EP 0454211 B1 19940622 - Process for applying phosphate coatings on metal surfaces.
Title (en)
Process for applying phosphate coatings on metal surfaces.
Title (de)
Verfahren zum Aufbringen von Phosphatüberzügen auf Metalloberflächen.
Title (fr)
Procédé pour appliquer des couches de phosphates sur des surfaces métalliques.
Publication
Application
Priority
DE 4012795 A 19900421
Abstract (en)
[origin: CA2040859A1] The activating agent which is based on titanium(IV) phosphate and intended for use in the activation of metal surfaces before a zinc phosphating treatment contains one or more copper compounds and has a Ti:Cu weight ratio of 1:100 to 60:1 and optionally contains in addition at least one of the components consisting of condensed phosphate, silicate, complexing agent, water-soluble organic polymer, thickening agent, and surfactant. It is used to prepare aqueous activating baths for activating iron, steel, galvanized steel, zinc, alloy-plated steel, aluminum-plated steel and aluminum before a zinc phosphating treatment, which baths contain 0.001 to 0.060 g/l Ti, 0.020 to 1.2 g/l orthophosphate (calculated as P2O5), and 0.001 to 0.1 g/l Cu and so much alkali that the bath has a pH value of 7 to 11, preferably of 7.5 to 10.
IPC 1-7
IPC 8 full level
C23C 22/80 (2006.01); C23C 22/18 (2006.01); C23C 22/36 (2006.01); F16L 37/084 (2006.01); F16L 37/098 (2006.01); F16L 37/12 (2006.01)
CPC (source: EP US)
C23C 22/80 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI SE
DOCDB simple family (publication)
EP 0454211 A1 19911030; EP 0454211 B1 19940622; AT E107711 T1 19940715; BR 9101616 A 19911210; CA 2040859 A1 19911022; CA 2040859 C 20001121; CA 2040872 A1 19911022; DE 4012795 A1 19911024; DE 59101978 D1 19940728; ES 2055518 T3 19940816; JP 3063921 B2 20000712; JP H04254589 A 19920909; US 5160551 A 19921103; ZA 912943 B 19921230
DOCDB simple family (application)
EP 91200844 A 19910411; AT 91200844 T 19910411; BR 9101616 A 19910422; CA 2040859 A 19910419; CA 2040872 A 19910419; DE 4012795 A 19900421; DE 59101978 T 19910411; ES 91200844 T 19910411; JP 11801391 A 19910422; US 68682591 A 19910417; ZA 912943 A 19910419