Title:
OLEOPHOBIC FLUOROPOLYMERS AND FILTER MATERIALS PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2023/272451
Kind Code:
A1
Abstract:
The disclosure provides an improved process for preparing oleophobic fluoropolymers. The resulting fluoropolymers were found to be effective in imparting hydrophobic and oleophobic properties to porous polymeric membranes such as PTFE. The treated PTFE membrane can reach an oleophobic level of 6 or above, (according to the AATCC-118-1997 oil repellency test method) with a low air flux loss.
Inventors:
HE MEI FENG (CN)
WU DONGZHU (CN)
XIA YUNJIA (CN)
CHENG KWOKSHUN (US)
WU DONGZHU (CN)
XIA YUNJIA (CN)
CHENG KWOKSHUN (US)
Application Number:
PCT/CN2021/102859
Publication Date:
January 05, 2023
Filing Date:
June 28, 2021
Export Citation:
Assignee:
ENTEGRIS INC (US)
HE MEI FENG (CN)
WU DONGZHU (CN)
XIA YUNJIA (CN)
CHENG KWOKSHUN (US)
HE MEI FENG (CN)
WU DONGZHU (CN)
XIA YUNJIA (CN)
CHENG KWOKSHUN (US)
International Classes:
C09D133/16; B32B27/04; C08F2/06; C08F218/08; C08F220/10; C08F220/24; C08L27/12; C09D133/04; D06M15/33; D06M15/333
Domestic Patent References:
| WO2014021106A1 | 2014-02-06 |
Foreign References:
| CN104448098A | 2015-03-25 | |||
| JP2001302732A | 2001-10-31 | |||
| CN101797804B | 2015-05-13 | |||
| US20100024651A1 | 2010-02-04 | |||
| CN101638054A | 2010-02-03 | |||
| US20160075915A1 | 2016-03-17 | |||
| CN1072561C | 2001-10-10 | |||
| JP2005082719A | 2005-03-31 | |||
| CN105705536A | 2016-06-22 | |||
| CN111511460A | 2020-08-07 |
Attorney, Agent or Firm:
LEE AND LI - LEAVEN IPR AGENCY LTD. (CN)
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