Topical skin protectants
AssigneeThe United States of America as represented by the Secretary of the Army
InventorMichael J. McCreery
Life of this patent
Estimating the term…
Abstract
Creams formed from about 35% to about 50% fine particulates of certain poly(tetrafluoroethylene) (PTFE) resins dispersed in perfluorinated polyether oils having viscosities from about 20 cSt to about 350 cSt afford good protection against chemical warfare agents such as sulfur mustard (HD), lewisite (L), sulfur mustard/Lewisite mixtures (HL), pinacolyl methylphosphonofluoridate (soman or GD), thickened soman (TGD) and O-ethyl S-2-diisopropylaminoethyl methylphosphonothiolate (vx).
Claims11
A topical skin protectant composition which comprises a dispersion of from at least 35% to about 50% by weight of finely divided polytetrafluoroethylene having a surface area below about 6 M.sup.2 /g in a liquid perfluorinated polyether having a viscosity between about 20 cSt and about 350 cSt.
A topical skin protectant composition which comprises a dispersion of from at least 35% to about 50% by weight of finely divided polytetrafluoroethylene having a surface area below about 6 M.sup.2 /g in a liquid perfluorinated polyether having a viscosity between about 20 cSt and about 350 cSt.
A process for preparing a topical skin protectant composition which comprises subjecting a mixture of from at least 35% to about 50% by weight finely divided polytetrafluoroethylene having a surface area below about 6 M.sup.2 /g in a perfluorinated polyether having a viscosity between about 20 cSt and about 350 cSt to high shear mixing.
Dependencies are inferred from the claim text.