EP 3724371 A1 20201021 - BORIC ACID-FREE COMPOSITION FOR REMOVING DEPOSITS CONTAINING CRYOLITE
Title (en)
BORIC ACID-FREE COMPOSITION FOR REMOVING DEPOSITS CONTAINING CRYOLITE
Title (de)
BORSÄUREFREIE ZUSAMMENSETZUNG ZUR ENTFERNUNG VON KRYOLITHHALTIGEN ABLAGERUNGEN
Title (fr)
COMPOSITION SANS ACIDE BORIQUE POUR ÉLIMINER DES DÉPÔTS CONTENANT DE LA CRYOLITHE
Publication
Application
Priority
- EP 17206616 A 20171212
- EP 2018084005 W 20181207
Abstract (en)
[origin: WO2019115395A1] The invention relates to an aqueous composition for removing deposits containing cryolite from systems or system parts which are used in conversion treatment of metal surfaces, which contain a) at least one mineral acid and b) at least one dicarboxylic acid of the formula HOOC-(CH2)x-COOH, wherein x = 0 to 3 and no compounds containing borate were added to the composition, and a corresponding method for removing deposits containing cryolite.
IPC 8 full level
C23G 1/02 (2006.01); C11D 1/00 (2006.01); C23C 22/73 (2006.01)
CPC (source: EP KR US)
B08B 3/08 (2013.01 - US); C11D 1/72 (2013.01 - KR); C11D 3/0073 (2013.01 - KR); C11D 3/042 (2013.01 - EP KR US); C11D 3/048 (2013.01 - KR); C11D 3/2041 (2013.01 - KR); C11D 3/2082 (2013.01 - EP KR US); C11D 3/323 (2013.01 - KR); C11D 7/08 (2013.01 - EP); C11D 7/265 (2013.01 - EP); C23C 22/73 (2013.01 - EP); C23C 22/78 (2013.01 - KR); C23G 1/02 (2013.01 - EP KR US); C23G 1/06 (2013.01 - KR); B08B 2203/007 (2013.01 - US); C11D 2111/16 (2024.01 - KR)
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)
WO 2019115395 A1 20190620; BR 112020009513 A2 20201013; CN 111417744 A 20200714; CN 111417744 B 20230317; EP 3724371 A1 20201021; JP 2021505774 A 20210218; JP 7394761 B2 20231208; KR 102655537 B1 20240409; KR 20200097258 A 20200818; MX 2020006184 A 20200903; RU 2020122251 A 20220113; US 11434573 B2 20220906; US 2020385872 A1 20201210
DOCDB simple family (application)
EP 2018084005 W 20181207; BR 112020009513 A 20181207; CN 201880076195 A 20181207; EP 18812176 A 20181207; JP 2020532630 A 20181207; KR 20207016464 A 20181207; MX 2020006184 A 20181207; RU 2020122251 A 20181207; US 201816769966 A 20181207