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:
Sep. 16, 2014
Filed:
Sep. 30, 2010
Norihiro Fukuri, Wakayama, JP;
Takashi Kubo, Wakayama, JP;
Katsutoshi Aoki, Wakayama, JP;
Yasunori Inagaki, Wakayama, JP;
Norihiro Fukuri, Wakayama, JP;
Takashi Kubo, Wakayama, JP;
Katsutoshi Aoki, Wakayama, JP;
Yasunori Inagaki, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
A polyester for a toner obtained by polycondensing an aliphatic hydroxycarboxylic acid compound having a total number of hydroxy group or groups and carboxyl group or groups of 4 or more; an alcohol component containing an aliphatic diol having a hydroxyl group bound to a secondary carbon atom in an amount of 50% by mol or more; and a carboxylic acid component, provided that the aliphatic hydroxycarboxylic compound is not included, wherein the aliphatic hydroxycarboxylic acid compound and the aliphatic diol having a hydroxyl group bound to a secondary carbon atom are in a molar ratio, i.e. the aliphatic hydroxycarboxylic acid compound/the aliphatic diol having a hydroxyl group bound to a secondary carbon atom, of from 0.05 to 0.8; a resin binder for a toner, containing the polyester; and a toner for electrophotography, containing the resin binder. The polyester for a toner of the present invention is suitably used for a resin binder of a toner usable in development or the like of latent images formed in, for example, electrophotography, electrostatic recording method, electrostatic printing method or the like.