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특허 상세정보

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Porous membrane having hydrophilic surface and process

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B32B-003/26   
미국특허분류(USC) 428/3157 ; 521/27 ; 427/245 ; 427/3935
출원번호 US-0676681 (1984-11-30)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 143  인용 특허 : 3
초록

A composite porous membrane is formed from a porous polymeric membrane having desired bulk properties on which is directly coated a cross-linked polymer having desired surface properties. The composites membrane retains the porosity of the porous polymeric membrane. A preferred composite porous membrane is formed from a porous polyvinylidene fluoride to which is directly coated with a polymer formed of a cross-linked hydroxyalkyl acrylate.

대표
청구항

A composite porous thermoplastic membrane which comprises a porous membrane substrate having an average pore size between about 0.001 and 10 microns formed of a first polymer, said substrate being directly coated on its entire surface with a cross-linked second polymer formed from a monomer polymerized in situ with a free radical initiator and cross-linked in situ on said substrate, said composite porous membrane having essentially the same porous configuration as said porous membrane substrate.

이 특허에 인용된 특허 (3)

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  3. Imai Satoshi (Kobe JA) Eguchi Tamiyuki (Kobe JA) Shimokawa Masaaki (Kobe JA). Ion-exchange group bearing composite membranes. USP1976033945927.

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