EP 1301655 B1 20040526 - A METHOD FOR ELECTROLYTIC GALVANISING USING ELECTROLYTES CONTAINING ALKANE SULPHONIC ACID
Title (en)
A METHOD FOR ELECTROLYTIC GALVANISING USING ELECTROLYTES CONTAINING ALKANE SULPHONIC ACID
Title (de)
VERFAHREN ZUR ELEKTROLYTISCHEN VERZINKUNG AUS ALKANSULFONSÄUREHALTIGEN ELEKTROLYTEN
Title (fr)
PROCEDE DE ZINGAGE ELECTROLYTIQUE A PARTIR D'ELECTROLYTES RENFERMANT DE L'ACIDE ALKYLSULFONIQUE
Publication
Application
Priority
- DE 10033433 A 20000710
- EP 0107876 W 20010709
Abstract (en)
[origin: WO0204713A2] The invention relates to a method for electrolytically coating metalswith zinc or a zinc alloy. Matt surfaces are obtained by depositing zinc from an electrolyte solution containing a zinc salt selected from zinc sulphate or an alkane sulphate of zinc or mixtures thereof and optionally other metal salts, an acid selected from sulphuric acid or an alkane sulphonic acid or a mixture of both acids and at least one additive for improving surface roughness and for avoiding dendritic edge growth, selected from surface active compounds containing nitrogen which can be ionic or non-ionic, anionic surface active compounds containing nitrogen, and surface active compounds derived from multi-fuctional alcohols with at least three hydroxy groups. The invention also relates to an electrolytic composition for an electrolytically coating of metals with zinc or zinc alloys, in addition to the use of the above-mentioned additives for improving surface roughness and avoiding dentritic edge growth when metals are electrolytically coated with zinc or a zinc alloy in an electrolyte containing alkane sulphonic acid.
[origin: WO0204713A2] The invention relates to a method for electrolytically coating metalswith zinc or a zinc alloy. Matt surfaces are obtained by depositing zinc from an electrolyte solution containing a zinc salt selected from zinc sulphate or an alkane sulphate of zinc or mixtures thereof and optionally other metal salts, an acid selected from sulphuric acid or an alkane sulphonic acid or a mixture of both acids and at least one additive for improving surface roughness and for avoiding dendritic edge growth, selected from surface active compounds containing nitrogen which can be ionic or non-ionic, anionic surface active compounds containing nitrogen, and surface active compounds derived from multi-fuctional alcohols with at least three hydroxy groups. The invention also relates to an electrolytic composition for an electrolytically coating of metals with zinc or zinc alloys, in addition to the use of the above-mentioned additives for improving surface roughness and avoiding dentritic edge growth when metals are electrolytically coated with zinc or a zinc alloy in an electrolyte containing alkane sulphonic acid.
IPC 1-7
IPC 8 full level
C25D 3/22 (2006.01); C25D 3/56 (2006.01); C25D 5/26 (2006.01)
CPC (source: EP US)
C25D 3/22 (2013.01 - EP US); C25D 3/565 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0204713 A2 20020117; WO 0204713 A3 20020815; AT E267895 T1 20040615; AU 2001291667 B2 20050714; AU 9166701 A 20020121; BR 0112349 A 20030701; CA 2415341 A1 20030109; CN 1188550 C 20050209; CN 1446272 A 20031001; DE 10033433 A1 20020124; DE 50102424 D1 20040701; EP 1301655 A2 20030416; EP 1301655 B1 20040526; ES 2220806 T3 20041216; JP 2004502876 A 20040129; MX PA03000018 A 20030714; PL 359778 A1 20040906; TW I229151 B 20050311; US 2003141195 A1 20030731; US 6811673 B2 20041102
DOCDB simple family (application)
EP 0107876 W 20010709; AT 01971759 T 20010709; AU 2001291667 A 20010709; AU 9166701 A 20010709; BR 0112349 A 20010709; CA 2415341 A 20010709; CN 01813870 A 20010709; DE 10033433 A 20000710; DE 50102424 T 20010709; EP 01971759 A 20010709; ES 01971759 T 20010709; JP 2002509564 A 20010709; MX PA03000018 A 20010709; PL 35977801 A 20010709; TW 90116858 A 20010710; US 33257803 A 20030110