Ube Industries, Inc.

Takayoshi Kaneko

Hideho Tanaka

Kohichi Kashiwagi

Masaru Kunimura

Koji Abe

Keigo Nishihira

Shuji Tanaka

Tokuo Matsuzaki

Yuki Nishida

Tetsuro Kawashita

Kunioki Kodama

A thermoplastic polyurethane useful for elastomers, elastic fibers and artificial leathers contains a polyaddition product of a diisocyanate and a chain extender with a liquid polyethercarbonate diol which is a reaction product of a carbonate compound with a polyether diol having structural units (a) (&#x2014;(CH)&#x2014;O&#x2014;) and at least one member of structural units (b) (&#x2014;(CH)&#x2014;O) and (c) (&#x2014;CHCH(CH)&#x2014;O&#x2014;), and in which the units (b) are present in an average number (n) of moles of 0 to 5 per mole of the units (a), the units (c) are present in an average number (m) of moles of 0 to 5 per mole of the units (a), and the total average number (n+m) of moles of the units (b) and (c) is more than 1 but not more than 5, per mole of the units (a).

Thermoplastic polyurethane

Disclosed is a process for preparing carbonic diester comprising the formation of carbonic diester by the vapor phase catalytic reaction of an alkyl nitrite and carbon monoxide in the presence of a solid catalyst, wherein platinum group metal ion in the solid catalyst is exchanged on an ion exchange zeolite carrier.

Process for preparing carbonic diester

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Ube, Japan

Takayoshi Kaneko