Plated steel sheet

Plasma Pretreatment for Plastics U.S. Patent 5,419,&l. May 34 1995 E Verzaro, assignor to Elf Aquifaine Production, Paris A process for improving the adhesion of paint to a shaped object, at least the outer part of which is made of a blend of polyamide and polyolefin, the surface of the outer part having insufficient polarity for adhesion of paint, which comprises providing a reactive gas flow of cold plasma produced by generating an electrical discharge in a gas, contacting the shaped object with the reactive gas flow at a pressure between 1 and 10,000 Pa, and then contacting with oxygen for a time sufficient to oxidize the surface.

Ammonia-Free Deposition of Copper by Disproportionation

ous solution, adding to the cupric ions an ammonia-free reducer to rapidly reduce the cupric ions to cuprous hydroxide, and thereafter affecting disproportionation of the resultant cuprous hydroxide to bring about the deposition of metallic copper principally on the surface.

Spray Application of Waterborne Coatings

Masking Composition U.S. Patent 5,420,015. May 30, 1995 D.W. Wuerch,assignor to Minnesota Mining & Mfg. Co., St. Paul, Minn. A coatable masking composition suitable for application to a surface to protect same from paint overspray, said composition comprising a surfactant; l-10 weight percent of a plasticizer; l-20 weight percent of a nonvolatile polyhydroxy organic component selected from the group consisting of glucose, maltose, fructose, sucrose, sorbitol, and mixtures thereof; and a thickener.

U.S. Patent 5,419,926. May 30, 1995

Chrome Plate Remover

J. So&s, assignor to Lilly London Inc., lndianapolis

U.S. Patent 5,419,046. May 34 R.A. Mayo, Brookhaven, Pa.

A process for the deposition of metallic copper on a catalytically activated surface comprising providing cupric ions in aque-

AFFORDABLE GUARANTEED and Chemical

(0u

4 Clarikation 4 Ionexchange 4 Microfiltration 4 Evaporation b Oil Separation Recovery

TREATMENT PRODUCTS CORPORATION

U.S. Patent 5,421,96t?. June 6, 1995 S. Ando et al., assignors to NKK Corp., Tokyo

A method of manufacturing a plated steel sheet with a zinc-chromium composite plating, comprising adding a total of 0.01 to 300 g/L of at least one type of salt

SERFILCO recognizes your need for continuous trouble-free performance in your waste treatment system and, therefore, brings you products which have been designed and manufactured with state-of-the-art technology.

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Call or FAX us with your waste treat problems.. our Sales Application Engineers can help.

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Phone (610) 384-6279

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Circle 077 on reader information card

METAL FINISHING

Plated Steel Sheet

Water

Include:

Chemical Treatment Filtration Media Filtration Ultrafdtration Batch Treatment 4 Aqueous Cleaner

T.P.C.

A process for spraying a waterborne polymeric composition having reduced water content, which comprises forming a liquid mixture in a closed system, said liquid mixture containing a waterborne polymeric composition and a compressed fluid.

Recovery

Process Technologies 4

U.S. Pafenf 5,419,487. May 34 1995 K.A. Nielsen et al., assignors to Union Carbide Chemicals d Plastics TechnologyCorp., Danbury Corm.

& RELIABLE PERFORMANCE

Vo one technology is the correct solution for all pplications. That is why we offer many different unit >perat.ions and engineer them into a treatment solution hat is right for your individual needs.

b 4 4 b

1995

A new and improved chrome plate remover device comprising a support frame;

Engineered Systems for Wastewater Treatment, Ikeatment

an angled peeling blade removably mounted within the frame; and means adjustably mounted with the frame to support the end of a tubular workpiece in vertically adjustable rotatable engagement with the peeling blade.

. FEBRUARY

1996

.

LTD.

1777 Shermer Reed 705-550-1777 Northbrook,IL 500624360 U.S.A. 500-323-5431 Telex: 289557 SERFC UR FAX: 708-559-1995 Circle 067 on reader information card

113

having a pH buffering action in a pH range of 2-6 in a bath containing only zinc to an acidic zinc-chromium composite plating bath containing zinc ions and trivalent chromium ions to prepare a plating bath, said salt having a pH buffering action suppressing an increase in pH at the cathode boundary, thereby suppressing the formation of hydroxide; and electroplating film on a steel sheet using the resultant plating bath.

Metallization of Nonconductive Substrates U.S.Patent 5,421,989. June 6, 1995 L. Stamp et al, assignors to Atokxh

Deutschland

G&H, Germany

A process for applying a principal metal coating to a nonconductive substrate without employing an electroless coating, comprising contacting with a suspension comprising a noble metal colloid suspended in a polymer matrix to obtain a coated substrate; removing at least part or substantially all of the polymer matrix from the coated substrate with a solution of a chalcogen that does not form chalcogenides of the noble metal; and electrolytically coat-

ing the substrate obtained with a solution of the principal metal coating.

Zinc or Zinc Alloy Plating Bath U.S. Patent 5,421,990. June 6, 1995 E. Hahn et al, assignors toBASF AG, Ludwigshaien,

to 100 g/L of platinum in the form of Pt(OH), complex ion and at least one of tin, zinc, and palladium in an amount of 1 mg/L or more.

Photoresist Waste Treatment

Germany

A process for the production of shiny shaped articles coated with zinc or a zinc alloy by electrodeposition from acidic aqueous electrolytic baths, which contain as essential components one or more zinc salts and, in the case of the alloy, one or more sakof an alloy metal, one or more conducting salts, one or more surfactants, and one or more brighteners.

Platinum Alloy Electrodeposition Bath U.S. Patent $421,991. June 6, 1995 S. Yafita, assignor to E/ectfop/ating Engineers of Japan ltd., Japan

In a process for manufacturing a platinum alloy product by electrodepositing platinum alloys upon the surface of an object, the improvement which comprises using an electrodeposition bath comprising 2

U.S. Patent 5,422,032.June 6, 1995 J.A. Brown, assignor fo Wdron Ltd. Partnership, Carol Sheam, 111.

A method and composition for waste treatment of organic strippers containing metals.

Electroless Plating Process U.S. Patent 5,422,142. June 6, 1995 C-H. Hsu, assignor to E./. Du font de Nemours and Co., Wilmington, De/.

In a process for electrolessly plating aramid fibrids with a durable metal coating comprising the steps of contacting the fibrids to be plated with a sensitizing solution, rinsing the fibrids, and immersing the fibrids in a solution of metal cations to be plated; the improvement, which comprises contacting the aramid fibrids with an aqueous solution consisting essentially of 80 to 90% sulfuric acid for 2 to 60 set at a temperature in the range from 10 to 1OO’C;

FOR METALS RECOVERY choose

IONAC” ION EXCHANGE

RESINS

Sybron Chemicals Inc. manufactures a wide selection of selective and standard ion exchange resins for the metal treating industry. A sampling of these products are listed below.

Selective SR-3 Au, Ag, Pt Recovery SR-4 Hg Removal, and Ag Recovery SR-5 Cu>Pb>Ni Selective Removal SR-8 Chelated Cu Recovery and Removal SR-9 Complexed metal removal SR-10 Pb Removal from Potable Water SR-12 Fe, Zn, Co Recovery from acidic solutions Standard NM60 Mixed Bed for DI water production C-267 Cu, Pb, Ni Recovery from DI Rinses For complete information on these and other ion exchange resins contact us at:

SYBRON CHEMICALS INC. Purification Through lnnova tion Birmingham Road, Birmingham, NJ 08011 600-678-0020 (Toll-Free) 609-893-l 100 (Telephone) 609-894-8641 (Telefax) visitUsat 600th #35 at AESF Week Circle 103 on reader information card 114

QUALlTYElE~TROPlATI EQUIPMEN Engineered Iyrtemrand(omponentr forMetalFinishing

PALSERVICE

OUALITY

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INCORPORATED EOUIPMENT

5623 West Ledbetter, Dallas, Texas 75236 Phone: 214-298-9898 Fax 214-298-8474 ??

800-926-6725 Circle 060 on reader information card METAL

FINISHING

.

FEBRUARY

1996