B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 39/08 (2006.01) A62B 23/00 (2006.01) A62B 23/02 (2006.01) B01D 39/16 (2006.01) B03C 3/28 (2006.01) D01F 1/10 (2006.01) D01F 6/06 (2006.01) D01F 8/06 (2006.01) D04H 1/42 (2006.01) D04H 1/56 (2006.01) H01G 7/02 (2006.01)
Patent
CA 2303004
Novel electret articles containing a polymer and a performance-enhancing additive can be identified by their thermally stimulated conductivity characteristics or their filtration properties. Electret articles such as nonwoven filter webs and respirators exhibits superior oily mist loading performance, low penetration and a small pressure drop. The electret articles are preferably produced by melt-blowing a blend of a polymer and a fluorochemical additive selected from the group consisting of formulae (I), (II) and (III).
Il est possible d'identifier ces nouveaux articles en électret qui contiennent un polymère et un produit d'addition améliorant leurs caractéristiques de fonctionnement par leur conductibilité stimulée par la chaleur et leurs propriétés filtrantes. Ces articles en électret, notamment des bandes filtre non tissées et des respirateurs, font montre d'une capacité supérieure d'emmagasinage de brouillard huileux, d'une basse pénétration et d'une faible diminution de pression. On produit ces articles en électret par fusion-soufflage, de préférence, d'un mélange constitué d'un polymère et d'un produit d'addition à base de composé fluoré issu du groupe constitué par les formules (I), (II) et (III).
Jones Marvin E.
Mei Betty Z.
Rousseau Alan D.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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