Method for producing polyimide resin
AssigneeSumitomo Bakelite Co., Ltd.
InventorsYoshiyuki Yamamori, Hiroyuki Yasuda
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Abstract
The object of the present invention is to provide a method capable of producing polyimide resins having excellent heat resistance, which can utilize inexpensive monomers and does not use solvents. The method comprises mixing, in the absence of a solvent, a diamine and at least one tetracarboxylic acid component selected from the group consisting of a tetracarboxylic acid, a tetracarboxylic acid monoanhydride and a tetracarboxylic acid dianhydride capable of forming two imide rings upon cyclization, and then heat-treating the mixture.
Claims2
A method for producing a polyimide resin which comprises mixing a diamine and at least one tetracarboxylic acid component selected from the group consisting of a tetracarboxylic acid, a tetracarboxylic acid monoanhydride and a tetracarboxylic acid dianhydride capable of forming two imide rings upon cyclization in the absence of a solvent and then heat-treating the mixture.
Dependencies are inferred from the claim text.