Kao Corporation

Hiroshi Kitagawa

Tetsuaki Fukushima

Masayoshi Morii

Shoichiro Harada

Yasutoshi Isayama

Hiroshi Abe

Kohshiro Sotoya

Makoto Okubo

Minoru Sawai

Atsushi Ishikawa

A process for preparing a polyurethane foam, comprising reacting a polyol having a number-average molecular weight of not less than 1000 and less than 2500 with a polyisocyante compound in the presence of a catalyst and a blowing agent in a mold, to give a molded article having a density of 0.4 to 0.8 g/cm , and heating the resulting molded article to a temperature of 60&deg; to 100&deg; C. The polyurethane foam is used as a cushioning material such as shoe soles of sports shoes.

Polyurethane foam

Microcellular polyurethane elastomer shoe sole components having exceptional physical properties may be prepared from isocyanate-terminated prepolymers derived from polyoxypropylene diols having a molecular weight of from about 2000 Da to 8000 Da, an unsaturation less than about 0.02 meq/g, and a random oxyethylene content of from about 5 to about 15 weight percent. The shoe sole components exhibit high tensile strength, elongation, resilience, and in addition have excellent tear strength, particularly 90&deg; angle tear.

Polyurethane foam for shoe soles

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

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Wakayama, Japan

Hiroshi Kitagawa