Process for producing polyether-polyester block copolymer

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United States of America Patent

PATENT NO 8779084
APP PUB NO 20120059185A1
SERIAL NO

13319859

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Abstract

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The present invention discloses a process for producing a polyether-polyester block copolymer with a di(C 1-C 4)alkyl ester of aromatic dicarboxylic acid, an aliphatic diol or aliphatic polyol and a polyether having at least one terminal hydroxyl group in an inert solvent. In the present invention, the inert solvent 5 is used to prevent the di(C 1-C 4)alkyl ester of aromatic dicarboxylic acid from sublimation instead of excessive polyol, such that the subsequent removal of excessive polyol under high temperature and high vacuum is avoided.

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Patent Owner(s)

Patent OwnerAddress
SOLVAY (CHINA) CO LTDXINZHUANG INDUSTRIAL ZONE SHANGHAI 201108

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Qiaobo Shanghai, CN 1 2
Lin, Daobing Shanghai, CN 2 2
Liu, Zhaoquing Shanghai, CN 1 2

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