paint residue comprising contacting with a solvent mixture consisting essentially of 15 to 35% by weight of one or more glycol ethers and 65 to 85% of o~e or more aliphatic ketones.
Process for Imparting a Blue Color to Zinc/Aluminum Alloy U.S. Patent 5,700,334. Dec. 23, 1977 H, Ishii and Z Ogino, assignors to Henket Corp,, Plymouth Meeting, Pa. A process for imparting a bright blue color to a zinc/aluminum alloy surface that
contains 0.1 to 60% aluminum by treatment of the surface with an aqueous liquid treatment composition that has a pH of 3.5 to 6, tha~ does no1 comain chromium, arid that contains a molybdenum compound content of 0.2 to 3.0% by weight calculated as molybdenum an a fluoride content of 0.1 to 2.0% by weight calculated as fluorine.
M e t h o d o f T r e a t i n g C o p p e r Foil u.s. Patent 5,700,362. Dec. 23, 1977 M. Yano and M. Takami, assignors to Fukuda Metal Foil and Powder Co. Ltd., Kyoto, Japan
Electrodeposition: The Materials Science o f Coatings and Substrates by J, W. Dini
367 pages
$78.00
The first c o m p r e h e n s i v e b o o k o n materials science a n d its relationship to e t e c t r o d e p o s i t i o n a n d o t h e r coating technologies. The a u t h o r d e m o n s t r a t e s h o w the principles of materials science c a n be u s e d to e x p l a i n the structure of electrodeposits a n d s h o w s h o w these structures i n f l u e n c e deposit properties. Topics c o v e r e d i n c l u d e h y d r o g e n embrittlement, a d h e s i o n , diffusion, porosity, stress additives, corrosion, a n d wear. Send Orders to: METAL F I N I S H I N G 660 White Plains Rd., Tarrytown, NY 10591-5153 For faster service, call (914) 333-2578 or FAX y o u r order to (914) 333-2570 All book (>~ders must be prepaid Please include $5.00 shipping and handling for delivery o f each Nu>k via UPS in the O.S., $10.00 &)r each txx)k s~ipped express ~<~Canada; a n d $20 00 &~r each I×mk shipped express t(i all
A method for surface treating copper foil having a shiny side for printed circuits comprising a step of forming a first layer of a zir~c a}loy of zinc and r~icke} and cobalt by electroplating the shiny side surface of the copper foil, an a step of forming a second layer by immersing the first layer in an aqueous solution bath containing benzotriazole derivative and a phosphorus compounds,
Cleaning an Coating Process U.S. Patent 5,700,366. Dec. 23, 1977 VL. Steblianko and VM. Riabkov, assignors to Metal Technology Inc., Mandeville, La. An electrolytic process for simultaneously cleaning and metal coating the surface of a workpiece of an electrically conducting material, which comprises providing an electrolyric cell with a cathode comprising the surface of the workpiece and an anode comprising the metal for metal coating of the surface of the workpiece.
Etching Solution for Copper or Copper Alloy U.S. Patent 5,700,389. Dec. 23, 1977 T. Nakagawa, assignor to MEC Co. Ltd., Amagasaki, Japan An etching soiutlon for copper or copper alloys comprising sulfuric acid; a persulfate; at lease one compound selected from the group consisting of imidazole, imidazole derivatives, or pyridine derivatives; water; and amidosulfuric acid or an aliphatic sulfonic acid.
Rotary Valve for Regenerative Thermal Oxidizer U.S. Patent 5,700,433. Dec. 23, 1977 G. Somary, assignor to Eisenmann Corp., Crystal Lake, lit.
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A system for use in a regenerative thermal oxidizer comprising a rotatable valve body between and relative to an upper surface and a fixed lower surface of the regenerative thermal oxidizer so as to direct gas flow in a substantially leak-free manner between the lower surface, the valve body, and the upper surface.
Optimizing Gray Primer in Multilayer Coatings U.S. Patent 5,700,515. Dec. 23, 1977 A.B.J. Rodr~gues,assignor to E.L du Pont de Nemours and Ca., Wilmington, DeL A method for applying multiple layers of coating compositions on a previously painted snbstrate by first applying a layer of a coating of a primer composition and then applying over the primer coating a topcoating that matches the color of the painted substrate at less than complete hiding to achieve a color match of the topcoatMETAL FINISHING • JUNE 1998
ing and the previously painted substrate, which comprises applying a gray or white primer composition at complete hiding having a reflectance in its dried state essentially the same as the topcoating measured at the wave length of minimum absorption of the topcoating.
Method for Treating Metal Surfaces U.S. PatentS,700,523. Dec. 23, t977 Aft. Petrole and J.B. River& assignors to Bulk Chemicals Inc., Leesport, Pa. A method for treating a metal surface to improve corrosion resistance and paint adhesion comprising contacting with a first bath, having a pH of at least about 8 and comprising an aqueous silicate solution consisting of water and a compound selected from the group consisting of sodium silicate and potassium silicate in a concentration of from 0.1 to 100 g/L to form a silicate-coated metal surface; contacting the silicate-coated metal surface with a second bath, comprising an aqueous organofunctional silane solution consisting of water and an aminopropyl silane in a concentration of from about 0.1 to 100 g/L, to form a silane-coated metal surface; and contacting the silane-coated metal surface with a third bath comprising a chrome-free pretreatment consisting of the reaction product of a polymer system having hyroxyl and carboxylic functional groups and a compound of a group IV-B element.
comprises 1 to 30 % by weight of a prepolymer, as an in-polymerizable, thickener; 20 to 80% or multifunctional acrylates, multifunctional methacrylates, or mixtures thereof; 5 to 75% of a thinner; 0.01 to 10 % of an ultraviolet initiator; 0 to 20% of customary additives; and 1 to 10% of a sulfur-containing regulator having at least three thiol groups.
Aqueous Coating Composition u.s. Patent 5,700,862. Dec. 23, 1977 K. Sho et aL, assignors to Nippon Paint Co. Ltd., Osaka, Japan
An aqueous coating composition comprising 10 to 95% by weight of a filmforming polymer prepared by neutralizing at least a part of acid groups contained in a copolymer; and 5 to 90% of an aqueous dispersion of carboxyl group-containing acrylic resin particles.
Cationic Flocculants U.S. Patent 5,700,893. Dec. 23, 1977 L.L. Kuo et aL, assignors to BetzDearbom Inc., Trevose, Pa. A water-soluble cationic copolymer comprising a reaction product of N-vinylamide.
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Chromated Metal Sheet u.s. Patent 5,700,561. Dec. 23, 1977 J. Mano et at., assignors to Kawasaki Steel Corp., Japan A chromated metal sheet that has high corrosion resistance along with improved lubricity and electrical conductivity comprising a chromate layer on at least one surface of a metal substrate or a plated metal substrate, wherein the chromate layer has a chromium deposit in the range of 10 to 200 mg/m 2 per surface in terms of metallic Cr, and the chromate layer contains silica in a weight ratio of 0.1 to 6.0 of SiO2 to Cr and lubricating particles selected from the group consisting of graphite, MoS2, BN, calcium stearate, and an organic lubricating substance, present in a weight ratio of 0.1 to 100 of the lubricating particles to Cr, and wherein the coverage of the surface of said metal substrate with said lubricating particles is less than 50%.
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UV-Curable Scratch-Resistant Varnish u.s. Patent 5,700,576. Dec. 23, 1977 M. Brehm et al., assignors to Roehm GmbH Chemi;~che Fabrik, Darmstadt, Germany A coating agent for producing scratchresistant coatings on plastic articles, which METAL FINISHING
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