| 摘要 |
<p>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 combined with (134a) or other non-flammable and non-ozone depleting propellant/inflator is biodegradable.</p> |
