and containing a hydroxy-terminated polyalkadienediol having an average de- gree of polymerization from 5 to 50, a hydrogenated product of said polyalkadi- enediol or a mixture thereof in a propor- tion from 1 to 30% by weight of the entire polyester-forming reactants, a crosslinker for the resin; a neutralizing base; and an aqueous medium, the poly- ester resin and crosslinker being dis- persed in the aqueous medium.

Extruded Aluminum Conveyor U.S. Patent 5598,784. Feb. 4, i997 R. Kubsik et al, ess@~rs to Jervis B. Webb Co., Farmington Hills, Mich.

A track segment for a conveyor system, comprising a longitudinal track body hav- ing a first side; a second side; and a back side; wherein the first and second sides extend outwardly in the same direction from the back side: and attachment means disposed on the back side extending oppo- sitely from the first and second sides, for attaching said track body to a support struc- ture; wherein the attachment is offset from the centerline between the first and second sides.

Parts Washer U.S. Pafent5,598,861. Feb. 4, 1997 Ll. Danowski and M. R. Dvorak, assignors to Safety-Kleen Corp., E/gin, 111.

A parts washer comprising a parts-receiv- ing receptacle positionable atop a reservoir for cleaning liquid, a drain opening formed in a part of the receptacle, a receptacle posi- tioner affixed to a potion of the receptacle and engageable with a portion of the reser- voir, and a drain flow control assembly.

Spray Paint Optimization System U.S. Patent 5,598,972. Feb. 4, 1979 R.J. /kin, /I et al, assignors to Universi& of Northern lowa Foundation, Cedar Falls, lowa

In a spray painting system having a nozzle from which paint is sprayed onto a surface, an optical spray paint optimization system comprising a laser that generates an emitted beam; a beam splitter that splits the emitted beam into a reference beam and a gauge beam; and an adjustable mirror that reflects the gauge beam so that the gauge beam and the reference beam converge at a conver- gence point positioned at a selected distance from the nozzle of the spray painting system.

Chemical Polishing of Stainless Steel U.S. Patent 5,599,399. Feb. 4, 1997 F. Dujardin et al, assignors fo Sdvay et Cie (S’ociete Anonyme), Brussels, Belgium

A process for polishing an austenitic stainless steel surface comprising bring- ing the surface into contact with a chem- ical polishing bath for polishing at a slow rate of reaction, said bath comprising in an aqueous solution a mixture of hydro- chloric acid, nitric acid, and phosphoric acid; a brightening agent chosen from substituted and unsubstituted hydroxy- benzoic acids. and at least one quaternary ammonium salt comprising at least one alkyl radical containing four carbon at- oms, characterized in that they contain, per liter of the aqueous solution, between 0.005 and 1 g of quaternary ammonium salt, and between 0.001 and 0.5 moles of an additive chosen from perchloric acid and water-soluble salts of perchloric acid, said bath being at a working tem- perature of between 20 and 50°C in use, and in contact with the stainless steel surface for a period of 5 to 12 hours.

RECYCLE + MlNMlZE + EVAPORATE WSEWITErW (_ WiENERANT

WBTE) w-) = 0 DISCHARGE

Recycling rinsewaters with Ion Exchange has long been known to reduce waste discharge. Conventional Ion Exchange systems, however, produce large volumes of regenerant waste, making evaporation expensive. The 786 series Rinsewater Recycling Systems from Hydromatix reduce regenerant waste by 90%, making ZERO Discharge feasible. For brochure or technical assistance call:

(800)221-5152 FAX:(969)464-0642

Internet: wwwhydromatkcom E-Mail: zerodiicharge@hydromatix.com

Circle 042 on reader information card

Modern Electroplating

ly F. Lowenheim 801 pages $170.00

This is the thiid edition of this valuable textbook. Numerous authorities have contributed sum- maries on principles of plating and metal finishing, control, main- tenance, deposit properties, and troubleshooting. A worthwhile ref- erence.

Send Orders to: MIX4L FIMSHlNG, 66owhitePlainsRcI.

Tarrytown, NY 10591-5153 For faster senice,

caU (914) 333-2578 or FAX you* order to (914) 3332570

All book orders must be prepaid. Please include $5.00 shipping and handling for delivery of each book via UPS in the U.S., $10.00 for each book shipped express to Cam&; and $20.00 for each book shipped express to all other countries.

112 METAL FINISHING ?? NOVEMBER 1997