process for the manufacture of nateriau0 electroisolantes thermorecticulaires resinespolyimidiques base

摘要

the invention presents a process for manufacture of electrical insulating materials on the basis of rasini poliimidice termoreactive type bis - maleimidic.the reaction of anhydride and amine maleica fragrant takes place in gamabutirolactona and phenolic solvents, such as bis - phenol novolac resin, fenolica.resin fenolica is reactionata at equivalent of epoxy resin. with the impregnation material thus obtained, on the basis of stretificate get glass fabrics.