Coating Composition U.S. Patent 5,739,216. Apr. 14, 1998 V. Duecoffre et a/., assignors to Herberts GmhH, Wuppeda/, Germany

A binder composition suitable for coat- ing compositions containing 25 to 75% by weight of the reaction product of one or more carboxy-functionalized (methlacrylic copolymers containing urethane groups and/or of one or more carboxy-functional- ized polyesters containing urethane groups; 25 to 75% of one or more epoxy-funrtion- alized crosslinking agents; 0 to 60% of one or more polyols having at least two hy- droxyl functions per molecule; 0 to 20% of one or more melamine resins; 0 to 40% of one or more free or capped polyisocyan- ates, together with 0 to 10% of one or more catalysts.

Metal Surface Treatment Agent U.S. Patent 5,739,231. Apr. 14, 1998 Y lmai et al., assignors to GC Corp., Tokyo

A metal surface treatment agent Icorn- prising 0.001 to 10% by weight of a poly- merizable monomer containing a thiophos- phoric acid chloride group therein and 0.001 to IO% by weight of a polymerizable

monomer containing a phosphoric acid es- ter group therein dissolved in an organic solvent, wherein all percentages are based on weight of organic solvent.

Water-Based Primer Compositions U.S. Patent 5,739,232. Apr. 14, 1998 TH. Haze// et al., ass/gnors to Sartomer Co., Exton, Pa.

A curable composition having improved substrate adhesion comprising a water -sol- uble compound suitable for use as a sub- strate adhesive selected from the group consisting of acrylic oilgomer; acid in an amount effective to promote cross-linking resulting in improved adhesion to sub- strates; and a cure initiator.

Preparation of Cyanate Ester Polymers U.S. Patent 5,739,268. Apr. 14, 1998 C.I. Van Ast, assignor to Hughes Aircraft Los Angeles, Calif.

A method for preparing the surface of a cyanate ester polymer or cyanate ester polymer composite for plating with metal consisting essentially of placing the surface

Ibust NIAPROOF@ Surfactants in Acid, Alkali, Salts & More

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in contact with a preheated solution com- prising at least one primary amine; rinsing with water; and drying.

Rotary Regenerative Heat Exchanger U.S. Patent 5,740,856. Apr. 21, 1998 K. E. /Titter assignor to ABB Air Preheater Inc., Wellsville, N. Y

A heat transfer element basket assembly for a rotary regenerative heat exchanger comprising a basket framework including first and second end plates disposed at in- ner and outer ends of the basket and means attaching the first and second end plates in spaced relationship; a first set of heat ex- change plate support bars extending be- tween the first and second end plates adja- cent the bottom surface; a second set of heat exchange plate support bars extending between the first and second end plates at a position intermediate the top and bottom surfaces; a first set of heat exchange plates juxtaposed in a stacked array between the first and second end plates and supported on the first set of heat exchange plate sup- port bars; and a second set of heat ex- change plates juxtaposed in a stacked array

Pre-Engineered

Pre-Assembled

Compact Design

Low Decibel Rating

I

Fast Color Change

Meets NFPA 33

l Automatic Powder Systems l Walk-In Powder Systems l Manual Powder Systems l Support Equipment

Circle 073 on reader information card Circle 030 on reader information card

102 METAL FINISHING l SEPTEMBER 1998