Sanyo Chemical Industries, Ltd.

Fujitsu Corporation

Mitsui Toatsu Chemicals, Incorporated

Tatsuroh Yanagi

Kunikiyo Yoshio

Tetsuya Makino

Masakatsu Nakatsuka

Akihiro Mochizuki

Shigeo Kasahara

Masahiro Satoh

Tsuyoshi Tomosada

Tetsuya Watanabe

Yuichi Sasatani

Masashi Watanabe

Yasushi Kumagai

Motonao Kaku

Toru Nakanishi

Hajime Akiyama

Jiro Ryugo

Naoko Sugita

Sadao Kubota

A polyurethane foam which is obtained by reacting an addition-polymerizable active hydrogen component comprising a compound having a group containing active hydrogen and an addition-polymerizable functional group or comprising both this compound and a compound containing at least 2.5 groups (on the average) containing active hydrogen and not containing addition-polymerizable functional groups with an organic polyisocyanate in the presence or absence of at least one auxiliary selected from the group consisting of foaming agents and additives to polymerize the addition-polymerizable functional group and simultaneously form a polyurethane, and which has a structure in which the chains formed by the addition polymerization have been cross-linked to the polyurethane chains. The polyurethane foam is useful as a rigid polyurethane foam excellent in hardness, dimensional stability, etc. and usable as a heat insulator, shock-absorbing material, synthetic wood, etc., or is useful as a soft polyurethane foam reduced in compression set and usable as a cushioning material, shock-absorbing material, sound insulating/absorbing material, etc.

Polyurethane foam, process for producing the same, and foam forming composition

This invention is directed to reduce the viscosity of a naphthalene type mixed liquid crystal and to improve display quality while maintaining a bookshelf layer structure. The ferroelectric liquid crystal composition of the present invention comprises 70 to 97 parts by weight of a naphthalene base mixed liquid crystal and 3 to 30 parts by weight of a predetermined tolan type liquid crystal.

Ferroelectric liquid crystal composition

Growing community of inventors

Kyoto, Japan

Tatsuroh Yanagi