Kao Corporation

Masayoshi Morii

Tetsuaki Fukushima

Shoichiro Harada

Hiroshi Kitagawa

Yasutoshi Isayama

Atsushi Ishikawa

Mitsuru Sakai

Hiroshi Abe

Kohshiro Sotoya

Harumasa Yamasaki

Yukinaga Yokota

Yoshiyuki Nabata

Akira Mamada

Process for producing polyurethane

Process for producing polyurethane foam

A semi-rigid polyurethane foam having a strength retention of not less than 70% when allowing it to stand at 120&deg; C. for 24 hours, and a Haze value of not more than 2 as determined by Fogging test, prepared by mixing a polyol mixture comprising a polyol, water and a catalyst with a polyisocyanate, and foaming the resulting mixture, and a process for preparing the same. The semi-rigid polyurethane foam would not cause fogging under high-temperature conditions, and can be suitably used for interior materials of automobiles such as headrests and armrests.

Semi-rigid polyurethane foam

A tertiary aminoalcohol having a tert-amino group(s) in the main chain and hydroxyl groups at the terminals. The use of this compound for purposes different from that of ordinary amines and amine derivatives is expected. A process for producing the tertiary aminoalcohol wherein a catalyst comprising copper, a transition metal element of the fourth period and a platinum group element of the group VIII, and further optionally containing an alkali metal or an alkaline earth metal is used. A process for producing polyurethane using the above-mentioned tertiary aminoalcohol which can solve the problems occurring in the production of a polyurethane using a tertiary amine which has a strong irritating odor and is highly irritant to the skin as a catalyst, for example, deteriorations of working atmosphere and sales appeal of the polyurethane. The chemical structure of the above-described tertiary aminoalcohol is as follows: ##STR1##

Tertiary aminoalcohol ane process for producing the same, and,

Tertiary aminoalcohol and process for producing the same, and,

Processes for producing a polyurethane, a rigid polyurethane foam, a flexible polyurethane foam and a spray type rigid polyurethane foam are disclosed. In these processes, a specified tertiary aminoalcohol is used as a polyol component and a catalyst.

Polyurethane, process for producing the same, and process for producing

A polyurethane is prepared with use of a catalyst comprising a compound having the formula: ##STR1## in which n is an integer of 2 to 12, A is a hydrogen or a group of --CH.sub.2 CHRCH.sub.2 NH.sub.2 and R is hdyrogen or methyl, provided that n is 6 when A is hydrogen. The compound scarcely smells and does not elute out of the polyurethane article. The process is easy to control.

Catalyst for preparation of polyurethane and process for the preparation

Growing community of inventors

Wakayama, Japan

Masayoshi Morii