METHOD FOR PRODUCING POLYCARBONATE DIOL, POLYCARBONATE DIOL AND POLYURETHANE USING SAME

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...

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Bibliographic Details
Main Authors IZAWA Yusuke, KANAMORI Yoshikazu, KUSANO Kazunao, NAKAGAWA Yoko, WAKABAYASHI Kazuki
Format Patent
LanguageEnglish
French
German
Published 16.08.2017
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary: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 measured as indicated in the description, wherein the amount of the catalyst remaining in the polycarbonate diol is 100 ppm by weight or less as the content in terms of catalyst metal: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ HO-(CH 2 ) 10 -OH€ƒ€ƒ€ƒ€ƒ€ƒ(A) €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ HO-R 1 -OH€ƒ€ƒ€ƒ€ƒ€ƒ(B) (wherein in the formula (B), R 1 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)).
Bibliography:Application Number: EP20150811986