paint recovering method
TRANSCRIPT
to Advanced Micro Devices Inc.,Sunnyvale, Calif.
A method for electroplating a substrate comprising immersing acontact for positioning the substrate into an electrolyte solution;applying a first current amount tothe contact for plating only thecontact with a metal layer; positioning the substrate with theplated contact in the electrolytesolution; and applying a secondcurrent amount to the substratefor forming a metal layer on thesubstrate.
PIIOCas ......ITALUZlN8IUCTIIOPOUSHIN8 BATHSU.S. Patent 5,882,500. Mar. 16, 1999R. Abedian et al., assignors toPoligrat GmbH, Munich, Germany
A process for removing Fe(lI!)from a liquid composition comprising phosphoric acid, sulfuricacid, and Fe(lII) ions comprisingproviding an electrolysis cell having an anodic region and a cathodic region separated from one
MEXICO
another by a partition formed of amaterial with a pore size between0.5 and 10 j.Lm and capable offorming in situ a metal ion-impeding diaphragm when a direct current is applied across the cell;feeding the liquid composition tothe cathodic region; applying direct current across the cellthereby reducing the Fe(lIl) ionsto Fe(l!) ions and forming in thecathodic region a precipitate ofFeS04; and removing the precipitate from the cathodic region.
APPARATUS POR IIIIIOVlN8MITAL COMPOUNDS ....WAS'nWATIIIU.S. Patent 5,882,513. Mar. 16, 1999S.M. Stevenson, McMurray, Pa,
An apparatus for removing metalcompounds from wastewater comprising means for simultaneouslyadjusting the pH, aerating, andagitating the wastewater all integrated into a single reaction tank;means for adding a polymeric flocculating agent to the water; ro-
tary drum thickener means forseparating supernate water; beltfilter press means for removingadditional water; means fortransporting the additional waterto a polishing pond; and means forremoving water from the polishing pond.
PAIlII' IIIICOVIIII_ MITHODU.S. Patent 5,882,522. Mar. 16, 1999K. Matsumoto et al., assignors toAsahi Kasei Kogyo KK and ShintoPaint Co. Ltd., both of Japan
A method. for recovering paintscomprising placing a receiver ofatleast one of an ultrafiltrationmembrane and a microfiltrationmembrane in a spray coatingbooth for receiving oversprayedpaint and passing at least one ofwater and organic solventthrough the membrane from oneside thereof to the other sidethereof, and receiving and recovering the oversprayed paint at theother side of the membrane.
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Modern ElectroplatingIry F. Lowenheim
801 pages $180.00
This is the third edition of this valuable textbook. Numerousauthorities have contributed summaries on principles of plating andmetal finishin~. controL maintenance, deposit properties, and troubleshootin~. A worthwhile reference.
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