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:
May. 18, 2010
Filed:
Jul. 03, 2008
Eiji Shirai, Wakayama, JP;
Yoshitomo Kimura, Wakayama, JP;
Yasunori Inagaki, Wakayama, JP;
Takashi Kubo, Wakayama, JP;
Naoki Morita, Wakayama, JP;
Ryo Koike, Wakayama, JP;
Hiromi Iida, Wakayama, JP;
Eiji Shirai, Wakayama, JP;
Yoshitomo Kimura, Wakayama, JP;
Yasunori Inagaki, Wakayama, JP;
Takashi Kubo, Wakayama, JP;
Naoki Morita, Wakayama, JP;
Ryo Koike, Wakayama, JP;
Hiromi Iida, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
A promoter for a polycondensation reaction used together with a catalyst in a polycondensation reaction, the promoter for a polycondensation reaction comprising a pyrogallol compound having a benzene ring of which three hydrogen atoms adjacent to each other are substituted by hydroxyl groups; and a polycondensation resin obtained by polycondensing raw material monomers using the promoter as defined above and the catalyst. A polycondensation resin can be produced using the promoter of the present invention together with a catalyst in a polycondensation reaction, and the polycondensation resin can be used in various applications including, for example, films, sheets, fibers, toner materials for electrophotography, and the like.