Showa Denko K.k.

Showa Denko Kabushiki Kaisha

Mikito Kitayama

Yukio Oda

Hiroshi Uchida

Masato Kaneda

Yasuo Kawai

Kazuyuki Yokoo

Yuji Shibue

Mitsuhiko Morihira

Osamu Morooka

A composition for artificial marble comprising (a) 10 to 60% by weight of an allyl-terminated oligomer, (b) 40 to 86% by weight of an inorganic filler and (c) 0 to 30% by weight of a reactive monomer. The composition provides artificial marble having a deep appearance characteristic of marble and having a high strength and high abrasion resistance.

Artificial marble composition

Aluminum hydroxide, process for preparation thereof and composition

An unsaturated polyester resin composition suitable for an onyx-like artificial marble is obtained by using aluminum hydroxide having an average primary particle size of at least 20 .mu.m or a mixture thereof with aluminum hydroxide pulverized from the above aluminum hydroxide and having an average particle size of at least 15 .mu.m. This composition has an improved transparency, a reduced coloration, and a good productivity.

Unsaturated polyester resin composition having less coloration and

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Yokohama, Japan

Mikito Kitayama