EP 0483568 B1 19950920 - Method of producing brown coating layers on copper.
Title (en)
Method of producing brown coating layers on copper.
Title (de)
Verfahren zur Herstellung von braunen Deckschichten auf Kupfer.
Title (fr)
Procédé pour la réalisation de revêtements bruns sur du cuivre.
Publication
Application
Priority
DE 4034249 A 19901027
Abstract (en)
[origin: EP0483568A1] For the controlled large-scale production of a uniform and firmly adhering brown covering layer (brown patina) on surfaces of semifinished copper products, especially on rolled strip or sheet for the building sector, the process according to the invention provides for first roughening the surface of the semifinished copper product by mechanical treatment and then subjecting the semifinished copper product to a heat treatment for a period of 0.1 to 30 minutes at a temperature within the range from 150 to 650 DEG C. <??>This method makes it possible to provide semifinished copper products preweathered in the works, without having to wait for the brown surface discolouration which depends on the long-term action of atmospheric influences. <??>For a further improvement in the adhesive strength of the brown patina, the semifinished copper product can advantageously also be subjected to a chemical further oxidation after the heat treatment.
IPC 1-7
IPC 8 full level
C23C 8/02 (2006.01); C23C 8/10 (2006.01); C23C 8/80 (2006.01); C23C 22/00 (2006.01); E04D 1/28 (2006.01); E04D 3/16 (2006.01); E04D 3/30 (2006.01)
CPC (source: EP US)
Citation (examination)
K. Dies: "Kupfer und Kupferlegierungen in der Technik", Springer Verlag, Berlin/Heidelberg/New York (1967), Seiten 164-167, Kapitel 4.6.1.1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0483568 A1 19920506; EP 0483568 B1 19950920; AT E128192 T1 19951015; AU 633764 B2 19930204; AU 8677691 A 19920430; CA 2054166 A1 19920428; CA 2054166 C 19990817; DE 4034249 A1 19920430; DE 59106523 D1 19951026; DK 0483568 T3 19960102; ES 2077133 T3 19951116; FI 914862 A0 19911015; FI 914862 A 19920428; FI 96777 B 19960515; FI 96777 C 19960826; GR 3018053 T3 19960229; JP 3111094 B2 20001120; JP H05339701 A 19931221; NO 303787 B1 19980831; NO 914196 D0 19911025; NO 914196 L 19920428; PT 99330 A 19920930; PT 99330 B 19990226; RU 2023750 C1 19941130; US 5282890 A 19940201; ZA 917973 B 19920624
DOCDB simple family (application)
EP 91117338 A 19911011; AT 91117338 T 19911011; AU 8677691 A 19911025; CA 2054166 A 19911024; DE 4034249 A 19901027; DE 59106523 T 19911011; DK 91117338 T 19911011; ES 91117338 T 19911011; FI 914862 A 19911015; GR 950403151 T 19951109; JP 28007091 A 19911025; NO 914196 A 19911025; PT 9933091 A 19911025; SU 5001722 A 19911016; US 78300291 A 19911028; ZA 917973 A 19911004