Method of coating organic fibers with polytetrafluoroethylene

Details Method of coating organic fibers with polytetrafluoroethylene Method of coating organic fibers with polytetrafluoroethylene

1978-08-03

1980-11-04

Smith, Ronald H.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

210508, 4273934, 4273935, 427421, 427428, 4274346, 428263, 428264, 428265, 428267, B32B 2734, D02G 336

Patent

active

042320879

ABSTRACT:
The disclosure is of a method for improving the acid resistance, hydrophobicity, oleophobicity and dust or dirt release properties of synthetic organic fibers. The method comprises coating the fibers with an aqueous dispersion of polytetrafluoroethylene particles in the presence of a water soluble, chromium complex of a long chain fluorochemical. The method is particularly advantageous for improving polyaramid fibers such as Nomex fibers in fabrics to be used as a filter means.

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patent: 3034925 (1962-05-01), DeMarco et al.
patent: 3476532 (1969-11-01), Hartman
patent: 3540923 (1970-11-01), Rozek
patent: 3881047 (1975-04-01), Massy et al.
patent: 3995085 (1976-11-01), McCown
patent: 4073993 (1978-02-01), Lark
patent: 4107368 (1978-08-01), Ratcliffe et al.
patent: 4125673 (1978-11-01), Roth et al.

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