Kuraray Co., Ltd.

Kyowa Gas Chemical Industry Company, Ltd.

Yutaka Omura

Takashi Nishida

Kazuo Itoi

Yoichi Ninagawa

Kazundo Akamata

Haruo Nagai

A highly flexible leather-like sheet material has a base layer of a fibrous aggregate containing a first polymer principally containing a first elastic polymer and, provided on the surface thereof, a coating layer of a second polymer principally comprising a second elastic polymer, said coating layer containing the two layers of a wet-formed porous intermediate coating layer integrated with the base layer and having a thickness of 10 to 40 .mu.m and having continuous pores with a maximum pore diameter of 1 to 30 .mu.m and a dry-formed porous surface coating layer having a thickness of 20 to 80 .mu.m and having continuous pores with a maximum pore diameter of substantially not more than 20 .mu.m and an average pore diameter of, preferably, 1 to 5 .mu.m obtained by extracting off fine particles, the two layers both containing a softening agent.

Highly flexible leather-like sheet material and process for producing

Novel 2,6,10,15,19,23-hexamethyltetracosane-10,15-diol derivatives. Such derivatives are prepared by hydrogenation of 2,6,10,15,19,23-hexamethyltetracosa-11,13-diyne-10,15-diol derivatives and used as starting materials for preparing squalane.

Preparation of squalane by hydrogenolysis

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Niigata, Japan

Yutaka Omura