Title:
METHOD FOR PREPARING BRANCHED POLYHYDROXYETHYL METHACRYLATE BY INVERSE EMULSION POLYMERIZATION AT ROOM TEMPERATURE
Document Type and Number:
WIPO Patent Application WO/2021/196776
Kind Code:
A1
Abstract:
The present invention belongs to the field of polymer synthesis, and a method for preparing branched polyhydroxyethyl methacrylate by inverse emulsion polymerization at room temperature is disclosed. A branched hydroxyethyl methacrylate is obtained by using dibenzoyl peroxide as an oxidizing agent and 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide as a reducing agent monomer to form a redox initiation system, using water and toluene as a media, using a non-ionic surfactant as an emulsifier, using hydroxyethyl methacrylate as a monomer, and performing a polymerization reaction at room temperature under atmospheric pressure. The polymerization system of the present invention is simple and stable, the synthesis and purification of the reducing agent monomer are simple, and the polymerization costs are greatly reduced. The reaction does not require controlled temperature and increased pressure, the energy consumption is low, the operation is easy, and the influence on the environment is relatively small. The branched polyhydroxyethyl methacrylate obtained has a high molecular weight, and the molecular weight and the degree of branching can be adjusted and controlled in a wide range. The method is of great significance to the theoretical research and large-scale application of branched polyhydroxyethyl methacrylates.
Inventors:
HUANG WENYAN (CN)
ZHU DI (CN)
JIANG BIBIAO (CN)
XUE XIAOQIANG (CN)
YANG HONGJUN (CN)
JIANG LI (CN)
JIANG QIMIN (CN)
ZHU DI (CN)
JIANG BIBIAO (CN)
XUE XIAOQIANG (CN)
YANG HONGJUN (CN)
JIANG LI (CN)
JIANG QIMIN (CN)
Application Number:
PCT/CN2020/140466
Publication Date:
October 07, 2021
Filing Date:
December 29, 2020
Export Citation:
Assignee:
UNIV CHANGZHOU (CN)
International Classes:
C07C231/02; C08F220/20; C07C233/38; C08F2/30; C08F4/40; C08F220/60
Foreign References:
| CN111363083A | 2020-07-03 | |||
| CN102911310A | 2013-02-06 | |||
| CN106699959A | 2017-05-24 | |||
| DE19524868C2 | 2000-05-31 |
Other References:
JIANG QIMIN, DU YONGZHUANG, HUANG WENYAN, CHEN JIANHAI, YANG HONGJUN, XUE XIAOQIANG, JIANG LI, JIANG BIBIAO: "Radical polymerization in the presence of peroxide and reducing agent monomer for branched polymers", JOURNAL OF POLYMER SCIENCE PART A: POLYMER CHEMISTRY, JOHN WILEY & SONS, INC., US, vol. 57, no. 7, 1 April 2019 (2019-04-01), US, pages 833 - 840, XP055854428, ISSN: 0887-624X, DOI: 10.1002/pola.29334
Attorney, Agent or Firm:
CHANGZHOU INNOVATION PATENT AGENCY (CN)
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