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특허 상세정보

Microporous membrane and method for forming

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B01D-053/22   
미국특허분류(USC) 095/045; 095/043; 095/050; 096/007; 096/011; 096/012
출원번호 US-0129145 (2009-10-22)
등록번호 US-8540801 (2013-09-24)
국제출원번호 PCT/US2009/061572 (2009-10-22)
§371/§102 date 20110513 (20110513)
국제공개번호 WO2010/059327 (2010-05-27)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Baker, James A.
인용정보 피인용 횟수 : 0  인용 특허 : 20
초록

The present disclosure describes a method for forming microporous membranes. More specifically, vapor induced phase separation techniques are used for forming multizone microporous membranes having improved material throughput.

대표
청구항

1. A method for forming a microporous membrane comprising: casting a plurality of dope formulations on a support to provide a multilayer sheet having a first major surface;exposing the multilayer sheet to a first relative humidity level such that water vapor diffuses into the first major surface;exposing the multilayer sheet to a second relative humidity level such that additional water vapor diffuses into the multilayer sheet effecting a phase separation to provide the microporous membrane, wherein the second relative humidity level is greater than the ...

이 특허에 인용된 특허 (20)

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