EP 0433118 A1 19910619 - Chemical metal substrate conversion process, bath used therefor and concentrate for preparing the bath.
Title (en)
Chemical metal substrate conversion process, bath used therefor and concentrate for preparing the bath.
Title (de)
Verfahren zur chemischen Konversion von Metallgegenständen, verwendetes Bad dafür und Konzentrat zur Herstellung des Bades.
Title (fr)
Procédé de conversion chimique de substrats métalliques, bain mis en oeuvre dans ce procédé et concentré pour la préparation du bain.
Publication
Application
Priority
FR 8915042 A 19891116
Abstract (en)
Chemical conversion process characterised in that it comprises the use, at the time of the actual phosphatising stage, of a zinc conversion bath containing phosphate and nitrate ions as well as ferrous or ferric ions and from approximately 21 to approximately 100 g/l of at least one organic chelating agent.
Abstract (fr)
Procédé de conversion chimique caractérisé par le fait qu'il comporte la mise en oeuvre, au moment de l'étape de phosphatation proprement dite, d'un bain de conversion au zinc contenant des ions phosphates et nitrate ainsi que des ions ferreux ou ferriques et d'environ 21 à environ 100 g/l d'au moins un agent chélatant organique.
IPC 1-7
IPC 8 full level
C23C 22/13 (2006.01); C23C 22/17 (2006.01); C23C 22/18 (2006.01); C23C 22/47 (2006.01)
CPC (source: EP)
C23C 22/17 (2013.01); C23C 22/182 (2013.01); C23C 22/47 (2013.01)
Citation (search report)
- [X] US 3116178 A 19631231 - UPHAM WESLEY B
- [YD] FR 1362202 A 19640529 - PARKER STE CONTINENTALE
- [A] DE 975008 C 19610803 - AMERICAN CHEM PAINT CO
- [AD] FR 1585660 A 19700130
- [A] US 3767476 A 19731023 - WAGNER L, et al
- [X] METAL FINISHING ABSTRACTS, vol. 26, no. 6, novembre/décembre 1984, page 390, Teddington, Middlesex, GB; & SU-A-1090 761 (F.F. AZHOGIN) 19-07-1982
Designated contracting state (EPC)
AT BE DE ES GB IT NL SE
DOCDB simple family (publication)
EP 0433118 A1 19910619; EP 0433118 B1 19960110; AT E132917 T1 19960115; CA 2030126 A1 19910517; CA 2030126 C 19990511; DE 69024774 D1 19960222; DE 69024774 T2 19960704; ES 2084680 T3 19960516; FR 2654440 A1 19910517; FR 2654440 B1 19930730; JP H03173778 A 19910729; JP H0730454 B2 19950405
DOCDB simple family (application)
EP 90403233 A 19901115; AT 90403233 T 19901115; CA 2030126 A 19901116; DE 69024774 T 19901115; ES 90403233 T 19901115; FR 8915042 A 19891116; JP 30895390 A 19901116