Betz Laboratories, Inc.

Stonhard

Fmc Corporation

Peroxychem LLC

Frank C Sessa

Roger C May

Carolyn E Massey

Dalbir S Sethi

Philip A Block

Lawrence J Kinsman

Contaminants, such as volatile organic compounds, are removed from an environmental medium, such as contaminated soil, rock, groundwater, waste water and the like, by treatment with a combination of a persulfate, such as a sodium persulfate, and hydrogen peroxide.

Treatment of environmental contaminants

This application discloses flooring compositions containing a hardener component, a resin component and an aggregate component; the compositions additionally contain either a monoepoxide or an alcohol or aromatic hydrocarbon.

Bisphenol epoxy-based flooring and coating materials

A trowelable, epoxy-based flooring material exhibits high impact strength, high chemical resistance and a closed exposed surface after curing, and has a hardener component including aliphatic amine and amino silane, a resin component including bisphenol formaldehyde epoxy and monoepoxide and an aggregate component, with the hardener and the resin being present in stoichiometric proportion.

Bisphenol formaldehyde epoxy-based flooring and coating materials

A method for inhibiting corrosion and controlling deposition in an iron containing aqueous medium is disclosed. The method is capable of providing for the formation of a protective passive oxide film on the metallic surfaces in contact with the aqueous medium without resulting in unacceptable iron based deposition or fouling. Surprisingly, the method does not call for the addition of an organic-phosphonic acid compound or derivative to the aqueous medium as would be normally expected due to the known iron dispersing characteristics of these type compounds. The invention comprises maintaining the pH level at 5.5 or above, assuring that a certain minimal calcium or other ion level is maintained, and adding to the system an orthophosphate compound, a water soluble acrylic acid/hydroxyalkylacrylate copolymer, and a topping agent selected from the group consisting of effective water soluble aminocarboxylic acids, lignosulfonates, citric acid, and tannic acid, and water soluble salt forms and mixtures thereof.

Control of iron induced fouling in water systems

A method for inhibiting corrosion and controlling deposition in an iron containing aqueous medium is disclosed. The method is capable of providing for the formation of a protective passive oxide film on the metallic surfaces in contact with the aqueous medium without resulting in unacceptable iron based deposition or fouling. Surprisingly, the method does not call for the addition of an organic-phosphonic acid compound or derivative to the aqueous medium as would be normally expected due to the known iron dispersing characteristics of these type compounds. The invention comprises maintaining the pH level at 5.5 or above, assuring that a certain minimal calcium or other ion level is maintained, and adding to the system an orthophosphate compound and a water soluble acrylic acid/hydroxyalkylacrylate copolymer.

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Wyncote, PA, United States of America

Frank C Sessa