Toda Kogyo Corporation

Yusuke Shimohata

Kazuyuki Hayashi

Hiroko Morii

Keisuke Iwasaki

Mineko Ohsugi

Koso Aoki

Nobuya Shimo

Kohei Uehara

The present invention provides aniline black comprising no harmful substances such as chromium and copper in its products and having an excellent blackness and a high resistivity value, as well as provides a black resin composition, a water-based dispersion and a solvent-based dispersion which are colored with the aniline black and have an excellent dispersibility. The aniline black according to the present invention has a sulfur content of 0.2 to 6.0% by weight and comprises primary particles having an average major axis diameter of 0.05 to 0.80 &#x3bc;m.

Aniline black having specific sulfur content, and resin composition and water-based and solvent-based dispersions using the aniline black

A color agent for a road marking material comprising composite particles having an average particle diameter of 0.01 to 10.0 &#x3bc;m, said composite particles comprising: inorganic particles; a gluing agent coating layer formed on surface of said inorganic particle; and an organic pigment coat formed onto said gluing agent coating layer in an amount of from 1 to 500 parts by weight based on 100 parts by weight of said inorganic particles. The color agent for a road marking material, contains no harmful elements and exhibits excellent tinting strength, hiding power, light resistance and heat resistance, and is suppressed in surface activity thereof. The road marking material using the color agent, shows a less change in hue with the passage of time and an excellent retroreflective property.

Color agent for road marking material and road marking material using the same

Black composite particles for a semiconductor sealing material of the present invention, comprises:

Black composite particles for semiconductor sealing material, and semiconductor sealing material using the same

Composite particles, and tread rubber composition, paint and resin composition using the same

Black composite iron oxide pigment, and paint and resin composition using the same

Organic and inorganic composite pigments having an average particle diameter of 0.01 to 10.0 &mgr;m composed of a white inorganic particle, an organosilane compound obtained from alkoxysilanes, or polysiloxanes coating on the white inorganic particle, and an organic pigment coat formed on said coating. An ultraviolet light-absorbing agent is present in any portion from the surface of the white inorganic particle to surface of the organic pigment coat. These composite pigments have reduced amounts of organic pigments desorbed from their surface and exhibit excellent light resistance due to their ultraviolet absorbing property.

Organic and inorganic composite pigments, and paint and resin composition using the same

Magnetic composite particles for black magnetic toner and black magnetic toner using the same

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Hiroshima, Japan

Yusuke Shimohata