Water-solubilized resin composition

Details Water-solubilized resin composition Water-solubilized resin composition

C - Chemistry, Metallurgy

08

L

400/7302

C08L 79/08 (2006.01) C08G 73/10 (2006.01)

Patent

CA 1085528

ABSTRACT OF THE DISCLOSURE A water-solubilized resin composition for forming a thermally stable polyimide polymer prepared by mixing a nitro- genous base salt of a polyimide precursor containing an amino group at both terminals of the molecule and having a residual acid value of about 50 to about 5% obtained by reacting 1,2,3,4-butanetetracarboxylic acid and a molar excess of a diamine in water, or in a water-soluble solvent or in the presence of both a water-soluble solvent and water with a nitrogenous base salt of a 3,3',4,4'-benzophenonetetracarboxylic acid diester whose ester linkage is positioned at either one of the adjoining two carboxyl groups in the same benzene nucleus thereof.

281511

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