IONIC LIQUIDS AND THEIR USE AS SOLVENTS

WIPO Patent Application WO2002026701

A3

Ionic compounds with a freezing point of up to 100 DEG C are formed by the reaction of an one amine salt of formula (I) R<1> R<2> R<3> R<4> N<+> X<->, such as choline chloride with an organic compound (II) capable of forming a hydrogen bond with X<->, such as urea, wherein the molar ratio of I to II is from 1:1.5 to 1:2.5. R<1>, R<2>, R<3> and R<4> may be H, optionally substituted C1 to C5 alkyl, optionally substituted C6 to C10 cycloalkyl, optionally substituted C6 to C12 aryl, optionally substituted C7 to C12 alkaryl, or R<1> and R<2> taken together may represent a C4 to C10 optionally substituted alkylene group, thereby forming with the N atom of formula I a 5 to 11-membered heterocyclic ring and all of R<1>, R<2>, R<3> and R<4> are not identical, X<-> may be NO3<->, F, CI<->, Br<->, I<->, BF4<->, CIO4<->, CN<->, SO3CF3<->, or COOCF3<->. The ionic compounds are useful as solvents, and electrolytes for example in electroplating, electrowinning, and electropolishing, and as catalysts.

ABBOTT ANDREW PETER (GB)
DAVIES DAVID LLOYD (GB)
CAPPER GLEN (GB)
RASHEED RAYMOND KELVIN (GB)
TAMBYRAJAH VASUKI (LK)

PCT/GB2001/004300

May 01, 2003

September 26, 2001

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SCIONIX LTD (GB)
ABBOTT ANDREW PETER (GB)
DAVIES DAVID LLOYD (GB)
CAPPER GLEN (GB)
RASHEED RAYMOND KELVIN (GB)
TAMBYRAJAH VASUKI (LK)

B01J31/02; B01J31/04; C07C31/20; C07C31/36; C07C33/22; C07H3/02; C07C39/04; C07C39/07; C07C39/28; C07C41/30; C07C47/565; C07C47/575; C07C47/58; C07C53/126; C07C53/16; C07C53/18; C07C55/06; C07C55/08; C07C57/32; C07C59/10; C07C59/153; C07C59/265; C07C59/50; C07C63/06; C07C65/03; C07C205/06; C07C211/10; C07C211/11; C07C211/46; C07C211/63; C07C215/12; C07C215/76; C07C215/90; C07C219/06; C07C229/04; C07C229/12; C07C229/60; C07C233/05; C07C233/65; C07C235/46; C07C275/00; C07C275/02; C07C275/20; C07C309/30; C07C311/16; C07C335/02; C25C1/20; C25D3/02; C25F3/16; (IPC1-7): C07C275/02; C07C215/90; C07C211/63; C07C219/06; B01J31/02

US5731101A

1998-03-24

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Q. LI ET AL.: "Tetra-n-butylammonium Chloride Thiourea (1/2) a layer type inclusion compound", ACTA CRYSTALLOGRAPHICA, vol. C52, 1996, XP001064811
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