Title:
HIGH-TEMPERATURE-RESISTANT PERFLUOROETHER FLUORORUBBER AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/078040
Kind Code:
A1
Abstract:
The present invention provides a high-temperature-resistant perfluoroether fluororubber and a preparation method therefor. The perfluoroether fluororubber is in chain segments A-B distribution, wherein chain segment A is formed by polymerizing tetrafluoroethylene and perfluoroalkyl vinyl ether in a first molar ratio of (75-85):(15-25), chain segment B is formed by polymerizing tetrafluoroethylene and perfluoroalkyl vinyl ether in a second molar ratio of (45-60):(40-55), and chain segment B accounts for 35-45% of the total molar weight of chain segment A and chain segment B. The perfluoroether fluororubber of the present invention can withstand a high temperature of 300℃, has low hardness and pressure change, and has good medium resistance and processability.
More Like This:
Inventors:
LIU BO (CN)
YU JINLONG (CN)
XIAO ZHONGLIANG (CN)
ZHANG TINGJIAN (CN)
ZHONG ZIQIANG (CN)
LIN ZHOUJUN (CN)
YU JINLONG (CN)
XIAO ZHONGLIANG (CN)
ZHANG TINGJIAN (CN)
ZHONG ZIQIANG (CN)
LIN ZHOUJUN (CN)
Application Number:
PCT/CN2022/124635
Publication Date:
May 11, 2023
Filing Date:
October 11, 2022
Export Citation:
Assignee:
ZHONGHAO CHENGUANG RES INSTITUTE OF CHEMICAL INDUSTRY CO LTD (CN)
International Classes:
C08F214/26; C08F2/00; C08F216/14; C08F293/00
Foreign References:
| CN102977250A | 2013-03-20 | |||
| CN107868163A | 2018-04-03 | |||
| JP2004175916A | 2004-06-24 | |||
| CN104530292A | 2015-04-22 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
Download PDF: