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US 5,064,560 AGranted
Ternary azeotropic compositions of 43-10mee (CF.sub.3 CHFCHFCH.sub.2 CF.sub .
AssigneeE. I. Du Pont de Nemours and Company
InventorAbid N. Merchant
Life of this patent
Estimating the term…
Abstract
Azeotropic mixtures of 1,1,1,2,3,4,4,5,5,5-decafluoropentane and trans 1,2-dichloroethylene with methanl or ethanol, the azeotropic mixtures being useful in solvent cleaning applications.
Claims15
An azeotropic composition consisting essentially of:
- (a) 55-65 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 32.5-40 weight percent trans 1,2-dichloroethylene, and 2.5-5 weight percent methanol, wherein the composition has a boiling point of about 35.3.degree. C. when the pressure is adjusted to substantially atmospheric pressure;
- or
- (b) 59-67 weight percent 1,1,1,2,3,4,4,5,5,5-decafluoropentane, 31.5-38 weight percent trans 1,2-dichloroethylene, and about 0.5-3 weight percent ethanol, wherein the composition has a boiling point of about 35.1.degree. C. when the pressure is adjusted to substantially atmospheric pressure.
Dependencies are inferred from the claim text.