Morton International, Inc.

Rohm and Haas Company

Morton Thiokol Inc.

Jeffrey A Ulman

Lawrence J Guilbault

Michael M Cook

Andrew T Daly

Richard P Haley

Walter Verstraeten

Willy Verleye

Michael A Cook

Coating powders having a resin system of comprising an epoxy resin and a carboxylic acid functional polymer contain a cure catalyst of formulae (I), (II) or mixtures of (I) and (II):

Coating powders for heat-sensitive substrates

An aqueous solution of sodium borohydride, sodium hydroxide, and an anionic polymer is useful for the reduction and separation of metals in wastewater and it is hydrolytically stable for a period of six months. It may also contain an alkali metal aluminate or alum. Thus, a one-package treatment of wastewater is provided by the invention described herein.

Alkali metal borohydride/anionic polymer solutions

An aqueous solution for removing metals from waste water contains sodium borohydride, sodium aluminate and sodium hydroxide.

Sodium borohydride/sodium aluminate

Redissolution and/or reoxidation of metals precipitated by chemical reduction from aqueous solutions can be prevented by adding a bicyclic, aromatic, organonitrogen compound to the solution in a amount insufficient to cause precipitation of said metal but sufficient to prevent the redissolution and reoxidation of the precipitate. The compounds added can be selected from benzotriazoles, benzothiazols and benzimidazoles.

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Beverly, MA, United States of America

Jeffrey A Ulman