Fmc Corporation

William A Hills

Basil A Guiliano

Henry A Pfeffer

Richard A Brown

James L Manganaro

William C Copenhafer

Charles V Juelke

Joseph C Richards

Dean S Thorp

William C Snow

Stephen Tomko

Charles V Juekle

Composition and method of making bicaroate and bicaroate/dipersulfate mixtures which are stabilized, in dry form, with a coherent coating of sodium borosilicate. The borosilicate is formed in situ by the reaction of a sodium silicate and a sodium metaborate.

Stable monopersulfate triple salt and its method of preparation

The invention provides an aqueous colloidal peroxygen composition comprising stable sols, gels and solids of C2 to C6 peroxycarboxylic acids with a polysaccharide gum, optionally with gum cross-linking agents such as boric acid, borate salts, urea and the like useful for delivering peracids in applications such as surface cleaners, detergent bleach, automatic dish washing formulations and the like. The compositions are particularly useful for sanitizing or bleaching at an acid or neutral pH compared with other chlorine or peroxygen bleach compounds.

Stable peracid sols, gels and solids

A process to manufacture and coat a sodium carbonate perhydrate containing 10.5% to 14% active oxygen which is stable in a non-phosphate detergent composition and which has a bulk density of from 900 to 1,050 kg/m.sup.3. Anhydrous sodium carbonate with a pore volume of at least 0.29 ml/g is contacted with 50% to 75% by weight hydrogen peroxide in the presence of 1-hydroxyethylidene-1,1-diphosphonic acid and water is evaporated at a rate to maintain a dry reaction mixture. The product is coated by sparging sodium borosilicate at a rate to avoid moistening the particles.

Process for manufacturing sodium carbonate perhydrate particles and

The invention provides a process to coat dry particles comprising sodium carbonate perhydrate to provide a stable dry particulate solid which releases hydrogen peroxide when contacted with an aqueous solution. The coated particles are readily soluble in water and/or stable when formulated into a solid detergent.

Peroxygen laundry bleach

A novel composition of matter is claimed comprising particles which appear to comprise sodium carbonate, sodium percarbonate (also called sodium carbonate peroxide or sodium carbonate perhydrate), and a stabilizer for the compound, preferably a diphosphonic acid, the sodium carbonate being present in sufficient quantity to form sodium carbonate monohydrate by reacting with the available water in the composition.

Soda ash peroxygen carrier

A novel process is claimed for manufacturing a composition of matter comprising particles which appear to comprise sodium carbonate, sodium carbonate peroxide and a stabilizer such as, a disphosphonic acid, the anhydrous sodium carbonate being present in sufficient quantity to form sodium carbonate monohydrate by reacting with all of the water formed on decomposition of the sodium percarbonate.

Process for manufacturing a soda ash peroxygen carrier

A method of preventing sludge deposition in the treatment of geothermal steam condensate with iron catalyzed/hydrogen peroxide by carrying out the treatment in the presence of an inorganic polyphosphate.

Hydrogen sulfide abatement in geothermal steam systems

Removing hydrogen sulfide from geothermal steam condensate is described whereby the hydrogen sulfide that is present in the condensate from a geothermal steam plant is oxidized with a peroxygen compound such as hydrogen peroxide in the presence of catalytic quantities of sodium vanadate under neutral to alkaline conditions.

Control of hydrogen sulfide emission from geothermal steam plants with

A novel compound, bis((1-oxo-2,6,7-trioxa-1-phosphabicyclo[2.2.2]oct-4-yl)methyl) 2,5-dibromoterephthalate, which is a highly effective flame-retardant additive for polyesters, and flame-retardant polyester compositions containing it.

Growing community of inventors

Lawrenceville, NJ, United States of America

William A Hills