EP 0085626 B1 19861112 - COMPOSITION AND PROCESS FOR TREATING PHOSPHATED METALLIC SURFACES
Title (en)
COMPOSITION AND PROCESS FOR TREATING PHOSPHATED METALLIC SURFACES
Publication
Application
Priority
FR 8201476 A 19820129
Abstract (en)
[origin: US4497666A] The invention relates to a composition and a process for the treatment, more precisely the "post-treatment" of phosphatized metal surfaces, particularly when the surfaces must be subsequently covered with a coat of paint. It relates also to a process for the preparation of the composition and a concentrate useful for this preparation. The composition comprises an effective proportion of trivalent titanium compound and it is presented with an acid pH, the proportion of said compound being sufficient for the corresponding composition to confer on the treated metal surface a protection equivalent to that obtained with known chromatizing solutions. More particularly, the composition contains trivalent titanium at a concentration of 0.01 to 2 g/l, preferably from 0.2 to 0.6 g/l and has a pH of 2 to 7. Reducing means can be arranged to regenerate the trivalent titanium in the treatment solution continuously.
IPC 1-7
IPC 8 full level
C23C 22/82 (2006.01); C23C 22/83 (2006.01)
CPC (source: EP US)
C23C 22/83 (2013.01 - EP US)
Citation (examination)
- Gmelins Handbuch der anorganischen Chemie, vol. 41 (1951), pages 373, 413
- Römpps Chemie-Lexikon (1977), pages 3608, 3609, 3612
Designated contracting state (EPC)
AT BE DE GB IT NL SE
DOCDB simple family (publication)
EP 0085626 A1 19830810; EP 0085626 B1 19861112; AT E23574 T1 19861115; CA 1197674 A 19851210; DE 3367630 D1 19870102; FR 2520758 A1 19830805; FR 2520758 B1 19840427; JP S58136781 A 19830813; US 4497666 A 19850205
DOCDB simple family (application)
EP 83400204 A 19830128; AT 83400204 T 19830128; CA 420493 A 19830128; DE 3367630 T 19830128; FR 8201476 A 19820129; JP 1256283 A 19830128; US 46208883 A 19830128