Low flammability solvent composition

Patent metadata

Field	Value
Publication number	US-10273437-B2
Application number	US-201615271718-A
Country	US
Kind code	B2
Filing date	Sep 21, 2016
Priority date	Oct 8, 2015
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

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.

First claim

The invention claimed is:

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.

Assignees

• Illinois Tool Works

Inventors

• Vargas Olga Liliana

Classifications

• C09K3/30

  for aerosols (aerosol containers B65D83/14) · CPC title

• C23G5/02806

  containing only chlorine as halogen atom · CPC title

• C11D3/245

  containing fluorine · CPC title

• B08B3/02

  Cleaning by the force of jets or sprays · CPC title

• C11D7/5018

  Halogenated solvents · CPC title