Toyo Ink Manufacturing Company

Nippon Oil Company

Kazuyoshi Ihida

Shozo Tsuchiya

Makoto Sasaki

Hideo Hayashi

Kiyoshi Goto

A process for the production of a final curable resin comprising the steps of reacting a cyclopentadiene type compound with a compound having a double bond and hydroxyl group in the molecule to obtain a hydroxyl group-containing resin, reacting the thus obtained resinous polyol and at least one other polyol with a polybasic acid to obtain a hydroxyl group-containing alkyd resin and then esterifying the alkyd resin with an .alpha.,.beta.-unsaturated carboxylic acid thereby obtain the final curable resin. In one embodiment, this invention relates to said final curable resins and also to curable coating compositions containing same.

Process for producing curable esterified alkyd resins

A process for preparing a curable coating resin comprising the steps of hydrogenating selectively the double bonds of a resin produced from a five-membered cyclic compound such as dicyclopentadiene and an unsaturated hydroxyl group-containing compound such as allyl alcohol and then esterifying the thus hydrogenated hydroxyl group-containing resin with acrylic and/or methacrylic acid thereby to obtain a curable coating resin; and a curable coating resin obtained by said process.

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Tokyo, Japan

Kazuyoshi Ihida