公开(公告)号：US20200254805A1

公开(公告)日：2020-08-13

申请号：US16636515

申请日：2018-11-21

Applicant: KAO CORPORATION

Inventor： Norihiro FUKURI ,  Hiroto SOMA ,  Christopher JOHNSON

IPC: B41M5/52 ,  C08L67/02

Abstract: A resin dispersion for dye receiving layer of a thermal transfer image-receiving sheet, including a polyester resin particle and an aqueous medium. The polyester resin particle includes a polyester resin that is a polycondensate of an alcohol component including at least one of a propylene oxide adduct of 2,2-bis(4-hydroxyphenyl)propane and an ethylene oxide adduct of 2,2-bis(4-hydroxyphenyl)propane, and a carboxylic acid component including an aliphatic dicarboxylic acid compound having a carbon number of 6 or more and 10 or less. A molar ratio of the propylene oxide adduct of 2,2-bis(4-hydroxyphenyl)propane to the ethylene oxide adduct of 2,2-bis(4-hydroxyphenyl)propane in the alcohol component is 0/100 or more and 40/60 or less. A molar ratio of the ethylene oxide adduct of 2,2-bis(4-hydroxyphenyl)propane to the aliphatic dicarboxylic acid compound having a carbon number of 6 or more and 10 or less is 2.1 or more and 15 or less.

公开(公告)号：US20190161575A1

公开(公告)日：2019-05-30

申请号：US16114437

申请日：2018-08-28

Applicant: KAO CORPORATION

Inventor： Norihiro FUKURI ,  Christopher JOHNSON

IPC: C08G63/676 ,  G03G9/087

Abstract: Embodiments of the present invention are concerned with a method for producing a binder resin composition, from which a toner having excellent low-temperature fusing property, heat-resistant storage stability, durability, and image density is obtained, a binder resin composition, and a toner for development of electrostatic images including the binder resin composition.Embodiments according to the present invention are concerned with the following [1] to [3]. [1] A method for producing a binder resin composition including the following steps (1) and (2): step (1): mixing an aromatic alcohol A1 including an alkylene oxide adduct of bisphenol A and at least one carboxylic acid compound selected from fumaric acid and maleic acid; and step (2): further adding an aromatic alcohol A2 including an alkylene oxide adduct of bisphenol A to the mixture obtained in the step (1) and mixing, wherein the binder resin composition includes a polyester resin having an acid value of 14 mgKOH/g or more and 30 mgKOH/g or less, and a total content of fumaric acid and maleic acid is 700 ppm by mass or less relative to the binder resin composition; and in the steps (1) and (2), a total amount of fumaric acid and maleic acid is 95 parts by mol or more and 105 parts by mol or less on the basis of 100 parts by mol of a total amount of the aromatic alcohol A1 and the aromatic alcohol A2. [2] A toner for development of electrostatic images, including the binder resin composition obtained by the production method as set forth in [1]. [3] A binder resin composition including a polyester resin that is a polycondensate of an alcohol component including an alkylene oxide adduct of bisphenol A and a carboxylic acid component including at least one carboxylic acid compound selected from fumaric acid and maleic acid, wherein the polyester resin has an acid value of 14 mgKOH/g or more and 30 mgKOH/g or less, and in the binder resin composition, a total content of fumaric acid and maleic acid is 700 ppm by mass or less relative to the binder resin composition, and a total amount of fumaric acid and maleic acid is 95 parts by mol or more and 105 parts by mol or less on the basis of 100 parts by mol of a total amount of the alcohol component.