PATENTS .: ,~i:.'~ _

Granted in the Metal Finishing Field

FILLER COMPONENT FOR USE INAQUEOUSBASECOATSU.S. Patent 5,968,655. Oct. 19, 1999M. Hartung et al., assignors toBASF Coatings AG, Muenster­Hiltrup, Germany

A process for applying a compos­ite coating to a substrate compris­ing preparing a filler componentof 10 to 70% by weight of an aque­ous polyurethane dispersion,wherein the dispersion is from 10to 60% by weight polyurethaneresin and 5 to 40% by weight of atleast one filler; preparing a filler­basecoat composition, comprising10 to 70% by weight filler compo­nent and 90 to 30% by weight of aportion of an aqueous basecoatcomposition; applying the filler­basecoat in a first layer on thesubstrate; applying the aqueousbasecoat composition in a secondlayer; applying a clearcoat in athird layer; and curing the coat­ing layers together.

MIXED SOLVENT CLEANINGCOMPOSITIONU.S. Patent 5,968,882. Oct. 19, 1999H. Matsuhisa and T. Nakamura,assignors to Canon, Tokyo

A nonflammable mixed solventcomposition comprising 5 to 35%by weight of a completely fluori­nated organic compound selectedfrom the group consisting of per­fluoropentane, perfluorohexaneand perfluoroheptane; 20 to 65%of a partially fluorinated aromaticorganic compound, wherein saidpartially fluorinated aromatic or­ganic compound contains no halo­gen atom other than fluorine; and18 to 47.5% of an unhalogenatedhydrocarbon compound.

ANTICORROSIVE COATINGCOMPOSITION

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U.S. Patent 5,969,019. Oct. 19, 1999H. Kanai and T. Shimakura,assignors to Nippon Paint Co., Ltd.,Osaka, Japan and Nippon SteelCorp., Tokyo

An anticorrosive coating composi­tion, which comprises thiocar­bonyl group-containing com­pounds, phosphoric acid, orphosphates, and aqueous resinsin water, wherein the amounts ofthe thiocarbonyl group-contain­ing compounds and the phospho­ric acid or phosphates are 0.2 to50 g and 0.1 to 5 g (in terms ofphosphate ions) respectivelybased on one liter of the totalamount of the aqueous resins andwater.

WATERBORNE COAnNGCOMPOSITIONU.S. Patent 5,969,030. Oct. 19, 1999S. Grandhee, assignor to BASFCorp., Southfield, Mich.

A waterborne coating compositioncomprising hydrophobically mod­ified emulsion polymer, whereinthe emulsion polymer is preparedby a core-shell polymerizationprocess and at least one com­pound selected from the groupconsisting of consisting of plasti­cizers, crosslinking agents, pig­ments, solvents, and mixturesthereof.

EPOXYPOWDER COATINGU.S. Patent 5,969,043. Oct. 19, 1999R. Maruta et al., assignors to ShellOil Co., Houston, Texas

An epoxy resin power coatingcomposition, which comprises 40to 95 parts by weight of a solidepoxy resin having at least 2 ep­oxy groups in a molecule and 5 to60 parts by weight of an epoxi­dized polydiene polymer.

COLORED COATING COMPOSITIONU.S. Patent 5,969,048. Oct. 19, 1999E. Ito et al., assignors to NipponPaint Co., Ltd., Osaka, Japan

A colored coating compositioncomprising 5 to 60% by weight ofa polymer having a carboxylgroup and a carboxylate group; 5to 60% of a polymer having a hy­droxyl group and an epoxy group;0.05 to 20% of a pigment-dispers­ing agent; and 0.1 to 50% of apigment.

COLOR-PLUS-CLEAR COMPOSITECOATINGU.S. Patent 5,969,058. Oct. 19, 1999L.G. Anderson et al., assignors toPPG Industries Ohio Inc., Cleveland

a curable film-forming composi­tion comprising a mixture of 10 to90% by weight of at least one ep­oxy functional copolymer; 5 to95% of at least one polycarboxylicacid crosslinking agent; and aneffective catalytic amount of atlest one triaryltin compound.

HIGH-SOLIDS COATINGU.S. Patent 5,969,085. Oct. 19, 1999F.N. Jones et al., assignors to ExxonChemical Patents Inc., Baytown,Texas

A polymeric vehicle, which is ef­fective for providing a formulatedcoating composition having about75% solids.

PULSED PLASMA .JET PAINTREMOVALU.S. Patent 5,970,993. Oct. 26, 1999F.D. Witherspoon et al., assignors toUtron Inc., Manassas, Va.

A method of removing paint froma surface comprising generatingapulsed plasma within a capillaryby providing an arc dischargewithin the capillary and directingthe pulsed plasma as a jet fromthe capillary to the paint, ablating

Metal Finishing