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. 05, 2013
Filed:
Mar. 02, 2011
Eiji Shirai, Wakayama, JP;
Shoichi Murata, Wakayama, JP;
Eiji Shirai, Wakayama, JP;
Shoichi Murata, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
The present invention relates to a resin binder for toners which includes core/shell particles each including a core portion containing a crystalline polyester obtained by polycondensing an alcohol component containing an aliphatic diol having 2-12 carbon atoms and a carboxylic acid component containing an aliphatic dicarboxylic acid compound having 8-12 carbon atoms in an amount of 70-100 mol %, and a non-crystalline resin (A) obtained by polycondensing an alcohol component and a carboxylic acid component containing at least one succinic acid compound selected from the group consisting of an alkyl (C-C) succinic acid and an alkenyl (C-C) succinic acid in an amount of 3-60 mol %; and a shell portion containing a non-crystalline resin (B) obtained by polycondensing a carboxylic acid component and an alcohol component containing an aliphatic dialcohol having 2-5 carbon atoms in an amount of 80 mol % or more.