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US 8,739,976 B2Granted
Crystalline polymer microporous membrane, method for producing the same, and filteration filter
AssigneeFUJIFILM Corporation
InventorsKenichi Ishizuka, Nobuhiro Nishita
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Abstract
A crystalline polymer microporous membrane containing a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure; fluorine alcohol covering at least part of an exposed surface of the crystalline polymer microporous film; and a crosslinking agent, wherein the fluorine alcohol is crosslinked with assistance of the crosslinking agent.
Claims18
A crystalline polymer microporous membrane comprising:
- a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure;
- fluorine alcohol covering at least part of an exposed surface of the crystalline polymer microporous film;
- a crosslinking agent, wherein the fluorine alcohol is crosslinked with assistance of the crosslinking agent;
- and
- a functional compound, which is attached to part of at least one of the crosslinking agent and the fluorine alcohol by addition reaction,
- wherein the crosslinking agent and the functional compound are parts of the crystalline polymer microporous membrane.
3 more elements
A method for producing a crystalline polymer microporous membrane, comprising:
- applying at least fluorine alcohol and a crosslinking agent to at least part of an exposed surface of a crystalline polymer microporous film;
- crosslinking the fluorine alcohol with assistance of the crosslinking agent, wherein the crystalline polymer microporous film has an asymmetric pore structure;
- and
- allowing a functional compound to initiate an addition reaction with part of at least one of the crosslinking agent and the fluorine alcohol such that the functional compound and the crosslinking agent are parts of the crystalline polymer microporous membrane.
1 more element
A filtration filter, comprising:
- a crystalline polymer microporous membrane, which comprises:
- a crystalline polymer microporous film containing a crystalline polymer, and having an asymmetric pore structure;
- fluorine alcohol covering at least part of an exposed surface of the crystalline polymer microporous film;
- a crosslinking agent, wherein the fluorine alcohol is crosslinked with assistance of the crosslinking agent;
- and
- a functional compound, which is attached to part of at least one of the crosslinking agent and the fluorine alcohol by addition reaction,
- wherein the crosslinking agent and the functional compound are parts of the crystalline polymer microporous membrane.
4 more elements
Dependencies are inferred from the claim text.