The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 1980
Filed:
Mar. 30, 1977
Katsuhiko Yamaguchi, Ibaraki, JP;
Yasuhiro Suzuki, Ibaraki, JP;
Makoto Komima, Ibaraki, JP;
Hiroshi Shibata, Ibaraki, JP;
Nitto Electric Industrial Co., Ltd., Ibaraka, JP;
Abstract
A method for stabilizing a water-soluble resin composition which comprises adding, as a stabilizing agent, a carbonate and/or an organic carboxylate of a basic nitrogenous compound to the water-soluble composition in an amount of from about 0.01 to about 10 parts by weight based on 100 parts by weight of the resin content in the water-soluble composition, the water-soluble composition being prepared by condensation reacting an acid component consisting of 1,2,3,4-butane tetracarboxylic acid alone or a polycarboxylic acid component containing at least about 50 mol% of 1,2,3,4-butane tetracarboxylic acid and a diamine in the presence of a water-soluble solvent or, optionally, in the presence of the water-soluble solvent and water to obtain a condensation product having a residual acid value ratio of about 3 to about 50% of the acid value before condensation followed by formation of a salt of the condensation product with a basic nitrogenous compound.