13. Hmson, assgnor to Chromalloy Gas Turbine Corp.. San Antonio, Texas

A process for roughening a metal sur- face comprising applying a coating, which is a temporary harrier to an etchant attack- ing the metal surface. M,herein the coating is susceptible to being gradually removed by the etchant and to being erratically pen- etrated hy the etchant causing irregular ac- tion between the etchant and the metal; and etching the coated metal surface with an aqueous bath containing the etchant effec- tive to product a roughened metal surface.

Refinish Paint Composition U.S. Patent 5705.227. Jan. 6, 1998 D. H. Larrow and LE. Thieben, assignors to BASF Corp.. Mount Olive. N.J

A method for refinishing ;I substrate sur- face by preparing a refinish primer compo- sition comprising an organic solvent based dispersion having a solids content in the range 45 to 70% by weight. wherein the solids comprise IO to 50% of crosslinked acrylic polymer microparticler: 30 to 60% of an oxidatively-curable resin: and IS to 10% of one or more additional ingredients selected i’rom the group consisting of cor- rosion inhibitors. inert fillers. pigments. surface builders. and mi?;iurcs thereof: ap- plying the refinish primer composition to a substrate surface to form a protective layer: applying a primer/surface composition; smoothing the overlaid primer/surface layer without using a heat treatment as soon as said primer surfacer is dry to touch; applying a topcoat on the smoothed over- laid primer/surfacer layer: and allowing the refinish prirner system to oxidatively cure.

Neutral Aqueous Cleaning Composition U.S. Patenf 5,705.472. Jan. 6, 1998 ME. Hayes et al., assignors lo Pefroferm Inc.. Fernandina Beach F/a.

,411 aqueous cleaning composition having a pH of h to 8 and comprising a solution of 30 to 68% by weight water; 2.5 to 55% of or- ganic solvent for dissolving adherent soils from a substrate and for stabilizing the clean- ing composition; 5 to IO% of an imidazoline- hased cationic surfactant for dissolving ad- herent soils from a substrate and for hriphtening the xtrrf&e of soft metals; I to S% of a nonionic surfactant for maintaining the cationic surfactant in solution; and a weak organic acid for imparting to the composition the desired pH.

Polyester Powder Coating U.S. Patent 5705,548. Jan. 6, 1998 Y Matsuoka et al., assignors to Sumifomo Chemical Co. Ltd., Osaka, Japan

A powder coating composition compris- ing as essential components polyester resin

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having at least two hydroxyl groups in a cyanate. an adduct of the dimers to pen- tamers with an active hydrogen-contain- ing cornpound and an adduct of aliphatic poiyisocyanate with an active hydropen- containing compound: and water-.

molecule, and polyvalent organic cyanate having at least two cyanate groups in a molecule.

Aqueous Intercoat Composition U.S. Patent 5.705,595. Jan. 6, 1998 H. Oda et al, assignors to Kansai Paint Co. Ltd., Amagasaki. Japan

An aqueous intercoal composition comprising. a5 main components, a poly- ester resin having a weight average mo- Iccular weight of 10.000 to 20.000 and containing a hydroxyl group and a car- hoxyl group in one molecule: ;I blocked product of at least one polyisocyanate selected from the group concisting of dirners to pentamer+ of ;Iliphatic polyiso-

Method of Finishing Moldings U.S. Patent 5.706,567. Jan. 13, 1998 T Sakagaml et al., assignors to Asahi Jet Corp. and BBF Yamate Corp., Shizuoka, Japan

A method for finishing a surface of a molded metal nrticlc comprising a first pol- ishing step by bringing I circumferential surface of a soft huff into cont;ICt with a surface of the molded article while supply- ing the molded article wilh ;I polishing liquid to which a polishing powder has been added.

METAL FINISHING l JULY 1998 57