Nippon Paint Compnay, Ltd.

Yasuhiko Nakae

Yoshio Eguchi

Hisaki Tanabe

Shingi Nakano

Yutaka Harada

Atsushi Yamada

Haruhiko Sato

Masami Yabuta

Koichi Inoue

Hitoshi Nakatsuka

Kazuhiko Nishimura

Yasuhiro Shibata

Satoshi Urano

Takeshi Endo

Shinji Nakano

Koichi Tsutsui

Hiroharu Ohsugi

Ryozo Takagawa

Tadahiko Nishi

Hisake Tanabe

Shoichi Mure

Shigeru Ishida

A thermosetting powder coating composition prepared by a wet process, which contains a mixture comprising (a) an epoxy-containing acrylic resin, (b) a polycarboxylic acid compound curing agent, (c) fine crosslinked resin particles and, optionally, (d) a resin that exists in the liquid form at room temperature.

Powder coating of epoxy-acrylic resin, polycarboxylic acid and crosslinked resin particles

A thermosetting powder coating composition prepared by a wet process, which contains a mixture comprising (a) an epoxy-containing acrylic resin, (b) a polycarboxylic acid compound curing agent, (c) fine crosslinked resin particles and/or (d) a resin that exists in the liquid form at room temperature.

Powder coating of epoxy-acrylic resin, polycarboxylic acid, crosslinked particles and liquid resin

Finely divided hydrophobic silica powder having a number average particle size from 3 to 10 nm and a BET surface area from 195 to 290 m.sup.2 /g is dry blended with particles of a thermosetting resin composition having a volumetric average particle size from 5 to 20 .mu.m in a proportion from 0.05 to 2.0 parts per 100 parts of the resin particles on weight basis. Sieving efficiency of the powder coating composition thus processed is remarkably improved.

Easily sievable powder coating composition

Disclosed is an acid-epoxy curing type powder coating composition which forms a coated film having excellent yellow resistance and appearance. The powder coating composition comprises:

Powder coating composition of epoxy-containing acrylic, polycarboxylic

A waterborne paint is provided by dissolving or dispersing a polyester resin and a crosslinker in an aqueous medium containing a base. The polyester resin contains a hydroxy-terminated polyalkadienediol having an average degree of polymerization from 5 to 50, a hydrogenated product thereof or a mixture thereof in a proportion from 1 to 30% by weight of the entire polyester-forming reactants, and has an acid number from 5 to 150, a hydroxyl number from 30 to 250. The paint is useful for forming a multilayer coating film on automobile bodies by applying the paint between an electrodeposition coating layer and a top coating layer.

Waterborne polyester paint

Disclosed is a coating composition comprising: (1) a polycarbonate polyol having an average molecular weight of 400-10,000 and a hydroxyl value of 50-350, and (2) a melamine resin curing agent, wherein polyhydric alcohols constituting said polycarbonate polyol comprises at least 10 mol % of branched diols, at least 10 mol % of tri- or higher-hydric alcohols and the balance of the other polyhydric alcohols, and a ratio of component (1) / component (2) is within the range of 90/10-50/50 based on solid weight.

Polyfunctional polycarbonate polyol

A heat sensitive color developing material containing an electron donating color forming organic compound, a heat activating compound, and a color developer. This material exhibits excellent heat sensitivity and enables rapid color development at low cost.

Heat sensitive color developing material

The present invention provides a powder coating composition which is suitable for precoated steel plates. The powder coating composition has excellent storage stability (e.g. blocking resistance) and provides a cured film having good weather resistance and a good balance of hardness and processability. The powder coating composition comprises;

Powder coating composition

A heat sensitive color developing material containing an electron donating color forming organic compound, a heat activating compound, and a color developer. These materials have excellent heat sensitivity in which color can be developed rapidly and can be produced and easily used.

A heat sensitive color developing material containing an electron donating color forming organic compound, a heat activating compound, and a color developer. These materials have excellent heat sensitivity in which color can be developed rapidly and can be easily produced and easily used.

Benzyl pyridinium or ammonium salts of a non-nucleophilic anion are useful as a cationic polymerization initiator having a heat latency. A variety of resinous compositions containing this initiator is also disclosed.

Growing community of inventors

Sakai, Japan

Yasuhiko Nakae