Epoxidation of unsaturated cationically stabilized polymer...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S328300, C525S333100, C525S333200, C525S386000, C525S387000, C524S815000, C524S836000

Reexamination Certificate

active

07442746

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.

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