US5250208A — Ternary azeotropic compositions

Claim 1

Independent Claim 370 words

An azeotropic or azeotrope like composition consisting essentially of 56.8 to 69.8 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 27.9 to 39.9 weight percent trans-1,2-dichloroethylene, and 1.8 to 3.8 weight percent methanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 34.7° C.; 63.2 to 69.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 30.0 to 36.0 weight percent trans-1,2-dichloroethylene, and 0.2 to 1.4 weight percent ethanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 36.1° C.; 60.0 to 68.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 31.7 to 39.7 weight percent trans-1,2-dichloro-ethylene, and 0.1 to 0.5 weight percent isopropanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 36.0° C.; 78.2 to 84.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 12.3 to 18.3 weight percent cis-1,2-dichloroethylene, and 2.5 to 4.5 weight percent methanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 40.2° C.; 72.4to 85.4 weight percent 1,1,2,2,3,3,4,4,-octafluorobutane 12.7 to 26.7 weight percent cis-1,2-dichloroethylene, and 0.4 to 2.4 weight percent ethanol, wherein when the pressure has been adjusted to to substantially atmospheric pressure, the boiling point of the composition is about 42.5° C.; 75.0 to 86.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 12.5 to 23.5 weight percent cis-1,2-dichloroethylene, and 0.1 to 1.0 weight percent isopropanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 42.2° C.; 76.6 to 84.6 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 14.0 to 18.0 weight percent 1,1-dichloroethane, and 1.4 to 5.4 weight percent methanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 40.3° C.; 73.5 to 82.5 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 17.1 to 24.1 weight percent 1,1-dichloroethane, and 0.4 to 2.4 weight percent ethanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 39.6° C.; and 77.0 to 87.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 12.6 to 22.6 weight percent 1,1-dichlorethane, and 0.1 to 1.0 weight percent isopropanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 42.6° C.

Claim 2

Dependent Claim 370 words

An azeotropic or azeotrope like composition consisting essentially of 56.8 to 69.8 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 27.9 to 39.9 weight percent trans-1,2-dichloroethylene, and 1.8 to 3.8 weight percent methanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 34.7° C.; 63.2 to 69.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 30.0 to 36.0 weight percent trans-1,2-dichloroethylene, and 0.2 to 1.4 weight percent ethanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 36.1° C.; 60.0 to 68.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 31.7 to 39.7 weight percent trans-1,2-dichloro-ethylene, and 0.1 to 0.5 weight percent isopropanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 36.0° C.; 78.2 to 84.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 12.3 to 18.3 weight percent cis-1,2-dichloroethylene, and 2.5 to 4.5 weight percent methanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 40.2° C.; 72.4to 85.4 weight percent 1,1,2,2,3,3,4,4,-octafluorobutane 12.7 to 26.7 weight percent cis-1,2-dichloroethylene, and 0.4 to 2.4 weight percent ethanol, wherein when the pressure has been adjusted to to substantially atmospheric pressure, the boiling point of the composition is about 42.5° C.; 75.0 to 86.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 12.5 to 23.5 weight percent cis-1,2-dichloroethylene, and 0.1 to 1.0 weight percent isopropanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 42.2° C.; 76.6 to 84.6 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 14.0 to 18.0 weight percent 1,1-dichloroethane, and 1.4 to 5.4 weight percent methanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 40.3° C.; 73.5 to 82.5 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 17.1 to 24.1 weight percent 1,1-dichloroethane, and 0.4 to 2.4 weight percent ethanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 39.6° C.; and 77.0 to 87.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 12.6 to 22.6 weight percent 1,1-dichlorethane, and 0.1 to 1.0 weight percent isopropanol, wherein when the pressure has been adjusted to substantially atmospheric pressure, the boiling point of the composition is about 42.6° C.

Claim 3

Dependent Claim 182 words

The composition of claim 1, consisting essentially of 62.0 to 64.6 weight percent 1,1,2,2,3,3,4,4-octaflurobutane, 32.7 to 35.1 weight percent trans-1,2-dichloroethylene, and 2.6 to 3.0 weight percent methanol; 65.9 to 66.5 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 32.8 to 33.2 weight percent trans-1,2-dichloroethylene, and 0.6 to 1.0 weight percent ethanol; 63.9 to 64.1 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 35.5 to 35.9 weight percent trans-1,2-dichloroethylene, and 0.2 to 0.4 weight percent isopropanol; 80.9 to 81.5 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 15.0 to 15.6 weight percent cis-1,2-dichloroethylene, and 3.4 to 3.6 weight percent methanol; 77.6 to 80.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 18.3 to 21.1 weight percent cis-1,2-dichloroethylene, and 1.2 to 1.6 weight percent ethanol; 79.0 to 83.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 17.5 to 19.5 weight percent cis-1,2-dichloroethylene, and 0.2 to 0.4 weight percent isopropanol; 80.2 to 81.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 15.8 to 16.2 weight percent 1,1-dichloroethane, and about 3.2 to 3.6 weight percent methanol; 77.1 to 78.9 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 19.9 to 21.3 weight percent 1,1-dichloroethane, and 1.2 to 1.6 weight percent ethanol; and 81.9 to 82.1 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, 17.5 to 17.7 weight percent 1,1-dichloroethane, and 0.2 to 0.6 weight percent isopropanol.

Claim 4

Dependent Claim 154 words

The composition of claim 1, consisting essentially of about 63.3 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 33.9 weight percent trans-1,2-dichloroethylene, and about 2.8 weight percent methanol; about 66.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 33.1 weight percent trans-1,2-dichloroethylene, and about 0.7 weight percent ethanol; about 64.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 35.7 weight percent trans-1,2-dichloroethylene, and about 0.3 weight percent isopropanol; of about 81.2 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 15.3 weight percent cis-1,2-dichloroethylene, and about 3.5 weight percent methanol; about 78.9 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 19.7 weight percent cis-1,2-dichloroethylene, and about 1.4 weight percent ethanol; about 81.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 18.6 weight percent cis-1,2-dichloroethylene, and about 0.4 weight percent isopropanol; about 80.6 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 16.0 weight percent 1,1-dichloroethane, and about 3.4 weight percent methanol; about 78.1 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 20.6 weight percent 1,1-dichloroethane, and about 1.4 weight percent ethanol; and about 82.0 weight percent 1,1,2,2,3,3,4,4-octafluorobutane, about 17.6 weight percent 1,1-dichloroethane, and about 0.4 weight percent isopropanol.

Claim 5

Dependent Claim 21 words

A process for cleaning a solid surface comprising treating said surface with a composition of any of claims 1 through 3.

Claim 6

Dependent Claim 30 words

A process for producing refrigeration, comprising condensing a composition of any of claims 1 through 3, and thereafter evaporating said composition in the vicinity of a body to be cooled.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1996-10-04	1997-04-05	1997-10-05	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2000-10-04	2001-04-05	2001-10-05	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2004-10-04	2005-04-05	2005-10-05	$7700.00	Window Closed / Lapsed

Ternary azeotropic compositions

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