tern on a substrate; forming a nickel-con- taining barrier metal layer at a portion where an electrode of the circuit pattern is formed; forming a gold layer on the barrier metal layer by plating; heating to cause nickel to move toward a surface zone of the gold layer to deposit nickel compound in the surface zone thereby enhancing the fineness of a remaining part of the gold layer immediately below the surface zone: and removing the surface zone containing the nickel compound off the gold layer so as to expose a purified surface of the inside zone of the gold layer.

Aqueous Coating Composition U.S. Patent 5,767,175. June 16, 1998 Y Kamekura et al., assignors to Kansai Paint Co. Ltd., Amagasaki, Japan

An aqueous coating composition compris- ing an acrylic resin modified epoxy resin. which is the reaction product of bisphenol F epoxy resin, bisphenol F phenoxy resin. and acrylic resin having carboxyl functionality. the acrylic resin modified epoxy resin being dispersed into water.

Water-Based Paint Composition U.S. Patent 5,767,188. June 16, 1998 J. Kamikuri et al., assignors to BASF La&e t farben AG, Muenster-liiltrup, Germany

organotin-containing catalyst; the improve- ment comprising the addition to the elec- trodepositable composition of at least one water-immiscible acid-functional com- pound having a hydrocarbon chain of at least 5 carbon atoms selected from the group consisting of abietic acid and natural sources of abietic acid.

Apparatus for Coating Metal Sheets U.S. Patent 5,768,799. June 23, 1998 D. De/away and H.A.J. via/la, assignors to Stein Heurfey, Ris-Orangis, France

A method for curing a protective or deco- rative coating on a continuously moving metal sheet comprising displacing a length of the sheet along a chamber path in an oven, the chamber being enclosed by gas-tight, walled sections that are thermally insulated; energizing a source of induction heating that is located within the chamber: subjecting the tensth of sheet to induction heating for achieving a temperature sufficiently high to evaporate solvents in the coating and cause its curing; continuously extracting the evap- orated solvents from the chamber: introduc-

ing hot air into the chamber at a temperature greater than the dew point of the solvent; wherein the walls of the chamber remain at a temperature above the dew point; thereby preventing condensation of the solvents on surfaces of chamber walls.

Adhesion and Cohesion Paint Testing System U.S. Pafenf 5,768,936. June 23, 1998 G. Mann, Pasadena, CaM

A method for testing the strength of a test substance bonded to a substrate com- prising applying the test substance to the substrate so as to bond the test substance to the substrate; forming an aperture through the substrate and the test substance; posi- tioning a thin film patch atop an area of the test substance Idirectly above the aperture, wherein the thiln film patch extends beyond the perimeter of the aperture; forming a groove in the test substance to surround the thin film patch: bonding a plate to the test substance. thereby encapsulating the film between the test substance and the plate such that the adhesive strength of the bond between the plate and the test substance is

Water-based paint composition compris- ing a resin component, which is a mixture of water-compatibilized polyolefin resins, water-compatibilized acrylic resins, and water-compatibilized polyurethane resins.

Durable Hydrophilic Polymer Coatings U.S. Patent 5.767,189. June 16, 1998 C.F: Palmer Jr., assignor to E.I. duPonf de Nemours & Co.. Wilmington, Del.

A composition comprising an aqueous dispersion of a hydrophilic copolyester having repeating segments of a polyoxy- ethylene diester and a polyalkylene diester, and a polypropylene oxide polymer capped on one or both ends with an alkyl or ester group. said polymer having more than 4 propylene oxide units, up to 2% ethylene oxide units, and an average molecular weight of at least 300.

Electrodepositable Coating Composition U.S. Pafenf .5,767,191. June 16. 1998 S.R. Zawacky et al., assignors to PPG Industries Inc., P&burgh

In a method of etectrocoating an electro- conductive substrate, which serves as a cathode in an electrical circuit. wherein the electrodepositable composition comprises an active hydrogen-containing cationic resin electrodepositable on a cathode; a capped polyisocyanate curing agent: and an

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