Global patent index - EP 1036215 A2

EP 1036215 A2 2000-09-20 - CHROMIUM-FREE CORROSION PROTECTION AGENT AND METHOD FOR PROVIDING CORROSION PROTECTION

Title (en)

CHROMIUM-FREE CORROSION PROTECTION AGENT AND METHOD FOR PROVIDING CORROSION PROTECTION

Title (de)

CHROMFREIES KORROSIONSSCHUTZMITTEL UND KORROSIONSSCHUTZVERFAHREN

Title (fr)

AGENT ANTICORROSION EXEMPT DE CHROME ET PROCEDE DE PROTECTION CONTRE LA CORROSION

Publication

EP 1036215 A2 (DE)

Application

EP 98965188 A

Priority

  • DE 19754108 A
  • EP 9807643 W

Abstract (en)

[origin: DE19754108A1] The invention relates to a chromium-free aqueous corrosion protection agent for treating galvanised or alloy galvanised steel surfaces or aluminium surfaces. Said agent contains the following essential constituents: a) 0.5 to 10 g/l hexafluoro-anions of titanium (IV) and/or zircon (IV), b) 5 to 15 g/l vanadium ions, c) 0.5 to 2 g/l transition metal ions, preferably Mn, Fe, Co, d) 30 to 150 g/l phosphoric acid and/or phosphonic acid. The inventive corrosion protection agent preferably also contains an organic film former, especially with a polyacrylate base; and a conductivity pigment. The agent is particularly suitable for treating metal strips in order to protect them against corrosion, with or without subsequent painting, and is preferably applied in such a way as to produce a dry layer coating of 0.5 to 5 g/m<2> on the surface.

IPC 1-7 (main, further and additional classification)

C23C 22/00

IPC 8 full level (invention and additional information)

C23C 22/44 (2006.01); C23C 22/34 (2006.01); C23C 22/36 (2006.01); C23C 22/40 (2006.01)

CPC (invention and additional information)

C23C 22/44 (2013.01)

Citation (search report)

See references of WO 9929927A3

Designated contracting state (EPC)

AT BE DE ES FR GB IT SE

EPO simple patent family

DE 19754108 A1 19990610; AR 010965 A1 20000712; AU 2050299 A 19990628; CA 2312807 A1 19990617; EP 1036215 A2 20000920; JP 2001526324 A 20011218; WO 9929927 A2 19990617; WO 9929927 A3 19990812

INPADOC legal status

2002-12-18 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20020725

2002-03-13 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020131

2000-09-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000527

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE DE ES FR GB IT SE