A WATER-BASED COMPOSITION FOR POST-TREATMENT OF METAL SURFACES

• Main Authors: ARAI, Chiho, KURTZ, Olaf, LAGORCE-BROC, Florence, RÜTHER, Robert
• Format: Patent
• Language: English
• Published: 13.06.2019
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR 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; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE

A water-based composition for post-treatment of metal surfaces, preferably a silver or silver alloy surface, comprising an alkanethiol an anionic, cationic, non-ionic, amphoteric or zwitterionic surfactant with a HLB value of 12 to 18, a compound of the general formula (I) wherein R1 is -H, -CH3, -C2H5, -(C2H4O)p-H, -(C2H4O)p-CH3, -(C2H4O)p-CH(CH3)2, -(C2H4O)p-C(CH3)3, wherein p is 1 to 20, R2 is H, or CH3 n is an integer in the range of 0 to 3, m is an integer in the range of 0 to 2.