EP 2231843 B1 20150722 - USE OF ALKANE SULPHONIC ACID FOR RUST REMOVAL
Title (en)
USE OF ALKANE SULPHONIC ACID FOR RUST REMOVAL
Title (de)
VERWENDUNG VON ALKANSCHWEFELSÄURE ZUR ROSTENTFERNUNG
Title (fr)
UTILISATION D'ACIDE ALCANE SULFONIQUE POUR ELIMINATION DE LA ROUILLE
Publication
Application
Priority
- FR 2009052321 W 20091127
- FR 0858129 A 20081128
Abstract (en)
[origin: WO2010061146A1] The present invention relates to the use of at least one alkane sulphonic acid, with formula R-SO3H, where R represents a saturated, linear or branched hydrocarbon chain, comprising 1 to 4 atoms of carbon for removing rust from all types of surface, in particular from metal surfaces, specifically iron, steel and others. The invention also relates to a method for cleaning rust from all types of surfaces using at least one alkane sulphonic acid.
IPC 8 full level
C11D 3/00 (2006.01); C11D 3/34 (2006.01); C11D 7/34 (2006.01); C23G 1/08 (2006.01)
CPC (source: EP US)
C11D 3/0073 (2013.01 - EP US); C11D 3/3409 (2013.01 - EP US); C11D 7/34 (2013.01 - EP US); C23G 1/088 (2013.01 - EP US)
Citation (opposition)
Opponent : BASF SE
- JP H11181489 A 19990706 - NEOS KK
- JP H11181495 A 19990706 - NEOS KK
- JP H11181496 A 19990706 - NEOS KK
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- WO 2005033364 A1 20050414 - BASF AG [DE], et al
- DE 1964211 A1 19700903 - POLSKA AKADEMIE NAUK
- JP H0967600 A 19970311 - NIPPON DENKO, et al
- JP 2007197775 A 20070809 - NIPPON PAINT CO LTD
- US 2007164258 A1 20070719 - EMERSON JAMES C [US], et al
- WO 2009085049 A1 20090709 - COLGATE PALMOLIVE CO [US], et al
- WO 2010055160 A2 20100520 - BASF SE [DE], et al
- ARKEMA METHANESULFONIC ACID APPLICATION INFORMATION, 17 January 2007 (2007-01-17)
- SCREENSHOT SHOWING CREATION DATE OF D13ALPHA
- FALBE ET AL., RÖMPP CHEMIE LEXIKON., vol. 9, 1990, Stuttgart, XP055276707
- "Praktische Galvanotechnik: Ein Lehr- Und Handbuch ;", SAULGAU/WÜRTT.: LEUZE, vol. 5., 1997, XP055276705
- EXPERIMENTAL DATA
Designated contracting state (EPC)
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 SE SI SK SM TR
DOCDB simple family (publication)
FR 2939146 A1 20100604; FR 2939146 B1 20121116; CA 2711205 A1 20100603; CA 2711205 C 20141104; EP 2231843 A1 20100929; EP 2231843 B1 20150722; ES 2545608 T3 20150914; US 2011214690 A1 20110908; US 8574370 B2 20131105; WO 2010061146 A1 20100603
DOCDB simple family (application)
FR 0858129 A 20081128; CA 2711205 A 20091127; EP 09797108 A 20091127; ES 09797108 T 20091127; FR 2009052321 W 20091127; US 81141309 A 20091127