Preparation method for polyol and application of polyol in making polyurethane

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United States of America Patent

PATENT NO 11535708
APP PUB NO 20200377656A1
SERIAL NO

16999932

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Abstract

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A method for preparing a polyol comprises the following steps of: (1) dissolving 2,3 -epoxybutane and an acid catalyst in an inert solvent to obtain a solution A; dissolving triethylene glycol in an inert solvent to obtain a solution B; and dissolving epoxy vegetable oil in an inert solvent to obtain a solution C; (2) respectively and simultaneously pumping the solutions A and B into a first micromixer for mixing; (3) pumping the solution C and an effluent of the first microreactor into a second micromixer for mixing while carrying out step (2); and (4) dissolving the vegetable oil polyol in an inert solvent to obtain a solution D; dissolving epoxypropane and an alkaline catalyst in an inert solvent to obtain a solution E; and pumping the solution D and the solution E into a tank reactor for reaction, thereby obtaining the polyol.

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Patent Owner(s)

Patent OwnerAddress
NANJING TECH UNIVERSITYNO 30 PUZHU SOUTH ROAD NANJING JIANGSU 211800 NANJING CITY JIANGSU PROVINCE 211800

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Kequan Nanjing, CN 4 0
Fang, Zheng Nanjing, CN 239 963
Guo, Kai Nanjing, CN 112 449
He, Wei Nanjing, CN 573 3647
Ouyang, Pingkai Nanjing, CN 25 15
Tao, Junjie Nanjing, CN 7 13
Yang, Man Nanjing, CN 5 4
Zhu, Ning Nanjing, CN 136 1600

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