The present invention relates to an etching composition and a method of producing a MXene. The etching composition of the present invention can stably and quickly produce a MXene at high temperature. The etching composition of the present invention can produce a MXene in high yield. The etching composition of the present invention can easily produce various types of MXenes. A method using the etching composition of the present invention can produce a MXene having excellent electrochemical and mechanical properties.

Provided is a composition which has an excellent affinity with the surface of an adhesive agent and can achieve a high etching rate. The composition according to one embodiment comprises: a quaternary alkylammonium fluoride or a hydrate of a quaternary alkylammonium fluoride; and, as an aprotic solvent, (A) an N-substituted amide compound having no active hydrogen on a nitrogen atom, and (B) a dipropylene glycol dimethyl ether, wherein (B) the dipropylene glycol dimethyl ether has the percentage of a structural isomer represented by formula (1) of at least 50 mass % with respect to the total amount of (B) the dipropylene glycol dimethyl ether.

##STR00001##

Provided is a composition which has an excellent affinity with the surface of an adhesive agent and can achieve a high etching rate. The composition according to one embodiment comprises: a quaternary alkylammonium fluoride or a hydrate of a quaternary alkylammonium fluoride; and, as an aprotic solvent, (A) an N-substituted amide compound having no active hydrogen on a nitrogen atom, and (B) a dipropylene glycol dimethyl ether, wherein (B) the dipropylene glycol dimethyl ether has the percentage of a structural isomer represented by formula (1) of at least 50 mass % with respect to the total amount of (B) the dipropylene glycol dimethyl ether.

##STR00001##

The present application provides quaternary azeotrope or azeotrope-like compositions comprising trans-dichloroethylene and three or more additional components. Methods of using the compositions provided herein in cleaning, defluxing, deposition, and carrier fluid applications are also provided.

Described herein is a fluorinated diaminoolefin of formula (I) (R.sub.f.sup.1CF.sub.2)(R.sub.f.sup.2)NCH.sub.2CH═CHCH.sub.2N(R.sub.f.sup.4)(CF.sub.2R.sub.f.sup.3) where: R.sub.f.sup.1 and R.sub.f.sup.3, are independently selected from F, a linear or branched perfluorinated alkyl group comprising 1-7 carbon atoms, or a linear or branched perfluorinated alkyl group comprising 1-7 carbon atoms comprising at least one catenated atom selected from O, N, S or combinations thereof; and R.sub.f.sup.2 and R.sub.f.sup.4 are independently selected from a linear or branched perfluorinated alkyl group comprising 1-7 carbon atoms, or a linear or branched perfluorinated alkyl group comprising 1-7 carbon atoms comprising at least one catenated atom selected from O, N, S or combinations thereof or at least one of (i) R.sub.f.sup.1CF.sub.2 and R.sub.f.sup.2 and (ii) R.sub.f.sup.3CF.sub.2 and R.sub.f.sup.4 are bonded together to form a fluorinated ring structure comprising 4-8 carbon atoms and optionally comprising at least one catenated atom selected from O, N, S or combinations thereof.

The present invention provides a cleaner composition having excellent cleaning properties and appropriate drying properties. The present invention is a cleaner composition including: (A) a hydrofluoroolefin having a boiling point of 30° C. or more and less than 100° C.; and (B) at least one of a perfluoropolyether having a boiling point of 100° C. or more and a hydrofluoroolefin having a boiling point of 100° C. or more, where a mass ratio of the component (A) and the component (B) is 99:1 to 55:45.

The present invention relates to a packaging comprising at least one tablet individually wrapped in a polymer film, characterised in that the tablet comprises 5% to 100% of active chlorine releasing agent, and the method for preparing same. The present invention also relates to the use of a polymer film for individually wrapping a tablet intended to be placed in a packaging, characterised in that the tablet comprises 5% to 100% of active chlorine releasing agent.

Provided is a novel compound that is expected to be used as a solvent, a cleaning agent, a blowing agent, an intermediate for a functional material, and so forth, as well as a production method therefor and uses thereof

As the novel compound, 1,2-dichoro-1-(2,2,2-trifluoroethoxy)ethylene is provided. This compound can be produced, for example, by allowing an addition reaction between 2,2,2-trifluoroethanol and trichloroethylene in the presence of a base.

Provided is a novel compound that is expected to be used as a solvent, a cleaning agent, a blowing agent, an intermediate for a functional material, and so forth, as well as a production method therefor and uses thereof

As the novel compound, 1,2-dichoro-1-(2,2,2-trifluoroethoxy)ethylene is provided. This compound can be produced, for example, by allowing an addition reaction between 2,2,2-trifluoroethanol and trichloroethylene in the presence of a base.

Provided is a novel compound that is expected to be used as a solvent, a cleaning agent, a blowing agent, an intermediate for a functional material, and so forth, as well as a production method therefor and uses thereof As the novel compound, 1,2-dichoro-1-(2,2,2-trifluoroethoxy)ethylene is provided. This compound can be produced, for example, by allowing an addition reaction between 2,2,2-trifluoroethanol and trichloroethylene in the presence of a base.