Thad S Hormel

42051886, May 27, 1980

Sep 8, 1978

5/940698

Wayne C. Muench - Midland MI
Thad S. Hormel - Midland MI
Pamela M. Kirchhoff - Midland MI
Lanny A. Robbins - Midland MI

The Dow Chemical Company - Midland MI

C07C 3724

568764

A process is provided for the production of hydroxybenzyl alcohols, comprising condensing phenol with formaldehyde in an alkaline solution to form a mixture of ortho- and para-hydroxymethyl phenols, and solvent extracting unreacted phenol from the resulting alkaline hydroxybenzyl alcohol condensate solution. The phenol-reduced hydroxybenzyl alcohol condensate solution is particularly suited for treatment with excess caustic and subsequent oxidation of the resulting aqueous solution of ortho- and para-hydroxybenzyl alcohols-sodium salt to yield the corresponding ortho- and para-hydroxybenzaldehydes-sodium salt.

42514592, Feb 17, 1981

Jul 11, 1979

6/056474

Kim G. Bargeron - Midland MI
Thad S. Hormel - Midland MI
David K. Winegardner - Midland MI
Bruce G. Lovelace - Midland MI

The Dow Chemical Company - Midland MI

C07C10200
C07C 8500

564215

The title compounds are prepared by the reaction of a 2-alkyl-2-oxazoline with hydrogen sulfide in a continuous process wherein both reactants are maintained in the liquid phase throughout the reaction by the use of superatmospheric pressure. This continuous process reduces the reaction time substantially compared to prior art process and also reduces the quantity of by-products.

49942522, Feb 19, 1991

Feb 9, 1990

7/478127

Karl L. Krumel - Midland MI
Charles A. Wilson - Pittsburg CA
Thad S. Hormel - Midland MI

DowElanco - Indianapolis IN

C01D 314
C07C 5144

423499

Finely divided potassium chloride is removed from mixtures with polar, aprotic solvents, such as N-methyl-2-pyrrolidinone, by combining the mixture with sufficient water to dissolve a significant portion, but not all of the potassium chloride present, removing the added water by distillation, and subsequently separating the larger crystals of the salt that form by filtration or centrifugation. The amount of water employed is in the same general range as the amount of polar, aprotic solvent present.

41906055, Feb 26, 1980

Jun 30, 1978

5/920883

Wayne C. Muench - Midland MI
Glen O. Strand - Midland MI
Thad S. Hormel - Midland MI

The Dow Chemical Company - Midland MI

C07C 4516

260600R

A noble metal catalyst, such as palladium, is activated by successive and sequential reactions with an alcohol, such as hydroxybenzyl alcohol, and oxygen or a gas containing oxygen in an aqueous, preferably alkaline, medium, The catalyst activated in the aforementioned manner is particularly useful for the oxidation of alcohols to the corresponding aldehydes.