Abstract:
The present disclosure provides a process for removing fluoroorganic acidic compounds from an emulsion of fluoroorganic polymer particles, the process comprising the following steps: (i) forming a mixture of a. an emulsion comprising fluoroorganic polymer particles, at least one fluoroorganic acidic compound and at least one protic solvent, with b. at least one alkylamine; (ii) reacting the fluoroorganic acidic compound with the alkylamine to form a hydrophobic ionic compound comprising the anion of the fluoroorganic acidic compound and the cation of the alkyl amine; (iii) separating the mixture into a first phase comprising the at least one protic solvent and no greater than 80% by weight, preferably no greater than 50% by weight of the total amount of the at least one fluoroorganic acidic compound initially present in the solution in step (i); and a second phase comprising the hydrophobic ionic compound; (iva) removing the first phase from the second phase; and then (va) removing the fluoroorganic polymer particles from the second phase and/or the first phase, or (ivb) removing the fluoroorganic polymer particles from the second phase and/or the first phase, and then (vb) removing the first phase from the second phase.
Abstract:
The present disclosure provides a process for removing fluoroorganic acidic compounds from a solution comprising at least one protic solvent, comprising: forming a mixture of a solution comprising at least one fluoroorganic acidic compound comprising less than 15 carbon atoms and protic solvent, wherein the solution has a pH of 4, with an extraction composition comprising at least one trialkylamine and organic solvent; reacting the fluoroorganic acidic compound with the trialkylamine to form a hydrophobic ionic compound comprising the anion of the fluoroorganic acidic compound and the cation of the trialkylamine; separating the mixture into a first phase comprising the protic solvent and at most 50 wt. % of the fluoroorganic acidic compound present in the initial solution; and a second phase comprising the organic solvent and hydrophobic ionic compound; removing the second phase from the first phase; and repeating steps aforementioned at least once more, wherein the first phase obtained in the last step is used as the initial solution.
Abstract:
The present disclosure provides a process for removing fluoroorganic acidic compounds from a dispersion of fluoroorganic polymer particles in at least one protic solvent, the process comprising the following steps: (i) forming a mixture of a. a dispersion having a pH-value of less than 6 and comprising fluoroorganic polymer particles, at least one protic solvent and at least one fluoroorganic acidic compound with b. an extraction composition comprising at least one alkylamine; (ii) reacting the fluoroorganic acidic compound with the alkylamine to form a hydrophobic ionic compound comprising the anion of the fluoroorganic acidic compound and the cation of the alkyl amine; (iii) separating the mixture into a first phase comprising the at least one protic solvent, the fluoroorganic polymer particles and no greater than 50% by weight of the total amount of the at least one fluoroorganic acidic compound initially present in the dispersion in step (i); and a second phase comprising the hydrophobic ionic compound; and (iv) removing the first phase from the second phase.
Abstract:
A composition includes a hydrofluoroepoxide having Structural Formula (I). Each Rf is, independently, a linear or branched perfluoroalkyl group having 1-6 carbon atoms and optionally comprises a catenated heteroatom.
Abstract:
A composition that includes a hydrofluoroolefin represented by the following general formula (I): Rf—CH2CH—CHCH2-Rf (I). Rf is a perfluoroalkyl group having 6 carbon atoms, and the hydrofluoroolefin is a liquid at room temperature.
Abstract:
A process and an apparatus for converting thermal energy into mechanical energy in a Rankine cycle is provided. The process and apparatus include a working fluid that comprises a fluorinated oxirane. The fluorinated oxirane can contain substantially no hydrogen atoms bonded to carbon atoms and can have from about 4 to about 9 carbon atoms. The process can drive a turbine and, in some embodiments, generate electricity.