EP 0974680 B1 20021009 - Process for the electrolytic production of cyanide in nitrocarburizing molten baths
Title (en)
Process for the electrolytic production of cyanide in nitrocarburizing molten baths
Title (de)
Verfahren zur elektrolytischen Erzeugung von Cyanid in Nitrocarburierschmelzen
Title (fr)
Procédé de production de cyanure dans des bains fondus de nitrocarburation
Publication
Application
Priority
DE 19832404 A 19980718
Abstract (en)
[origin: US6159355A] In order to shorten the waiting times until the equilibrium between cyanate and cyanide is established and to limit the use of substances and products containing cyanide for nitrocarburizing in salt melts, melts containing only cyanate and optionally carbonate are electrolyzed at a current density of 4 to 100 A/dm2 of electrode area to form an advantageous cyanide content of 1 to 5 wt. %.
IPC 1-7
IPC 8 full level
C23C 8/54 (2006.01); C25B 1/00 (2006.01); C25B 11/10 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
US 6159355 A 20001212; AT E225869 T1 20021015; BR 9902971 A 20000425; CA 2277495 A1 20000118; DE 19832404 C1 19991021; DE 59902998 D1 20021114; EP 0974680 A1 20000126; EP 0974680 B1 20021009; ES 2183462 T3 20030316; JP 2000054109 A 20000222; TR 199901661 A2 20000221; ZA 994621 B 20000114
DOCDB simple family (application)
US 35479599 A 19990716; AT 99112333 T 19990626; BR 9902971 A 19990716; CA 2277495 A 19990716; DE 19832404 A 19980718; DE 59902998 T 19990626; EP 99112333 A 19990626; ES 99112333 T 19990626; JP 20166299 A 19990715; TR 9901661 A 19990715; ZA 994621 A 19990716