EP 0789094 A1 19970813 - AQUEOUS ACID CLEANING SOLUTION FOR ALUMINUM METAL AND METHOD FOR CLEANING THE METAL
Title (en)
AQUEOUS ACID CLEANING SOLUTION FOR ALUMINUM METAL AND METHOD FOR CLEANING THE METAL
Title (de)
WÄSSRIGE SÄURE REINIGUNGSLÖSUNG FÜR ALUMINIUM UND REINIGUNGSVERFAHREN
Title (fr)
SOLUTION AQUEUSE ET ACIDE SERVANT A NETTOYER DE L'ALUMINIUM ET METHODE DE NETTOYAGE AFFERENTE
Publication
Application
Priority
- JP 9501171 W 19950612
- JP 25634694 A 19941021
Abstract (en)
An aqueous acid cleaning solution for aluminum metals which contains oxidized metal ions as an etching accelerator and does not contain hazardous fluorine and chromium ions. The solution contains an inorganic acid, oxidized metal ions, a chelate dispersant, if necessary a surfactant, and further an oxidizing agent for the metal ions reduced by cleaning. The dispersant has the effect of inhibiting the formation of a sludge from the oxidized metal, thus permitting the preparation of a sludge-free aqueous acid cleaning solution.
IPC 1-7
IPC 8 full level
C23G 1/12 (2006.01)
CPC (source: EP KR)
C23F 1/20 (2013.01 - KR); C23G 1/12 (2013.01 - KR); C23G 1/125 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9612832 A1 19960502; CN 1063236 C 20010314; CN 1170443 A 19980114; EP 0789094 A1 19970813; EP 0789094 A4 19980114; KR 100231390 B1 19991201; KR 970707324 A 19971201
DOCDB simple family (application)
JP 9501171 W 19950612; CN 95196828 A 19950612; EP 95921156 A 19950612; KR 19970702506 A 19970417