N-halothio-amide-modified elastomers and their application...

Details N-halothio-amide-modified elastomers and their application... N-halothio-amide-modified elastomers and their application...

C - Chemistry, Metallurgy

09

J

C09J 121/00 (2006.01) C08C 19/22 (2006.01) C09J 115/00 (2006.01)

Patent

CA 2281138

New modified elastomers, prepared by reaction of polydiene elastomers with N-halothio-sulfonamides or N-halothio-carboxamides are disclosed. The modified elastomers, diluted with solvents or oils, are applied as an adhesive layer between the surfaces of sulfur-vulcanized elastomeric components and vulcanized to produce an adhesive bond. The process is useful for adhering precured tire treads to cured tire carcasses and is thus applicable in the manufacture of retreaded tires. This invention more specifically discloses an adhesive composition which is comprised of a mixture of a rubbery polymer selected from the group consisting of N-halothio-sulfonamide-modified rubbery polymers and N-halothio-carboxamide-modified rubbery polymers in an oil. The present invention further discloses a laminated rubber article which is comprised of a first rubber layer and a second rubber layer wherein the first rubber layer is adhered to the second rubber layer with a rubbery polymer selected from the group consisting of N-halothio-sulfonamide- modified rubbery polymers and N-halothio-carboxamide- modified rubbery polymers.

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