Permeation-resistant ETFE composition and coatings
AssigneeE. I. Du Pont de Nemours and Company
InventorAnne Buegman
Life of this patent
Estimating the term…
Abstract
Compositions of ETFE and mica are resistant to permeation by water and provide useful coatings for such items as chemical equipment. The composition can be used either as films which can be laminated to substrates or as coatings which can be applied by electrostatic spray of dry powder thereby causing the powders to hot flock on a heated substrate.
Claims6
A film consisting essentially of copolymer of ethylene and tetrafluoroethylene (ETFE) and mica, wherein the ETFE is a copolymer of about 40 to about 60 mole % of ethylene and about 60 to about 40 mole % tetrafluoroethylene, based on the copolymer, wherein mica is present in amounts of about 3 to about 25% by weight based on ETFE plus mica, said film being a permeation resistant film with thickness of at least 150 microns.
Dependencies are inferred from the claim text.