Elastomeric sealant composition
AssigneeRocket Research Company
InventorsJoel V. Van Ornum, Peter L. Stang
Life of this patent
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Abstract
A carbon reinforced, partially cross-linked butyl rubber matrix sealant composition as described is particularly suitable for use as a self-healing tire puncture sealant. The sealant composition comprises a high average molecular weight butyl rubber and a low average molecular weight butyl rubber in a ratio of high to low molecular weight butyl rubber of between about 20/80 to 60/40, in admixture with a tackifier present in an amount between about 55 and 70 weight % of the composition. A partially hydrogenated block copolymer may be included in the admixture.
Claims7
A sealant composition comprising a reinforced partially cross-linked matrix comprising a high average molecular weight butyl rubber having a molecular weight in the range of approximately 100,000 to 400,000 and a low average molecular weight butyl rubber having a molecular weight in the range of approximately 10,000 to 40,000, in a ratio of high to low molecular weight butyl rubber of between about 35/65 and 45/55, in admixture with a tackifier present in an amount between about 55 and 70 weight % of the composition.
Dependencies are inferred from the claim text.