Puncture sealant composition
AssigneeThe Yokohama Rubber Co., Ltd.
InventorsKunio Kageyama, Mituharu Iwakura
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Abstract
Disclosed are a puncture sealant composition in emulsion for a tubeless pneumatic tire comprising a butyl rubber emulsion, a saturated hydrocarbon polymer emulsion, a crosslinking agent for the rubber and a crosslinking activator. A composition further containing a diene type unsaturated polymer emulsion and/or a natural rubber latex is also disclosed. These compositions are suitable for use in the production of a self-sealing vehicle tire.
Claims18
A puncture sealant for a tubeless pneumatic tire comprising the reaction product of (a) 100 parts by weight in terms of the solid content of an aqueous butyl rubber emulsion, (b) 50 to 500 parts by weight in terms of the solid content of at least one aqueous saturated hydrocarbon polymer emulsion, said saturated hydrocarbon polymer having an average number molecular weight of from 500 to 100,000 and being derived from at least one monoolefin having 4 to 6 carbon atoms, (c) 1 to 15 parts by weight of a crosslinking agent for the rubber and (d) a crosslinking activator.
Dependencies are inferred from the claim text.