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US 4,543,202 AGranted
Aerosol propellant compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorsPhilip L. Bartlett, John J. Daly, Jr., John D. Sterling, Jr.
Life of this patent
Estimating the term…
Abstract
Propellant gas compositions for aerosol products consisting essentially of monochlorodifluoromethane, dimethyl ether and 1-chloro-1,1-difluoroethane, said compositions having a vapor pressure of about 50 to 60 psig at 70.degree. F.
Claims2
An aerosol composition comprising 1-37% by weight of 1-chloro-1,1-difluoroethane, the balance being a mixture of monochlorodifluoromethane and dimethyl ether in a 40/60 weight ratio.
Dependencies are inferred from the claim text.