POLYCARBONATE DIOL, POLYCARBONATE DIOL–CONTAINING COMPOSITION, POLYCARBONATE DIOL PRODUCTION METHOD, AND POLYURETHANE

WIPO Patent Application WO/2018/088575

A1

Provided is a polycarbonate polyol which serves as the starting material for a polyurethane that has superior flexibility and solvent resistance and that has excellent storage stability as a polyurethane solution. Specifically provided is a polycarbonate diol containing a structural unit represented by formula (A) and a structural unit represented by formula (B) (R1 and R2 each independently represent a C1–4 alkyl group, and may have an oxygen atom, a sulfur atom, a nitrogen atom, or a halogen atom, or a substituent group including these atoms, in the aforementioned carbon number range. Additionally, R3 represents a C3 or C4 straight-chain aliphatic hydrocarbon.), the molecular weight of the polycarbonate diol being 500–5000, and the value of formula (I) being 0.3 to 20.0 inclusive.　Formula (I): (content ratio of branched-chain sites in polymer)/(content ratio of carbonate groups in polymer)×100(%)

KANAMORI YOSHIKAZU (JP)
HIOKI YUTA (JP)

PCT/JP2018/000300

May 17, 2018

January 10, 2018

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MITSUBISHI CHEM CORP (JP)

C08G64/02; C08G18/44; C08K5/13; C08L69/00

WO2006088152A1	2006-08-24
WO2011074617A1	2011-06-23

JP2011190392A	2011-09-29
JP2011190390A	2011-09-29
JP2011162646A	2011-08-25
JP2011162908A	2011-08-25
JP2011162643A	2011-08-25
JP2010241990A	2010-10-28
JP2012077280A	2012-04-19
JP2016027073A	2016-02-18
JP2015143316A	2015-08-06
JP2005206674A	2005-08-04
JPH0551428A	1993-03-02
JPH02289616A	1990-11-29
JP2010241990A	2010-10-28
JP2009149810A	2009-07-09

See also references of EP 3569635A4

KAWAGUCHI, Yoshiyuki et al. (JP)

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