Thermal bleaching process for non-contaminating fluorocarbon fib

Details Thermal bleaching process for non-contaminating fluorocarbon fib Thermal bleaching process for non-contaminating fluorocarbon fib

1992-06-30

1994-01-11

Kight, III, John

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

521 50, D02G 300, C08J 900

Patent

active

052779432

ABSTRACT:
A process for reducing the level of extractables, whitening, and rendering a porous material non-contaminating where the porous material is comprised of bonded fluorocarbon fibers and a fluorocarbon chemical binder. The thermal bleaching process includes exposing the material for at least several hours to a vigorously agitated oxygen-containing atmosphere maintained at a temperature of at least 400.degree. F.

REFERENCES:
patent: 4465797 (1984-08-01), Brownscombe et al.
patent: 4716074 (1987-12-01), Hurley et al.
Excerpt concerning Triton X100; "Encyclopedia of Surface Active Agents", Sisley, Chemical Publishing Company, (1961).

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