Shell Oil Comapny

Herbert E Fried

Charles Lee Edwards

David M Singleton

Pen-Chung Wang

Thomas H Johnson

Michael Wayne Potter

Donald L Wood

Gayle Edward Back

Raul A Pabon, Jr

Werner Lilienthal

Glynnda Addicks

Jimmie Dale Elmore

A process for partially oxidizing and converting a polyoxyalkylene polyol composition to a polycarboxylic acid composition comprising reacting a polyoxyalkylene polyol composition with a stable free radical nitroxide in the presence of an NO,generating compound, a flow of air or oxygen, and optionally water, at elevated temperatures. The oxidation reaction is discontinued by deactivating the catalyst and removing the source of air or oxygen, the NO,generating source, and the optional water. From 60% to no more than 95% of the polyoxyalkylene polyol composition is converted.

Partial oxidation of polyoxyalkylene polyol compositions to polycarboxylic acid compositions

A process for the preparation of polymeric alpha,omega-dialdehydes, diacids and mixtures thereof, which process comprises reacting a corresponding polymeric aliphatic alkanediol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound, an oxidant and, optionally, a solvent and/or a bromide-containing compound, and thereafter separating out the polymeric alpha,omega-dialdehyde and/or diacid.

Process for the preparation of polymeric alpha, omega-dialdehydes and

A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a NO.sub.x -generating compound and, optionally, an oxidant and/or a solvent at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

Preparation of alkoxyalkanoic acids

A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a chlorine-containing oxidant and a solvent at a temperature in the range of from about 0.degree. C. to about 35.degree. C. and thereafter separating out the alkoxyalkanoic acid.

A process for the preparation of an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a cerium salt, a highly polar solvent, an oxidant and water, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

Process for the preparation of alkoxyalkanoic acids

A process for the preparation of an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a chromium (II) salt, a highly polar solvent, an oxidant and water, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound and, optionally, an oxidant at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

A process for the preparation of a branched alkoxyalkanoic acid by reacting the corresponding branched alkoxyalkanol with a stable free radical nitroxide in the presence of a NO.sub.X -generating compound at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the branched alkoxyalkanoic acid.

Process for the preparation of branched alkoxyalkanoic acids

A process for the preparation of an aromatic alkoxyalkanoic acid by reacting the corresponding aromatic alkoxyalkanol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound and an oxidant at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the aromatic alkoxyalkanoic acid.

Preparation of aromatic alkoxyalkanoic acids

A process for the preparation of an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound, a solvent and an oxidant, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

A process for the preparation of an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a metal salt selected from the group consisting of a copper salt, an iron salt and mixtures thereof, a nitrite compound, a highly polar solvent, an oxidant and water, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

A process for the preparation of an aldehyde by reacting the corresponding aryl methanol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the aldehyde.

Process for the preparation of aldehydes

A process for the preparation of a polyoxyalkylene-alpha,omega-dicarboxylic acid by reacting the corresponding polyoxyalkylene glycol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound and optionally, an oxidant and/or a solvent, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the polyoxyalkylene-alpha,omega-dicarboxylic acid.

Preparation of polyoxyalkylene-alpha,omega-dicarboxylic acids

A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound and, optionally, an oxidant and/or a solvent, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.

A process for the preparation of a secondary alkoxyalkanoic acid by reacting the corresponding secondary alkoxyalkanol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound and an oxidant at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the secondary alkoxyalkanoic acid.

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Houston, TX, United States of America

Herbert E Fried