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Washable coated abrasive
PATENTSGRANTED In the Metal Finishing Field Printed copies of patents are furnished by the Patent and Trademark Office for $3.00 each. Address orders to: Commissioner of Patents and Trademarks, Washington, D.C. 20231.
Washable Coated Abrasive U.S.Patent 5,578,097. Nov. 26, 1996 A.C. Gaeta and G.S. Swei, assignors to Norton Co., Worceste< Mass.
A coated abrasive comprising a substrate, a maker coat, a layer of abrasive particles, adhered to the substrate by the maker coat, a size coat applied over the layer of abrasive particles and optionally a supersize coat applied over the size coat, wherein the coat applied last comprises a resin binder and a polysiloxane additive bonded to the resin binder.
Coated Abrasive Containing Erodible Agglomerates U.S. Patent 5,576,096. Nov. 26, 1996 J.J. Gagliardiet al, assignors to 3M Co., St. Paul, Minn.
A coated abrasive article comprising a backing having at least one major surface, and erodible agglomerates and abrasive grains, wherein the erodible agglomerates and abrasive grains bear on and adhere to the at least one major surface of the backing, wherein the erodible agglomerates consist essentially of a grinding aid, do not contain abrasive particles having a Mohs hardness in excess of 7, and have a rod shape, wherein the grinding aid has a Mohs hardness of less than 7 and is selected from the group consisting of thermoplastic materials.
Stripping of Paint from Plastic U.S. Patent 5,578,X%. Nov. 26, 1996 K. LOhr et a/., assignors to Daimler-Benz, Stuttgart, Germany
A process for stripping a coating from coated plastic parts to obtain recycled stripped plastic, comprising first mechanically cornminuting the coated plastics parts into plastic chips of a pourable size; mixing the plastic chips with a stripping agent of anhydrous alkalified glycol, selected from the group consisting of diethylene glycol or propylene glycol, wherein the stripping agent is added in an amount of from 1 to 10% of the volume of plastic chips to be recycled, so that the plastic chips are only wetted by the stripping agent; circulating the plastic chips with the stripping agent at a temperature of at least 50°C for a predetermined time to strip the coating from the 108
plastic chips by mutual abrasion to obtain stripped plastic chips without damaging the plastic chips; separating the stripped plastic chips from the stripping agent; and flushing and drying the stripped plastic chips.
Fully Annealed Metal Anode U.S. Patent 5,578,177. Nov. 26, 1996 G.A. Wolf, assignor to FIFE Industries inc., Keasbey N.J.
A method of manufacturing metal anodes having a fully annealed state, comprising supplying metal for forming an anode therefrom; heating the metal to a molten state; flowing the molten metal at a selected flow rate through a die having a channel of selected length extending between an inlet and an outlet; cooling the molten metal flowing through the channel at a selected cooling rate to a solid state therein; and annealing the metal within the die by controlling flow rate and cooling rate such that a metal anode having a fully annealed state is delivered at the outlet.
Plating Electroless Nickel on Zinc Die Castings U.S. Patent 5,578,187. Nov. 26, 1996 M.W Zitko et al., assignors to Enthone-OMI Inc., West Haven, Corm.
A process for plating a zinc die casting with an electroless nickel coating comprising mechanically cleaning the zinc die casting; depositing a zinc or zinc alloy layer on the casting using a zinc electroplating bath having a pH greater than 13; depositing a first electroless nickel layer on the zinc electroplated layer using an alkaline electroless nickel bath containing antimony ions in an effective amount to provide enhanced bath stability and metal adhesion properties; and depositing a finish electroless nickel layer on the electroless nickel layer thereof using an acid electroless nickel bath.
Autodeposition System U.S. Patent 5,578,199. Nov. 26, 1996 W.G. Kozak and J.C. Topping, assignors to Henkel Corp., Plymouth Meeting, Pa.
An ion exchange apparatus for maintaining a stable bath for an autodeposition
composition by periodically separating particular metal ions from the composition.
Build-Up Technique for Manufacturing a Prlnted Circuit U.S. Patent 5,578,341. Nov. 26, 7996 K. Hirosawa, assignor to NEC Corp., Tokyo
A method of manufacturing a printed circuit board comprising forming a circuit layer on a board roughening a surface of the circuit layer; forming an insulating layer on the circuit layer having an opening exposing a viahole area of the first circuit layer; roughening a surface of the insulating layer; subjecting only the exposed viahole area of the circuit layer to a reduction process after roughening of the surface of the insulating layer; and applying an additional plating to the printed circuit board without using a soft etching process prior to applying the additional plating.
Mesh-Backed Abrasive U.S. Patent 5,578,343. Nov. 26, 1996 A.C. Gaeta et al., assignors to Norton Co., Worcester, Mass.
A process for the production of a meshbacked abrasive material, which comprises directly coating an unfinished greige mesh fabric in which at least 20% of the surface area is void with a solvent-free liquid maker coat comprising a binder component consisting essentially of a bifunctional radiation-curable adhesive; applying a coating of abrasive grain to the maker coat; radiation curing the maker coat at least to the point at which it becomes solidified; applying a liquid-size coat comprising a thermally curable resin over the abrasive gram; and completing the cure of both maker and size coats.
Primer Coating for Metal U.S. Patent 5,578,347. Nov. gi996 C. Chan, assignor to El. Du Pont de Nemours and Co., Wilmington, Del.
A process for coating a metal substrate comprising applying to a clean substrate, one that has not been subject to an acid etch or acid anodization treatment, an aqueous solution of one or more uncopolymerized silanes; removing excess silane by finishMETAL FINISHING
??
SEPTEMBER
1997
Washable Coated Abrasive U.S.Patent 5,578,097. Nov. 26, 1996 A.C. Gaeta and G.S. Swei, assignors to Norton Co., Worceste< Mass.
A coated abrasive comprising a substrate, a maker coat, a layer of abrasive particles, adhered to the substrate by the maker coat, a size coat applied over the layer of abrasive particles and optionally a supersize coat applied over the size coat, wherein the coat applied last comprises a resin binder and a polysiloxane additive bonded to the resin binder.
Coated Abrasive Containing Erodible Agglomerates U.S. Patent 5,576,096. Nov. 26, 1996 J.J. Gagliardiet al, assignors to 3M Co., St. Paul, Minn.
A coated abrasive article comprising a backing having at least one major surface, and erodible agglomerates and abrasive grains, wherein the erodible agglomerates and abrasive grains bear on and adhere to the at least one major surface of the backing, wherein the erodible agglomerates consist essentially of a grinding aid, do not contain abrasive particles having a Mohs hardness in excess of 7, and have a rod shape, wherein the grinding aid has a Mohs hardness of less than 7 and is selected from the group consisting of thermoplastic materials.
Stripping of Paint from Plastic U.S. Patent 5,578,X%. Nov. 26, 1996 K. LOhr et a/., assignors to Daimler-Benz, Stuttgart, Germany
A process for stripping a coating from coated plastic parts to obtain recycled stripped plastic, comprising first mechanically cornminuting the coated plastics parts into plastic chips of a pourable size; mixing the plastic chips with a stripping agent of anhydrous alkalified glycol, selected from the group consisting of diethylene glycol or propylene glycol, wherein the stripping agent is added in an amount of from 1 to 10% of the volume of plastic chips to be recycled, so that the plastic chips are only wetted by the stripping agent; circulating the plastic chips with the stripping agent at a temperature of at least 50°C for a predetermined time to strip the coating from the 108
plastic chips by mutual abrasion to obtain stripped plastic chips without damaging the plastic chips; separating the stripped plastic chips from the stripping agent; and flushing and drying the stripped plastic chips.
Fully Annealed Metal Anode U.S. Patent 5,578,177. Nov. 26, 1996 G.A. Wolf, assignor to FIFE Industries inc., Keasbey N.J.
A method of manufacturing metal anodes having a fully annealed state, comprising supplying metal for forming an anode therefrom; heating the metal to a molten state; flowing the molten metal at a selected flow rate through a die having a channel of selected length extending between an inlet and an outlet; cooling the molten metal flowing through the channel at a selected cooling rate to a solid state therein; and annealing the metal within the die by controlling flow rate and cooling rate such that a metal anode having a fully annealed state is delivered at the outlet.
Plating Electroless Nickel on Zinc Die Castings U.S. Patent 5,578,187. Nov. 26, 1996 M.W Zitko et al., assignors to Enthone-OMI Inc., West Haven, Corm.
A process for plating a zinc die casting with an electroless nickel coating comprising mechanically cleaning the zinc die casting; depositing a zinc or zinc alloy layer on the casting using a zinc electroplating bath having a pH greater than 13; depositing a first electroless nickel layer on the zinc electroplated layer using an alkaline electroless nickel bath containing antimony ions in an effective amount to provide enhanced bath stability and metal adhesion properties; and depositing a finish electroless nickel layer on the electroless nickel layer thereof using an acid electroless nickel bath.
Autodeposition System U.S. Patent 5,578,199. Nov. 26, 1996 W.G. Kozak and J.C. Topping, assignors to Henkel Corp., Plymouth Meeting, Pa.
An ion exchange apparatus for maintaining a stable bath for an autodeposition
composition by periodically separating particular metal ions from the composition.
Build-Up Technique for Manufacturing a Prlnted Circuit U.S. Patent 5,578,341. Nov. 26, 7996 K. Hirosawa, assignor to NEC Corp., Tokyo
A method of manufacturing a printed circuit board comprising forming a circuit layer on a board roughening a surface of the circuit layer; forming an insulating layer on the circuit layer having an opening exposing a viahole area of the first circuit layer; roughening a surface of the insulating layer; subjecting only the exposed viahole area of the circuit layer to a reduction process after roughening of the surface of the insulating layer; and applying an additional plating to the printed circuit board without using a soft etching process prior to applying the additional plating.
Mesh-Backed Abrasive U.S. Patent 5,578,343. Nov. 26, 1996 A.C. Gaeta et al., assignors to Norton Co., Worcester, Mass.
A process for the production of a meshbacked abrasive material, which comprises directly coating an unfinished greige mesh fabric in which at least 20% of the surface area is void with a solvent-free liquid maker coat comprising a binder component consisting essentially of a bifunctional radiation-curable adhesive; applying a coating of abrasive grain to the maker coat; radiation curing the maker coat at least to the point at which it becomes solidified; applying a liquid-size coat comprising a thermally curable resin over the abrasive gram; and completing the cure of both maker and size coats.
Primer Coating for Metal U.S. Patent 5,578,347. Nov. gi996 C. Chan, assignor to El. Du Pont de Nemours and Co., Wilmington, Del.
A process for coating a metal substrate comprising applying to a clean substrate, one that has not been subject to an acid etch or acid anodization treatment, an aqueous solution of one or more uncopolymerized silanes; removing excess silane by finishMETAL FINISHING
??
SEPTEMBER
1997