Determination of coating sag
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spraying the article; drying the sprayed ar- ticle at ambient temperatures; where the cellulose acetate butyrate is selected to have a concentration between 0.1 and 2.0% by weight of the total weight of solids in the paint ready for spraying. Coating Metal Strip US. Patent 5,520,964. May 28, 1996 J.F: Carey and M. Zamanzadeh, assignors to The Louis Berkman Co., Sfeubenville, Ohio A method of producing a coated metal strip having corrosion-resistant properties comprising coating with a corrosion-resis- tant alloy by continuously passing the strip in a longitudinal direction through a molten bath of alloy such that the residence time is sufficient to deposit the corrosion-resistant layer on the surface; said corrosion-resis- tant alloy including a majority weight per- cent of tin, up to 0.1% lead, and an effec- tive amount of a metallic stabilizer for inhibiting crystallization of the tin, said metallic stabilizer selected from the group consisting of antimony, bismuth, and mix- tures thereof; and, controlling the coating thickness to 0.0003-0.2 in. Waterborne, Zinc-Rich Coating U.S. Patent 5521,012. May 28, 1996 J. Aklian et al., assignors to Couffaulds Coatings, Louisville, Ky A process for protecting a ferrous metal article from corrosion comprising provid- ing a coating composition comprising ef- fective film-forming amounts of an aque- ous polymer composition, zinc powder, and a nonchromate temporary zinc inhibitor, the inhibitor comprising amines, polyamines or combinations thereof. Powder Coating Composition U.S. Patent 5,521,250. May 28, 7996 C. Wamprecht et al, assignors to Sayer AG, Leverkusen, Germany A powder coating composition, which is suitable for the production of tough, resil- ient, nonyellowing coatings that are resis- tant to solvents and chemicals and may be hardened at temperatures of at least 12o’C, wherein the composition contains a copol- ymer component consisting essentially of one or more copolymers containing ep- oxide and anhydride groups; and, option- ally, one or more crosslinking agents in the form of polyaddition products having ure- tdione groups. Palladium-Plated Device U.S. Patent 5,521,432. May 28, 1996 K. Fuji et al., assignors to Fujitsu Ltd., Kawasaki, Japan A semiconductor device having im- proved leads comprising palladium-plated nickel. Determination of Coating Sag U.S. Patent 5,521,477. May 28, 1996 H. Sasaki, assignor to Mazda Motor Corp., Hiroshima-ken, Japan A method for evaluating coating sag comprising determining a coating thickness on each of a plurality of specific portions of a coating surface based on various coating condition parameters; evaluating an incli- nation of each of the specific portions of the coating surface relative to a vertical surface; determining a critical coating thickness on the vertical surface at which a coating sag is about to be produced: and evaluating whether a coating sag is pro- duced on the specific portions of the coat- ing surface, respectively, based on the in- clination and the coating thickness in view of the critical coating thickness on the ver- tical surface.Abrasive Blasting Device U.S. Patent $222,761. June 4, 1996 M.A. Lessard, Oakland, Maine A radial-grip remote control for abrasive blast machines. Electroplating Workpiece Fixture U.S. Patent 5,522,975. June 4, 1996 f!C. Andricacos et a/., assignors to ISM Corp., Armonk, N. Y. A fixture for supporting a workpiece in a plating cell comprising a frame including a stem for removably positioning the frame into the plating cell, and a head, the frame head having a hole extending therethrough from front to back sides of the frame; a holder having a plateau on a front side thereof for supporting the workpiece adja- cent to a perimeter thereof; said frame-head hole being complementary to the holder plateau and workpiece positionable thereon for receiving the plateau to align the work- piece with the frame front side there- around; and the means for retaining the workpiece against the plateau. Removal of Cyanide and Heavy Metals U.S. Patent 5,522,997. June 4, 1996 M.J. Wmig et al, assignors to Cognis Inc., Santa Floss, Calif. A continuous process for removing an- ionic metal species, cyanide species, or a combination thereof from an aqueous alka- line effluent comprising contacting a water- immiscible extractant phase comprising an extractant, which is capable of being pro- tonated at a pH of 9 or above with an aqueous buffer solution having a pH of from 8.5 to 10.5 to form a pre-treated ex- tractant phase; contacting the aqueous al- kaline effluent with said pretreated extrac- tant phase to extract the anionic metals from the aqueous alkaline effluent and form a loaded extractant phase; separating the anionic metal-barren aqueous alkaline effluent from the loaded extractant phase; contacting the loaded extractant phase with a strongly alkaline solution to remove the anionic metals and form a regenerated ex- tractant phase; acidifying the buffer solu- tion to pH 8.5 to 10.5; and recycling the acidified buffer solution and regenerated extractant phase. Electrolytic Deposition of Polypyrrole U.S. Patent 5,522,981. June 4, 1996 i?C. Lacaze et al., assignors to Sollac, Pufeaux, France A process for depositing an adhesive coat- ing of polypyrrole on a surface of an article made of oxidizable metal, based on iron, zinc, copper, nickel, or aluminum or alloys thereof, by electropolymerization of an aque- ous or aqueous-alcoholic electrolytic solution of pyrrole, one or more substituted pyrroles, or pyrrole and one or more substituted pyr- roles in an electropolymerization device in which the anode consists of the article made of oxidizable metal. Treatment of Electroless Copper Plating Waste U.S. Patent 5,523,OOi. June 4, 1996 EP Foeckler and S. La/, assignors to AT&T Corp., Murray Hi//, N. J. A method for treating a waste solution including organic contaminants from an electroless process comprising diluting the waste solution by the addition of water in an amount of 0.5 to 1.5 parts water to 1 part waste solution; adjusting the pH of the resulting mixture to within the range of 6-S; adding hydrogen peroxide in an amount of 1,500-2,500 ppm to the result- ing mixture to chemically oxidize said or- ganic contaminants; and irradiating the re- sulting mixture with ultraviolet light, wherein the organic contaminants are chemically oxidized by a combination con- sisting essentially of hydrogen peroxide and ultraviolet light. Protective Masking Coating U.S. Patent 5,523,llZ June 4, 1996 E. W. Woodhall et al, assignors to Cal-West Equipment Co. Inc., Sunnyvale, Calif. A method of painting an automobile, comprising applying a masking material to surface portions of the automobile; said masking material comprising between 10 to 15% polyvinyl alcohol, by weight, a surfactant, and between 0.1 to 7% plasti- cizer; painting the surface, and washing the coating from the surface portions of the automobile to be protected with a water wash whereby paint applied to the pro- tected portions of the surface of the auto- mobile is removed together with the mask- ing material.- METAL FINISHING . FEBRUARY 1997 117
Transcript of Determination of coating sag
spraying the article; drying the sprayed ar- ticle at ambient temperatures; where the cellulose acetate butyrate is selected to have a concentration between 0.1 and 2.0% by weight of the total weight of solids in the paint ready for spraying.
Coating Metal Strip US. Patent 5,520,964. May 28, 1996 J.F: Carey and M. Zamanzadeh, assignors to The Louis Berkman Co., Sfeubenville, Ohio
A method of producing a coated metal strip having corrosion-resistant properties comprising coating with a corrosion-resis- tant alloy by continuously passing the strip in a longitudinal direction through a molten bath of alloy such that the residence time is sufficient to deposit the corrosion-resistant layer on the surface; said corrosion-resis- tant alloy including a majority weight per- cent of tin, up to 0.1% lead, and an effec- tive amount of a metallic stabilizer for inhibiting crystallization of the tin, said metallic stabilizer selected from the group consisting of antimony, bismuth, and mix- tures thereof; and, controlling the coating thickness to 0.0003-0.2 in.
Waterborne, Zinc-Rich Coating U.S. Patent 5521,012. May 28, 1996 J. Aklian et al., assignors to Couffaulds Coatings, Louisville, Ky
A process for protecting a ferrous metal article from corrosion comprising provid- ing a coating composition comprising ef- fective film-forming amounts of an aque- ous polymer composition, zinc powder, and a nonchromate temporary zinc inhibitor, the inhibitor comprising amines, polyamines or combinations thereof.
Powder Coating Composition U.S. Patent 5,521,250. May 28, 7996 C. Wamprecht et al, assignors to Sayer AG, Leverkusen, Germany
A powder coating composition, which is suitable for the production of tough, resil- ient, nonyellowing coatings that are resis- tant to solvents and chemicals and may be hardened at temperatures of at least 12o’C, wherein the composition contains a copol- ymer component consisting essentially of one or more copolymers containing ep- oxide and anhydride groups; and, option- ally, one or more crosslinking agents in the form of polyaddition products having ure- tdione groups.
Palladium-Plated Device U.S. Patent 5,521,432. May 28, 1996 K. Fuji et al., assignors to Fujitsu Ltd., Kawasaki, Japan
A semiconductor device having im- proved leads comprising palladium-plated nickel.
Determination of Coating Sag U.S. Patent 5,521,477. May 28, 1996 H. Sasaki, assignor to Mazda Motor Corp., Hiroshima-ken, Japan
A method for evaluating coating sag comprising determining a coating thickness on each of a plurality of specific portions of a coating surface based on various coating condition parameters; evaluating an incli- nation of each of the specific portions of the coating surface relative to a vertical surface; determining a critical coating thickness on the vertical surface at which a coating sag is about to be produced: and evaluating whether a coating sag is pro- duced on the specific portions of the coat- ing surface, respectively, based on the in- clination and the coating thickness in view of the critical coating thickness on the ver- tical surface.Abrasive Blasting Device U.S. Patent $222,761. June 4, 1996 M.A. Lessard, Oakland, Maine
A radial-grip remote control for abrasive blast machines.
Electroplating Workpiece Fixture U.S. Patent 5,522,975. June 4, 1996 f!C. Andricacos et a/., assignors to ISM Corp., Armonk, N. Y.
A fixture for supporting a workpiece in a plating cell comprising a frame including a stem for removably positioning the frame into the plating cell, and a head, the frame head having a hole extending therethrough from front to back sides of the frame; a holder having a plateau on a front side thereof for supporting the workpiece adja- cent to a perimeter thereof; said frame-head hole being complementary to the holder plateau and workpiece positionable thereon for receiving the plateau to align the work- piece with the frame front side there- around; and the means for retaining the workpiece against the plateau.
Removal of Cyanide and Heavy Metals U.S. Patent 5,522,997. June 4, 1996 M.J. Wmig et al, assignors to Cognis Inc., Santa Floss, Calif.
A continuous process for removing an- ionic metal species, cyanide species, or a combination thereof from an aqueous alka- line effluent comprising contacting a water- immiscible extractant phase comprising an extractant, which is capable of being pro- tonated at a pH of 9 or above with an aqueous buffer solution having a pH of from 8.5 to 10.5 to form a pre-treated ex- tractant phase; contacting the aqueous al- kaline effluent with said pretreated extrac- tant phase to extract the anionic metals from the aqueous alkaline effluent and form a loaded extractant phase; separating the anionic metal-barren aqueous alkaline
effluent from the loaded extractant phase; contacting the loaded extractant phase with a strongly alkaline solution to remove the anionic metals and form a regenerated ex- tractant phase; acidifying the buffer solu- tion to pH 8.5 to 10.5; and recycling the acidified buffer solution and regenerated extractant phase.
Electrolytic Deposition of Polypyrrole U.S. Patent 5,522,981. June 4, 1996 i?C. Lacaze et al., assignors to Sollac, Pufeaux, France
A process for depositing an adhesive coat- ing of polypyrrole on a surface of an article made of oxidizable metal, based on iron, zinc, copper, nickel, or aluminum or alloys thereof, by electropolymerization of an aque- ous or aqueous-alcoholic electrolytic solution of pyrrole, one or more substituted pyrroles, or pyrrole and one or more substituted pyr- roles in an electropolymerization device in which the anode consists of the article made of oxidizable metal.
Treatment of Electroless Copper Plating Waste U.S. Patent 5,523,OOi. June 4, 1996 EP Foeckler and S. La/, assignors to AT&T Corp., Murray Hi//, N. J.
A method for treating a waste solution including organic contaminants from an electroless process comprising diluting the waste solution by the addition of water in an amount of 0.5 to 1.5 parts water to 1 part waste solution; adjusting the pH of the resulting mixture to within the range of 6-S; adding hydrogen peroxide in an amount of 1,500-2,500 ppm to the result- ing mixture to chemically oxidize said or- ganic contaminants; and irradiating the re- sulting mixture with ultraviolet light, wherein the organic contaminants are chemically oxidized by a combination con- sisting essentially of hydrogen peroxide and ultraviolet light.
Protective Masking Coating U.S. Patent 5,523,llZ June 4, 1996 E. W. Woodhall et al, assignors to Cal-West Equipment Co. Inc., Sunnyvale, Calif.
A method of painting an automobile, comprising applying a masking material to surface portions of the automobile; said masking material comprising between 10 to 15% polyvinyl alcohol, by weight, a surfactant, and between 0.1 to 7% plasti- cizer; painting the surface, and washing the coating from the surface portions of the automobile to be protected with a water wash whereby paint applied to the pro- tected portions of the surface of the auto- mobile is removed together with the mask- ing material.-
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