Nippon Paint Compnay, Ltd.

Daicel Chemical Industries, Ltd.

Diacel Chemical Industries, Ltd.

Takao Morimoto

Shinji Nakano

Takaaki Fujiwa

Hideki Matsui

Shin-ya Yamada

Takeharu Tabuchi

Takeshi Endo

Satoshi Urano

Noriyuki Tsuboniwa

Eiji Yamanaka

Masamichi Furukawa

Disclosed are a carbonate group-modified epoxy resin in which carbonate groups are introduced into an epoxy resin having secondary hydroxyl groups at terminals or lactone-modified epoxy resin having primary hydroxyl groups at terminals by the ring-opening reaction of a cyclic alkylene carbonate, a process for the preparation thereof, and a thermosetting resin composition containing the carbonate group-modified epoxy resin.

Carbonate group-modified epoxy resin, a process for the preparation

A hydroxy-terminated linear carbonate is produced by reacting a cyclic alkylene carbonate such as neopentyl glycol carbonate with a substance having at least one alcoholic hydroxyl group in the presence of a catalyst. Mono- or polyhydric alphatic alcohols, polycaprolactone polyols, hydroxyl group-containing acrylic monomers and polymers, and polyester polyols are modified by the reaction with the cyclic alkylene carbonate to have an enhanced reactivity and resistance to hydrolysis.

Modified acrylic polyyol carbonate polymer

The present invention provides a process for producing a variety of unsaturated carbamic acid derivatives from corresponding unsaturated carbamates by substitution reaction. The present invention provides a process for producing unsaturated carbamic acid derivatives, comprising reacting an unsaturated carbamate represented by ##STR1## wherein R represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R.sup.1 represents a residue of an alcohol from which an OH group is removed, with an alcohol, a primary or secondary amine or an oxime at a temperature of 80.degree. to 150.degree. C. to substitute the --OR.sup.1 group in the formula (A).

Production of unsaturated carbamic acid derivative

For use as a monomer for producing hydroxyl group-containing vinyl polymers, there is provided a compound of the formula: ##STR1## wherein R.sup.1 is acryloyl, methacryloyl or 4-vinylbenzyl; R.sup.2 is an alkyl; and R.sup.3 is an alkyl, alkoxyalkyl, alkenyl, alkynyl, aralkyl or aryl.

Vinyl monomer having linear carbonate and hydroxyl groups

Process for the production of modified acrylic monomers

A curable resin composition utilizing as the crosslinking mechanism thereof an acid catalyzed addition reaction of a cyclic alkylenecarbonate group with an alcoholic hydroxyl group is disclosed. The composition contains a compound or polymer having a plurality of 6-membered cyclic alkylenecarbonate groups and a polymer having a plurality of alcoholic hydroxyl groups. A polymer having pluralities of the cyclic alkylenecarbonate and hydroxyl groups in a single entity may also be used. The composition cures at room or elevated temperatures depending upon the acidity and amount of particular acid catalyst incorporated to the composition.

Curable resin composition

Carbonate modified polyester polyol

Provided is a convenient method for synthesizing quaternary ammonium salts which are useful as curing catalysts for one-part thermosetting resin compositions which maintain storage stability at room temperature. The ammonium salts are synthesized by direct reaction of a benzyl alcohol or a benzyl alkyl ether optionally having on the benzene ring and/or at .alpha.-position one or more substituent groups inert to the intended reaction, with a corresponding strong-acid salt of a tertiary amine.

Method for the synthesis of quaternary ammonium salts

Provided is a convenient method for the synthesis of quaternary ammonium sulfonate compounds which are useful as curing catalysts for one-part thermosetting resin compositions which maintain storage stability at room temperature. The compounds are synthesized by subjecting in one step a benzyl alcohol optionally having on the benzene ring and/or the .alpha.-position one or more substituent groups to reaction with a corresponding tertiary amine and an organic sulfonic acid chloride.

Growing community of inventors

Katano, Japan

Takao Morimoto