aluminum substrate, comprising a basic double salt including aluminum ions, at least one salt selected from the group con- sisting of sulfates of alkali metal ions or alkaline earth metal ions, at least one or- ganic compound selected from the group consisting of sodium mercaptobenzothiaz- ole. oxine, and sodium benzoate, wherein the coating has a thickness of not less than 0. I pm; said conversion coating being pre- pared from an aluminum treating aqueous solution comprising sulfates of the alkali metal ions or alkaline earth metal ions at a concentration of 0.001 to 5 M, and the organic compound at a concentration of 0.001 to 5 M.

Composition for Electroless Metallization U.S. Patent 5,500,315. March 19, 1996 J.M. Calvei? et al, assignors fo Rohm & Haas Co., P hliadelphia

.4n article of manufacture comprising an electroless metal deposit in an image pat- tern on a substrate, said substrate, at least where coated with the metal deposit, hav-

ing bonded to its surface one or more mul- tidentate chemical groups ligated by coor- dination bonding other than by electrostatic interaction with a substantially tin-free, electroless metallization catalyst.

Autodeposition Bath U.S. Patent 5,500,460. March 19, 1996 6. M. Ahmed et al, assignors to He&e/ Corp., Plymouth Meeting, Pa.

An autodeposition bath composition suitable for depositing a coating on an ac- tive metal surface of solid objects having surfaces constituted predominately of ac- tive metals contacted with the composition, consisting essentially of a mixture of I to 20% by weight of an epoxy resin compo- nent; an emulsifying component consisting essentially of anionic surfactant; 0.1 to 20% by weight of a crosslinking compo- nent; an accelerator in sufficient amount to cause the dissolution of active metals from solid objects; and, optionally, pigments, dyes, or other chemically stable colorant materials; finely divided solids suitable as

High Efficiency Dry Scrubber Meets Strict Regulations for Hexavalent Chrome Mist Removal I Low maintenance I Corrosion resistant I500 to 65,000 cfm I Retrofit existing systems ??Horizontal &vertical

configurations I Single source capability

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fillers in the coatings to be formed from the composition: and water to form the balance of the composition.

Can Coating US. Patent 5,500,463. March 19, 1996 S. Nishimura ef al., assignors to Nippon Paint Co ltd., Osaka, Japan

An aqueous resin composition compris- ing a base material comprising an acrylic resin and an epoxy resin wherein the acrylic resin has an acid value greater than 0 to 30, and wherein the epoxy resin is partially reacted to the acrylic resin.

Cleaning Apparatus U.S. fafent 5,501,240. March 26, 1996 T. Dohku et al, assignors to Hitachi Zosen Corp., Osaka, Japan

A cleaning apparatus comprising a first tank having a bubbling device disposed in the bottom, and a spray nozzle located above; a second tank having an ultrasonic

Sonicor precision cleaning systems combine the latest in ultrasonic cleaning technology with

performance while eliminating CFC’s from the workplace.

Sonicor manufactures a wide range of equipment for all applications. SONICOR IMMERSIBLES - When the use of transducerized tanks is not practical.

Lead Zirconate-Titanate Sandwich Transducers Stainless Steel Construction Sweep or Resonant Frequency Generator

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METAL FINISHING . NOVEMBER 1996