Environmentally friendly aerosolized latex tire sealant
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.
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.