EP 0960220 A1 19991201 - HYDROXYLAMINE STABILIZERS IN COPPER-CONTAINING PHOSPHATING SOLUTIONS
Title (en)
HYDROXYLAMINE STABILIZERS IN COPPER-CONTAINING PHOSPHATING SOLUTIONS
Title (de)
STABILISATOREN FÜR HYDROXYLAMIN IN KUPFER-HALTIGEN PHOSPHATIERLÖSUNGEN
Title (fr)
AGENTS STABILISANTS POUR L'HYDROXYLAMINE DANS DES SOLUTIONS DE PHOSPHATATION CONTENANT DU CUIVRE
Publication
Application
Priority
- DE 19700326 A 19970108
- EP 9707185 W 19971219
Abstract (en)
[origin: DE19700326A1] The invention concerns an acid aqueous phosphating solution which contains zinc ions, phosphate ions, copper ions and hydroxylamine in free form, as a salt or hydroxylamine-cleaving compound, and additionally one or a plurality of hydroxylamine stabilizers selected from organic molecules having at least two heteroatoms per molecule or, in the case of polymers, at least one heteroatom per four carbon atoms. The invention also concerns an aqueous concentrate and an aqueous supplementary solution for the phosphating solution.
IPC 1-7
IPC 8 full level
C01B 25/37 (2006.01); C09D 1/00 (2006.01); C23C 22/12 (2006.01); C23C 22/36 (2006.01)
CPC (source: EP)
C23C 22/12 (2013.01); C23C 22/364 (2013.01)
Citation (search report)
See references of WO 9830732A1
Designated contracting state (EPC)
BE DE ES FR GB IT
DOCDB simple family (publication)
DE 19700326 A1 19980709; AU 5859098 A 19980803; BR 9714199 A 20000328; CA 2277336 A1 19980716; EP 0960220 A1 19991201; JP 2002500702 A 20020108; TR 199901460 T2 19991122; WO 9830732 A1 19980716
DOCDB simple family (application)
DE 19700326 A 19970108; AU 5859098 A 19971219; BR 9714199 A 19971219; CA 2277336 A 19971219; EP 9707185 W 19971219; EP 97954444 A 19971219; JP 53050498 A 19971219; TR 9901460 T 19971219