Metallization inhibitor for racks employed in galvanic treatments
AssigneeMontaldi S.R.L.
InventorDavide DEMICHELIS
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Abstract
The metallization of a metallic rack employed in galvanic metallization processes of plastic material items, coated by immersion in PVC Plastisol, is inhibited thanks to the fact that PVC Plastisol is mixed with a C8-C18 thiol selected from octyl mercaptan, nonyl mercaptan, decyl mercaptan, n-octadecyl-3-mercaptopropionate, isooctyl-3-mercaptopropionate, n-octyl-mercaptopropionate, dodecyl-3-mercaptopropionate, tridecyl-3-mercaptopropionate, palmityl mercaptan, bis-phenyl-1,4-thiol.
Claims9
A method for inhibiting metallization of a metallic rack employed in galvanic metallization processes of plastic material items, wherein the rack designed to bear the plastic material item is coated by immersion in PVC Plastisol, wherein the PVC Plastisol is mixed with a C8-C18 thiol selected from octyl mercaptan, nonyl mercaptan, decyl mercaptan, n-octadecyl-3-mercaptopropionate, isooctyl-3-mercaptopropionate, n-octyl-mercaptopropionate, dodecyl-3-mercaptopropionate, tridecyl-3-mercaptopropionate, palmityl mercaptan, bis-phenyl-1,4-thiol, and wherein the metallic rack is treated by a chromium (VI)-free etching solution.
A metallization inhibitor for metallic racks employed in galvanic metallization of plastic material items and coated by PVC Plastisol, wherein the inhibitor consists of a C8-C18 thiol selected from octyl mercaptan, nonyl mercaptan, decyl mercaptan, n-octadecyl-3-mercaptopropionate, isooctyl-3-mercaptopropionate, n-octyl-mercaptopropionate, dodecyl-3-mercaptopropionate, tridecyl-3-mercaptopropionate, palmityl mercaptan, bis-phenyl-1,4-thiol mixed with PVC Plastisol before racks coating.
Dependencies are inferred from the claim text.