Sweat resistant gas protective material

Details Sweat resistant gas protective material Sweat resistant gas protective material

1978-01-30

1979-05-08

Van Balen, William J.

Coating processes

Foraminous product produced

Filter, sponge, or foam

2 2, 2 25, 428306, 428310, 428311, B05D 500

Patent

active

041537459

ABSTRACT:
A method is described of minimizing the adverse effects of sweat and sebum on a flexible porous material which is permeable to air and water vapor but resistant to passage therethrough of noxious chemicals in liquid or vapor form. The flexible porous material is, for instance, a laminated fabric material comprising an air- and water vapor-permeable open cell solid resin foam bonded to an air and water vapor-permeable fabric backing, within which foam is dispersed and bonded a particulate adsorbent material for the noxious chemicals, e.g. activated carbon. The aforesaid flexible porous material is protected from deterioration by exposure to sweat and sebum by treating it with a liquid organic polymeric water- and oil-repellent substance, preferably a fluorochemical, which is compatible with any substances used to disperse or bind the adsorbent material in the flexible porous material, and which is of a type which does not reduce to any significant extent the adsorptive capacity of the adsorbent, e.g. activated carbon.

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