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US 8,618,223 B2Granted
Functionalized polymers and tires therefrom
AssigneeBridgestone Corporation
InventorsTerrence E. Hogan, William L. Hergenrother
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Abstract
A method for preparing a functionalized polymer, the method comprising providing a reactive polymer, where the reactive polymer includes an oxygen anion, a sulfur anion, or a nitrogen anion, reacting the reactive polymer with carbon disulfide to form a polymer including a dithio carboxyl group, and reacting the polymer including the dithio carboxyl group with a blocking agent.
Claims12
A method for preparing a functionalized polymer, the method comprising:
- providing a reactive polydienyl polymer or polydienyl copolymer, where the reactive polymer includes an oxygen anion, a sulfur anion, or a nitrogen anion;
- reacting the reactive polymer with carbon disulfide to form a polymer including a dithio carboxyl group;
- and
- reacting the polymer including the dithio carboxyl group with a blocking agent.
1 more element
Dependencies are inferred from the claim text.