ENVIROMENTALLY 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.
5 . The tire sealing composition of claim 1 , wherein the aerosol propellant comprises a hydrofluoroolefin selected from the group consisting of hydrofluoroethenes, 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-1,3,3,3 -tetrafluoropropene, 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 20 to 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 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.
12 . 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.
13 . The tire sealing composition of claim 9 , wherein the aerosol propellant is selected from the group consisting of tetrafluoropropenes and combinations thereof.
14 . The tire sealing composition of claim 10 , wherein the emulsifier comprises a polyglycol ether.
15 . The tire sealing composition of claim 9 , wherein the natural rubber latex has an average particle size of about 400 microns or less.
16 . A tire sealing composition, comprising a tire sealant concentrate and an aerosol propellant;
the tire 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.
17 . The tire sealing composition of claim 16 , wherein the aerosol propellant is selected from the group consisting of hydrofluorocarbons, hydrofluoroolefins, and combinations thereof.
18 . The tire sealing composition of claim 16 , wherein the aerosol propellant comprises a hydrofluoroolefin selected from the group consisting of hydrofluoroethenes, hydrofluoropropenes, and combinations thereof.
19 . The tire sealing composition of claim 16 , 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.
20 . The tire sealant composition of claim 16 , wherein the natural rubber latex is a highly filtered natural rubber latex having an average particle size of about 400 microns or less.