US 9,811,013 B2
Toner binder and toner
Yuya Iwagoe, Kyoto (JP); and Masaru Honda, Kyoto (JP)
Assigned to SANYO CHEMICAL INDUSTRIES, LTD., Kyoto-shi (JP)
Filed by SANYO CHEMICAL INDUSTRIES, LTD., Kyoto-shi, Kyoto (JP)
Filed on Mar. 18, 2015, as Appl. No. 14/661,841.
Application 14/661,841 is a division of application No. 13/878,071, abandoned, previously published as PCT/JP2011/005611, filed on Oct. 5, 2011.
Claims priority of application No. 2010-226976 (JP), filed on Oct. 6, 2010; and application No. 2011-076650 (JP), filed on Mar. 30, 2011.
Prior Publication US 2015/0192871 A1, Jul. 9, 2015
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 9/087 (2006.01); G03G 9/08 (2006.01); C08G 63/16 (2006.01); C08L 67/02 (2006.01)
CPC G03G 9/08755 (2013.01) [C08G 63/16 (2013.01); C08L 67/02 (2013.01); G03G 9/0819 (2013.01); G03G 9/0827 (2013.01); G03G 9/08795 (2013.01); G03G 9/08797 (2013.01)] 2 Claims
 
1. A toner binder containing a polyester resin (P) comprising one or more types of polyester resins obtained by polycondensation of a carboxylic acid component (x) and an alcohol component (y), wherein at least one type (P1) of (P) contains 50 to 95 mol % of an aliphatic diol (y1) having a carbon number of 2 to 4 in the alcohol component (y), and (P) satisfies expressions (1) and (2),
11.5≤SP value [(cal/cm3)1/2] of (P)≤13.0  (1) and
5.2≤HLB value [by Oda method] of (P)≤7.1  (2),
wherein the polyester resin (P1) is one obtained by esterifying 5 mol % or more of the terminal hydroxyl groups with a monocarboxylic acid (x1), one obtained by esterifying 5 mol % or more of the terminal carboxyl groups with a monool, or one obtained by modifying 5 mol % or more of the terminal hydroxyl groups into vinyl groups, and
wherein the polyester resin (P) further satisfies the following expression (3):
Mn of (p)≤3.3×Tg of (P)×the SP value of (P)  (3),
wherein Tg represents a glass transition temperature, and Mn represents a number average molecular weight.