Kao Corporation

Hiroki Kakiuchi

Kohei Katayama

Hirotaka Kashiwagi

Eiji Shirai

Ryoichi Hashimoto

Norihiro Fukuri

Yasuhiro Hidaka

Shogo Watanabe

Kouta Ijichi

Hideaki Kondo

The present invention provides an asphalt composition containing an asphalt and a polyester, the polyester being a polycondensate of a polyethylene terephthalate, an alcohol, and a carboxylic acid compound, the polyethylene terephthalate having a value of [(a quantity of heat absorbed in a DSC measurement)−(a quantity of heat generated in a DSC measurement)] of 5 J/g or more and 30 J/g or less and having an intrinsic viscosity (IV) of 0.6 or more and 1.05 or less.

Asphalt composition

An asphalt composition containing asphalt and an asphalt modifier is provided. The asphalt modifier contains a polyesteramide, which contains an alcohol component-derived structural unit, a carboxylic acid component-derived structural unit, and a polyamide component-derived structural unit.

An asphalt composition containing asphalt and polyester, wherein a content of asphaltene in the asphalt is 18% by mass or more and 40% by mass or less, and a content of the polyester is 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the asphalt.

A toner for electrophotography containing a resin binder containing a crystalline composite resin C and an amorphous polyester A and an ester wax, wherein the crystalline composite resin C is a resin containing a polycondensation resin component and a styrenic resin component, wherein the polycondensation resin component is obtained by polycondensing an alcohol component containing an aliphatic diol having 9 or more carbon atoms and 14 or less carbon atoms, and a carboxylic acid component containing an aliphatic dicarboxylic acid compound having 9 or more carbon atoms and 14 or less carbon atoms, wherein a mass ratio of the amorphous polyester A to the crystalline composite resin C (amorphous polyester A/crystalline composite resin C) is 60/40 or more and 95/5 or less, and wherein a mass ratio of the crystalline composite resin C to the ester wax (crystalline composite resin C/ester wax) is 0.5 or more and 9 or less. The toner for electrophotography of the present invention is suitably used in development of latent images or the like which is formed in electrostatic development method, electrostatic recording method, electrostatic printing method or the like.

Toner for electrophotography

A toner for electrophotography containing a resin binder containing a crystalline resin and an amorphous resin, and a releasing agent, wherein the crystalline resin contains a crystalline composite resin C containing a polycondensation resin component and a styrenic resin component, wherein the polycondensation resin component is obtained by polycondensing a specified alcohol component and a specified carboxylic acid component, and wherein the amorphous resin contains an amorphous composite resin AC containing a polycondensation resin component and a styrenic resin component, wherein the polycondensation resin component is obtained by polycondensing an alcohol component and a specified carboxylic acid component, and an amorphous polyester AP obtained by polycondensing an alcohol component and a specified carboxylic acid component, wherein a softening point of the amorphous polyester AP is higher than a softening point of the amorphous composite resin AC, wherein a difference in softening points between the amorphous polyester AP and the amorphous composite resin AC is 10&#xb0; C. or more and 50&#xb0; C. or less. The toner for electrophotography of the present invention is suitably used in development of latent images or the like which is formed in, for example, electrostatic development method, electrostatic recording method, electrostatic printing method or the like.

Electrophotography toner

The present invention relates to a resin binder for toners which contains a crystalline polyester which is produced by polycondensing at least an alcohol component containing an aliphatic diol having 2 to 12 carbon atoms and a carboxylic acid component containing an aliphatic dicarboxylic acid compound having 8 to 12 carbon atoms in an amount of from 70 to 100 mol %, wherein a content of a methyl ethyl ketone soluble component (at 20&#xb0; C.) in the crystalline polyester is from 0.5 to 7% by weight on the basis of a weight of the crystalline polyester, and a difference between a melting point of the crystalline polyester and a peak top temperature observed in DSC measurement of the methyl ethyl ketone soluble component ('melting point of the crystalline polyester'&#x2212;'peak top temperature observed in DSC measurement of the methyl ethyl ketone soluble component') is within the range of from 1 to 15&#xb0; C.

Growing community of inventors

Izumiotsu, Japan

Hiroki Kakiuchi