公开(公告)号：US20200089139A1

公开(公告)日：2020-03-19

申请号：US16616314

申请日：2018-03-22

Applicant: KAO CORPORATION

Inventor： Norihiro HIRAI ,  Tomohide YOSHIDA ,  Takashi KANNO

IPC: G03G9/087

Abstract: Provided are a toner for developing electrostatic images excellent in low-temperature fusing property, gloss and carrier contamination resistance, and a wax dispersant. [1] A toner for developing electrostatic images, containing an amorphous composite resin (A), an amorphous polyester resin (B), and a wax, wherein the amorphous composite resin (A) contains a polyester resin segment which is a polycondensate of an alcohol component containing an aromatic diol and a carboxylic acid component containing an aliphatic dicarboxylic acid whose main chain has 8 or more and 14 or less carbon atoms, a vinylic resin segment of an addition polymer of a raw material monomer containing a styrenic compound, and a constitutional unit derived from a bireactive monomer, the constitutional unit bonding to the polyester resin segment and the vinylic resin segment each via a covalent bond; and has a glass transition temperature not lower than 45° C., and the ratio by mass of the amorphous composite resin (A) to the amorphous polyester resin (B) [(A)/(B)] is 1/99 or more and 60/40 or less; and [2] a wax dispersant containing the amorphous composite resin (A).

公开(公告)号：US20140120465A1

公开(公告)日：2014-05-01

申请号：US14046021

申请日：2013-10-04

Applicant: Kao Corporation

Inventor： Shogo WATANABE ,  Takeshi ASHIZAWA ,  Takashi KUBO ,  Norihiro HIRAI

IPC: G03G9/087

CPC classification number: G03G9/08755 ,  G03G9/081 ,  G03G9/08782 ,  G03G9/08797

Abstract: A method for producing a toner for electrostatic image development including the step of melt-kneading a mixture containing a resin binder and a wax, wherein the resin binder contains an amorphous polyester (A) obtained by polycondensing an alcohol component containing an aliphatic diol (a) having 3 or 4 carbon atoms, the aliphatic diol having a hydroxyl group bonded to a secondary carbon atom, and an aliphatic diol (b) containing one or more α,ω-linear alkanediols having 2, 4, 6 or 8 carbon atoms, and a carboxylic acid component. The toner for electrostatic image development can be suitably used in, for example, the development or the like of latent image formed in an electrostatic development method, an electrostatic recording method, an electrostatic printing method, or the like

Abstract translation: 一种静电图像显影用调色剂的制造方法，其特征在于，包括熔融捏合含有树脂粘合剂和蜡的混合物的工序，其中，所述树脂粘合剂含有通过使含有脂肪族二醇的醇成分缩聚得到的无定形聚酯（A） 具有3或4个碳原子的脂族二醇，具有与仲碳原子键合的羟基的脂族二醇和含有一个或多个具有2,4,6或8个碳原子的α，ω-直链烷二醇的脂族二醇（b） 和羧酸组分。 用于静电图像显影的调色剂可以适用于例如静电显影方法形成的潜像的显影等，静电记录方法，静电印刷方法等