Italmatch Chemicals Sc LLC

Dequest Ag

Solutis, Inc.

Patrick P B Notte

Albert Devaux

Jan H J Van Bree

Tessa Johnson

Jerry L Brown

Jan Van Bree

Novel phosphonate compounds are disclosed embodying an aminophosphonate moiety and a selected reaction partner. These compounds offer beneficial alternatives, and additional possibilities, to extant phosphonates and are capable of delivering desirable benefits from an application standpoint and from a compatibility standpoint broadly.

Phosphonate compounds

A method is disclosed to inhibit scale formation in aqueous systems whereby a threshold amount of a scale inhibiting agent, represented by an aminoacid alkylphosphonic acid, is added to the aqueous system. The aminoacid moiety can be represented by &#x3b1;-species or by species having, at least, two or more carbon atoms between the carboxylic moiety and the amine group. These aminoacid based inhibitors exhibit unusually superior performance and system acceptability compared to leading state-of-the-art inhibitors.

Method of scale inhibition

A process for the manufacture of alkylamino alkylene phosphonic acids is disclosed. In detail, a specific phosphonate is reacted with an agent selected to yield an alkylamino moiety substituted by a radical selected from OH, OR', NH2, NHR&#x2032;, N(R&#x2032;), NH, N, S, S&#x2014;S and SH in aqueous alkaline medium having a pH of 8 or higher at a temperature of 0&#xb0; C. or higher.

Process for the manufacture of alkylamino alkylene phosphonic acids

Process for manufacturing temperature-sensitive polymers utilizing a heat transfer fluid comprising a hydrocarbon fluid selected from aliphatic hydrocarbons, alicyclic hydrocarbons, aliphatic- or alicyclic-substituted aromatic hydrocarbons, or mixtures thereof, the hydrocarbon fluid having a boiling point from 220&deg; C. to 250&deg; C. and a melting point less than 40&deg; C., and temperature-sensitive polymer articles produced therefrom.

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Wavre, Belgium

Patrick P B Notte