Low flammability solvent composition
A solvent composition is provided that includes a chlorinated ethylene present from 75 to 80 total weight percent and at least one halocarbon miscible with the chlorinated ethylene and present in an amount to define a weight ratio of the chlorinated ethylene to said at least one halocarbon of from 75:25-80:20. The solvent composition has a flash point of less than 23 degrees Celsius and an initial boiling point of greater than 35 degrees Celsius. When the solvent is packaged as an aerosol with a propellant, the resulting solvent can be used in confined spaces owing to reduced ignitibility and better human health and environmental properties compared to conventional aerosol degreasers.
1. A solvent composition comprising:
a chlorinated ethylene present from 75 to 80 total weight percent;
at least one halocarbon miscible with said chlorinated ethylene and present in an amount to define a weight ratio of said chlorinated ethylene to said at least one halocarbon of from 75:25-80:20, the solvent composition having an initial boiling point of greater than 35 degrees Celsius; and
wherein said at least one halocarbon is a C 3 -C 7 molecule that is selected from the group consisting of: 1,3,3,3-tetrafluoropropene, methoxytridecafluoroheptene, trans-1-chloro-3,3,3-trifluoropropene, perfluorocyclohexane, methoxytridecafluoroheptene, and isomers of any of the aforementioned.
2. The solvent composition of claim 1 wherein said chlorinated ethylene is a majority by weight 1,2-trans-dichloroethylene.
3. The solvent composition of claim 1 wherein said chlorinated ethylene present from 77 to 80 total weight percent.
4. The solvent composition of claim 1 wherein said at least one halocarbon is a perfluorocarbon.
5. The solvent composition of claim 1 wherein said at least one halocarbon comprises 1,3,3,3-tetrafluoropropene.
6. A solvent composition comprising:
a chlorinated ethylene present from 75 to 80 total weight percent;
at least one halocarbon miscible with said chlorinated ethylene and present in an amount to define a weight ratio of said chlorinated ethylene to said at least one halocarbon fluorocarbon of from 75:25-80:20, the solvent composition having an initial boiling point of greater than 35 degrees Celsius;
wherein said at least one halocarbon comprises decafluoropentane.
7. A solvent composition comprising:
a chlorinated ethylene present from 75 to 80 total weight percent;
at least one halocarbon miscible with said chlorinated ethylene and present in an amount to define a weight ratio of said chlorinated ethylene to said at least one halocarbon fluorocarbon of from 75:25-80:20, the solvent composition an initial boiling point of greater than 35 degrees Celsius;
wherein said at least one halocarbon comprises 5-methoxy-perfluoro-3-pentene.
8. A solvent composition comprising:
a chlorinated ethylene present from 75 to 80 total weight percent;
at least one halocarbon miscible with said chlorinated ethylene and present in an amount to define a weight ratio of said chlorinated ethylene to said at least one halocarbon fluorocarbon of from 75:25-80:20, the solvent composition having an initial boiling point of greater than 35 degrees Celsius;
wherein said at least one halocarbon comprises 1-chloro-3,3,3 trifluoro propene.
9. The solvent composition of claim 1 further comprising a propellant.
10. The solvent composition of claim 9 wherein said propellant is carbon dioxide, nitrogen, trans-1,3,3,3-tetrafluoropropene, or a combination thereof.
11. The solvent composition of claim 9 wherein said propellant is present from 1 to 5 percent if the carbon dioxide or the nitrogen, and from 20-40 percent if the trans-1,3,3,3-tetrafluoropropene.
12. An aerosol package having a solvent content with a flash point of less than 23 degrees Celsius and an initial boiling point of greater than 35 degrees Celsius comprising:
an aerosol container having a volume and an aperture;
the solvent composition of claim 1 and a propellant within the volume; and
a spray nozzle selectively sealing the aperture.
13. The aerosol package of claim 12 wherein said propellant is carbon dioxide within the volume.
14. The solvent composition of claim 6 further comprising a propellant.
15. The solvent composition of claim 14 wherein said propellant is present from 1 to 5 percent if the carbon dioxide or the nitrogen, and from 20-40 percent if the trans-1,3,3,3-tetrafluoropropene.
16. The solvent composition of claim 7 further comprising a propellant.
17. The solvent composition of claim 16 wherein said propellant is carbon dioxide, nitrogen, trans-1,3,3,3-tetrafluoropropene, or a combination thereof.
18. The solvent composition of claim 17 wherein said propellant is present from 1 to 5 percent if the carbon dioxide or the nitrogen, and from 20-40 percent if the trans-1,3,3,3-tetrafluoropropene.
19. The solvent composition of claim 8 wherein said chlorinated ethylene is a majority by weight 1,2-trans-dichloroethylene.
20. The solvent composition of claim 8 further comprising a propellant.
21. The solvent composition of claim 17 wherein said propellant is carbon dioxide, nitrogen, trans-1,3,3,3-tetrafluoropropene, or a combination thereof.
22. The solvent composition of claim 17 wherein said propellant is present from 1 to 5 percent if the carbon dioxide or the nitrogen, and from 20-40 percent if the trans-1,3,3,3-tetrafluoropropene.