Temperature-responsive poly(2-hydroxyethyl methacrylate) (PHEMA) and preparation method thereof

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United States of America Patent

PATENT NO 11377508
APP PUB NO 20220041770A1
SERIAL NO

17414969

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Temperature-responsive poly(2-hydroxyethyl methacrylate) (PHEMA) and a preparation method thereof are disclosed. In the preparation method, with a system consisting of benzoyl peroxide (BPO) (an oxidant) and 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide (MPAEMA) or 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-propionamide (MEMA) (a reducing agent monomer) as a redox initiation system, water and toluene as media, a nonionic surfactant as an emulsifier, and 2-hydroxyethyl methacrylate (HEMA) as a polymerization monomer, polymerization is conducted at room temperature and atmospheric pressure to obtain the PHEMA. An alcohol solution of the PHEMA has an upper critical solution temperature (UCST). The method has the advantages of simple and stable polymerization system, low polymerization cost, easy operation, mild conditions, small impact on the environment, and low energy consumption. Moreover, a molecular weight and UCST of a product are controllable within a specified range.

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Patent OwnerAddress
CHANGZHOU UNIVERSITYNO 21 GEHU MIDDLE ROAD WUJIN DISTRICT CHANGZHOU

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Huang, Wenyan Changzhou, CN 13 2
Jiang, Bibiao Changzhou, CN 11 2
Jiang, Li Changzhou, CN 336 4128
Jiang, Qimin Changzhou, CN 10 1
Xue, Xiaoqiang Changzhou, CN 11 2
Yang, Hongjun Changzhou, CN 29 167
Zhu, Di Changzhou, CN 63 180

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