EP 1713955 A1 20061025 - BLACK PASSIVATION OF ZINC OR ZINC ALLOY SURFACES
Title (en)
BLACK PASSIVATION OF ZINC OR ZINC ALLOY SURFACES
Title (de)
SCHWARZPASSIVIERUNG VON ZINK- ODER ZINKLEGIERUNGSOBERFLÄCHEN
Title (fr)
PASSIVATION NOIRE DE SURFACES EN ZINC OU ALLIAGE DE ZINC
Publication
Application
Priority
- EP 2005000250 W 20050113
- DE 102004001945 A 20040114
Abstract (en)
[origin: WO2005068684A1] The invention relates to an aqueous solution which is used to improve black passivation of zinc or zinc alloy surfaces. Said solution is characterised in that it contains inorganic and/or organic sulphur compounds. As a result, protection against corrosion is essentially improved.
IPC 8 full level
C23C 22/34 (2006.01); C23C 22/53 (2006.01); C23C 22/84 (2006.01)
CPC (source: EP)
C23C 22/34 (2013.01); C23C 22/53 (2013.01); C23C 22/84 (2013.01); C23C 2222/10 (2013.01)
Citation (search report)
See references of WO 2005068684A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 2005068684 A1 20050728; DE 102004001945 A1 20050811; EP 1713955 A1 20061025; EP 1713955 B1 20130619
DOCDB simple family (application)
EP 2005000250 W 20050113; DE 102004001945 A 20040114; EP 05700867 A 20050113