Title:
PREPARATION METHOD FOR POLYTRIFLUOROSTYRENE
Document Type and Number:
WIPO Patent Application WO/2023/019727
Kind Code:
A1
Abstract:
Disclosed is a preparation method for a polytrifluorostyrene. The method comprises: (i) providing a pre-emulsion of a trifluorostyrene monomer and a non-perfluorinated fluorine-containing anionic surfactant, wherein based on the weight of the trifluorostyrene monomer, the amount of the non-perfluorinated fluorine-containing anionic surfactant in the emulsion is 0.1-5 wt%, the non-perfluorinated fluorine-containing anionic surfactant has the general formula: CF 3(CFX)n-(CH 2)m-(C6H4)o-M, where n is an integer of 1-7, m is an integer of 1-4, and o is an integer of 0-2; X is selected from -F, -CF 3, -OCF 3, and -FCF 2C(CF 3) 2; and M is selected from a carboxyl group, a sulfo group or respective salts thereof; (ii) adding an initiator to initiate a microemulsion polymerization reaction of the trifluorostyrene monomer; and (iii) adding a coagulant for demulsification.
Inventors:
DU LIJUN (CN)
LI CHUNTING (CN)
WU JUNYI (CN)
YUAN LIBING (CN)
LI CHUNTING (CN)
WU JUNYI (CN)
YUAN LIBING (CN)
Application Number:
PCT/CN2021/126267
Publication Date:
February 23, 2023
Filing Date:
October 26, 2021
Export Citation:
Assignee:
CHANGSHU 3F ZHONGHAO NEW CHEMICAL MAT CO LTD (CN)
SHANGHAI HUAYI 3F NEW MAT CO LTD (CN)
CHANGSHU 3F ZHENFU NEW MAT CO LTD (CN)
SHANGHAI HUAYI 3F NEW MAT CO LTD (CN)
CHANGSHU 3F ZHENFU NEW MAT CO LTD (CN)
International Classes:
C08F114/18; C08F2/26
Foreign References:
| CN102264775A | 2011-11-30 | |||
| CN102633688A | 2012-08-15 | |||
| CN107254012A | 2017-10-17 | |||
| CN104245755A | 2014-12-24 |
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE, LLC (CN)
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