to the tetrafunctional silane of from O.l:l to 51; and curing the coating composition to produce a substantially transparent, abra- sion-resistant coating on the sub- strate.

HOT-DIP ZINC FREE OF DROSS

PICK-UP DEFECTS

U.S. Patent 5,958,518. Sept. 28, 1999 P.J. Sippola, Espoo, Finland

A method and apparatus for hot- dip galvanizing that eliminates substantially all suspended dross particles generated by galvaniz- ing a metal strip to be coated com- prising inserting the metal strip into a bath containing galvaniz- ing materials; and adhering sub- stantially all the dross and the metal strip by forcing substan-

tially perpendicular zinc flows against the strip using a plurality of nozzles on each side of the strip wherein the zinc flows agitate the entire zinc bath and maintain chemical homogeneity through- out the bath.

WATER-DISPERSIBLE POLYESTER

COAllNG

U.S. Patent 5,958,601. Sept. 28, 1999 R.K. Salsman, assignor to Seydel Companies Inc., Atlanta

An article of manufacture com- prising a substrate coated with a water-dispersible and hydropho- bic polyester coating composition comprising a reaction product of 30 to 70% by weight of a tereph- thalate polymer; 5 to 40% of a hyroxy-functional compound hav-

Products For Metal Finishers SYBRON CHEMICALS INC.

Ion Exchange Membranes m Electrocoating - Anionic and Cationic Paint Baths b Metal Recovery - Metal Finishing Baths b Recovery of Pickle Liquors B Production of Organic Acids ) EDI Systems

Ion Exchange Resin m Precious Metal Recovery . Heavy Metal Recovery l Metal recovery from Acidic Solutions l Deionization, Dealkalization, Softening

Ion Exchange Cartridges l Inexpensive cartridges for quick determination of

application feasibility

For complete information on these and other products contact us at:

Sybron Chemicals Inc. Pwification Through Innovation Birmingham Road, Birmingham, NJ 08011 Phone: (609) 893-l 100 / 800-678-0020 Fax: (609) 894-8641 Web: www.sybronchemicals.com

Circle 078 on reader information card

ing at least two hydroxyl groups; 1 to 20% of a carboxy-functional compound having at least two car- boxy1 groups; and 10 to 60% of a hydrophobic compound selected from the group consisting of Cs- C,, straight chain or branched fatty acid or triglycerides thereof.

ELECTROLYTIC CLEANING PROCESS

U.S. Patent 5,958,604. Sept. 28, 1999 V.M. Riabkov, assignors to Metal Technology Inc., Mandeville, La.

An electrolytic process for metal coating the precleaned surface of a workpiece of an electrically con- ducting material, which process comprises providing an electro- lytic cell with a cathode compris- ing the workpiece and an anode comprising the metal for metal

Circle 033 on reader information card

106 Metal Finishing