Invention Grant
- Patent Title: Polyolefin microporous membrane, production method therefor, and battery separator
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Application No.: US15539084Application Date: 2015-12-25
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Publication No.: US10686175B2Publication Date: 2020-06-16
- Inventor: Toshihiko Kaneda , Go Sato , Koichi Kono
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: Kilpatrick Townsend & Stockton LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@69e6cf6d
- International Application: PCT/JP2015/086416 WO 20151225
- International Announcement: WO2016/104790 WO 20160630
- Main IPC: H01M4/02
- IPC: H01M4/02 ; H01M2/16 ; C08J9/28 ; H01M2/14 ; C08F10/02 ; H01M10/00
Abstract:
A polyolefin microporous membrane is disclosed. The membrane includes a polyolefin resin having an MFR value of not greater than 2.0 g/10 min, and a crystal nucleating agent. The polyolefin microporous membrane has an air permeation resistance scaled to a thickness of 20 μm of from 100 to 500 sec/100 cc, a porosity of from 20% to 60%, and a mean flow pore size of not greater than 100 nm.
Public/Granted literature
- US20170373291A1 POLYOLEFIN MICROPOROUS MEMBRANE, PRODUCTION METHOD THEREFOR, AND BATTERY SEPARATOR Public/Granted day:2017-12-28
Information query
