Crosslinkable bis-imidyl derivatives

Claim 1

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 2 , the R 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 1 s independently of one another have the same meaning as the R 2 s or two adjacent R 1 s together represent the --O-- grouping, the A s independently of one another represent a radical of the formula ##STR27## R 3 and R 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 a quaternary ammonium cartion, 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 1 represents alkylene of 2 to 10 carbon atoms, 1,3-phenylene or 1,4-phenylene.