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US20070222119 ELECTRET ARTICLE HAVING HETEROATOMS AND LOW FLUOROSATURATION RATIO  
An electret article that includes a polymeric material that has electric charge imparted thereto, that has one or more heteroatoms, that has a fluorosaturation ratio of less than 200, and that has...
US20100156002 High-throughput asymmetric membrane  
A microporous asymmetrical membrane formed of one or more layers wherein the “tight” side of the membrane has an “opened” face or otherwise highly-porous reticulated surface is described. The...
US20140009039 POLYMER LAYER COMPOSITE WITH FERROELECTRET PROPERTIES AND METHOD FOR PRODUCING SAID COMPOSITE  
The present invention relates to a polymer layer structure with ferroelectret properties, comprising a continuous first polymer layer (1) and a continuous second polymer layer (2), the first and...
US20110057358 METHOD OF PRODUCTION OF SOLID AND POROUS FILMS FROM PARTICULATE MATERIALS BY HIGH HEAT FLUX SOURCE  
A method for producing a solid and/or porous film Includes preparing a suspension of solid particles in a solvent and spreading the suspension as a uniform layer of powder particles on a high...
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