nonporous, hydrophilic coating, produced by applying 3 coating formulation compris- ing, in an aqueous vehicle, effective minor amounts Of nitrilotrismethylenetriphos- phonic acid, phosphoric acid, and borate material selected from the group consisting of zinc borate and sodium borate, subject to the proviso that the material includes an effective amount of at least one borate, said coating formulation also containing an ef- fective minor amount of polyacrylic acid, being essentially free of silica, alumina, and precursors thereof, and said amounts, in combination, being effective to provide a coating producing a stable contact angle with water of not more than 15”; and heat- ing the surface to dry the coating thereon.

Coated Steel Plate U.S. Patent 5,514,483. May 7, 1996 M Sujta et a/., assignors to Kawasaki Steel Corp., Japan

An organic composite coated steel plate having improved corrosion resistance in an as-worked state that comprises a steel plate substrate; a plating layer selected from the group consisting of zinc and zinc alloy: a chromate film; and an aqueous resin layer comprising water-dispersed silica and an- ionic aqueous resin.

Multicoat Coating U.S. Patent 5,514,746. May 7, 1996 S. Schwafte et al, assignors to BASF Lacke f Farben, AG, Muenster Hittrup, Germany

A process for the production of a multi- coat protective and/or decorative coating in which a pigmented basecoat composition is applied to the substrate surface; a polymer film is formed from the composition ap- plied; a transparent aqueous topcoat com- position containing a water-dispersible polyacrylate resin as binder and an amino resin as crosslinking agent is applied to the

basecoat obtained in this way; and subse- quently the basecoat is baked together with the topcoat.

Polishing Method U.S. Patent 5,516,327. May 14, 1996 S. Kawasaki, assignor to Asahi Tee. COQI. and BBF Yamate Corp., both of Shizuoka, Japan

A polishing method in which a work is polished by a buff wheel rotated by rotary drive means while polishing agent is sup- plied in a gap between the polishing sur- face of the buff wheel and the surface of the work to be polished, characterized in that the polishing surface of the buff wheel is capable of reciprocating parallel to the sur- face of the work to be polished while the polishing is performed.

Process for Phosphating Steel Strip Galvanized on One Side U.S. Patent 5,516,372. May 14, 1996 J. Riesop et al., assignors to Henkel KG, Duesseldorf and Krupp Hoesch Stahl AG, Dortmund, both of Germany

A process for phosphating a steel strip electrolytically galvanized on one side to

Functional Coatings Comprislng Light Emitting Particles U.S. Patent 5,514,479. May 7, 1996 IV. Feldstein, Princeton, N.J.

A plated article comprising a substrate, a metallic functional coating and finely di- vided particulate matter dispersed therein having light emitting properties.

l Completely assembledand WIred. 0 Pump can be unscrewed and remotely located. l Solenoid valve can be substituted or used in conjuncbon

with pump. l 2 sets of relay contacts rated 10 amps l Proportional control now included. 0 Adjustable flow rate of 1O:l with ranges of 3-30, 30-300.

63-630 or 173-l 730 ml/mm a Weatherproof case Included

I

Provides simplified AUTOMATIC pH control of effluent in stream, laboratory or plant.

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All Plating

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using a

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METAL FINISHING l JANUARY 1997 97