Sumitomo Chemical Company, Limited

Katsuo Akagane

Yoshiya Fukuyama

Kunimasa Kamio

Yasuhisa Saito

Teruho Adachi

Akira Shintani

Makoto Nakahara

Kazuo Sumiyoshi

Takashi Urata, Deceased

Takao Miwa

A solid resinous product useful for coatings, adhesives and molding materials which is obtained by polymerizing a by-product tar produced as by-product in manufacturing resorcinol or resorcinol and hydroquinone via hydroperoxide of m-diisopropylbenzene or of a combination of m- and p-diisorpopylbenzenes and containing m-substituted phenolic constituents or a combination of m- and p-substituted phenolic constituents as major constituents.

Solid resin prepared by polymerizing by-product tar formed during

A chlorine-containing resin is prevented from degradation due to heat and light by addition of a novolac type epoxy compound of the formula, ##STR1## wherein R is hydrogen or C.sub.1 - C.sub.4 alkyl, and n is a number of 5 to 15.

Stabilized chlorine-containing resin composition

A low profile unsaturated polyester resin composition comprising (A) a reaction product between (1) a saturated polyester having a molecular weight of 3,000 - 50,000 obtained from a saturated polycarboxylic acid and a polyhydric alcohol and (2) an unsaturated monoglycidyl compounds, (B) an unsaturated polyester, and (C) an unsaturated monomer copolymerizable with the reaction product (A) and the unsaturated polyester (B) which gives a molded articles of improved surface smoothness and dimensional stability without deterioration of strength peculiar to unsaturated polyester resins.

Low profile unsaturated polyester resin composition

Unsaturated epoxy esters with improved curability are prepared by the reaction of (1) a partial esterification compound obtained from trimellitic anhydride and/or pyromellitic anhydride and an unsaturated monoalcohol; (2) (i) a partial esterification compound obtained from a dicarboxylic anhydride and an unsaturated monoalcohol and/or ( ii) a polymerizable unsaturated monobasic acid; and (3) a compound containing at least two epoxy groups in one molecule; if desired in the presence of (4) a dicarboxylic acid or a saturated or unsaturated alkyd having carboxyl groups at both terminals and/or a saturated or unsaturated monoglycidyl compound.

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Ashiya, Japan

Katsuo Akagane