Mitsubishi Gas Chemical Company, Inc.

Fuji Photo Film Company, Limited

Naomitsu Takashina

Yoshinori Iwamoto

Masahiro Shimoi

Keiun Ko

Yasuo Tamai

Masato Satomura

Sadao Osawa

Satoru Honjo

Senzo Shimizu

Chiaki Osada

Toshiaki Nishimura

Masuya Ikegami

Shigeru Shiokawa

Rokuro Fujita

Ching Yun Huang

Wakio Nagashima

An ambient temperature curing, two-package type coating composition consists essentially of a solution of (1) components reactive with each other to form a film upon curing at ambient temperature and (2) a solvent; said film-forming components (1) being (a) copolymer having pendant epoxy groups prepared by copolymerization of 2 to 60% by weight, on the basis of total monomer, of glycidyl acrylate or methacrylate or allylglycidyl ether with at least one other polymerizable monomer, and (b) 0.1 to 3.0 equivalents of at least one of acid phosphate esters or acid phosphite esters, and said solvent (2) being (c) at least 5% by weight, on the basis of the solvent (2), of an alcoholic solvent, and (d) at least one other organic solvent. The coating composition has a good pot life when mixed into an ultimate single mixture, and the resulting coating film has a good resistance to water.

Coating composition

This invention relates to a one-package system cold-setting type coating composition which comprises an acrylic copolymer having carboxyl groups in its molecule or an alkyd resin, an aluminum alkoxide complex, a keto-enol tautomeric compound, a solvent and at least one alkali metal hydroxide.

One package system cold-setting type coating compositions

An ambient temperature curing coating composition having a good resistance to solvent and a good corrosion resistance is provided, and said composition comprises copolymers having pendant epoxy groups prepared by copolymerization of glycidyl acrylate or methacrylate or allyl glycidyl ether with at least one of other polymerizable monomers, 0.1 to 2 moles of phosphoric acid per one equivalent of the epoxy groups of the copolymers, and an organic solvent containing at least 5% by weight of an alcoholic solvent.

This invention relates to a one package system cold-setting type coating composition which comprises an acrylic copolymer having carboxyl groups in its molecule or an alkyd resin, an aluminum alkoxide complex and a keto-enol tautomeric compound, characterized by adding a specific nitrogen compound to the composition for preventing discoloration of a coated substance.

One package system cold-setting coating compositions

A resin composition curable in air comprising (A) an unsaturated oligomer having a number average molecular weight of 500 to 4,000 and containing at least two acryloyl and/or methacryloyl groups at the ends of the molecule and at least one ethylenic internal double bond in the oligomer chain and (B) an oligomer having a number average molecular weight of 500 to 4,000 which contains at least two acryloyl and/or methacryloyl groups at the ends of the molecule and at least one pendant allyloxy groups in the oligomer chain with an allyloxy equivalent of not more than 500, and is free from an ethylenic internal double bond in the oligomer chain. The composition is especially useful as a solventless coating agent.

In-air curable resin compositions

Novel liquid developers contain in a carrier liquid a toner produced by graft-copolymerization of an addition-polymerizable monomer represented by the formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group and R.sub.2 represents an alkyl group having 6 to 20 carbon atoms, an addition-polymerizable monomer having an alkoxysilane group or a phenoxysilane group, and carbon black. The carrier liquid has a high electric resistance and a low dielectric constant.

Liquid developer for electrophotography

An aqueous dispersion of a polymer having a cationic charge on the surface of the polymer particles is used for treatment of fouled water. Said aqueous dispersion contains quaternary ammonium salt or inorganic or organic acid salt of a copolymer obtained by emulsion polymerization of, in the presence of a cationic surfactant, (a) 0.1 - 8.0% by weight based on total monomers of at least one .alpha.,.beta.-ethylenically unsaturated monomers containing basic nitrogen or at least one .alpha.,.beta.-ethylenically unsaturated monomers containing halogen and other (b) .alpha.,.beta.-ethylenically unsaturated monomers and/or (c) conjugate diene monomers, (b) and (c) being copolymerizable with said monomer (a). Said aqueous cationic dispersion is especially effective for treatment of fouled water containing anionic latexes.

Growing community of inventors

Fujisawa, Japan

Naomitsu Takashina