FORMALDEHYDE-FREE ELECTROLESS COPPER PLATING SOLUTION

• Main Authors: STEINHAEUSER, EDITH, NGUYEN, TANG CAM LAI, WIESE, STEFANIE, STAMP, LUTZ, ROESELER, SANDRA
• Format: Patent
• Language: English; French
• Published: 13.03.2014
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to an electroless aqueous copper plating solution, comprising a source of copper ions, a source of glyoxylic acid as reducing agent, and at least one polyamino disuccinic acid or at least one polyamino monosuccinic acid, or a mixture of at least one polyamino disuccinic acid and at least one polyamino monosuccinic acid as complexing agent, as well as to a method for electroless copper plating utilizing said solution and the use of the solution for the plating of substrates. La présente invention porte sur une solution aqueuse pour cuivrage autocatalytique, comprenant une source d'ions cuivre, une source d'acide glyoxylique servant d'agent réducteur et au moins un acide polyaminodisuccinique ou au moins un acide polyaminomonosuccinique, ou un mélange d'au moins un acide polyaminodisuccinique et d'au moins un acide polyaminomonosuccinique servant d'agent complexant, ainsi que sur un procédé pour le cuivrage autocatalytique utilisant ladite solution et sur l'utilisation de la solution pour le placage de substrats.