Nhk Spring Co., Ltd.

Asahi Glass Company, Limited

Kunio Asobe

Takayuki Sasaki

Takashi Ito

Yoshinori Toyota

Akio Horie

Takeshi Minegishi

Shigeki Ichimura

Hiroyuki Orito

Takaharu Matsuo

Toshiharu Sato

Kunikazu Takiwaki

Kiyoshi Ota

Satoru Hashimoto

Hitoshi Komatsu

Taiki Futamura

Kiyotugu Takabatake

Provided is a foamed urethane containing a cushion material, the foamed urethane containing a hard segment and a soft segment, in which the foamed urethane is a reaction cured product formed using an isocyanate component of an MDI compound. In a first aspect, a spin-spin relaxation time (T2) of the hard segment in the foamed urethane is from 20 &#x3bc;sec to 40 &#x3bc;sec, and a volume abundance ratio of the hard segment is from 5% to 40%. In a second aspect, a foamed urethane includes: a first region in which T2 of the hard segment is from 30 &#x3bc;sec to 40 &#x3bc;sec, and a volume abundance ratio of the hard segment is from 10% to 40%, and a second region in which T2 of the hard segment is from 20 &#x3bc;sec to less than 30 &#x3bc;sec, and a volume abundance ratio of the hard segment is from 5% to 40% in a Hsolid-state pulse NMR measurement, and which is adjacent to the first region.

Cushion material, seat cushion material, and seat

A novel flexible polyurethane foam having good vibration characteristics and being excellent in occupant posture stability, is provided. A flexible polyurethane foam obtainable by reacting a high molecular weight polyoxyalkylene polyol or a polymer-dispersed polyol containing fine polymer particles in the high molecular weight polyoxyalkylene polyol, with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, characterized in that as at least a part of the foam stabilizer, the following fluorinated compound (F) is used in an amount of from 0.00001 to 1 part by mass per 100 parts by mass of all active hydrogen compounds:

Flexible polyurethane foam, process for its production, and seat for automobile employing it

A cushion is obtained by impregnating an aqueous polyurethane polymer emulsion in three-dimensionally interwined fibers, removing an excessive aqueous polyurethane polymer emulsion and hardening the resultant material with heat. The surface of each fiber is covered with a polyurethane resin, and the fibers are bonded by the polyurethane resin at intersected portions of the fibers.

Cushion material and method of manufacturing the same

Growing community of inventors

Yokohama, Japan

Kunio Asobe