Aerosol package compositions containing fluorinated hydrocarbon

Details Aerosol package compositions containing fluorinated hydrocarbon Aerosol package compositions containing fluorinated hydrocarbon

1998-05-07

2000-04-04

Dodson, Shelley A.

Drug, bio-affecting and body treating compositions

Anti-perspirants or perspiration deodorants

424 66, 424 67, 424 68, 424400, 424401, A61K 732, A61K 700

Patent

active

060457848

ABSTRACT:
Disclosed are anhydrous aerosol package compositions which comprise (a) a Lewis acid having a pKa of less than about 5.0; (b) from about 5% to about 95% by weight of a fluorinated hydrocarbon propellant; (c) a hydrogen bonded water source; and (d) a rust inhibition means. The aerosol package compositions are preferably anhydrous aerosol antiperspirants which comprise an antiperspirant active, a fluorinated hydrocarbon propellant such as 1,1-difluroethane, and a rust inhibition means, wherein the antiperspirant active acts as a Lewis acid and contains hydrogen bonded water. It was found that aerosol package compositions containing fluorinated hydrocarbons, a strong Lewis acid, and a hydrogen bonded water source are surprisingly susceptible to corrosion or rust formation of any metal surface within the package, unless a known or otherwise effective rust inhibition means is added to or used in association with the packaged aerosol composition.

REFERENCES:
patent: 4584021 (1986-04-01), Bartlett
patent: 4806338 (1989-02-01), Smith

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