EP 0966554 A1 19991229 - AQUEOUS PHOSPHATING COMPOSITION AND PROCESS FOR METAL SURFACES
Title (en)
AQUEOUS PHOSPHATING COMPOSITION AND PROCESS FOR METAL SURFACES
Title (de)
WÄSSRIGE PHOSPHATISIERUNGSZUSAMMENSETZUNG UND VERFAHREN FÜR METALLISCHE OBERFLÄCHEN
Title (fr)
COMPOSITION AQUEUSE DE PHOSPHATATION ET PROCEDE POUR SURFACES METALLIQUES
Publication
Application
Priority
- JP 1135797 A 19970124
- US 9800903 W 19980122
Abstract (en)
[origin: WO9832894A1] An aqueous zinc phosphate conversion coating that contains 5 to 50 g/L of phosphate ions, 0.2 to 10 g/L of zinc ions, and 0.5 to 4.0 g/L as hydroxylamine of a hydroxylamine source, and also: (1) contains 0.01 to 5.0 g/L polycarboxylic acid or salt thereof and/or starch phosphate; or (2) has a zinc ions/phosphate ions weight ratio below 0.27 and a zinc ions concentration of at least 2.0 g/L forms high quality zinc phosphating coatings on metal surfaces even if the surfaces have not been previously conditioned by contact with a dispersion of colloidal titanium.
IPC 1-7
IPC 8 full level
C23C 22/12 (2006.01); C23C 22/17 (2006.01); C23C 22/18 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP)
C23C 22/12 (2013.01); C23C 22/17 (2013.01); C23C 22/184 (2013.01); C23C 22/362 (2013.01); C23C 22/364 (2013.01); C23C 22/365 (2013.01)
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
WO 9832894 A1 19980730; CA 2277967 A1 19980730; EP 0966554 A1 19991229; EP 0966554 A4 20000405; JP H10204649 A 19980804
DOCDB simple family (application)
US 9800903 W 19980122; CA 2277967 A 19980122; EP 98905967 A 19980122; JP 1135797 A 19970124