Fmc Corporation

International Technology Corporation

Peroxychem LLC

Joseph C Richards

Richard A Brown

Robert D Norris

William A Hills

John Crosby

Emmanuel A Dada

Kenneth Edmund Kellar

William C Snow

Crystal A Nesbitt

Donald S Lapham, Iii

Iii Lapham Donald S

A method for the rapid dilution of an aqueous peracid solution, particularly, peracetic acid, in which a concentrated peracid solution is diluted with an aqueous diluent to produce a more dilute peracid solution in which the solution components are already at equilibrium immediately after dilution. The peracid in a preferred embodiment of this method is peracetic acid, for which the aqueous diluent is acetic acid and water, or hydrogen peroxide and water, or acetic acid, hydrogen peroxide and water, whose relative amounts are selected to produce a diluted aqueous peracid acid solution whose peracetic acid, hydrogen peroxide and acetic acid components are in equilibrium immediately after dilution.

Rapid dilution of peracid solutions to equilibrated solutions

An aqueous composition suitable for use as a high-retention sanitizer, especially on irregular and/or non-horizontal surfaces and surfaces on which water does not readily spread, a method for sanitizing a surface using the composition, and kits comprising components of the composition. The composition contains an organic peracid, preferably peracetic acid, or other antimicrobial agent, and a retention aid. The retention aid preferably is provided as a concentrate for admixture with the antimicrobial agent at point of use and comprises a mixture of a non-ionic surfactant, an ionic surfactant, and optionally a water-soluble magnesium ion source; or a mixture of a biopolymer thickening agent and at least one surfactant, and optionally a water-soluble magnesium ion source. In either retention aid, the magnesium ion source stabilizes foams formed from the retention aids in hard water and maintains retention aidconcentrates in a liquid state at room temperature if one of the surfactants is sodium lauryl sulfate, or magnesium lauryl sulfate or mixture thereof. The composition is preferably applied as a foam to the surface of the object to be sanitized.

High retention sanitizer systems

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 manufacturing process and composition is claimed for a composition of matter comprising sodium carbonate, sodium carbonate perhydrate, a fluorescent whitening agent and a diphosphonic acid. The process comprises incorporating the fluorescent whitening agent and diphosphonic acid into aqueous hydrogen peroxide, uniformly applying the hydrogen peroxide solution to particulate sodium carbonate to form a reaction mixture, urging water vapor from the surface of the reaction mixture and maintaining the temperature of the reaction mixture between about 35.degree. C. and 80.degree. C.

Particulate composition containing bleach and optical brightener and

The present invention is a method for distributing a colloid-free, aqueous solution containing a peroxygen compound in a particulate matter containing clay without causing the clay to swell. It has been found that hydrogen peroxide alone causes swelling of clays. It is well-known that monovalent ions cause clays to disperse and swell. It is unexpected to find that perborate and persulfate anions do not cause clays to swell, even in the presence of sodium ions. The process is useful for enhancing the biodegradation of contaminants in clayey soils or for winning mineral values from clayey ore deposits.

Method for distributing an aqueous solution containing a peroxygen in

The invention provides a method to liquify a heavy brine completion fluid containing chlorides. The combination of a persulfate and hydrogen peroxide was found to be more effective than either compound alone, or than a peroxygen plus an activator.

Growing community of inventors

West Windsor, NJ, United States of America

Joseph C Richards