Crosslinkable polymers of compounds containing 5-maleimidyl-isophthalic acid derivatives

Claim 1

A crosslinkable polymer with an average molecular weight of at least 1000, which is characterized in that it consists of 0.5 to 100 mol % of recurring structural elements of the formula III ##STR43## and 0 to 99.5 mol % of recurring structural elements of the formula IV ##STR44## and contain at least three structural elements of the formula III, and the --CO--groups in formula III are bonded to the benzene ring in the 2,3-, 3,4- or 2,3-position, m and n independently of one another represent the number 1 or 2, A 2 represents a radical of the formula ##STR45## R 2 and R 3 independently of one another represent hydrogen, chlorine or bromine, X and Y independently of one another represent ##STR46## where R 4 is hydrogen, alkyl with 1 to 4 carbon atoms or phenyl, Q represents an aliphatic radical with at least 2 carbon atoms or a cycloaliphatic, araliphatic, carbocyclic-aromatic or heterocyclic-aromatic radical, or --Y--Q--X-- represents the grouping ##STR47## R 5 and R 6 independently of one another represent hydrogen, methyl or phenyl and Q 1 represents an aliphatic radical or represents a cycloaliphatic, carbocyclic-aromatic or heterocyclic-aromatic radical in which the carbonyl and carboxyl groups are bonded to different carbon atoms and the carboxyl groups are each in the ortho-position relative to a carbonyl group, or the corresponding cyclized imide derivative.