Fluorinated electret
Assignee3M Innovative Properties Company
InventorsMarvin E. Jones, Christopher S. Lyons, David B. Redmond, Jeffrey L. Solomon, Seyed Abolhassan Angadjivand
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Abstract
An electret is described that includes a surface modified polymeric article having surface fluorination produced by fluorinating the polymeric article.
Claims28
An electret comprising a nonwoven polymeric article comprising at least about 45 atomic % fluorine as detected by ESCA and a CF3:CF2 ratio of at least about 0.45 as determined according to the Method of Determining CF3:CF2, said article having a Quality Factor of at least about 0.25/mmH2O.
An electret comprising a nonwoven polymeric article comprising at least about 50 atomic % fluorine as detected by ESCA and a CF3:CF2 ratio of at least about 0.25 as determined according to the method for determining CF3:CF2, said article having a Quality Factor of at least about 0.25/mmH2O.
An electret that comprises:
- a nonwoven web that comprises polymeric microfibers, the nonwoven web having surface fluorination that comprises CF3 and CF2 at a CF3:CF2 ratio of at least 0.45 as determined according to the Method for Determining CF3:CF2, said nonwoven web having a Quality Factor of at least about 0.25/mmH2O.
Dependencies are inferred from the claim text.