EP 1409157 B1 20070411 - ANTICORROSIVE BLACK COATING ON ZINC ALLOY AND METHOD FOR MAKING SAME
Title (en)
ANTICORROSIVE BLACK COATING ON ZINC ALLOY AND METHOD FOR MAKING SAME
Title (de)
SCHWARZER KORROSIONBESTÄNDIGER ÜBERZUG AUF ZINKLEGIERUNG UND VERFAHREN ZU SEINER HERSTELLUNG
Title (fr)
COUCHE NOIRE ANTICORROSIVE SUR UN ALLIAGE DE ZINC ET SON PROCEDE DE PREPARATION
Publication
Application
Priority
- FR 0102376 W 20010720
- FR 0009716 A 20000725
Abstract (en)
[origin: WO0207902A2] The invention concerns a method for depositing an anticorrosive black coating on a zinc alloy which consists in treating the zinc alloy in a first step with an aqueous acid solution of Cr3+ containing one or several complexing agents and in treating the resulting passivated zinc alloy in a second step with an aqueous suspension containing organic polymers and anticorrosive metal oxides and black pigments. The invention also concerns a black anticorrosive coating with two layers on a zinc alloy, the first layer of the anticorrosive coating having a weight (in Cr) of 1 to 4 mg/dm<2>.
IPC 8 full level
B05D 5/06 (2006.01); B05D 7/00 (2006.01); B05D 7/14 (2006.01); C23C 22/06 (2006.01); C23C 22/10 (2006.01); C23C 22/46 (2006.01); C23C 22/48 (2006.01); C23C 22/53 (2006.01); C23C 28/00 (2006.01)
CPC (source: EP)
B05D 7/14 (2013.01); B05D 7/51 (2013.01); C23C 22/10 (2013.01); C23C 22/46 (2013.01); C23C 22/53 (2013.01); C23C 2222/10 (2013.01)
Designated contracting state (EPC)
DE ES FR IT SE
DOCDB simple family (publication)
WO 0207902 A2 20020131; WO 0207902 A3 20020620; DE 60127870 D1 20070524; DE 60127870 T2 20080117; EP 1409157 A2 20040421; EP 1409157 B1 20070411; ES 2282278 T3 20071016; FR 2812307 A1 20020201; FR 2812307 B1 20030214
DOCDB simple family (application)
FR 0102376 W 20010720; DE 60127870 T 20010720; EP 01958148 A 20010720; ES 01958148 T 20010720; FR 0009716 A 20000725