Nissan Chemical Industries Limited

Atsumi Aoki

Motohiko Hidaka

Hisao Ikeda

Yasuhiro Gunji

Toshinari Koda

Noriaki Kohtoh

Masayoshi Shirakawa

Masuo Shindoh

Optically active &bgr;-type tris-(2,3-epoxypropyl)-isocyanurate is obtained by a method of reacting isocyanuric acid with an optically active epihalohydrin, or a method of optically resolving a racemic modification of tris-(2,3-epoxypropyl)-isocyanurate by using an amylose or cellulose derivative. It is a method for producing a high melting point type tris-(2,3-epoxypropyl)-isocyanurate obtained by mixing two enantiomers of optically active &bgr;-type tris-(2,3-epoxypropyl)-isocyanurate.

Optically active epoxy compound

.beta.-form tris-(2,3-epoxypropyl)-isocyanurate crystals containing from 2 to 15 wt % of .alpha.-form tris-(2,3-epoxypropyl)-isocyanurate in the interior of the crystals.

.beta.-form tris-(2, 3-epoxypropyl)-isocyanurate crystals and process

A method for reducing an organic solvent remaining in tris-(2,3-epoxypropyl)-isocyanurate crystals, which comprises pulverizing crystal particles of tris-(2,3-epoxypropyl)-isocyanurate while evaporating a volatile component from the surface of the particles.

Method for reducing an organic solvent remaining in

A flame retardant thermoplastic resin composition which comprises 100 parts by weight of a thermoplastic resin, from 1 to 30 parts by weight of (A) at least one of polyhydric alcohol-boric acid metal complexes, from 15 to 30 parts by weight of (B) at least one of ammonium polyphosphate and melamine-modified ammonium polyphosphate, and from 3 to 30 parts by weight of (C) at least one of melamine and melamine derivatives.

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Yamaguchi, Japan

Atsumi Aoki