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I I particles and stripping solution and uni- formly dispensing the resist particles and stripping solution and thereafter passing the uniform dispersion through a filter screen separator. Fluoride Removal From Metal Solution U.S. Patent 5,531,903. July 2, 1996 C.R.S.M. Hampton eta/., assignors to Cominco Ltd., Vancouver, Canada A method of removing fluoride from an aqueous metal sulfate solution comprising mixing with a predetermined amount of an aluminum anodizing waste treatment sludge for a predetermined period of time to form a slurry mixture; and performing a solid/liquid separation to obtain a fluoride- loaded sludge and a treated metal sulfate solution: UV-Curable Clearcoat U.S. Patent 5,532,027. July 2, 1996 J.D. Nordstrom et al., assignors to E.I. Du Pont de Nemours & Co., Wilmington, De/. In a process for forming multiple coats of finishes on a substrate used as the exte- rior of a motor vehicle comprising applying a layer of a color basecoat; applying to the layer of color basecoat composition before the basecoat is fully cured a clearcoat com- position; and subsequently simultaneously curing the basecoat composition and clearcoat composition to form a coating; the improvements used therewith comprise the use of a clear coating composition com- prising about 40-80% by weight of a binder of an acrylosilane polymer in a liq- uid carrier and exposing the clearcoat of the substrate after curing to an artificial ultraviolet light source to increase the re- sistance of the coating to water spotting and acid etching. Topcoat Composition U.S. Patent 5,532,313. July 2, 1996 E. K6nig eta/., assignors to Bayer AG, Leverkusen, Germany A heat-curable coating composition con- mining a binder consisting essentially of a prepolymer, which has butanone oxime- blocked isocyanate groups prepared from a (cyclo)aliphatic polyisocyanate and an or- ganic polyhydroxyl component in which 50--90% of the hydroxyl equivalents of the polyisocyanate are from a polyester polyol, and 10-50% of the hydroxyl equivalents of the polyhydroxy are from a polyacrylate ENVIRONMENTAL COMPLIANCE GOT YOU DOWN? polyol; and a cycloaliphatic polyamine having at least two primary amino groups. Composition for Treating Copper U.S. Patent 5,532,094. July 2, 1996 M. Arimura et a/., assignors to MEC Co, Ltd., Amagasaki, Japan A method for roughening surfaces of cop- per or copper alloy to provide excellent ad- hesion of a coated or laminated layer thereon, comprising treating with an aqueous solution comprising an azole compound, a copper compound dissolvable in the solution, an or- ganic or inoganic acid, and a halogen ion. Cleaning Apparatus U.S. Patent 5,533,538. July 9, 1996 M.C. Marshal/, assignor to Southwest Research Institute, San Antonio, Texas An apparatus for cleaning articles utilizing supercritical and near supercritical fluids. Tin Coating Composition U.S. Patent 5,534,048. July 9, 1996 J.H. Dailey et al., assignors to Novamax Technologies Inc., Ontario, Canada Brooktronics Engineering Corp. manufactures environmentally compliant brush plating solutions for the airline/aerospace industries, Brooktronics has the solution for you if you currently use or are seeking replacements for: • Cadmium • Hexavalent Chromium • Cyanide based plating solutions Call today for free literature describing how Brooktronics can solve your environmental problems. Brooktronics Engineering Corporation 28231 Avenue Crocker, Suite 70 Valencia, CA 91355 (805) 294-1195 Fax: (805) 294-9032 (800) 394-0922 Innovators of brush plaling products since 1960. ~SONIC EOUS NERS bine the vith uperior performance while eliminating CFC's from the workplace. l=i Sonicor manufactures a wide range of equipment for all applications. SONICOR IHHERSIBLES - When the use of transducerized tanks is not practical. • Lead Zirconate-Titanate Sandwich Transducers • Stainless Steel Construction • Sweep or Resonant Frequency Generator Circle 095 on reader information card Circle 079 on reader information card METAL FINISHING • MARCH 1997 95
