Imidyl-benzene-dicarboxylic and-tricarboxylic acid derivatives

Abstract From the Canadian patent

New imidyl-benzenedicarboxylic and -tricarboxylic acid derivatives of the formulae, and wherein A denotes a radical of the formula , , , or , R1 and R2 indepen-, dently of one another denote hydrogen chlorine or bromine, and R3 and R4 denote various functional groups such as, -OH or alkoxy groups, and a process for their manufacture are described. These imidyl-benzenedicarboxylic and -tricarboxylic acid derivatives are suitable for the manufacture of crosslinkable polymers, particularly polycondendation and polymerisation products which are distinguished by good processability and good solubility in customary organic solvents. Imidyl compounds of the above formulae wherein two R4 s form an …