Back to results
US 5,066,417 AGranted
Binary azeotropic compositions of 2,2-dichloro-1,2-difluoroethane with methanol, ethanol, or trans-1,2-dichloroethylene
AssigneeE. I. Du Pont de Nemours and Company
InventorAbid N. Merchant
Life of this patent
Estimating the term…
Abstract
Azeotropic mixtures of 2,2-dichloro-1,2-difluoroethane (HCFC-132c) with methanol, ethanol, or trans-1,2-dichloroethylene (t-HCC-1130), the azeotropic mixtures being useful in solvent cleaning applications.
Claims10
An azeotrope consisting essentially of from 85 to 95 weight percent 2,2-dichloro-1,2-difluoroethane and 5 to 15 weight percent methanol wherein said azeotrope boils at about 44.0.degree. C. at atmospheric pressure;
- 92 to 98 weight percent 2,2-dichloro-1,2-difluoroethane and 2 to 8 weight percent ethanol wherein said azeotrope boils at about 45.8.degree. C. at atmospheric pressure, or 45 to 55 weight percent 2,2-dichloro-1,2-difluoroethane and 45 to 55 weight percent trans-1,2-dichloroethylene wherein said azeotrope boils at about 44.5.degree. C. at atmospheric pressure.
Dependencies are inferred from the claim text.