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:
Mar. 15, 2011
Filed:
Apr. 17, 2007
Takaki Jono, Yokohama, JP;
Naotaka Izumi, Yokohama, JP;
Iku Ohki, Yokohama, JP;
Mitsuru Chiba, Yokohama, JP;
Takaki Jono, Yokohama, JP;
Naotaka Izumi, Yokohama, JP;
Iku Ohki, Yokohama, JP;
Mitsuru Chiba, Yokohama, JP;
Nippon Polyurethane Industry Co., Ltd., Tokyo, JP;
Abstract
A aqueous modified polyisocyanate intended to be dispersed in an aqueous medium for use and obtained by reacting an HDI derivative with (A) a modifying agent composed of a methoxy polyoxyalkylene glycol mainly comprising an ethylene oxide unit, (B) a modifying agent composed of a hydroxyl group-terminated polyoxyalkylene glycol produced by using an alcohol having 8 or more carbon atoms as an initiator and mainly comprising a propylene oxide unit, and (C) a modifying agent composed of an ester compound having at least one hydroxyl group with an alkali metal salt of sulfonic acid introduced therein, wherein the concentration (calculated value) of the alkali metal salt of sulfonic acid derived from the modifying agent (C) is 1.5 to 25 μmol/g. The aqueous modified polyisocyanate is not only excellent in dispersion stability in water but also excellent in stability of the isocyanate group in water even under temperature conditions of 35 ° C. or higher.