Environmentally friendly aerosolized latex tire sealant

Patent metadata

Field	Value
Publication number	US-9862156-B2
Application number	US-201615072152-A
Country	US
Kind code	B2
Filing date	Mar 16, 2016
Priority date	Apr 23, 2015
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

An environmentally friendly aerosol sealing composition for tire repair can simultaneously repair a punctured flat tire and inflate the flat tire to a pressure suitable for driving. The tire sealant composition includes a sealant concentrate and an aerosol propellant. The sealant concentrate is water-based and includes a glycerin antifreeze agent and a natural rubber latex that suitably has a mechanical stability of at least about 1050 seconds, and is substantially free of coagulants.

First claim

I claim:

1. A tire sealing composition, comprising a sealant concentrate and an aerosol propellant;
the sealant concentrate comprising glycerin, water, and a natural rubber latex having a mechanical stability of at least about 1050 seconds;
the aerosol propellant selected from the group consisting of hydrofluorocarbons, hydrofluoroolefins, dimethoxyethanol, nitrogen, propane and combinations thereof.

2. The tire sealing composition of claim 1 , wherein the natural rubber latex is a highly filtered natural rubber latex having an average particle size of about 400 microns or less.

3. The tire sealing composition of claim 1 , wherein the sealant concentrate further comprises synthetic rubber latex.

4. The tire sealing composition of claim 1 , wherein the sealant concentrate further comprises an emulsifier, in an amount of at least about 2.0% by weight.

5. The tire sealing composition of claim 1 , wherein the aerosol propellant comprises a hydrofluoroolefin selected from the group consisting of hydrotluoroethenes, hydrofluoropropenes, and combinations thereof.

6. The tire sealing composition of claim 5 , wherein the aerosol propellant is selected from the group consisting of 2,3,3,3-tetrafluoropropene, cis-3,3,3-etrafluoropropene, trans-1,3,3,3-tetrafluoropropene, and combinations thereof.

7. The tire sealing composition of claim 1 , wherein the natural rubber latex comprises about 55-65% by weight natural rubber, up to about 0.25% by weight ammonia, and a balance substantially of water.

8. The tire sealing composition of claim 1 , comprising about 20 to about 80% by weight of the sealant concentrate and about 20 to about 80% by weight of the aerosol propellant.

9. A tire sealing composition, comprising about 20 to about 80% by weight of a sealant concentrate and about 20 to about 80% by weight of an aerosol propellant;
the sealant concentrate comprising about 1 to about 50% by weight glycerin, about 20to about 80% by weight water, about 5 to about 50% by weight natural rubber latex having a mechanical stability of at least about 1050 seconds, and about 5 to about 50% by weight synthetic rubber latex;
the aerosol propellant comprising a hydrofluoroolefin.

10. The tire sealing composition of claim 9 , wherein the sealant concentrate further comprises an emulsifier.

11. The tire sealing composition of claim 10 , wherein the emulsifier constitutes at least about 2.0% by weight of the sealant concentrate.

12. The tire sealing composition of claim 9 , comprising about 30 to about 70% by weight of the sealant concentrate and about 30 to about 70% by weight of the aerosol propellant.

13. The tire sealing composition of claim 9 , wherein the sealant concentrate comprises about 2 to about 20% by weight glycerin, about 40 to about 75% by weight water, about 10 to about 25% natural rubber latex having a mechanical stability of at least about 1050 seconds, and about 10 to about 25% by weight of a synthetic rubber latex.

14. The tire sealing composition of claim 9 , wherein the aerosol propellant is selected from the group consisting of tetrafluoropropenes and combinations thereof.

15. The tire sealing composition of claim 10 , wherein the emulsifier comprises an alkyl polyethylene glycol ether.

16. The tire sealing composition of claim 9 , wherein the natural ubber latex has an average particle size of about 400 microns or less.

17. A tire sealing composition, comprising a sealant concentrate and an aerosol propellant;
the sealant concentrate comprising glycerin, water, an emulsifier, a natural rubber latex having a mechanical stability of at least about 1050 seconds, and a synthetic rubber latex;
the aerosol propellant constituting about 20 to about 80% by weight of the tire sealing composition.

18. The tire sealing composition of claim 17 . wherein the aerosol propellant is selected from the group consisting of hydrofluorocarbons, hydrofluoroolefins, and combinations thereof.

19. The tire sealing composition of claim 17 , wherein the aerosol propellant comprises a hydrofluoroolefin selected from the group consisting of hydrofluoroethenes, hydrofluoropropenes, and combinations thereof.

20. The tire sealing composition of claim 17 , wherein the aerosol propellant is selected from the group consisting of 2,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene, and combinations thereof.

21. The tire sealing composition of claim 17 , wherein the natural rubber latex is a highly filtered natural rubber latex having an average particle size of about 400 microns or less.

22. The tire sealing composition of claim 17 , wherein the emulsifier constitutes at least about 2.0% by weight of the sealant concentrate.

23. The tire sealing composition of claim 22 , wherein the emulsifier comprises an alkyl polyethylene glycol ether.

Assignees

• Illinois Tool Works
• Illinois Tool Works

Inventors

• Sulemanji Shees N

Classifications

• B29C73/163 Primary

  Sealing compositions or agents, e.g. combined with propellant agents · CPC title