3m Innovative Properties Company

Gerald R Spartz

Marvin E Jones

Seth M Kirk

Steven John Pachuta

Alan D Rousseau

John S Huberty

Hyacinth L Cabibil

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 an atomic percent fluorine of greater than about 40%. The inventive electret article is resistant to charge degradation upon exposure to high temperatures for prolonged time periods.

Electret article having heteroatoms and low fluorosaturation ratio

An electret article that includes a polymeric material that has electric charge imparted thereto, that has a CF:CFratio of at least 0.15 and that has a fluorosaturation ratio greater than about 200. The electret article may be in the form of a porous web of polymeric fibers suitable for use as a filter. The inventive electret article is resistant to charge degradation upon exposure to high temperatures for prolonged time periods.

Electret article having high fluorosaturation ratio

Growing community of inventors

Saint Paul, MN, United States of America

Gerald R Spartz