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US 4,131,725 AGranted
Polymer epoxidation process
AssigneePhillips Petroleum Company
InventorKishore Udipi
Life of this patent
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Abstract
An improved process for the production of epoxidized rubbery polymers substantially free of gel which comprises carrying out the epoxidation in an aliphatic or alicyclic hydrocarbon diluent with hydrogen peroxide and a mixture of formic acid and at least one other low molecular weight monocarboxylic acid.
Claims9
A process for the production of epoxidized polymers substantially free of gel which comprises contacting:
- (a) a rubbery polymer of a conjugated diene in
- (b) an aliphatic or alicyclic hydrocarbon diluent capable of dissolving said rubbery polymer with
- (c) hydrogen peroxide and
- (d) a mixture of formic acid and at least one other low molecular weight monocarboxylic acid under epoxidation conditions which produce substantially gel-free epoxidized rubbery polymers of conjugated diene.
1 more element
Dependencies are inferred from the claim text.