Title:
液体フィルター用基材
Document Type and Number:
Japanese Patent JP6858618
Kind Code:
B2
Abstract:
A substrate for a liquid filter contains a polyolefin microporous membrane. A mean flow pore size dPP in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to gas-liquid phase substitution is from 1 nm to 20 nm. A mean flow pore size dLLP in a pore size distribution of the polyolefin microporous membrane measured by a half dry method according to liquid-liquid phase substitution is from 1 nm to 15 nm. A difference (dPP−dLLP) between the mean flow pore size dPP and the mean flow pore size dLLP is 12 nm or less, and a thickness of the polyolefin microporous membrane is from 4 to 25 μm.
Inventors:
Iwai Ayumi
Koji Furuya
Takao Ohno
Koji Furuya
Takao Ohno
Application Number:
JP2017067890A
Publication Date:
April 14, 2021
Filing Date:
March 30, 2017
Export Citation:
Assignee:
Teijin Limited
International Classes:
B01D71/26; B01D69/02; C08J9/28
Domestic Patent References:
| JP5025305A |
Foreign References:
| WO2014181760A1 | ||||
| WO2015198948A1 | ||||
| WO2018168871A1 | ||||
| WO2015194667A1 |
Attorney, Agent or Firm:
Patent Service Corporation Taiyo International Patent Office