C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 18/36 (2006.01)
Patent
CA 2226744
This invention relates to aqueous solutions containing Ni cation and hypophosphite anion which have a Ni cation concentration greater than 36 grams /liter. Such solutions have utility in electroless nickel plating baths and processes as make-up solutions and replenishing solutions. The increased concentration of Ni cation results from the addition of the nickel salt of an alkyl sulfonic acid to the solution.
La présente invention concerne des solutions aqueuses contenant le cation Ni et l'anion hypophosphite et qui possèdent une concentration de cation Ni supérieure à 36 grammes par litre. Ces solutions sont utiles dans les procédés et les bains de nickelage par dépôt autocatalytique comme solutions d'appoint et comme solutions pour refaire le plein. La concentration accrue de cation Ni provient de l'addition à la solution du sel de nickel d'un acide alkylsulfonique.
Atofina Chemicals Inc.
Borden Ladner Gervais Llp
Elf Atochem North America Inc.
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