acrylic or methacrylic acid ester of an ali- phatic polyol, an acrylic or methacrylic acid ester of an ethylene oxide-adduct of an aliphatic polyol or a mixture thereof; and a catalyst capable of catalyzing the Michael reaction.

Powder Coat ing Appara tus U.S. Patent 5,645,227. July 8, 1997 K. Tsutsui and S.A. Rhue, assignors to Nippon Paint Co. Ltd., Osaka, Japan

A powder coating machine capable of pulverizing paint chips and spraying result- ant powdered paint as a coating on articles.

Method of Textur iz ing a Subst ra te U.S. Patent 5,645,471. July 8, 1997 D.N. Strecker, assignor to 3M Co., St. Paul Minn.

A method of texturing a surface of a rigid disk to simultaneously impart a first area having a first surface finish and a second area having a second surface finish comprising contacting with a coated abra- sive articles comprising a first region hav- ing a first abrasive nature and a second region having a second abrasive nature, both regions bonded to a backing, said first abrasive nature being different than the second abrasive nature; and moving at least one of the coated abrasive articles or the rigid disk with respect to each other under conditions to impart said first and second surface finishes.

Abras ive Ar t ic le u.s. Patent 5,645,618. July 8, 1997 L.D. Monroe and T.E. Wood, assignors to 3M Co., St. Paul, Minn.

A method for making an abrasive article comprising preparing a dispersion compris- ing a liquid medium and a sufficient amount of alpha alumina particles, which provides a plurality of crystalline ceramic, alpha alumina based abrasive grain having a hardness of at least 16 GPa, a density of at least 3.58 g/cm 3, an average alpha alu- mina crystallite size of less than 2 mi- crometer, and, on a theoretical oxide basis, less than 0.3% by weight SiO 2.

Abras ive Gra in U.S. Patent 5,645,619. July 8, 1997 D.D Enckson et aL, assignors to 3114 Co., St. Paul, Minn.

A method tbr preparing alpha alumina based ceramic abrasive grain, said method comprising preparing a dispersion compris- ing liquid medium, a peptizing agent, boeh- mite, a source of iron oxide, and a source of amorphous silica; converting the dispersion to an abrasive grain precursor; and sintering

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METAL FINISHING ° MARCH 1998 93

to provide an alpha alumina based ceramic abrasive grain comprising, on a theoretical oxide basis, A]203, 0.1 to 10% by weight Fe20 > and 0.1 to 20% by weight SiO:.

Sputtering Device u.s. Patent 5,645,699. July 8, 1997 PA Sieck, assignor to The BOC Group Inc., New Providence, N.J.

In a magnetron having at least first and second targets from which material is sput- tered in order to deposit a film on a sub- strate, each of the first and second targets being symmetrically shaped about an axis, said targets being held with their axes ori- ented parallel to each other and with a space between the targets in a direction orthogonal to said axes, an improved anode arrangement, comprising first and second elongated anodes with lengths thereof po- sitioned parallel to the axes, said first and second anodes being spaced apart from said targets along sides thereof remote from said space, and at least a third elon- gated anode positioned parallel to said axes and in the space between said first and second targets.

Electroless Plating Bath U.S. Patent 5,645,628. July 8, 1997 M. Endo et aL, assignors to Matsushita Electric Industrial Co. Ltd., Osaka, Japan

An electroless plating bath to be used for forming a wiring of a semiconductor de- vice comprising a metallic material con- taining metallic ions; a reducing agent of the metallic ions, which contains no metal in the chemical formula thereof; a com- plexing agent of the metallic ions, which contains no metal in the chemical formula thereof; and a pH control agent, wherein the metallic ions are silver, copper, gold, or palladium ions, and the reducing agent comprises at least one substance selected from the group consisting of tartaric acid, tartrate containing no metal in the chemical formula thereof, monosaccharide, disac- charide, polysaccharide, and polyol.

Method for Painting a Vehicle U.S. Patent 5,645,895. July 8, 1997 J. Murayama et aL, assignors to Honda Giken Kogyo KK, Tokyo

A method of painting a front end, engine hood, front pillars, a roof, rear pillars, a trunk lid, and a rear end of a vehicle body

having a longitudinal axis comprising mov- ing the vehicle body by a conveyor mech- anism in a direction of the longitudinal axis; directing paint spraying means sub- stantially perpendicularly to surfaces to be coated, said surfaces having different an- gles of inclination; spacing the paint spray- ing means from the surfaces of the vehicle body; controlling the velocity of movement of the paint spraying means to vary hori- zontal and w,'rtical components of velocity of the paint spraying means dependent on the different angles of inclination; and ejecting paint sprays from the paint spray- ing means to form paint coatings on the vehicle body while the vehicle body and the paint spraying means both continue to be moved.

Autodeposit ion Coating Composit ion u.s. Patent 5,646,211. July 8, 1997 T. Honda and K. Naito, assignors to Henkel Corp., Plymouth Meeting, Pa.

An aqueous autodeposition coating composition having a pH in the range of 1.6 to 5.0, which comprises water-dispers-

T e c h n i c "s P l a t i n u m C l a d A n o " Providing longer anode life with results equal to solid platinum at significant savings.

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94 METAL F IN ISHING • M A R C H 1998