Compositions of 1-bromopropane, 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane and an organic solvent
AssigneeAlliedSignal Inc.
InventorsAlagappan Thenappan, Leonard Michael Stachura, Martin Richard Paonessa, Kane David Cook, Ian R. Shankland
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Abstract
The invention relates to novel azeotrope-like compositions of 1-bromopropane, 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane (HFE-7100) and at least one organic solvent selected from the group consisting of methanol, ethanol, 2-propanol, 2-methyl-2-propanol, tetrahydrofuran, nitromethane, and methylene chloride and more particularly to azeotrope-like compositions based on these compounds which are useful as solvents in refrigeration flushing, oxygen system cleaning and vapor degreasing applications.
Claims32
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane;
- and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 2 to about 70 weight percent methanol wherein said compositions boil at about 44.9.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane;
- and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 5 to about 50 weight percent ethanol wherein said compositions boil at about 48.4.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 2 to about 60 weight percent 2-propanol wherein said compositions boil at about 51.9.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane;
- and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 1 to about 30 weight percent 2-methyl-2-propanol wherein said compositions boil at about 53.3.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane;
- and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 0.2 to about 10 weight percent tetrahydrofuran wherein said compositions boil at about 53.8.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane;
- and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 0.4 to about 11 weight percent nitromethane wherein said compositions boil at about 53.4.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Azeotrope-like compositions consisting essentially of from about 50 to about 99 weight percent 1-bromopropane;
- from about 1 to about 50 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane;
- and, based on the total weight of said 1-bromopropane and 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane, from about 10 to about 40 weight percent methylene chloride wherein said compositions boil at about 35.7.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
An azeotrope-like composition consisting essentially of from about 89 to about 97 weight percent 1-bromopropane;
- from about 3 to about 11 weight percent nitromethane;
- and, based on the total weight of said 1-bromopropane and nitromethane, from about 18 to about 40 weight percent 4-methoxy-1,1,1,2,2,3,3,4,4-nonafluorobutane wherein said compositions boil at about 53.7.degree. C..+-.about 2.0.degree. C. at 760 mmHg.
Dependencies are inferred from the claim text.