Chemtura Corporation

Bio-lab, Inc.

Innovative Water Care, LLC

Slingshot Product Development Group

Nidhi Rawat

David F Purdy

Michael J Engram

Deqing Lei

Noah McNeely

Thomas M Lachocki

Allison Guyton

Amber Khanzada

Christopher Reed

Melissa Hickman

Jeffrey N Smith

Jerry Foster

Matthew Gabriel

Greg Harding

H Shaw Strothers, Iv

Karllee Barton

The present invention provides a quaternary ammonium etidronate compound (QAE) comprising a quaternary ammonium cation and an etidronate anion, having the Formula I.  A method for the preparation of such compounds is described by reacting a quaternary ammonium salt with an etidronic acid or salt thereof. Variable ratios of each reactant may also be used to form different QAE compounds. The quaternary ammonium etidronate compounds is useful in water treatment, cosmetic, hygiene, personal care, paint, coating, wood treatment, agrochemical, antimicrobial, disinfectant, or biocidal compositions; as the compound provides high anti-corrosive and biocidal properties; and low scaling properties. A water treatment composition is also described, having a QAE compound of Formula I and a water treating biocidal agent, useful in cooling towers and other recirculating water, or recreational water system.

Quaternary ammonium etidronates

A floating dispenser is provided for dispensing a solid, dissolvable water treatment chemical into ambient water. The dispenser includes a bucket having top and bottom ends, a top wall covering the top end, an opening for admitting ambient water into the bucket interior, and a floatation ring that keeps only the top end above water such that the interior is water filled when the dispenser floats. A basket is disposed in the interior of the bucket for carrying a solid, dissolvable water treatment chemical, such as calcium hypochlorite. The basket is buoyant and movable vertically toward the top wall of the bucket. The dispenser includes a refill indicator that indicates when most of a full load of said chemical has dissolved. The refill indicator includes a pair of tabs that are connected to the basket and slidably mounted in slots in the top wall. The tabs extend above the top wall when the buoyant basket floats upwardly, providing a visual indication of the need for a refill that can easily be seen from a side angle.

Floating dispenser for dispensing a solid dissolvable chemical into ambient water

A method for reducing the halogen off-gassing rate in a solid water treatment halogen-containing composition is provided comprising forming a solid water treatment halogen-containing composition comprising (a) a halogen containing source; (b) a boron-containing source and (c) a polyphosphate-containing source.

Solid composition for treating water

Solid water treatment compositions are provided comprising (a) a halogen-containing source; (b) a boron-containing source; and (c) a polyphosphate-containing source. Methods for their use are also provided.

Transition metal ions have the ability to increase the oxidation performance of the inorganic peroxy salts at room temperature by possibly lowering their activation energy or by producing more reactive free radicals. When two transition metal salts are used together to decompose dipersulfate, it provides synergistic oxidation activity, better than obtained by dipersulfate or dipersulfate with either copper or zinc alone. The transition metals mentioned are the water soluble salts of copper and zinc. Oxidation performance of sodium dipersulface in presence of catalytic amount of copper and zinc salts was determined by measuring the destruction of crystal violet dye at a wavelength of 589 nm.

Catalytic oxidation of peroxy salts

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Duluth, GA, United States of America

Nidhi Rawat