EP 0966554 A4 20000405 - 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

EP 0966554 A4 20000405 (EN)

Application

EP 98905967 A 19980122

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

C23C 22/07; C23C 22/17; C23C 22/36; C23C 22/12

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)

Citation (search report)

[XY] DE 4433946 A1 19960328 - HENKEL KGAA [DE]
[XY] WO 9303198 A1 19930218 - HENKEL CORP [US]
[X] FR 1172741 A 19590213 - PARKER STE CONTINENTALE
[X] DE 4241134 A1 19940609 - HENKEL KGAA [DE]
[X] EP 0287133 A1 19881019 - METALLGESELLSCHAFT AG [DE]
[A] GB 1532758 A 19781122 - PYRENE CHEMICAL SERVICES LTD
[A] FR 2569203 A1 19860221 - PRODUITS IND CIE FSE [FR]
[A] FR 2022052 A1 19700724 - HOOKER CHEMICAL CORP
[PX] DE 19538778 A1 19970424 - HENKEL KGAA [DE]
[PX] DE 19540085 A1 19970430 - HENKEL KGAA [DE]
[PX] WO 9717480 A1 19970515 - HENKEL CORP [US], et al
[E] WO 9813534 A2 19980402 - HENKEL KGAA [DE], et al
[E] DE 19639597 A1 19980409 - HENKEL KGAA [DE], et al
See references of WO 9832894A1

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