Sanyo Chemical Industries, Ltd.

Yuko Sugimoto

Tomohisa Kato

Hiroshi Odajima

Satoshi Utsui

Eiji Iwawaki

Shinichi Fujita

Mana Sanpei

Masaru Honda

Keisuke Miyamoto

Provided is an antistatic agent (Z) containing:

Antistatic agent

An antistatic agent for thermoplastic resins (Z) containing a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units, and a C6-C18 branched alkylbenzenesulfonate (S); an antistatic resin composition (Y) containing the antistatic agent (Z) and a thermoplastic resin (E); and a molded article of the antistatic resin composition (Y).

Antistatic agent for thermoplastic resin

The toner binder of the present invention contains a crystalline resin (A) and a resin (B) that is a polyester resin or its modified resin, the polyester resin being obtained by reaction of an alcohol component (X) and a carboxylic acid component (Y) as raw materials, wherein a temperature (Tp) of the top of an endothermic peak derived from the crystalline resin (A) as measured by a differential scanning calorimeter (DSC) is in the range of 40&#xb0; C. to 100&#xb0; C., and endothermic peak areas Sand Sduring heating satisfy the following equation.()&#xd7;100&#x2265;35&#x2003;&#x2003;(1)Sis an area of the endothermic peak derived from the crystalline resin (A) in the first heating process, and Sis an area of the endothermic peak derived from the crystalline resin (A) in the second heating process, when the toner binder is heated, cooled, and heated.

Toner binder, and toner

The toner binder of the present invention contains a crystalline resin (A) and a resin (B) that is a polyester resin or its modified resin, the polyester resin being obtained by reaction of an alcohol component (X) and a carboxylic acid component (Y) as raw materials, wherein a temperature (Tp) of the top of an endothermic peak derived from the crystalline resin (A) as measured by a differential scanning calorimeter (DSC) is in the range of 40&#xb0; C. to 100&#xb0; C., and endothermic peak areas Sand Sduring heating satisfy the following equation.()&#xd7;100&#x2267;35&#x2003;&#x2003;(1)Sis an area of the endothermic peak derived from the crystalline resin (A) in the first heating process, and Sis an area of the endothermic peak derived from the crystalline resin (A) in the second heating process, when the toner binder is heated, cooled, and heated.

There is provided a toner binder containing a polyester resin (P) composed of two or more polyester resins that are each obtained by polycondensation of a carboxylic acid component (x) and an alcohol component (y). The alcohol component (y) of at least one polyester resin (P1) constituting the polyester resin (P) comprises 30 to 100 molar % of an adduct (y1) of bisphenol A with 2 to 4 ethylene oxide molecules. The alcohol component (y) of at least one other polyester resin (P2) constituting the polyester resin (P) comprises 50 to 95 molar % of an aliphatic diol (y2) having 2 to 4 carbon atoms. The (P2) is other than the (P1), and the polyester resin (P) satisfies relationships as follows. 11.5&#x2266;SP value [(cal/cm)] of (P)&#x2266;13.0; and 5.2&#x2266;HLB value (according to the Oda method) of (P)&#x2266;7.1.

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Kyoto, Japan

Yuko Sugimoto