EP 0683246 A1 19951122 - Cleaning and passivation treatment for metals.
Title (en)
Cleaning and passivation treatment for metals.
Title (de)
Reinigungs- und Passivierungsbehandlung von Metallen.
Title (fr)
Traitement de nettoyage et de passivation de métaux.
Publication
Application
Priority
US 24655094 A 19940520
Abstract (en)
There is disclosed a cleaning and passivating treatment solution for ferrous metal surface comprising an essentially amine; alkanol amine and phosphate free aqueous solution of (a) from about 0.05 to 5.0% by weight of a caprylic acid derivative of imidazoline amphoteric surfactant, (b) a borate ion and (c) a molybdate ion wherein the ratio of imidazoline amphoteric surfactant to borate ion is from about 1:0.4 to 1:5 and the ratio of sodium molybdate to imidazoline amphoteric surfactant and borate ion is more than about 1:4. There is also disclosed a method of cleaning and passivating a ferrous metal surface.
IPC 1-7
IPC 8 full level
C23F 11/08 (2006.01); C23G 1/24 (2006.01)
CPC (source: EP)
C23F 11/08 (2013.01); C23G 1/24 (2013.01)
Citation (search report)
- [A] US 4450088 A 19840522 - WILSON JOE C [US], et al
- [A] EP 0229440 A1 19870722 - TEXACO DEVELOPMENT CORP [US], et al
- [A] EP 0328872 A1 19890823 - BURDA PAUL A
- [A] GB 1133385 A 19681113 - FUJI IRON & STEEL COMPANY LTD
- [DA] EP 0124851 A2 19841114 - HENKEL KGAA [DE] & US 4578208 A 19860325 - GEKE JUEERGEN [DE], et al
- [A] EP 0552988 A1 19930728 - BP CHEM INT LTD [GB], et al
Designated contracting state (EPC)
AT BE DE ES FR GB IE IT NL PT
DOCDB simple family (publication)
EP 0683246 A1 19951122; EP 0683246 B1 20000719; AT E194858 T1 20000815; CA 2143471 A1 19951121; DE 69518036 D1 20000824; DE 69518036 T2 20010322; ES 2148433 T3 20001016; PT 683246 E 20001130
DOCDB simple family (application)
EP 95301519 A 19950308; AT 95301519 T 19950308; CA 2143471 A 19950227; DE 69518036 T 19950308; ES 95301519 T 19950308; PT 95301519 T 19950308