Global Patent Index - EP 0754779 B1

EP 0754779 B1 19980909 - Process for treating steel sheet surfaces which are partially coated by zinc or a zinc alloy

Title (en)

Process for treating steel sheet surfaces which are partially coated by zinc or a zinc alloy

Title (de)

Verfahren zur Oberflächenbehandlung von mit Zink oder Zinklegierung teilplattiertem Stahlblech

Title (fr)

Procédé de traitement de surface d'une tÔle d'acier revêtue partiellement de zinc ou d'alliage de zinc

Publication

EP 0754779 B1 19980909 (FR)

Application

EP 96401530 A 19960711

Priority

FR 9508822 A 19950721

Abstract (en)

[origin: EP0754779A1] A process for the surface treatment of partially zinc coated (one side) steel plate, is claimed. The plate is treated with an aq. inhibiting soln. to deposit a homogeneous film on the surface before final oil protection. The soln. contains an alkali salt of a 6-12 C linear aliphatic monocarboxylic acid, a hydrocarbyl triazole or diazole and a non-ionic surfactant, the pH of the soln. being maintained < 7.

IPC 1-7

C23F 11/10

IPC 8 full level

C23F 11/10 (2006.01)

CPC (source: EP US)

C23F 11/10 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

DOCDB simple family (publication)

EP 0754779 A1 19970122; EP 0754779 B1 19980909; AT E170933 T1 19980915; DE 69600613 D1 19981015; DE 69600613 T2 19990512; ES 2124071 T3 19990116; FR 2736935 A1 19970124; FR 2736935 B1 19970814; US 5683751 A 19971104

DOCDB simple family (application)

EP 96401530 A 19960711; AT 96401530 T 19960711; DE 69600613 T 19960711; ES 96401530 T 19960711; FR 9508822 A 19950721; US 68596196 A 19960722