Crosslinkable bis-imidyl derivatives

A crosslinkable compound of the formula ##STR25## wherein the X s independently of one another represent hydrogen or, if the radical ##STR26## is in the 4-position of the benzene ring, also --COR.sub.2, the R.sub.2 s independently of one another represent hydroxyl, phenoxy;

• phenoxy substituted by one or two nitro groups, by one alkyl of 1 to 2 carbon atoms, by one alkoxy of 1 to 2 carbon atoms or by two or five halogen atoms;
• alkoxy of 1 to 18 carbon atoms or an O-M+ group,
• the R.sub.1 s independently of one another have the same meaning as the R.sub.2 s or two adjacent R.sub.1 s together represent the --O-- grouping,
• the A s independently of one another represent a radical of the formula ##STR27## R.sub.3 and R.sub.4 independently of one another represent hydrogen, chlorine, bromine or methyl,
• M+ represents an alkali metal cation, a trialkylammonium cation having 3-24 carbon atoms, or the benzyltrimethylammonium or tetramethylammonium cation,
• Q represents --NH--, and
• Y represents a structural element of the formula ##STR28## wherein a represents a number from 1-100, Z represents alkylene of 2 to 10 carbon atoms, 1,3-phenylene, 1,4-phenylene, the 4,4'-diphenylmethane group, the 4,4'-diphenylsulfone group or the 4,4'-diphenyl ether group, and
• Z.sub.1 represents a benzenetriyl group, in which the ##STR29## group is bound to ortho carbons of Z.sub.1.