is derived from an internal anhydride of the general formula:
• ##STR33## at least 60% of the T radicals in the oligomer containing a polymerizable carbon-carbon double bond optionally substituted by chlorine atoms or methyl groups, any remaining T radicals being alkylene, cycloalkylene, phenylene or naphthylene radicals, with (b) a polyamine of the general formula:
• Q(NH.sub.2).sub.y
• in which y represents an integer at least equal to 2 and Q represents a divalent organic radical E selected from the group consisting of a linear or branched alkylene radical with less than 13 carbon atoms, a phenylene radical, a cyclohexylene radical, a methyl-substituted phenylene or cyclohexylene radical, radicals of the formulae:
• ##STR34## wherein n represents an integer from 1 to 3, a radical consisting of a plurality of phenylene, methyl-substituted phenylene, cyclohexylene or methyl-substituted cyclohexylene radicals connected to one another by a simple valency bnd or by an intert atom or --O--, --S--, an alkylene group with 1 to 3 carbon atoms, --CO--, --SO.sub.2 --, --CONH--, --COO--, --P(O)R.sub.1 --, --CONH--X--NHCO--, ##STR35## wherein R.sub.1 represents a hydrogen atom, an alkyl radical with 1 to 4 carbon atoms, a phenyl radical or a cyclohexyl radical, and X represents an alkylene radical with less than 13 carbon atoms, and a 2- to 4-valent radical of the formula:
• ##STR36## in which x represents a number from 0.1 to 2, the relative amounts being such that the oligomer supplies 1.1 to 50 T radicals containing a polymerizable carbon-carbon double bond per --NH.sub.2 group supplied by the polyamine and (c) an unsaturated polyester prepared by the polycondensation of a polycarboxylic derivative selected from the group consisting of a polycarboxylic acid, anhydride, ester and acid chloride and a polyol at least one of the said polycarboxylic derivative and polyol containing olefinic unsaturation.