The present disclosure provides an ionic liquid and a preparation method thereof, in particular, the present disclosure provides an ionic liquid whose halogen anions content and moisture content are low, and a method for preparing the same. The total content of halogen anions in the ionic liquid is less than 10 ppm, and moisture content in the ionic liquid is less than 50 ppm. The ionic liquid prepared by the method of the present disclosure is suitable for electrochemical systems which have high requirements for moisture content, such as lithium ion secondary batteries and electrochemical supercapacitors.

Described are compounds of the formula: wherein R.sup.Aryl is an aryl group; R.sup.1 is a linear or branched C.sub.2-C.sub.40 hydrocarbyl group; R.sup.2 is a C.sub.1-C.sub.4 alkyl; R.sub.f is a perfluorinated group of having an average of 3 to 5 carbon atoms; and subscript x is 1 to 3.

R.sup.ArylCO.sub.2R.sup.1NR.sup.2SO.sub.2R.sub.f].sub.x

Described are compounds of the formula: wherein R.sup.Aryl is an aryl group; R.sup.1 is a linear or branched C.sub.2-C.sub.40 hydrocarbyl group; R.sup.2 is a C.sub.1-C.sub.4 alkyl; R.sub.f is a perfluorinated group of having an average of 3 to 5 carbon atoms; and subscript x is 1 to 3.

R.sup.ArylCO.sub.2R.sup.1NR.sup.2SO.sub.2R.sub.f].sub.x

A compound represented by formula (I) or a salt thereof.

##STR00001##

In formula (I), R.sup.1 and R.sup.4 each independently represent a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group or the like. R.sup.2 represents a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group or the like. R.sup.3 represents an unsubstituted or substituted C1 to C6 alkyl group or the like. R.sup.5 represents a C1 to C6 haloalkyl group or the like. G represents an oxygen atom or a sulfur atom. R.sup.6 and R.sup.7 each independently represent a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group or the like. n represents 0 or 1. R.sup.8 and R.sup.9 each independently represent a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group. Ar represents an unsubstituted or substituted C6 to C10 aryl group or the like.

A compound represented by formula (I) or a salt thereof.

##STR00001##

In formula (I), R.sup.1 and R.sup.4 each independently represent a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group or the like. R.sup.2 represents a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group or the like. R.sup.3 represents an unsubstituted or substituted C1 to C6 alkyl group or the like. R.sup.5 represents a C1 to C6 haloalkyl group or the like. G represents an oxygen atom or a sulfur atom. R.sup.6 and R.sup.7 each independently represent a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group or the like. n represents 0 or 1. R.sup.8 and R.sup.9 each independently represent a hydrogen atom, or an unsubstituted or substituted C1 to C6 alkyl group. Ar represents an unsubstituted or substituted C6 to C10 aryl group or the like.

The present invention relates to the well drilling field in petrochemical industry, in particular to use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid. The dual-cation fluorocarbon surfactant is a dual-cation fluorocarbon surfactant of which the cation part is represented by the following formula (1). The dual-cation fluorocarbon surfactant of the present invention can serve as wettability reversal agent when it is used for oil-gas drilling to enable rock amphiphobic, and is an amphiphobic wettability reversal agent which can cause rock surface to be non-hydrophilic and non-lipophilic. Using of dual-cation fluorocarbon surfactant, especially when drilling highly hydrous mud shale, can avoid permeation of water and oil into the rock effectively and thereby a capillary phenomenon can be prevented, and an effect of stabilizing the well wall and protecting the reservoir is attained. ##STR00001##

The present invention relates to the well drilling field in petrochemical industry, in particular to use of dual-cation fluorocarbon surfactant as amphiphobic wettability reversal agent in drilling fluid. The dual-cation fluorocarbon surfactant is a dual-cation fluorocarbon surfactant of which the cation part is represented by the following formula (1). The dual-cation fluorocarbon surfactant of the present invention can serve as wettability reversal agent when it is used for oil-gas drilling to enable rock amphiphobic, and is an amphiphobic wettability reversal agent which can cause rock surface to be non-hydrophilic and non-lipophilic. Using of dual-cation fluorocarbon surfactant, especially when drilling highly hydrous mud shale, can avoid permeation of water and oil into the rock effectively and thereby a capillary phenomenon can be prevented, and an effect of stabilizing the well wall and protecting the reservoir is attained. ##STR00001##

Disclosed is an additive for nonaqueous electrolyte solutions, comprising a disulfonic acid amide compound represented by Formula (1).

##STR00001##

In Formula (1), A represents a C.sub.mH.sub.(2m-n)Z.sub.n, in which m represents an integer of 1 to 6, n represents an integer of 1 to 12, 2m-n is 0 or more, and Z represents a halogen atom, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 represent an alkyl group having 1 to 6 carbon atoms which is substituted with a phenyl group optionally having a substituent, or the like, and R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 may be linked respectively to form an alkylene group having 2 to 5 carbon atoms in total which forms a cyclic structure together with a nitrogen atom.

Disclosed is an additive for nonaqueous electrolyte solutions, comprising a disulfonic acid amide compound represented by Formula (1).

##STR00001##

In Formula (1), A represents a C.sub.mH.sub.(2m-n)Z.sub.n, in which m represents an integer of 1 to 6, n represents an integer of 1 to 12, 2m-n is 0 or more, and Z represents a halogen atom, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 represent an alkyl group having 1 to 6 carbon atoms which is substituted with a phenyl group optionally having a substituent, or the like, and R.sup.1 and R.sup.2, and R.sup.3 and R.sup.4 may be linked respectively to form an alkylene group having 2 to 5 carbon atoms in total which forms a cyclic structure together with a nitrogen atom.

This disclosure relates to the field of molecules having pesticidal utility against pests in Phyla Arthropoda, Mollusca, and Nematoda, processes to produce such molecules, intermediates used in such processes, pesticidal compositions containing such molecules, and processes of using such pesticidal compositions against such pests. These pesticidal compositions may be used, for example, as acaricides, insecticides, miticides, molluscicides, and nematicides. This document discloses molecules having the following formula (Formula One).

##STR00001##