Showa Denko K.k.

Seiichiro Sakimoto

Haruo Yoshida

Kazuo Fujita

Yutaka Yamauchi

Hiroshi Matsue

Yoshiaki Yoshioka

Coated particulate materials comprise water-soluble particulate materials as cores and a coating deposited on the surface of the particulate materials and formed preponderantly of a copolymer of cyclopentadiene type oligomer and an unsaturated fatty acid oil. Said coated particulate materials are manufactured by coating the surface of water-soluble particulate materials with a copolymer composition of a cyclopentadiene type oligomer and an unsaturated fatty acid oil and subsequently curing the resultant coating.

Coated particulate materials and method for manufacture thereof

An aqueous emulsion of a multi-component synthetic resin capable of forming a film having superior properties is obtained by emulsion-polymerizing ethylene and styrene in a first step, and emulsion-polymerizing ethylene and a vinyl ester in a second step in the presence of the aqueous emulsion obtained in the first step.

Aqueous emulsion of multi-component synethetic resin and process for

A process for preparing a polymerizable (meth) acrylate oligomer which comprises reacting an epoxide with a carboxylic acid (or anhydride thereof), at least one of said epoxide and carboxylic acid compounds containing an unsaturated alicyclic dicarboxyl group and the other containing an acryloyl group, in the presence of a metal nitrite or N-nitroso-hydroxylamine derivative. The polymerizable (meth) acrylate oligomer containing an acryloyl and an unsaturated alicyclic dicarboxyl group in the molecule is employed in coatings, adhesives, castings and the like.

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Chigasaki, Japan

Seiichiro Sakimoto