Ionic liquids and their use as solvents

Details Ionic liquids and their use as solvents Ionic liquids and their use as solvents

2007-02-27

2007-02-27

Jiang, Shaojia Anna (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S291000

Reexamination Certificate

active

10381060

ABSTRACT:
Ionic compounds with a freezing point of up to 100° C. are formed by the reaction of an one amine salt of formula (I) R1R2R3R4N+X−, such as choline chloride with an organic compound (II) capable of forming a hydrogen bond with X; such as urea, wherein the molar ration of I to II is from 1:1.5 to 1:2.5. R1, R2, R3and R4may be H, optionally substituted C1to C5alkyl, optionally substituted C6to C10cycloalkyl, optionally substituted C6to C12aryl, optionally substituted C7to C12alkaryl, or R1and R2taken together may represent a C4to C10optionally substituted alkylene group, thereby forming with the N atom of formula I a 5 to 11-membered heterocyclic ring and all of R1, R2, R3and R4are not identical, X−may be NO3−, F, Cl−, Br−, I−, BF4−, ClO4−, CN−, SO3CF3−, or COOCF3−. The ionic compounds are useful as solvents, and electrolytes for example in electroplating, electrowinning, and electropolishing, and as catalysts.

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