Chemed Corporation

Dober Chemical Corporation

Jose T Jacob

Chih M Hwa

Dionisio G Cuisia

Vincent R Kuhn

Murrell L Salutsky

John F Dobrez

Thomas R Tutein

Russell O Menke

Richard L Every

Anne E Harrington

A method for reclaiming an aqueous emulsion useful as a metal-working lubricant/coolant which is contaminated with particles of at least one metal comprises contacting the contaminated emulsion with at least one metal solubilizing agent at metal solubilizing conditions to solubilize at least a portion of the metal particles. The thus contacted emulsions have improved suitability as a metal-working lubricant/coolant relative to the contaminated emulsion.

Metal-working emulsion reclaiming process

Detoxification of residues of quaternary ammonium salt biocides in water, using neutralizing amounts of anionic monomers.

Detoxification of residual quaternaries

Composition for prevention of ferrous corrosion consisting essentially of (a) sorbitol, (b) benzotriazole or tolyltriazole, and (c) a water-soluble phosphate.

Anti-corrosion composition

The invention disclosed provides a new composition and method for inhibiting corrosion. The present composition is relatively non-toxic, contains no chromates and zinc, and consists essentially of an azole and a water-soluble phosphate in an effective combination. Effective amounts of the corrosion inhibiting composition are used to provide corrosion protection in both ferrous and non-ferrous metals.

Azole-phosphate corrosion inhibiting composition and method

Lignin carboxylic acid is added to raw cement mix slurry prior to wet-grinding, whereby the amount of water required is reduced.

Production of raw mix cement slurries having reduced water content

The invention disclosed provides a new composition and method for inhibiting corrosion. The present composition is relatively non-toxic, contains no chromates, and consists essentially of an azole, water-soluble phosphate and water-soluble organophosphonic acid. Effective amounts of the corrosion inhibiting composition are used to provide corrosion protection in both ferrous and non-ferrous metals.

Composition and method of inhibiting corrosion

Oil-in-water or water-in-oil emulsions can be demulsified with cationic starches of the quaternary ammonium type.

Demulsification using cationic starches of the quaternary ammonium type

The invention disclosed provides a method for boiler water treatment to retard corrosion due to dissolved oxygen. Hydroxylamine, certain derivatives thereof and their salts have now been found to be highly effective oxygen scavengers for use in boiler water and thereby effect reduction of corrosion resulting from dissolved oxygen.

Boiler water treatment

The invention disclosed relates to new improved corrosion inhibitors for cooling water systems, preparation thereof and use to inhibit metal corrosion in aqueous systems. The present corrosion inhibitors are 1,3,5-triazine-4,6-diketo 2-dithio ammonium phosphamate and 1,3,5-triazine 4,6-dithio 2-dithio ammonium phosphamate.

Corrosion inhibitor for cooling water systems

The invention disclosed relates to a method and composition for inhibiting corrosion in aqueous systems, the composition including a mixture of amine pyrophosphate, an organophosphonate, and a triazole. The composition provides a non-polluting corrosion inhibitive system which is especially useful in aqueous units constructed of ferrous and non-ferrous metals.

Growing community of inventors

Lake Zurich, IL, United States of America

Jose T Jacob