EP 0396238 A1 19901107 - Method for treating aluminium surfaces.
Title (en)
Method for treating aluminium surfaces.
Title (de)
Verfahren zur Behandlung von Aluminiumoberflächen.
Title (fr)
Procédé pour le traitement de surfaces en aluminium.
Publication
Application
Priority
GB 8906160 A 19890317
Abstract (en)
Solutions of hydrogen peroxide in sulphuric acid are used to treat aluminium metal, to form an artificially applied oxide layer having a profiled surface with protrusions which is very suitable for adhesive bonding or the application of organic coatings. A copper salt may be used as an accelerator, alone or with an amine. Treatment may be effected at temperatures up to 90<o>C. An inorganic coating may be applied to overlie and protect the profiled oxide layer. An advantage is the possibility of using aluminium metal without a prior cleaning step.
IPC 1-7
IPC 8 full level
C23C 20/02 (2006.01); C23C 22/56 (2006.01); C23C 28/04 (2006.01)
CPC (source: EP KR)
C23C 20/00 (2013.01 - KR); C23C 22/56 (2013.01 - EP)
Citation (search report)
- [YD] EP 0034040 A1 19810819 - BNF METALS TECH CENTRE [GB]
- [Y] EP 0267868 A2 19880518 - UNITED TECHNOLOGIES CORP [US]
- [A] EP 0273698 A2 19880706 - ALBRIGHT & WILSON [GB]
- [A] CH 540350 A 19730815 - ITO HIKARU [JP]
- [A] FR 1567752 A 19690516
- [A] GB 2032963 A 19800514 - DART IND INC
- [YD] CHEMICAL ABSTRACTS, vol. 90, no. 2, 8th January 1979, page 77, résumé no. 7748s, Columbus, Ohio, US; & JP-A-78 97 037 (ASAHI GLASS CO., LTD) 24-08-1978
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0396238 A1 19901107; AU 5135390 A 19900920; BR 9001268 A 19910326; CA 2012413 A1 19900917; CN 1045817 A 19901003; GB 8906160 D0 19890504; JP H0320480 A 19910129; KR 900014630 A 19901024; NO 901243 D0 19900316; NO 901243 L 19900918
DOCDB simple family (application)
EP 90302769 A 19900315; AU 5135390 A 19900316; BR 9001268 A 19900319; CA 2012413 A 19900316; CN 90102297 A 19900317; GB 8906160 A 19890317; JP 6799890 A 19900317; KR 900003674 A 19900317; NO 901243 A 19900316