Ube Industries, Inc.

Yukio Kaneko

Hideki Ichihashi

Hiroaki Yamaguchi

Mikito Kashima

Toshikazu Machida

Harutoshi Hoshino

Masafumi Kohda

Fumio Adachi

Yumiki Noda

Disclosed is a polyimide foam made of an aromatic polyimide composed of a tetracarboxylic acid component, which is composed of 0 to 90% by mole of a 3,3',4,4&#x2032;-biphenyltetracarboxylic acid component and 100 to 10% by mole of a 3,3&#x2032;,4,4&#x2032;-benzophenone tetracarboxylic acid component and/or a 2,3,3&#x2032;,4&#x2032;-biphenyltetracarboxylic acid component, and a diamine component, which is composed of 50 to 97% by mole of m-phenylenediamine and 50 to 3% by mole of 4,4&#x2032;-methylenedianiline. The polyimide foam can be produced easily, has uniform and fine cells, and has the mechanical properties required for practical use as a foam, such as flexibility that prevents the foam from cracking easily even when deformed and excellent cushioning properties, as well as heat resistance that can resist use at high temperatures.

Polyimide foam and method for producing same

A compatibilizing agent is described for a mixture of (1) a polyester polyol containing units derived from (2) a polyester polyol containing units derived from

Compatibilizing agent, polyester polyol mixture containing the same, and hot-melt adhesive obtained from the mixture

A crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol, and a hot-melt adhesive comprising a reaction product of a polyisocyanate and a polyesterpolyol, which contains a crystalline polyesterpolyol having a number average molecular weight of 1,500 to 15,000 and obtainable from a polybasic carboxylic acid component and an aliphatic hydrocarbon diol component comprising 1,10-decanediol and/or 1,12-dodecanediol are provided.

Crystalline polyesterpolyol and hot-melt adhesive

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Yamaguchi, Japan

Yukio Kaneko