PROCESS FOR MODIFYING THE SURFACE OF POLYTETRAFLUORETHYLENE, MODIFIED MOULDINGS BASED ON POLYTETRAFLUORETHYLENE AND USE THEREOF

摘要

PCT No. PCT/EP86/00462 Sec. 371 Date May 29, 1987 Sec. 102(e) Date May 29, 1987 PCT Filed Aug. 5, 1986 PCT Pub. No. WO87/00847 PCT Pub. Date Feb. 12, 1987.A method for the modification of the surface of polytetrafluoroethylene or of copolymers consisting mainly of polytetrafluoroethylene by the action of fluorides of silicone, germanium, phosphorus or arsenic on the surface of the copolymer which is heated to at least 150 DEG C. in the presence of moisture or by the subsequent action of water or steam. The fluorides used penetrate into the polymer to be modified and form a polymeric, tightly adhering network during hydrolysis.