C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
148/17, 117/91
C23C 22/78 (2006.01) C23C 22/17 (2006.01)
Patent
CA 1333989
Effective, titanium-free agents for activating metal surfaces prior to phosphating these surfaces with phos- phating baths containing zinc ions can be made by react- ing alkali metal phosphates with 1,1-diphosphonic acids and their alkali metal salts and/or poly(aldehydocarbox- ylic acids) and their alkali metal salts.
597876
Brands Karl-Dieter
Christophliemk Peter
Endres Helmut
Roland Wolf-Achim
Henkel Kommanditgesellschaft Auf Aktien
Swabey Ogilvy Renault
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