EP 0276371 B1 19910320 - PROCESS FOR TREATING METAL SURFACE
Title (en)
PROCESS FOR TREATING METAL SURFACE
Publication
Application
Priority
JP 182487 A 19870109
Abstract (en)
[origin: EP0276371A1] An improved process for treating metal surface comprising a combination of the non-aqueous phosphating treatment and the non-aqueous chromic acid chemical conversion treatment is disclosed. The process is characterized in that the chromic acid chemical conversion treatment is carried out using a treatment solution in which chlorofluorinated hydrocarbon is used as the solvent and confers the metal surface with excellent adhesion property with regard to coating film or paint.
IPC 1-7
IPC 8 full level
C23C 22/03 (2006.01); C23C 22/04 (2006.01); C23C 22/73 (2006.01)
CPC (source: EP)
C23C 22/03 (2013.01); C23C 22/04 (2013.01)
Designated contracting state (EPC)
BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0276371 A1 19880803; EP 0276371 B1 19910320; DE 3768801 D1 19910425; JP H0551667 B2 19930803; JP S63171884 A 19880715; ZA 877722 B 19880420
DOCDB simple family (application)
EP 87114670 A 19871008; DE 3768801 T 19871008; JP 182487 A 19870109; ZA 877722 A 19871014