EP 0347663 B1 19930818 - METHOD FOR SEALING-IN ANODISED FILMS ON ALUMINIUM AND ALUMINIUM ALLOYS
Title (en)
METHOD FOR SEALING-IN ANODISED FILMS ON ALUMINIUM AND ALUMINIUM ALLOYS
Publication
Application
Priority
DE 3820650 A 19880618
Abstract (en)
[origin: EP0347663A1] The invention relates to a method for sealing-in decorative anodised films on aluminium and aluminium alloy surfaces in aqueous solutions containing phosphonic acids or their alkali metal and/or alkanolamine salts at elevated temperature in solutions containing 1-phosphonopropane-1,2,3-tricarboxylic acid and/or 1,1-3-diphosphonopropane-2,2-dicarboxylic acid as sealing coating inhibitor.
IPC 1-7
IPC 8 full level
C25D 11/18 (2006.01); C25D 11/24 (2006.01)
CPC (source: EP KR US)
C25D 11/18 (2013.01 - KR); C25D 11/246 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0347663 A1 19891227; EP 0347663 B1 19930818; AT E93281 T1 19930915; AU 3647889 A 19891221; AU 609313 B2 19910426; CA 1338442 C 19960709; DE 3820650 A1 19891221; DE 58905303 D1 19930923; ES 2058394 T3 19941101; JP H0243397 A 19900213; KR 900000509 A 19900130; NO 176928 B 19950313; NO 176928 C 19950621; NO 892509 D0 19890616; NO 892509 L 19891219; NZ 229570 A 19901026; TR 23838 A 19900925; US 4939001 A 19900703; ZA 894616 B 19900228
DOCDB simple family (application)
EP 89110451 A 19890609; AT 89110451 T 19890609; AU 3647889 A 19890616; CA 603114 A 19890616; DE 3820650 A 19880618; DE 58905303 T 19890609; ES 89110451 T 19890609; JP 15811889 A 19890619; KR 890008388 A 19890617; NO 892509 A 19890616; NZ 22957089 A 19890615; TR 47889 A 19890606; US 36586989 A 19890614; ZA 894616 A 19890616