EP 0978574 A1 20000209 - Compositions of cationic surfactants and their use as antifouling agents for induced draft fans (IDF)
Title (en)
Compositions of cationic surfactants and their use as antifouling agents for induced draft fans (IDF)
Title (de)
Zusammensetzungen von kationische Tenside und deren Verwendung als verschmutzungsverhindernde Substanzen für Gebläse mit erzwungenen Abzug
Title (fr)
Compositions de surfactifs cationiques et leur utilisation comme agents antisalissures pour ventilateurs à tirage forcé
Publication
Application
Priority
EP 98830477 A 19980804
Abstract (en)
The present invention relates to a cationic surfactant in the form of one or more quaternary ammonium salts. Additionally, the present invention provides also the formulation of a composition comprising one or more such quaternary ammonium salts and their use as antifouling agents for induced draft fans for extracting burnt gases from steel plant units. The composition according to the invention comprises at least one quaternary ammonium salt having at least one radical selected from alkyl, alkylaryl, or etherocycle, wherein said radical has an alkyl chain with 8 to 18 carbon atoms and is bonded to the nitrogen atom. The active agent is generally present in an amount of 15 to 60% by weight with respect to the total composition. <IMAGE>
IPC 1-7
IPC 8 full level
C09K 3/00 (2006.01); C11D 3/02 (2006.01); C21B 7/22 (2006.01); C21C 5/38 (2006.01); C23F 15/00 (2006.01); F23L 17/16 (2006.01)
CPC (source: EP KR)
C11D 3/02 (2013.01 - KR); C21C 5/38 (2013.01 - EP); C23F 15/00 (2013.01 - EP)
Citation (search report)
- [X] DE 19648888 A1 19980528 - REMMERS BAUCHEMIE GMBH [DE]
- [X] EP 0328335 A1 19890816 - WAITOMO IND INVESTMENTS LTD [CA]
- [X] FR 2354376 A1 19780106 - ICI LTD [GB]
- [X] US 4000077 A 19761228 - WIXON HAROLD EUGENE
- [X] EP 0277060 A1 19880803 - RAFFINAGE CIE FRANCAISE [FR]
- [X] EP 0418986 A2 19910327 - COLGATE PALMOLIVE CO [US]
- [X] GB 2131693 A 19840627 - OREAL
- [A] US 5437712 A 19950801 - KLATSKIN STUART D [US], et al
- [A] US 3887340 A 19750603 - HSU YUAN TSUN, et al
- [A] DATABASE WPI Section Ch Week 9550, Derwent World Patents Index; Class A82, AN 95-390467, XP002088337
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0978574 A1 20000209; AU 4236399 A 20000224; CA 2279553 A1 20000204; JP 2000073044 A 20000307; KR 20000016979 A 20000325
DOCDB simple family (application)
EP 98830477 A 19980804; AU 4236399 A 19990729; CA 2279553 A 19990803; JP 21896699 A 19990802; KR 19990031016 A 19990729