PURPOSE: To obtain a polyimide adhesive which exhibits a strong adhesion and can retain a high adhesive power even at high temps. without detriment to its heat resistance.
CONSTITUTION: This heat-resistant adhesive is made from a polymer which has at least two kinds of repeating units and is obtd. by reacting 1,3-bis(3- aminophenoxy)benzene with a mixture of at least two tetracarboxylic acid dianhydrides selected from among ethylenetetracarboxylic dianhydride, cyclopentanetetracarboxylic dianhydride, pyromellitic dianhydride, 3,3',4,4'- benzophenonetetracarboxylic dianhydride, 2,2',3,3'-benzophenonetetracarboxylic dianhydride, 3,3',4,4'-biphenyltetracarboxylic dianhydride, 2,2,3,3- biphenyltetracarboxylic dianhydride, 2,2-bis(3,4-dicarboxyphenyl)propane- dianhydride, 2,2-bis (2,3-dicarboxyphenyl)propane dianhydride, etc.
KAWASHIMA SABURO
SONOBE YOSHIO
OTA MASAHIRO
YAMAGUCHI TERUHIRO
