Dainichiseika Color & Chemicals Mfg. Co., Ltd.

Ukima Colour & Chemicals Mfg. Co., Ltd.

Masanori Takakamo

Shigeru Sakamoto

Michiei Nakamura

Yoshimasa Tsuchiya

Akio Yoshida

Atsushi Nogami

Kenji Ogawa

Dai Watanabe

Mitsuo Yamazaki

Hiromitsu Yanagimoto

Akira Nishio

Hisao Okamoto

Hiroaki Saikatsu

Naoyuki Sakai

Tetsuo Fukuda

Keiji Nakajima

Nakaji Komiyama

Tohru Hosoda

Hideyuki Koiso

Takamitsu Shinoda

Hiroyoshi Terada

Toshiyasu Fujita

Seishichi Sasaki

Motohisa Maruyama

Takami Minami

Kanako Sato

Toshiaki Anzai

The present invention provides an image-recording/pixel-forming coloring composition containing a phthalocyanine type colorant having at least one group selected from alkyl and alkyloxy groups (alkylphthalocyanine type colorant). According to the present invention, there can also be provided a coloring composition containing a phthalocyanine type colorant capable of exhibiting excellent properties when used as an image-recording coloring composition or pixel-forming coloring composition, production processes of the phthalocyanine type colorants, a coloring method, and the like.

Coloring composition, method for production thereof, and coloring method

A pixel-forming colorant composition contains at least one green colorant selected from the group consisting of the following pigments (A) and (B) and pigment derivative (C): The pixel-forming colorant composition is useful for the formation of G pixels of three primary-color pixels on color filters.

Pixel-forming colorant compositions and their use

An aqueous pigment dispersion is produced by ultrafinely dispersing a pigment dispersion mixture, which has been obtained by mixing at least a pigment and a dispersant in an aqueous medium, with microbeads having diameters of not smaller than 0.02 mm but smaller than 0.2 mm. A color composition for a color filter is produced by dispersing a mixture of a pigment, a dispersant, a resin varnish and a solvent with the microbeads in a mill.

Water-based pigment dispersions, inkjet recording inks, and color filters

A dispersant for an organic pigment contains a compound represented by the following formula (1): wherein Rand Rmay be the same or different and each independently represents a hydrogen atom, a halogen atom, a hydroxyl group, a primary, secondary or tertiary amino group, an alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted phthalimidomethyl group, Rand Rmay be the same or different and each independently represents a hydrogen atom or a lower alkyl group, and n means an average number of introduced sulfonic groups and stands for a number of from 0.5 to 3; or at least one salt selected from the group consisting of its metal salt, ammonium salt, organic amine salt, and organic quaternary ammonium salt. Also disclosed are a readily-dispersing pigment composition, a pigment dispersion, a colored coating fluid for color filters, a fabrication process of a color filter and a color filter, all of which make use of the dispersant.

Dispersants for organic pigments

A composition for a black matrix is disclosed. The composition is composed of a black pigment and a binder for the pigment. The black pigment is a compound-oxide black pigment, which comprises at least two metal oxides and has a spinel or inverse-spinel crystalline structure. Also discloses are a process for the formation of a black matrix from the composition and an article provided with a black matrix so formed.

Composition for black matrix, fabrication process of black matrix and

Growing community of inventors

Chuo-ku, Japan

Masanori Takakamo