EP 3449040 A1 20190306 - COMPOSITION FOR REDUCING THE REMOVAL OF MATERIAL BY PICKLING IN THE PICKLING OF METAL SURFACES THAT CONTAIN GALVANIZED AND/OR UNGALVANIZED STEEL
Title (en)
COMPOSITION FOR REDUCING THE REMOVAL OF MATERIAL BY PICKLING IN THE PICKLING OF METAL SURFACES THAT CONTAIN GALVANIZED AND/OR UNGALVANIZED STEEL
Title (de)
ZUSAMMENSETZUNG ZUR VERMINDERUNG DES BEIZABTRAGS BEIM BEIZEN VON METALLISCHEN OBERFLÄCHEN ENTHALTEND BLANKEN UND/ODER VERZINKTEN STAHL
Title (fr)
COMPOSITION PERMETTANT DE RÉDUIRE L'ENLÈVEMENT PAR DÉCAPAGE LORS DU DÉCAPAGE DE SURFACES MÉTALLIQUES CONTENANT DE L'ACIER NU ET/OU GALVANISÉ
Publication
Application
Priority
- DE 102016207429 A 20160429
- EP 2017060227 W 20170428
Abstract (en)
[origin: WO2017186929A1] The present invention relates to an aqueous composition for reducing the removal of material by pickling in the pickling of metal surfaces that contain galvanized and/or ungalvanized steel. Said composition contains a mixture of a compound of the formula I R1O-(CH2)x-CEC-(CH2)y-OR2 (I), wherein both R1 and R2 are H, with a compound of the formula I, wherein R1 and R2 independently of one another represent a HO-(CH2) W group with w > 2, and wherein in each of the two compounds of the formula I x and y are each independently 1 to 4. The invention also relates to a method for pickling a corresponding metal surface with a reduced removal of material by pickling.
IPC 8 full level
C23G 1/06 (2006.01); C23F 11/12 (2006.01); C23G 1/00 (2006.01); C23G 1/08 (2006.01); C23G 1/19 (2006.01); C23G 1/26 (2006.01)
CPC (source: EP KR RU US)
B08B 3/08 (2013.01 - US); C23F 1/28 (2013.01 - RU); C23G 1/00 (2013.01 - EP RU US); C23G 1/06 (2013.01 - EP KR RU US); C23G 1/061 (2013.01 - US); C23G 1/065 (2013.01 - EP KR RU US); C23G 1/068 (2013.01 - EP RU US); C23G 1/081 (2013.01 - EP KR RU US); C23G 1/19 (2013.01 - EP KR RU US); C23G 1/26 (2013.01 - EP KR RU US)
Citation (search report)
See references of WO 2017186929A1
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 2017186929 A1 20171102; BR 112018071497 A2 20190219; CN 109072454 A 20181221; CN 109072454 B 20210305; DE 102017207232 A1 20171102; EP 3449040 A1 20190306; EP 3449040 B1 20200318; ES 2795655 T3 20201124; JP 2019515133 A 20190606; JP 6968825 B2 20211117; KR 102369545 B1 20220303; KR 20190003514 A 20190109; MX 2018013233 A 20190213; PL 3449040 T3 20200824; RU 2018140856 A 20200529; RU 2018140856 A3 20200625; RU 2747720 C2 20210513; US 11124884 B2 20210921; US 2019112717 A1 20190418; ZA 201807922 B 20200226
DOCDB simple family (application)
EP 2017060227 W 20170428; BR 112018071497 A 20170428; CN 201780024275 A 20170428; DE 102017207232 A 20170428; EP 17721118 A 20170428; ES 17721118 T 20170428; JP 2018556914 A 20170428; KR 20187030705 A 20170428; MX 2018013233 A 20170428; PL 17721118 T 20170428; RU 2018140856 A 20170428; US 201716097134 A 20170428; ZA 201807922 A 20181123