EP 3168328 A1 20170517 - ETCHING AGENT AND REPLENISHING LIQUID
Title (en)
ETCHING AGENT AND REPLENISHING LIQUID
Title (de)
ÄTZMITTEL UND NACHFÜLLFLÜSSIGKEIT
Title (fr)
AGENT D'ATTAQUE ET LIQUIDE D'ENTRETIEN
Publication
Application
Priority
- JP 2014140947 A 20140708
- JP 2015066299 W 20150605
Abstract (en)
Disclosed is an etching agent for steel. The etching agent is an acidic aqueous solution including ferrous ions, ferric ions, and an acetylene group-containing water-soluble compound. The concentration of ferrous ion A% by weight and the concentration of ferric ion B% by weight in the etching agent is preferably from 0.1 to 2.5. Also disclosed is a replenishing liquid that is added to the etching agent when the etching agent is continuously or repeatedly used. The replenishing liquid is an aqueous solution including an acetylene group-containing water-soluble compound.
IPC 8 full level
C23F 1/28 (2006.01)
CPC (source: EP KR US)
C23F 1/28 (2013.01 - EP KR US); C23G 1/088 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3168328 A1 20170517; EP 3168328 A4 20180321; CN 106661739 A 20170510; JP 2016017209 A 20160201; KR 20170028881 A 20170314; TW 201606136 A 20160216; US 2017167033 A1 20170615; WO 2016006373 A1 20160114
DOCDB simple family (application)
EP 15818704 A 20150605; CN 201580037324 A 20150605; JP 2014140947 A 20140708; JP 2015066299 W 20150605; KR 20167034438 A 20150605; TW 104119551 A 20150617; US 201515323856 A 20150605