Witco Corporation

Sherex Chemical Company, Inc.

Owen Portwood

Philip H Steiger

Shaun F Clancy

Gary W Earl

James G Fuller

Robert M Gilbert

Joe W Cotton

Diquaternary ammonium esters useful as bleach activators are disclosed as are bleach compositions comprising such an ester and peroxygen compound yield peroxide in solution.

Diquaternary compounds useful as bleach activators

Disclosed are bleaching compositions comprising diquaternary ammonium esters which are useful as bleach activators with a peroxygen compound to yield peroxide in solution.

Diquaternary compounds useful as bleach activators, and compositions

Diquaternary ammonium esters useful as bleach activators are disclosed, as are bleach compositions comprising such an ester and a peroxygen compound which yields peroxide in solution.

Diquaternary bleach activators and compositions containing them

The present invention is directed to a dewatering aid which functions unexpectedly efficiently in the dewatering of a particulate solids slurry, e.g. mineral ore concentrate or slurry, wherein a dewatering aid is added thereto followed by filtration of the slurry. Such improved dewatering results are achieved by adding to the mineral ore slurry, an effective amount of a dewatering aid comprising an alkoxylated C.sub.6 -C.sub.11 alkanol or alkanoic acid wherein alkoxylation is conducted with propylene oxide or butylene oxide.

Ore dewatering process and compositions therefor

The present invention is directed to a process for preparing a quaternary ammonium compound which comprises the reaction product of (a) a tertiary amine; (b) an alkylating agent characterized by the presence of a first member selected from the group consisting of hydroxyl and thiol radicals and a second member, a halogen atom, disposed on adjacent carbon atoms; and (c) an epoxy compound acting as an entraining reactant.

Process for preparing quaternary ammonium compounds

Esters are obtained from organic carboxylic acids and/or lower molecular weight esters thereof by a liquid phase reaction at temperatures of about 200.degree. C. to about 350.degree. C., pressures of about 50 psi to about 1800 psi, whereby water and/or alcohol by-product is removed during the reaction of the acid and/or lower molecular weight ester to the ester to thereby obtain the desired ester.

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Columbus, OH, United States of America

Owen Portwood