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US 5,023,010 AGranted
Binary azeotropic compositions of 1,1,1,2,3,3-hexafluoro-3-methoxypropane with methanol or isopropanol or N-propanol
AssigneeE. I. Du Pont de Nemours and Company
InventorAbid N. Merchant
Life of this patent
Estimating the term…
Abstract
Azeotropic mixtures of 1,1,1,2,3,3-hexafluoro-3-methoxypropane with methanol or isopropanol or n-propanol, the azeotropic mixtures being useful in solvent cleaning applications.
Claims19
An azeotropic composition consisting essentially of:
- (a) about 89-99% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane with about 1-11% by weight methanol, wherein the composition has a boiling point of about 47.1.degree. C. when the pressure is adjusted to substantially atmospheric pressure;
- (b) about 95-99% by weight, 1,1,1,2,3,3-hexafluoro-3-methoxypropane with about 1-5% by weight isopropanol, wherein the composition has a boiling point of about 51.4.degree. C. when the pressure is adjusted to substantially atmospheric pressure;
- or
- (c) about 95.9-99.9% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane with about 0.1-4.1% by weight n-propanol, wherein the composition has a boiling point of about 51.2.degree. C. when the pressure is adjusted to substantially atmospheric pressure.
1 more element
An azeotropic composition consisting essentially of:
- (a) about 92-96% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane with about 4-8% by weight methanol, wherein the composition has a boiling point of about 47.1.degree. C. when the pressure is adjusted to substantially atmospheric pressure;
- (b) about 96-98% by weight, 1,1,1,2,3,3-hexafluoro-3-methyoxypropane with about 2-4% by weight isopropanol, wherein the composition has a boiling point of about 51.4.degree. C. when the pressure is adjusted to substantially atmospheric pressure;
- or
- (c) about 96.9-98.9% by weight 1,1,1,2,3,3-hexafluoro-3-methoxypropane with about 1.1-3.1% by weight n-propanol, wherein the composition has a boiling point of about 51.2.degree. C. when the pressure is adjusted to substantially atmospheric pressure.
1 more element
Dependencies are inferred from the claim text.