Title:
CYCLOOLEFIN POLYMER FILM WITH OPTICAL ANISOTROPY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/007505
Kind Code:
A1
Abstract:
The present invention discloses a cycloolefin polymer film with optical anisotropy and a preparation method therefor, and aims to provide a cycloolefin polymer film having optical anisotropy, a stable molecular weight, a relatively narrow molecular weight distribution and a stable heat resistance (Tg), and a preparation method therefor. The method is stable in terms of process, convenient and rapid, can effectively improve the production efficiency of the product, and is beneficial to large-batch industrial production. The technical solution thereof comprises the following successive steps: 1) dissolving a catalyst, a catalyst modifier and a cocatalyst in a solvent in a high-purity nitrogen atmosphere to obtain a stable catalyst solution; 2) adding the catalyst solution prepared in step 1) to a solvent, respectively pumping different cycloolefin monomers at a feeding rate of 1-30 mL/min, and reacting same at 60-70°C for 1.5-2.5 h to obtain a cycloolefin polymer; and 3) adding a hydrogenation catalyst to the cycloolefin polymer in step 2), reacting same in a hydrogen atmosphere at 190-230°C for 5-7 h, and performing precipitating, washing and drying to obtain a saturated cycloolefin polymer. The present invention belongs to the field of new chemical materials.
Inventors:
ZHANG HENGCHEN (CN)
ZHONG YI (CN)
HUANG MINGLI (CN)
LIU YANG (CN)
ZUO HONGLIANG (CN)
YUAN RENXU (CN)
YU MINGQUAN (CN)
ZHONG YI (CN)
HUANG MINGLI (CN)
LIU YANG (CN)
ZUO HONGLIANG (CN)
YUAN RENXU (CN)
YU MINGQUAN (CN)
Application Number:
PCT/CN2022/131835
Publication Date:
January 11, 2024
Filing Date:
November 15, 2022
Export Citation:
Assignee:
GUANGDONG HUAJINDA NEW MATERIAL TECH CO LTD (CN)
International Classes:
C08F232/04; C08F8/04; C08F232/08; C09J5/08
Domestic Patent References:
| WO2020066899A1 | 2020-04-02 |
Foreign References:
| CN115073664A | 2022-09-20 | |||
| CN112194744A | 2021-01-08 | |||
| CN1446240A | 2003-10-01 | |||
| CN106574008A | 2017-04-19 | |||
| CN105348442A | 2016-02-24 | |||
| CN112646126A | 2021-04-13 | |||
| US4138448A | 1979-02-06 |
Attorney, Agent or Firm:
GUANGZHOU KEFENG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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