Impact resistant polytetrafluoroethylene and preparation thereof
AssigneeE. I. Du Pont de Nemours and Company
InventorsEdward G. Howard, Jr., Arthur Z. Moss
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Abstract
The invention provides shaped, substantially unoriented, compositions of PTFE, having high notched Izod impact resistance, produced in a hot compression molding process wherein heat and pressure are applied simultaneously in a selected temperature range below the melting point of the virgin, as polymerized PTFE powder.
Claims13
A substantially unoriented, shaped PTFE composition prepared by hot compression molding consisting essentially of PTFE and 0 to about 15% by weight of one or more low molecular weight polyfluorinated substances, said composition characterized by a notched Izod impact resistance of at least about 5 ft-lbs/inch of notch.
Dependencies are inferred from the claim text.