The Dow Chemical Company

Karel A Snoble

James A McIntyre

Robert F Phillips

Kenneth J Stutts

John R Moyer

John M Kalnins

A method comprising contacting an organic polymer viscosified halide ion-containing, aqueous solution with a sufficient amount of an in situ, electrochemically generated breaker suitable to reduce the viscosity of the solution.

Electrochemical methods for breaking high viscosity fluids

Polycarboxylates such as disodium diglycolate can form peroxyhydrates becoming a solid source of hydrogen peroxide. Upon dissolution in water, these poly(carboxylates and/or sulfonates) both form a chelant and hydrogen peroxide. This combination is particularly useful to form aqueous cleaning solutions for use in cleaning laundry, dishes and the like.

Solid chelating poly(carboxylate and/or sulfonate)peroxyhydrate bleaches

Dicarboxylic acids are prepared by oxidation of (poly)alkylene glycols with electrochemically generated nickel-oxide hydroxide.

Electrocatalytic oxidation of (poly)alkylene glycols

This invention is a method for preparing an ether ketone comprising electrolyzing a solution containing a (poly)propylene glycol monoether, hydroxyl ions and optionally water in an electrolytic cell having an anode at least partially coated with nickel peroxide, silver peroxide, cobalt peroxide or copper peroxide.

Electrochemical preparation of ether ketones from (poly)propylene glycol

A process for recovering amino alcohols, e.g. diisopropanolamine, from their corresponding cyclic reaction products, which products are the result of the reaction of CO.sub.2 and the amino alcohol, i.e., oxazolidinones, a situation commonly encountered in acid gas removal processes employing the amino alcohols alone or in combination with other liquids such as sulfolane (tetrahydrothiophene-1,1-dioxide) for example, by reacting the cyclic product with a small but catalytic amount (less than about 10 mol percent) of a base metal compound such as the hydroxide or a base which will convert into a hydroxide under the conditions of reaction, i.e. the acid carbonates, carbonates, metaborates, oxides or hydrides at temperatures above about 105.degree. C. to about the atmospheric boiling point of the reaction medium and, optionally, recovering the amino alcohol from the reaction mass.

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Midland, MI, United States of America

Karel A Snoble