- Email: [email protected]
Microetching of printed wiring boards
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U.S. Patent 5,855,765. Jan. 5, 1999 W.A. Morgan, assignor to Metal Recovery Industries Inc., East Chicago, Ind.
A process of removing zinc from galvanized steel comprising immersing in an aqueous electrolyte containing sodUum or potassium hydroxide; galvanically corroding the zinc in a reaction in which there is an anode and a cathode, wherein the zinc serves as the anode; and conveying the galvanized steel through the electrolyte with a conveyor, which is electrically isolated from ground and serves as a cathode for the galvanic corrosion.
U.S. Patent 5,855,805. Jan. 5, 1999 N.D. Arabinick, assignor to FMC Corp., Philadelphia
A microetchant and cleaning solution for copper-clad substrates in the production of printed wiring boards, said solution comprising an alkali metal persulfate; a metal salt component selected from the group consisting ofalkali metal sulfates and mixtures of alkali metal sulfates and alkali metal bisulfates; and sulfuric acid. TOPCOAnN8 COIIPOSI1IOIlII U.S. Patent 5,855,960. Jan. 5,1999
K. Ohnishi et al., assignors to
Kansai Paint Co. Ltd., Hyogo-ken, Japan
A film-forming process, which comprises coating a topcoating composition onto a substrate to form a film, said topcoating composition having been prepared by incorporating an organosilicate. IWO-COIIPOIUIn' coan...
COIIPOSITIOII U.S. Patent 5,855,961. Jan. 5, 1999
M. Haenel et al., assignors to Vianova Resins GmbH, Mainz· Kastel, Germany
A process for the production of an aqueous coating composition, which is crosslinkable at room temperature, comprising one or more resins having amino-reae-
• Choice Of Ice Storage Or New Conventional Chiller Design • 0.5 to 200 Tons Capacity • Air or Water Cooled • 100% Process Water Recovery • Payback from Reduced Operating Costs Used forover25 Years In PCB, AnodizlngIPlatlng, Batchand otherManufacturingCoolingApplications
APPLIED THERMAL TECHNOLOGIES, INC. HYDRO-MISER DIVISION P.O. Box 1900, San Marcos, CA 92079·1900 Ph: 800/736-5083 or 760/744-5083. Fax: 760/744-5031 [email protected] Webpage: www.hydromiser.com
Circle 020 on reader Information card October 1999
Circle 005 on reader Information card 73
MICIIOftCIIIN8 Of PlUIITID
.-VAllIUD SIBL
. . . . . . .AIIDa
U.S. Patent 5,855,765. Jan. 5, 1999 W.A. Morgan, assignor to Metal Recovery Industries Inc., East Chicago, Ind.
A process of removing zinc from galvanized steel comprising immersing in an aqueous electrolyte containing sodUum or potassium hydroxide; galvanically corroding the zinc in a reaction in which there is an anode and a cathode, wherein the zinc serves as the anode; and conveying the galvanized steel through the electrolyte with a conveyor, which is electrically isolated from ground and serves as a cathode for the galvanic corrosion.
U.S. Patent 5,855,805. Jan. 5, 1999 N.D. Arabinick, assignor to FMC Corp., Philadelphia
A microetchant and cleaning solution for copper-clad substrates in the production of printed wiring boards, said solution comprising an alkali metal persulfate; a metal salt component selected from the group consisting ofalkali metal sulfates and mixtures of alkali metal sulfates and alkali metal bisulfates; and sulfuric acid. TOPCOAnN8 COIIPOSI1IOIlII U.S. Patent 5,855,960. Jan. 5,1999
K. Ohnishi et al., assignors to
Kansai Paint Co. Ltd., Hyogo-ken, Japan
A film-forming process, which comprises coating a topcoating composition onto a substrate to form a film, said topcoating composition having been prepared by incorporating an organosilicate. IWO-COIIPOIUIn' coan...
COIIPOSITIOII U.S. Patent 5,855,961. Jan. 5, 1999
M. Haenel et al., assignors to Vianova Resins GmbH, Mainz· Kastel, Germany
A process for the production of an aqueous coating composition, which is crosslinkable at room temperature, comprising one or more resins having amino-reae-
• Choice Of Ice Storage Or New Conventional Chiller Design • 0.5 to 200 Tons Capacity • Air or Water Cooled • 100% Process Water Recovery • Payback from Reduced Operating Costs Used forover25 Years In PCB, AnodizlngIPlatlng, Batchand otherManufacturingCoolingApplications
APPLIED THERMAL TECHNOLOGIES, INC. HYDRO-MISER DIVISION P.O. Box 1900, San Marcos, CA 92079·1900 Ph: 800/736-5083 or 760/744-5083. Fax: 760/744-5031 [email protected] Webpage: www.hydromiser.com
Circle 020 on reader Information card October 1999
Circle 005 on reader Information card 73