Method for producing polycarbonate diol, polycarbonate diol and polyurethane using same

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United States of America Patent

PATENT NO 10472465
APP PUB NO 20170073466A1
SERIAL NO

15359071

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Abstract

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The present invention relates to a method for producing a polycarbonate diol, comprising subjecting a compound represented by the following formula (A) containing from 0.01 to 1.0 wt % of an aldehyde derivative, a compound represented by the following formula (B), and a carbonate compound to polycondensation by a transesterification reaction in the presence of a catalyst to produce a polycarbonate diol having a number average molecular weight of 250 to 5,000:

description='In-line Formulae' end='lead'HO—(CH2)10—OH  (A)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'HO—R1—OH  (B)description='In-line Formulae' end='tail'

wherein in the formula (B), R1 represents a substituted or unsubstituted divalent alkylene group having a carbon number of 3 to 20, wherein the compound of the formula (A) is not included by the formula (B).

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Patent Owner(s)

  • MITSUBISHI CHEMICAL CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Izawa, Yusuke Mie, JP 19 46
Kanamori, Yoshikazu Kanagawa, JP 7 19
Kusano, Kazunao Fukuoka, JP 9 61
Nakagawa, Yoko Mie, JP 7 122
Wakabayashi, Kazuki Fukuoka, JP 7 45

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