EP 0209143 A3 19881026 - SURFACE TREATMENT PROCESS FOR A SHEET IRON ZINC-ALUMINIUM ALLOY COATING
Title (en)
SURFACE TREATMENT PROCESS FOR A SHEET IRON ZINC-ALUMINIUM ALLOY COATING
Publication
Application
Priority
JP 15801685 A 19850719
Abstract (en)
[origin: EP0209143A2] A steel sheet carrying a coating of an alloy of zinc and aluminium is pretreated with an aqueous alkaline solution containing polyvalent metal ions held in solution by a sequestering agent and is then coated with an aqueous chromate solution that contains silica and that is dried on to the surface.
IPC 1-7
IPC 8 full level
C23C 22/24 (2006.01); C23C 22/30 (2006.01); C23C 22/60 (2006.01); C23C 22/78 (2006.01)
CPC (source: EP)
C23C 22/60 (2013.01); C23C 22/73 (2013.01); C23C 22/83 (2013.01)
Citation (search report)
- [Y] FR 1596007 A 19700615
- [Y] US 4227946 A 19801014 - WILLIAMSON STANLEY C
- [XP] EP 0154384 A2 19850911 - METALLGESELLSCHAFT AG [DE], et al
- [XP] PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 178 (C-355)[2234], 21. Juni 1986; & JP-A-61 26 784 (NIPPON PAINT CO., LTD) 06-02-1986
- [XP] PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 292 (C-376)[2348], 3. Oktober 1986; & JP-A-61 110 777 (KAWASAKI STEEL CORP.) 29-05-1986
Designated contracting state (EPC)
BE DE FR IT NL SE
DOCDB simple family (publication)
EP 0209143 A2 19870121; EP 0209143 A3 19881026; EP 0209143 B1 19910619; AU 6008486 A 19870122; BR 8603404 A 19870224; DE 3624101 A1 19870122; DE 3679866 D1 19910725; GB 2178065 A 19870204; GB 2178065 B 19890719; GB 8617211 D0 19860820; JP H0351797 B2 19910807; JP S6220880 A 19870129
DOCDB simple family (application)
EP 86109842 A 19860717; AU 6008486 A 19860711; BR 8603404 A 19860718; DE 3624101 A 19860717; DE 3679866 T 19860717; GB 8617211 A 19860715; JP 15801685 A 19850719