Sulfenyl halide polymerization terminators
AssigneeBridgestone/Firestone Research, Inc.
InventorsDavid F. Lawson, Mark L. Stayer, Thomas A. Antkowiak
Life of this patent
Estimating the term…
Abstract
A method of preparing a functionalized polymer comprising the steps of initiating the formation and propagation of an anionically-polymerized living polymer, and terminating the propagation of the living polymer by reacting the polymer with a terminating agent selected from the group of agents defined by the formulas (III), (IV), and (V) where C is a carbon atom, S is a sulfur atom, X is a halogen atom, R2 and R4 are independently selected from hydrogen and carbon-based moieties, and where the phenyl groups are selected from unsubstituted and substituted phenyl groups.
Claims14
A method of preparing a functionalized polymer comprising the steps of:
- initiating the formation and propagation of an anionically-polymerized living polymer, and
- terminating the propagation of the living polymer by reacting the polymer with a terminating agent selected from the group of agents defined by the formulas (III), (IV), and (V)
- where C is a carbon atom, S is a sulfur atom, X is a halogen atom, R2 and R4 are independently selected from hydrogen and carbon-based moieties, and where the phenyl groups are selected from unsubstituted and substituted phenyl groups.
A method of rerminating an anionically-polymerized polymer comprising the step of:
- reacting a living, anionically-polymerized polymer with a terminating agent that is defined by the formula (II)
- where S is a sulfur arom, C is a carbon atom, X is a halogen atom, and R2, R3, and R4 are independently selected from hydrogen atoms and aliphatic or aromatic hydrocarbon moieties.
Dependencies are inferred from the claim text.