B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 39/10 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) B05D 3/10 (2006.01) D01F 6/74 (2006.01) D04H 1/46 (2006.01) D06M 11/74 (2006.01) D06M 11/83 (2006.01) D06M 15/227 (2006.01) D06M 15/233 (2006.01) D06M 15/256 (2006.01) D06M 15/353 (2006.01) D06M 23/08 (2006.01) D06M 23/10 (2006.01) D06N 3/00 (2006.01) D06N 3/04 (2006.01)
Patent
CA 2145252
A water vapor resistant filter comprising a permeable molded material, nonwoven fabric or felt comprising polyimide fiber having a repeating unit represented by formula (I) is described. The permeable molded material, nonwoven fabric or felt is covered with a condensed polycyclic polynucleus aromatic resin, a melting fluorine resin, a solvent-soluble cold setting fluorine resin or a fluorine elastomer: (see formula I) X, R and n are defined in the specification. A water vapor resistant antistatic filter is also described, which comprises a permeable molded material, nonwoven fabric or felt comprising polyimide fiber having a repeating unit represented by the above-described formula (I). The permeable molded material, nonwoven fabric or felt is covered with an electroconductive material and a condensed polycyclic polynucleus aromatic resin, a solvent-soluble cold setting fluorine resin or a fluorine elastomer. Processes for producing these filters are also described.
Hazeyama Takeshi
Otaka Hitoshi
Taniguchi Seihou
Nittetsu Mining Co. Ltd.
Riches Mckenzie & Herbert Llp
LandOfFree
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