EP 0015020 B1 19830223 - PROCESS FOR THE SURFACE TREATMENT OF METALS AND ITS USE FOR THE TREATMENT OF ALUMINIUM SURFACES
Title (en)
PROCESS FOR THE SURFACE TREATMENT OF METALS AND ITS USE FOR THE TREATMENT OF ALUMINIUM SURFACES
Publication
Application
Priority
DE 2905535 A 19790214
Abstract (en)
[origin: US4264378A] A chromium-free process for phosphatizing a metal surface provides for applying to the surface an aqueous acidic solution having pH 1.5 to 3.0 and containing phosphate; a metal cation of valence two or greater; molybdate, tungstate, vanadate, niobate or tantalate ions; and drying the solution on the surface without rinsing.
IPC 1-7
IPC 8 full level
B05D 3/02 (2006.01); C23C 22/08 (2006.01); C23C 22/12 (2006.01); C23C 22/18 (2006.01); C23C 22/20 (2006.01); C23C 22/22 (2006.01); C23C 22/42 (2006.01); C23C 22/44 (2006.01)
CPC (source: EP US)
C23C 22/08 (2013.01 - EP US); C23C 22/42 (2013.01 - EP US); C23C 22/44 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR SE
DOCDB simple family (publication)
EP 0015020 A1 19800903; EP 0015020 B1 19830223; EP 0015020 B2 19860205; CA 1133362 A 19821012; DE 2905535 A1 19800904; DE 3062096 D1 19830331; GB 2041987 A 19800917; GB 2041987 B 19830727; IT 1149291 B 19861203; IT 8019877 A0 19800213; JP S55131176 A 19801011; JP S5931593 B2 19840802; US 4264378 A 19810428
DOCDB simple family (application)
EP 80200096 A 19800205; CA 345534 A 19800212; DE 2905535 A 19790214; DE 3062096 T 19800205; GB 8004613 A 19800212; IT 1987780 A 19800213; JP 1716280 A 19800214; US 12156980 A 19800214