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US 5,295,525 AGranted
Puncture sealant formulation
AssigneeMichelin Recherche et Technique S.A.
InventorJoseph C. Sanda, Jr.
Life of this patent
Estimating the term…
Abstract
The present invention resides in a sealant composition for pressurized articles, and in the articles comprising the sealant. The present invention is particularly useful as a sealant for high pressure tires, adapted for pressures higher than 50 psig. The sealant of the present invention comprises a high molecular weight elastomer, a low molecular weight liquid elastomer, and a cross-linking agent. The low molecular weight liquid elastomer is substantially free of iron.
Claims14
A sealant for a pressurized article comprising:
- a high molecular weight elastomer;
- a low molecular weight liquid elastomer;
- and
- a cross-linking agent;
- said low molecular weight liquid elastomer being substantially free of iron.
2 more elements
A sealant for a high pressure tubeless tire comprising:
- a high molecular weight elastomer;
- a low molecular weight liquid elastomer;
- and
- a titanate ester curing agent;
- said low molecular weight elastomer being a blend of (a) a polyisoprene which is essentially free of iron and is not chemically modified so as to have reactive groups, and (b) about 2%-5%, based on the total weight of the blend, of a partially polymerized cis-polyisoprene which is chemically modified and has free carboxyl groups capable of reacting with said titanate ester, said partially polymerized cis-polyisoprene having about three (3) carboxyl groups per molecule and also being substantially free of iron.
2 more elements
Dependencies are inferred from the claim text.