	US 11,886,144 B2
	Binder resin composition for toner
Motomu Shibata, Takaishi (JP); and Shoichi Murata, Wakayama (JP)
Assigned to KAO CORPORATION, Tokyo (JP)
Appl. No. 16/979,394
Filed by KAO CORPORATION, Tokyo (JP)
PCT Filed Feb. 21, 2019, PCT No. PCT/JP2019/006525 § 371(c)(1), (2) Date Sep. 9, 2020, PCT Pub. No. WO2019/176493, PCT Pub. Date Sep. 19, 2019.
Claims priority of application No. 2018-044565 (JP), filed on Mar. 12, 2018; and application No. 2018-145072 (JP), filed on Aug. 1, 2018.
Prior Publication US 2021/0003933 A1, Jan. 7, 2021
Int. Cl. G03G 9/087 (2006.01); C08G 81/00 (2006.01); C08L 87/00 (2006.01)

CPC G03G 9/08788 (2013.01) [C08G 81/00 (2013.01); C08L 87/005 (2013.01); G03G 9/08711 (2013.01); G03G 9/08755 (2013.01); G03G 9/08797 (2013.01)]

21 Claims

1. A toner for developing electrostatic images comprising a binder resin composition, wherein the binder resin composition comprises:

a resin composition (C-P) prepared by condensing an acid group-having crystalline resin (C) and a polyalkyleneimine; and

an amorphous resin (A),

wherein the acid group-having crystalline resin (C) is a crystalline polyester-based resin being a polycondensate of an alcohol component (c-al) and a carboxylic acid component (c-ac), in which the alcohol component (c-al) comprises an α,ω-aliphatic diol having 2 to 16 carbon atoms, and the carboxylic acid component (c-ac) comprises an α,ω-aliphatic dicarboxylic acid having 4 to 14 carbon atoms.