Treatment of heavy metal contamination

to a substrate and cured, provides an abrasion-resistant coating on the substrate, comprising an aqueous-organic solvent mixture containing hydrolysis products and partial condensates of an ep• oxy-functional silane, a tetrafunc• tional silane, and a multifunc• tional compound wherein the multifunctional compound is se• lected from the group consisting of multifunctional carboxylic ac• ids, multifunctional anhydrides, and combinations thereof; and an amount of water sufficient to hy• drolyze the epoxy-functional si• lane and the tetrafunctional si• lane.

TREATMENT OF HEAVY IInAL CONTAliINAnON U.S. Patent 6,001,185. Dec. 14. 1999

C.L. Huff, Reagan. Texas

A method for in situ treatment of heavy metal contaminated sur• face coatings comprising deter• mining the amount and type of heavy metal compounds in a heavy metal contaminated sur• face coating to be decontami• nated, blending a mixture of a paint remover with an amount of calcium phosphate in sufficient concentration to react with the heavy metal compounds; apply• ing to the coating, allowing phos• phate to react to render the

.)2 Mason ~ (i..} Corporation

heavy metal compounds immo• bile and biologically nonhazard• ous; and removing the blended mixture where in the calcium phosphate is in the form of at least one compound selected from naturally occurring apatite, synthetic hydroxyapatite, diba• sic calcium phosphate, and phos• phate rock. ACID CLUNINGIDEOXIDIZING ALUIlINUIl AND TlTANIUIi U.S. Patent 6.001.186. Dec. 21. 1999 P.M. Johnson and L.R. Carlson,

assignors to Henkel Corp., Gulph Mills. Pa.

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nickel & copper • strippers

The Tin Specialists Stannic Chloride (Tin Tetrachloride) (Tin IV Chloride), (Tin Chloride) I Stannic Chloride Solution • Stannous Chloride Anhydrous (Tin II Chloride) I Stannous Chloride Solution I Stannous Chloride Dihydrate I Stannous Oxide I stannous Sulfate I Stannous Sulfat. Solution I Sodium Stannate I Potassium Stannate I Potassium Stannate Solution

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Mason Corporation chemicals' unique features include specialized service. the highest quality and purity in tin metals. and flexibllty in packag• Ing of the chemicals to meet the customers needs.

The only one-component, non-toxic powdered immer• sion nickel strippers on the market. They remove nickel from steel, copper, brass and zinc die-cast.

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FORMULATIONS

8-9: For removal of nickel from steel 8-929: For copper, brass and ZinC die-cast base metals

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8-9 PLUS: The ali-pur• pose 'Iob shop' formula for multlp e substrates

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8-913: For removal of nICkel from aluminum With no etdung and no hydrogen embnttlement

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8-9 Ni·Fe: For removal of nickel·Iron alloy coatings

AMORPHA-B TIN-NICKEL STRIPPER A low voltage electrical striP• per whICh removes tln·nlckel. t.n-cobalt and other amor• phous coatings from electrolyt• IC nICkel base coatings

CUFIX-E COPPER STRIPPER A low voltage electrical copper stripper for removal of copper from steel or aluminum With no attack One-component pow• der No ammonia. no cyanide, and no nitrates Waste disposal problems eliminated Plate out the copper and keep on stnp• ping ThiS could be the last copper stnpper bath you will ever have to buy

For more information

contact us at:

Mason Corporation P.O. Box 38. Schererville. IN 46375 1-219-865-8040 • Fax: 1-219-322-3611 800-326-3075 • Email: [email protected] Circle 025 on reader information card [>ecember 2000

METALX, INC. 2600 Roby Mart.n Road • LenOIr, NC 28645 1-828-758-4997' Fax 828-758-5033· E-mail colley@connlnccom

Circle 055 on reader information card

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