| abstract |
A new tire sealant and inflator composition is provided, which combines a sealant in an aqueous carrier with a non-flammable, non-ozone depleting propellant/inflator. A preferred composition combines a sealant composition with 1,1,1,2-tetrafluoroethane (134a). In a preferred embodiment, a vapor pressure depressant is combined with the sealant and 134a. A preferred sealant and inflator composition comprises from about 20% to about 80% of 134a, from about 2% to about 10% of a sealer, such as latex, or a polyvinyl acetate emulsion; from about 1% to about 8% of a freezing point depressant, such as an alkylene glycol; from about 0.1% to about 1% of a corrosion inhibitor, such as ammonia; from about 30% to about 70% of a carrier, such as water; and from about 4% to about 40% of a vapor pressure depressant, such as a glycol ether. A preferred vapor pressure depressant is 2-butoxyethanol, and a preferred freezing point depressant is ethylene glycol. Preferably the sealant composition combine with 134a or other non-flammable and non-ozone depleting propellant/inflator is biodegradable. |