EP 0171043 A3 19880608 - PASSIVATING PROCESS FOR LEAD AND LEAD-CONTAINING SURFACES
Title (en)
PASSIVATING PROCESS FOR LEAD AND LEAD-CONTAINING SURFACES
Publication
Application
Priority
DE 3429532 A 19840810
Abstract (en)
[origin: EP0171043A2] The surfaces are passivated by contacting them, if necessary after degreasing cleaning, with acidic aqueous solutions containing chromium(III) ions in a quantity of 0.01 to 10 g x l<-1>.
IPC 1-7
IPC 8 full level
C23C 22/08 (2006.01); C23C 22/48 (2006.01); C23C 22/58 (2006.01); C23C 22/78 (2006.01); C23F 11/00 (2006.01)
CPC (source: EP)
C23C 22/08 (2013.01); C23C 22/58 (2013.01); C23C 2222/10 (2013.01)
Citation (search report)
- [X] DE 2031358 A1 19711230 - COLLARDIN GMBH GERHARD
- [X] EP 0034040 A1 19810819 - BNF METALS TECH CENTRE [GB]
- [A] FR 2274706 A1 19760109 - LUBRIZOL CORP [US]
- [A] US 3592747 A 19710713 - COHN CHARLES C
- [A] GB 118182 A 19180822 - BURNETT EDWIN EBENEZER
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
EP 0171043 A2 19860212; EP 0171043 A3 19880608; EP 0171043 B1 19910515; CA 1261716 A 19890926; DE 3429532 A1 19860220; DE 3582833 D1 19910620; JP S6148575 A 19860310
DOCDB simple family (application)
EP 85109735 A 19850802; CA 486844 A 19850716; DE 3429532 A 19840810; DE 3582833 T 19850802; JP 17562885 A 19850808