plex with the metal ions, the complexing agent being present in greater than equimo- lar amount with respect to metal ion con- centration, the polyamine being added in an amount from 0.1 to 0.5 times the metal concentration, the amount of polyamine being effective to release the metal ions from the metal complex; and contacting the aqueous solution with a cation exchanger.

Water-Based Coating Composition U.S. Patent 5500,246. March 19, 1996 K. Morizono and T: Harada, bofh c/o Mitsui Pefrochemical lndusfries Ltd., Chiba, Japan

A resin composition for water-based coating, which is a resin mixture consisting essentially of a reaction product of an aro- matic polyol resin and a carboxyl group containing acrylic resin; an aromatic epoxy resin; and an aromatic polyol resin.

Substrate-Reactive Coating Composition U.S. Patent 5,500,253. March 19, 1996 ML Sanduja et a/., assignors to James A. Bolton, Sfrafford, Conn.

A process for forming a protective coat- ing, bonded to a surface comprising apply- ing a coating composition to the surface and drying the coating, said coating com- position being an aqueous dispersion com- prising a mixture of a water-dispersible polymer selected from the group consisting of acrylic polymers, urethane polymers, and mixtures thereof; at least one polyeth- ylenically unsaturated monomer; an at least partially water-soluble free radical poly- merization catalyst; and a source of cat- ions, said coating composition containing 40 to 85% by weight water.

Paint Arrestor U.S. Patent 5,500,271. March 19, 1996 R.M. Pasch and K.C. Langenecker, assignors to Research Products Corp., Madison, Wis.

A paint arrestor for absorbing paint overspray comprising a series of layers of sheet material, each of the layers being slit and expanded to define an array of air spaces distributed in columns, said air spaces alternating in size from column to column and repeating in size in every other column; and means for securing the layers

in contiguous, overlying relationship with one another.

Abrasive Articles Comprising Precisely Shaped Particles U.S. Patent 5,500,273. March f9, 1996 G.L. Holmes et al, assignors to 3M Co., St. Paul, Minn.

An abrasive article comprising a plural- ity of precisely shaped composites and a bonding medium wherein the precisely shaped composites comprise a plurality of abrasive grits and a polymeric binder, wherein the precisely shaped composites are bonded together by means of the bond- ing medium to form a shaped mass or wherein the precisely shaped composites are distributed within a nonwoven web and bonded to the web fibers by means of the bonding medium.

Aluminum Conversion Coating U.S. Patent 5,500,288. March 19, 1996 Y lsobe and H. Mizuno, assignors to Nippondenso Co. Ltd., Kariya, Japan

A corrosion-resistant chemical conver- sion coating formed on a surface of an

hccause PVN lahl over twice as long ~1s platinkd tit;rnium < > niobium is three times more con ductivc th;m titnnium. thcwt’orr better current dklribution ;Ind less powu consumption < s Pt clnd is ;rwil;rhle in I25 8 Xl mlcroinches mesh nnd solid. sin& nnd double sided c > tell us your specifkxtion nnd WC f:w you quote with dr:wine

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