Back to results
US 7,683,111 B2Granted
Functionalized polymers and improved tires therefrom
AssigneeBridgestone Corporation
InventorsTerrence E. Hogan, Christine Rademacher
Life of this patent
Estimating the term…
Abstract
A functionalized elastomer defined by the formula where π includes a polymer chain, θ includes a group 14 element, R1 and R2 each independently include hydrogen, a monovalent organic group, or a polymer chain, R3 and R4 each independently include a divalent organic group or a covalent bond, R5, R6, R7, R8 and R9 each independently include a monovalent organic group or a hydrogen atom.
Claims5
A method of preparing a functionalized polymer, the method comprising:
- providing a living polymer;
- reacting the living polymer with a functionalized epoxide compound defined by the formula
- where R1 and R2 are each independently a monovalent organic group, R3 is a divalent organic group, R5, R6, and R7 each independently include a monovalent organic group or a hydrogen atom, θ is a Group 14 element, and λ includes a leaving group or an addition group, to form a precursor including an epoxide group;
- and
- reacting the precursor with a diamine to form a polymer including a primary amine group, where the diamine is defined by the formula
- where R8 and R9 each independently include a monovalent organic group or a hydrogen atom, and R4 includes a divalent organic group or a covalent bond.
3 more elements
Dependencies are inferred from the claim text.