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:
Oct. 01, 1991
Filed:
Aug. 20, 1990
Hirofusa Shirai, Chiisagata, JP;
Naomi Masuda, Shizuoka, JP;
Tatsuya Hongu, Nerima, JP;
Nobuhisa Tsutsumi, Itano, JP;
Hirofusa Shirai & Nisshinbo Industries, Inc., Tokyo, JP;
Abstract
A polyurethane containing a metal phthalocyanine in the main chain is a novel compound and can be divided into two groups; one of which is a linear polymer and the other of which is a cross-linked polymer. This substance is useful as a redox catalyst due to the peculiar properties of the metal phthalocyanine. The polyurethane can be prepared by reacting a metal phthalocyanine polycarboxylic acid with thionyl chloride to obtain a metal phthalocyanine polycarboxylic acid polychloride; synthesizing a metal phthalocyanine polyhydroxy ester from the metal phthalocyanine polycarboxylic acid polychloride and a diol: HO--R.sup.1 --OH through a dehydrochlorination; and then addition-condensation-polymerizing the resulting metal phthalocyanine polyhydroxy ester, a diol: HO--R.sup.2 --OH and a diisocyanate. The polyurethane containing a metal phthalocyanine in the main chain is dissolved in an organic solvent to obtain a stock solution for spinning and the stock solution is spun according to a wet spinning technique to give a polyurethane fiber comprising the polyurethane containing a metal phthalocyanine in the main chain.