Method of preparing a crosslinking oligomer

摘要

Solvent resistance in polyimide, polyamide, and other resins can be improved by capping these resing with mono- or difunctional crosslinking end caps. Imidophenylamines of the general formula: <IMAGE> <IMAGE> <IMAGE> <IMAGE> R1=lower alkyl, lower alkoxy, aryl, aryloxy, substituted alkyl, substituted aryl, halogen, or mixtures thereof; Me=methyl; T=allyl or methallyl; i=1 or 2; j=0, 1 or 2; and G=-CH2-, -O-, -S-, or -SO2-. comprise a new family of end cap monomers that are reactants in the synthesis of crosslinking, solvent resistant oligomers.