Nippon Paint Compnay, Ltd.

Takahito Kishida

Masayuki Maruta

Naoya Yabuuchi

Akira Matsumura

Akihiro Kanakura

Atsushi Kawakami

Masashi Ohata

Makoto Shimizu

Takeshi Oka

Koichi Nagata

Naohito Shingo

Disclosed is a positive type resist composition which can form a good pattern by subjecting a resist layer to plural exposures and developments, which results in excellent adhesion between the resist layer and a substrate. The composition comprises: (a) a polymer having an acid value of 2 to 200, prepared from 20 to 94% by weight of a t-butyl ester of a .alpha.,.beta.-ethylenically unsaturated carboxylic acid, 5 to 79% by weight of a (meth)acrylate of the formula:

Resist composition

Process for producing multicolor display

Process for producing toner

The present invention provides an improved process for producing organic particles (e.g. toner particles) having uniform charge controlling coating and excellent charge controlling effect. In the process, a dispersion comprising the organic particles (A), a specific compound (B) forming insoluble substances upon reacting with an insolubilizer (D) and a dispersing medium is prepared and then reacted with the insolubilizer (D).

Production of surface-modified organic particles

An aqueous coating composition comprising (A) 100 parts by weight of an acrylic resin powder having an acid value of 15 to 200, (B) 25 to 900 parts by weight of an acrylic graft polymer having an acid value of 20 to 100, which is composed of a polymer portion (1) having an acid value of not more than 15 and an acrylic polymer portion (2) having an acid value of 40 to 200, and (C) 3 to 900 parts by weight of a curing agent for curing the component (A) and/or (B).

Aqueous coating composition

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Yao, Japan

Takahito Kishida