Global Patent Index - EP 1751327 A1

EP 1751327 A1 20070214 - COLOURED CONVERSION LAYERS ON METALLIC SURFACES

Title (en)

COLOURED CONVERSION LAYERS ON METALLIC SURFACES

Title (de)

FARBIGE KONVERSIONSSCHICHTEN AUF METALLOBERFLÄCHEN

Title (fr)

COUCHES DE CONVERSION COLOREES SUR DES SURFACES METALLIQUES

Publication

EP 1751327 A1 20070214 (DE)

Application

EP 05707023 A 20050127

Priority

  • EP 2005000769 W 20050127
  • DE 102004022565 A 20040507

Abstract (en)

[origin: WO2005116294A1] The invention relates to a chromium-free treatment solution for producing coloured or fluorescent anticorrosive layers on metallic surfaces, said solution containing a) phosphorus acid and/or at least one fluoroacid of at least one element of the group containing B, Si, Ti, Zr and Hf or respectively the anions thereof, and b) at least one organic polymer, said organic polymer carrying covalently bonded, chromophoric or fluorescent groups and being able to bind to the metallic surface by means of oxygen and/or nitrogen atoms. The invention also relates to a method for producing chromophoric or fluorescent anticorrosive layers on metallic surfaces, whereby the metallic surfaces are brought into contact with one such treatment solution. The invention further relates to a metallic element, the surface thereof comprising a coloured or fluorescent anticorrosive layer which is obtained according to said method.

IPC 8 full level

C23C 22/34 (2006.01); C08F 220/06 (2006.01); C09D 5/08 (2006.01); C09D 7/00 (2006.01); C23C 22/77 (2006.01)

CPC (source: EP US)

C23C 22/34 (2013.01 - EP US); C23C 22/77 (2013.01 - EP US)

Citation (search report)

See references of WO 2005116294A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2005116294 A1 20051208; CN 1950543 A 20070418; DE 102004022565 A1 20051222; EP 1751327 A1 20070214; US 2007095435 A1 20070503

DOCDB simple family (application)

EP 2005000769 W 20050127; CN 200580014383 A 20050127; DE 102004022565 A 20040507; EP 05707023 A 20050127; US 59369006 A 20061107