RECOVERY OF METAL SALTS U.S. Patent 5,804,057. Sept. 8, 1998 C. Zhou et al., assignors to Faraday Technology Inc., Dayton, Ohio

A method of removing metal salts f rom solut ion by e lec t ro lys is closely associated with an ion ex- change resin.

EPOXY COATING WITH CONDUCTIVE P I G M E N T S U.S. Patent 5,804,615. Sept. 8, 1998 P. Schreiber et al., assignors to Herberts GmbH, Wuppertal, German),

An aqueous composition suitable for coating plastic substrates com- prising 7.5 to 25% by weight of one or more epoxy resins; 1.5 to 10% by weight of one or more wa- ter-miscible polyamines; 0 to 10% by weight of one or more non- chlorinated polyolefins; 1 to 359~

by weight of an electrically con- ductive pigment; 5 to 25% by weight of one or more organic sol- vents; and 35 to 60% by weight of water, wherein the sum of the above-stated constituents amounts to 100%.

AQUEOUS COATING C O M P O S I T I O N U.S. Patent 5,804,640. Sept. 8, 1998 A.E. Laura et al., assignors to A- Line Products Corp., Detroit

An aqueous coating composition comprising up to 40 par ts by weight of the total composition of a polyol hav ing a molecu la r weight of 62 to 500; 0.5 part to 40 parts of a resin selected from the group consisting of epihydrin res- ins, epoxy resins, and polyepichlo- rohydrins; 0.05 to 15 parts of a sur fac tan t ; an amine selected

• Novalytes ...

• Aldolytes...

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• Aquations...

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to brighten, purify and control plating results!

to purify, enhance and brighten your zinc,copper, and nickel plating!

to clean up aluminum, steel, iron, brass, and copper!

to remove suspended solids and sludges, recover oil, treat alkaline cleaners and heavy metal affluents!

for brighter chromate conversion coatings in a variety of colors for zinc, aluminum, galvanized and cadmium-plated surfaces!

Cyanide-free zinc alloys of iron, cobalt, nickel and copper!

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/ ALDOA COMPANY Or reach us through: | 12727 Westwood Ave. IDEAL CHEMICAL & SUPPLY C Detroit, MI 48223-3433 P.O. Box 18698 (313) 273-5705 Memphis, TN 38181-0698 FAX: (313) 2 7 3 - 0 3 1 0 1-800-232-6776

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from primary, secondary, and ter- t iary aliphatic amines having an amine functionality of I to 3, and mixtures thereof; a mixture com- prising an acrylic polymer and polyurethane; and the balance water, wherein the composition is substantially free of aromatic or- ganic solvents.

POWDER P A I N T BINDER C O M P O S I T I O N U.S. Patent 5,804,646. Sept. 8, 1998 F.M. Witte et al., assignors to D S M N. V., Heerlen, Netherlands

A powder coating binder composi- tion comprising a hydroxyl func- tional polymer and a crosslinker, wherein the crosslinker includes a blocked 1,6-hexamethylene di- isocyanate and a blocked trimer of 1,6-hexamethylene diisocyanate, whe re in 1,2,4-tr iazole is the blocking agent.

AQUEOUS POLYURETHANE-UREA U.S. Patent 5,804,647. Sept. 8, 1998 K. Nach tkamp et of., assignors to Bayer AG, Leverkusen, Germany

An aqueous polyure thane-urea dispersion, which is film forming at temperatures of less than or equal to 20°C in the absence of film forming additives and dries at room temperature.

C O M P O S I T I O N FOR PRETREATING METAL SURFACES U.S. Patent 5,804,652. Sept. 8, 1998 L.E. Jones et at., assignors to Bulk Chemicals Inc., Leesport, Pa.

A composi t ion for t r e a t i n g a metal surface to improve paint adhes ion and corrosion resis- tance compris ing hydrof luor ic acid, a Group IV-B acid, and an aqueous ester cross-linked poly- mer system having a plural i ty of hydroxyl groups, the polymer system comprising the reaction product of polyvinyl alcohol and a po lymer h a v i n g carboxyl ic func t iona l groups and amino- nium hydroxide.

120 Metal Finishing