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US 7,442,746 B2Granted
Epoxidation of unsaturated cationically stabilized polymer latex
AssigneeThe Goodyear Tire & Rubber Company
InventorDane Kenton Parker
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Abstract
The present invention is directed to a process for synthesizing an epoxidized polymer that includes the steps of: (1) preparing a cationically stabilized polymer latex containing at least one conjugated diolefin monomer in a first stage, (2) treating the polymer latex from step (1) with formic or acetic acid and hydrogen peroxide, and (3) allowing the mixture to react for a predetermined time and predetermined temperature to attain the desired level of epoxidation.
Claims17
A process for synthesizing an epoxidized polymer comprising the steps of:
- (1) preparing a cationically stabilized polymer latex by polymerizing at least one monomer comprising at least one conjugated diolefin monomer in a first stage, wherein the polymerization is a free radical polymerization carried out in the presence of (a) a latent surfactant and a surfactant activator or (b) a polymerizable cationic surfactant,
- (2) treating the polymer latex from step (1) with formic or acetic acid and hydrogen peroxide, and
- (3) allowing the mixture to react for a predetermined time and predetermined temperature to attain the desired level of epoxidation.
Dependencies are inferred from the claim text.