阅读说明：本技术 三氟碘甲烷(cf3i)和六氟丙烯(hfp)的共沸物或类共沸物组合物 (Azeotrope or azeotrope-like composition of trifluoroiodomethane (CF3I) and Hexafluoropropylene (HFP) ) 是由 克里斯蒂安·郑工 丹尼尔·C·默克尔 王海友 汉格·T·帕姆 赖安·J·赫尔斯 于 2019-10-10 设计创作，主要内容包括：本公开提供了包含三氟碘甲烷(CF-3I)和六氟丙烯(HFP)的共沸物或类共沸物组合物,以及形成共沸物或类共沸物组合物的方法,该方法包括将六氟丙烯(HFP)和三氟碘甲烷(CF-3I)组合以形成共沸物或类共沸物的步骤,该共沸物或类共沸物包含六氟丙烯(HFP)和三氟碘甲烷(CF-3I),在约14.21psia±0.30psia的压力下具有约-31.21℃±0.30℃的沸点。(The present disclosure provides compositions comprising trifluoroiodomethane (CF) 3 I) And Hexafluoropropylene (HFP), and processes for forming azeotropes or azeotrope-like compositions comprising combining Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) 3 I) A step of combining to form an azeotrope or azeotrope-like comprising Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) 3 I) And has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.)

1. A composition comprising an azeotrope or azeotrope-like composition consisting essentially of effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) And (4) forming.

2. The composition of claim 1 wherein the azeotrope or azeotrope-like composition has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

3. The composition of claim 1 wherein the azeotrope or azeotrope-like composition consists essentially of from about 36 weight percent to about 94 weight percent Hexafluoropropylene (HFP) and from about 6 weight percent to about 64 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

4. The composition of claim 1 wherein the azeotrope or azeotrope-like composition consists essentially of from about 48 weight percent to about 85 weight percent Hexafluoropropylene (HFP) and from about 15 weight percent to about 52 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

5. The composition of claim 1 wherein the azeotrope or azeotrope-like composition consists essentially of from about 69 weight percent to about 70 weight percent Hexafluoropropylene (HFP) and from about 30 weight percent to about 31 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

6. The composition of claim 1 wherein the azeotrope or azeotrope-like composition consists essentially of about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

7. A composition comprising an azeotrope or azeotrope-like composition, said azeotrope or azeotrope-like composition being substantiallyFrom Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) A composition and has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

8. The composition of claim 7 wherein the azeotrope or azeotrope-like composition consists essentially of from about 36 weight percent to about 94 weight percent Hexafluoropropylene (HFP) and from about 6 weight percent to about 64 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

9. The composition of claim 7 wherein the azeotrope or azeotrope-like composition consists essentially of from about 48 weight percent to about 85 weight percent Hexafluoropropylene (HFP) and from about 15 weight percent to about 52 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

10. The composition of claim 7 wherein the azeotrope or azeotrope-like composition consists essentially of from about 69 weight percent to about 70 weight percent Hexafluoropropylene (HFP) and from about 30 weight percent to about 31 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

11. The composition of claim 7 wherein the azeotrope or azeotrope-like composition consists essentially of about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

12. The composition of claim 7 wherein the azeotrope or azeotrope-like composition is comprised of about 36 to about 94 weight percent Hexafluoropropylene (HFP) and about 6 to about 64 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

13. The composition of claim 7 wherein the azeotrope or azeotrope-like composition is comprised of about 48 to about 85 weight percent Hexafluoropropylene (HFP) and about 15 to about 52 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

14. The composition of claim 7 wherein the azeotrope or azeotrope-like composition is comprised of about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I) And (4) forming.

15. A process for forming an azeotrope or azeotrope-like composition comprising combining Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) A step of combining to form an azeotrope or azeotrope-like composition consisting essentially of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) A composition having a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

16. The method of claim 15 wherein the combining step comprises combining about 36 to about 94 weight percent Hexafluoropropylene (HFP) and about 6 to about 64 weight percent trifluoroiodomethane (CF)₃I)。

17. The method of claim 15 wherein the combining step comprises combining about 48 to about 85 weight percent Hexafluoropropylene (HFP) and about 15 to about 52 weight percent trifluoroiodomethane (CF)₃I)。

18. The method of claim 15 wherein the combining step comprises combining about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I)。

19. A catalyst is prepared from Hexafluoropropylene (HFP), trifluoroiodomethane (CF)₃I) And at least one impurity from the primary composition to separate Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) The method of (a), the method comprising the steps of:

forming a secondary composition within the primary composition, the secondary composition consisting essentially of effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Having a composition of about-An azeotrope or azeotrope-like composition having a boiling point of 31.21 ℃ ± 0.30 ℃; and

separating the secondary composition from the primary composition, at least one impurity.

20. The method of claim 19 wherein the step of forming comprises forming a secondary composition within the primary composition, the secondary composition being substantially comprised of from about 36 to about 94 weight percent Hexafluoropropylene (HFP) and from about 6 to about 64 weight percent trifluoroiodomethane (CF)₃I) An azeotrope or azeotrope-like composition that consists of and has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

Technical Field

The present disclosure relates to azeotrope or azeotrope-like compositions, and in particular to compositions comprising trifluoroiodomethane (CF)₃I) And Hexafluoropropylene (HFP).

Background

Fluorocarbon based fluids have been widely used in many applications in industry, including as refrigerants, aerosol propellants, blowing agents, heat transfer media, gaseous dielectrics, and fire extinguishing.

However, certain compounds such as chlorofluorocarbons (CFCs) and Hydrochlorofluorocarbons (HCFCs) are suspected of depleting atmospheric ozone and, therefore, are harmful to the environment. In addition, some of these compounds are believed to contribute to global warming. It is therefore desirable to use fluorocarbon fluids having low or even zero ozone depletion potential, such as Hydrofluorocarbons (HFCs) or those having photolyzable carbon-iodine bonds, which exhibit short atmospheric lifetimes at ground level release. It is also desirable to use single component fluids or azeotrope mixtures that do not fractionate upon boiling and evaporation.

Unfortunately, identifying new environmentally safe non-fractionating mixtures is complicated by the fact that azeotrope formation is not readily predictable.

The industry is constantly seeking new fluorocarbon-based mixtures that offer alternatives and are considered environmentally safer alternatives to the CFCs, HCFCs, and HFCs in use today. Of particular interest are iodine-containing compounds and other fluorinated compounds that have low ozone depletion potential and low global warming potential. Such mixtures are the subject of the present disclosure.

Although iodine-containing compounds are of greatest potential interest, iodine-containing compounds such as trifluoroiodomethane (CF)₃I) Presents challenges and is always needed for purification from trifluoroiodomethane (CF)₃I) To remove impurities such as, for example, trifluoromethane (HFC-23). Thus, separation techniques such as, for example, azeotropic distillation, would be highly desirable.

There is a need for iodine-containing compounds such as trifluoroiodomethane (CF) that can be used to prepare high purity iodine-containing compounds₃I) Compositions and techniques of (a).

Disclosure of Invention

The present disclosure provides compositions comprising trifluoroiodomethane (CF)₃I) And Hexafluoropropylene (HFP).

It is recognized in the art that it is not possible to predict azeotrope formation, and the inventors have unexpectedly discovered that trifluoroiodomethane (CF)₃I) And Hexafluoropropylene (HFP) to form an azeotrope or azeotrope-like composition.

The present disclosure provides a composition comprising an azeotrope or azeotrope-like composition comprising, consisting essentially of, or consisting of: effective amounts of Hexafluoropropylene (HFA) and trifluoroiodomethane (CF)₃I)。

The azeotrope or azeotrope-like composition comprises, consists essentially of, or consists of: about 36 to about 94 weight percent Hexafluoropropylene (HFP), about 48 to about 85 weight percent Hexafluoropropylene (HFP), about 69 to about 70 weight percent Hexafluoropropylene (HFP), or about 69.39 weight percent Hexafluoropropylene (HFP), and about 6 to about 64 weight percent trifluoroiodomethane (CF)₃I) From about 15% to about 52% by weight of trifluoroiodomethane (CF)₃I) From about 30% to about 31% by weight of trifluoroiodomethane (CF)₃I) Or about 30.61 wt% trifluoroiodomethane (CF)₃I)。

In other words, the azeotrope or azeotrope-like composition may comprise from about 36 weight percent to about 94 weight percent Hexafluoropropylene (HFP) andfrom about 6% to about 64% by weight of trifluoroiodomethane (CF)₃I) About 48 to about 85 weight percent Hexafluoropropylene (HFP), and about 15 to about 52 weight percent trifluoroiodomethane (CF)₃I) About 69 to about 70 weight percent Hexafluoropropylene (HFP), and about 30 to about 31 weight percent trifluoroiodomethane (CF)₃I) Or about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I) In that respect The azeotrope or azeotrope-like composition may consist essentially of the above-described amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Consisting of, or consisting of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) in the amounts indicated above₃I) And (4) forming.

The azeotrope or azeotrope-like composition has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

In another form thereof, the present disclosure provides a composition consisting essentially of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) A composition, an azeotrope or an azeotrope-like composition having a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

In another form thereof, the present disclosure provides a method of forming an azeotrope or azeotrope-like composition comprising reacting Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Combined to form a composition comprising Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) An azeotrope or an azeotrope-like composition consisting essentially of or consisting of. The azeotrope or azeotrope-like composition may have a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

In another form thereof, the present disclosure provides a catalyst prepared from a catalyst comprising Hexafluoropropylene (HFP), trifluoroiodomethane (CF)₃I) And at least one impurity from the primary composition to separate Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) The method of (2), the method comprising the steps of: forming a secondary composition within the primary composition, the secondary composition comprising effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) An azeotrope or an azeotrope-like composition consisting essentially of or consisting of an azeotrope or an azeotrope-like composition wherein the azeotrope or the likeThe azeotrope composition may have a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia; and separating the secondary composition from the primary composition and the at least one impurity.

In the foregoing method, the forming step can include forming a secondary composition comprising about 36 to about 94 weight percent Hexafluoropropylene (HFP) and about 6 to about 64 weight percent trifluoroiodomethane (CF) within the primary composition₃I) An azeotrope or an azeotrope-like composition consisting essentially of or consisting of and which azeotrope or azeotrope-like composition may have a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

Drawings

Figure 1 is a graph of temperature versus weight percent Hexafluoropropylene (HFP) measured according to example 1.

Detailed Description

It has been found that Hexafluoropropylene (HFP) is reacted with trifluoroiodomethane (CF)₃I) Form homogeneous, lowest boiling azeotrope and azeotrope-like compositions or mixtures, and the present disclosure provides compositions comprising Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Homogeneous azeotrope or azeotrope-like compositions of (i). The azeotrope or azeotrope-like composition may consist essentially of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Either the azeotrope or azeotrope-like composition may be composed of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) And (4) forming.

The present inventors have found through experiments that Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Forming an azeotrope or azeotrope-like composition.

An "azeotrope" composition is a unique combination of two or more components. Azeotrope compositions can be characterized in various ways. For example, at a given pressure, an azeotrope composition boils at a constant characteristic temperature that is either above the higher boiling component (the highest boiling azeotrope) or below the lower boiling component (the lowest boiling azeotrope). At this characteristic temperature, the same composition will exist in both the gas and liquid phases. Azeotrope compositions do not fractionate upon boiling or evaporation. Thus, the components of an azeotrope composition cannot be separated during the phase transition.

The azeotrope composition is further characterized by a bubble point pressure of the liquid phase that is the same as the dew point pressure of the vapor phase at the characteristic azeotrope temperature.

The behavior of azeotrope compositions is in contrast to the behavior of non-azeotrope compositions, in which the liquid composition changes to a considerable extent during boiling or evaporation of the non-azeotrope composition.

For the purposes of this disclosure, an azeotrope composition is characterized in that the composition boils at a constant characteristic temperature that is below the boiling points of the two or more components (the lowest boiling azeotrope) and thus has the same composition in both the vapor and liquid phases.

However, one of ordinary skill in the art will appreciate that the composition and boiling point of an azeotrope composition will vary to some extent at different pressures. Thus, depending on temperature and/or pressure, azeotrope compositions may have varying compositions. Thus, the skilled artisan will appreciate that ranges of compositions can be used to define azeotrope compositions rather than fixed compositions. In addition, an azeotrope may be defined in terms of the exact weight percent of each component of the composition characterized by a fixed boiling point at a specified pressure.

An "azeotrope-like" composition is a composition that exhibits two or more components that are essentially the same as the azeotrope composition. Thus, for the purposes of this disclosure, an azeotrope-like composition is a combination of two or more different components that will boil at a substantially constant temperature when in liquid form at a given pressure, and which will provide a vapor composition that is substantially the same as the liquid composition undergoing boiling.

For purposes of this disclosure, an azeotrope-like composition is a composition or a number of compositions that boils at a temperature range of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

An azeotrope or azeotrope-like composition may be identified in a number of different ways.

For the purposes of this disclosure, azeotrope or azeotrope-like compositions are identified experimentally using a boiling point meter (Walas, Phase equilibrium in Chemical Engineering, Butterworth-Heinemann, 1985, 533-. The boiling point meter is designed to measure the boiling point of the liquid extremely accurately by measuring the temperature of the gas-liquid equilibrium.

The boiling point of each component separately was measured at constant pressure. The skilled artisan will appreciate that for binary azeotrope or azeotrope-like compositions, the boiling point of one of the components of the composition is initially measured. The second component of the composition is then added in different amounts and the boiling point of each of the obtained compositions is measured at said constant pressure using a boiling point meter.

The measured boiling points are plotted against the composition of the composition tested, e.g., for a binary azeotrope, is the amount of the second component (in weight percent or mole percent) added to the composition. The presence of an azeotrope composition may be identified by observing a maximum or minimum boiling temperature that is above or below the boiling point of any individual component.

The skilled artisan will appreciate that an azeotrope or azeotrope-like composition is identified by comparing the change in the boiling point of the composition relative to the boiling point of the first component when the second component is added to the first component. Thus, to measure the change in boiling point, the system need not be calibrated to the reported boiling point for a particular component.

As previously mentioned, at the highest or lowest boiling point, the composition of the gas phase will be the same as the composition of the liquid phase. Thus, an azeotrope-like composition is one that provides a substantially constant lowest or highest boiling component, i.e., a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30psia, at which substantially constant boiling point the composition of the vapor phase will be substantially the same as the composition of the liquid phase.

The present disclosure provides an azeotrope or azeotrope-like composition comprising effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) To form an azeotrope or azeotrope-like composition. As used herein, the term "effective amount" is the amount of each component that, when combined with the other components, results in the formation of an azeotrope or azeotrope-like mixture.

The azeotrope or azeotrope-like compositions of the present invention may consist essentially of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Or from Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) The composition of (a).

As used herein, the term "consisting essentially of … with respect to a component of an azeotrope or azeotrope-like composition or mixture means that the composition comprises the indicated component in the azeotrope or azeotrope-like ratio and may comprise additional components, provided that the additional components do not form a new azeotrope or azeotrope-like system. For example, azeotrope mixtures consisting essentially of two compounds are those that form binary azeotropes, which optionally may comprise one or more additional components, provided that the additional components do not render the mixture non-azeotropic and do not form azeotropes with either or both compounds (e.g., do not form ternary or higher azeotropes).

The present disclosure also provides a method of making a composite by mixing, combining or blending effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) To form azeotropes or azeotrope-like compositions. Any of a variety of methods known in the art for combining two or more components to form a composition can be used in the methods of the present invention. For example, Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) May be mixed, blended, or otherwise combined manually and/or by machine, as part of a batch or continuous reaction and/or process, or via a combination of two or more such steps. Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Are commercially available and are available from several different suppliers. The components may be provided in the desired amounts, for example by weighing, and then combining the amounts.

The azeotrope or azeotrope-like composition comprises, consists essentially of, or consists of: about 36 to about 94 weight percent Hexafluoropropylene (HFP), about 48 to about 85 weight percent Hexafluoropropylene (HFP), about 69 to about 70 weight percent Hexafluoropropylene (HFP), or about 69.39 weight percent Hexafluoropropylene (HFP), and about 6 to about 6 weight percentAbout 64% by weight of trifluoroiodomethane (CF)₃I) From about 15% to about 52% by weight of trifluoroiodomethane (CF)₃I) From about 30% to about 31% by weight of trifluoroiodomethane (CF)₃I) Or about 30.61 wt% trifluoroiodomethane (CF)₃I)。

In other words, the azeotrope or azeotrope-like composition may comprise from about 36 weight percent to about 94 weight percent Hexafluoropropylene (HFP) and from about 6 weight percent to about 64 weight percent trifluoroiodomethane (CF)₃I) About 48 to about 85 weight percent Hexafluoropropylene (HFP), and about 15 to about 52 weight percent trifluoroiodomethane (CF)₃I) About 69 to about 70 weight percent Hexafluoropropylene (HFP), and about 30 to about 31 weight percent trifluoroiodomethane (CF)₃I) Or about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I) In that respect The azeotrope or azeotrope-like composition may consist essentially of the above-described amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Consisting of, or consisting of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) in the amounts indicated above₃I) And (4) forming.

The azeotrope or azeotrope-like composition has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

In other words, the azeotrope or azeotrope-like composition comprises, consists essentially of, or consists of: hexafluoropropylene (HFP) in an amount as low as about 36 weight percent, about 48 weight percent, or about 69 weight percent, or up to about 70 weight percent, about 85 weight percent, or about 94 weight percent, or any range defined between any two of the foregoing values, and the azeotrope or azeotrope-like composition comprises, consists essentially of, or consists of: trifluoroiodomethane (CF) in an amount as low as about 6 wt%, about 15 wt% or about 30 wt%, or as high as about 31 wt%, about 52 wt% or about 64 wt%₃I) Or within any range defined between any two of the preceding values. In one embodiment, the azeotrope or azeotrope-like composition comprises about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I) Consist essentially of, or consist ofAnd (4) forming. The azeotrope or azeotrope-like compositions of the present disclosure have a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

The present disclosure also provides a composition comprising an azeotrope or azeotrope-like composition. For example, a composition is provided that comprises at least about 5 weight percent of an azeotrope or azeotrope-like composition, or at least about 15 weight percent of an azeotrope or azeotrope-like composition, or at least about 50 weight percent of an azeotrope or azeotrope-like composition, or at least about 70 weight percent of an azeotrope or azeotrope-like composition, or at least about 90 weight percent of an azeotrope or azeotrope-like composition.

Disclosed herein comprise effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Azeotropes or azeotrope-like compositions consisting essentially of or consisting of are useful in the treatment of respiratory disorders derived from Hexafluoropropylene (HFP) and/or trifluoroiodomethane (CF)₃I) Separating impurities. Possibly present in trifluoroiodomethane (CF)₃I) One impurity in (a) is trifluoromethane (HFC-23).

Comprises an effective amount of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) The preparation of azeotropes or azeotrope-like compositions consisting essentially of, or consisting of, allows the use of separation techniques such as, for example, azeotropic distillation to separate from trifluoroiodomethane (CF)₃I) To remove impurities, thereby providing high-purity trifluoroiodomethane (CF)₃I)。

In one example, effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) are included₃I) An azeotrope or azeotrope-like composition consisting essentially of or consisting of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) can be made from a mixture comprising₃I) Together with a compound other than Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) And one or more other compounds such as impurities. After the azeotrope or azeotrope-like composition is formed, the azeotrope or azeotrope-like composition may be separated from the other compounds by any suitable method, such as by distillation, phase separation, or fractional distillation.

Thus, the present disclosure provides a catalyst derived from trifluoroiodomethane (CF)₃I) Primary crude combination ofA process for separating Hexafluoropropylene (HFP) as an impurity in a material, the primary crude composition comprising Hexafluoropropylene (HFP) as an impurity and at least one additional impurity, the process comprising the steps of: providing crude trifluoroiodomethane (CF)₃I) A primary composition of Hexafluoropropylene (HFP) as an impurity and at least one additional impurity; and subjecting the primary composition to distillation, e.g., under conditions effective to form a secondary composition comprising effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) An azeotrope or azeotrope-like composition consisting essentially of, or consisting of; and separating the secondary composition from the primary composition by separation techniques such as phase separation, distillation, or fractional distillation. The primary composition may then be subjected to further separation or purification steps to obtain purified trifluoroiodomethane (CF)₃I)。

The following non-limiting examples serve to illustrate the present disclosure.

Examples

Example 1 boiling Point Meter study

Measurement of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) Using a boiling Point Meter₃I) And azeotrope-like compositions thereof. The boiling point meter comprises a vacuum jacketed glass vessel sealed at the bottom and open to the atmosphere at the top. The top of the boiling point meter or condenser jacket was filled with a mixture of dry ice and ethanol at a pressure of 14.21psia to obtain a temperature of about-72 ℃ which was significantly lower than-30.13 ℃ for Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Normal boiling point of-22.01 ℃. In this way, it is ensured that all the vapor in the system is condensed and flows back into the boiling point meter, so that the liquid and vapor phases are in equilibrium. A quartz-platinum thermometer with an accuracy of ± 0.002 ℃ was inserted into the glass vessel and used to determine the temperature of the condensed vapor corresponding to the equilibrium boiling point of the mixture. The use of zeolite helps to maintain a smooth boiling of the mixture in the boiling point meter.

The following procedure was used.

1. A quartz thermometer was immersed in a long dewar containing an ice/water slurry and the thermometer reading was verified to be 0 ℃. The dewar is deep enough that at least 3/4 of the length of the thermometer shaft is submerged in ice/water. Thermometer resistance was recorded in ohms.

2. The condenser jacket was loaded with ethanol to 3/4 full. The condenser jacket was cooled by slow introduction of dry ice to avoid boiling over and/or splashing of the ethanol.

3. A known amount of trifluoroiodomethane (CF) is added₃I) Or Hexafluoropropylene (HFP) was added to the boiling point meter and vigorous reflux conditions were achieved. The temperature and atmospheric pressure were recorded using a barometer with a temperature indicator.

The measurement was carried out in two steps. In the first step, approximately 16.15g of Hexafluoropropylene (HFP) (purity 99.99 area% according to Gas Chromatography (GC)) was first introduced into the boiling point meter by weighing the container before and after addition using a balance with an accuracy of ± 0.01 g. The liquid was boiled and the equilibrium temperature of Hexafluoropropylene (HFP) at the recorded pressure was recorded. Then, trifluoroiodomethane (CF)₃I) (purity 99.88 area% as determined by Gas Chromatography (GC)) was introduced in small increments into the boiling point meter and the equilibrium temperature of the condensed liquid mixture was recorded.

In the second step, about 25.47g of trifluoroiodomethane (CF) was weighed by weighing the container before and after addition using a balance with an accuracy of. + -. 0.01g₃I) (purity 99.88 area% according to Gas Chromatography (GC)) was introduced into the boiling point meter. The liquid was boiled and the trifluoroiodomethane (CF) at the recorded pressure was recorded₃I) The equilibrium temperature of (a). Hexafluoropropylene (HFP) (99.99 area% purity as determined by Gas Chromatography (GC)) was then introduced in small increments into the boiling point meter and the equilibrium temperature of the condensed liquid mixture was recorded.

The data from the above first and second steps were combined to complete the Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) as given in table 1 below₃I) A composition range data of 0 wt% to 100 wt% for each of the same, the table indicating the lowest temperature at which the azeotrope has formed, and the data is also shown graphically in figure 1. The bubble point temperature of the mixture remained constant, indicating that the mixture is azeotrope-like over a wide range of compositions.

Table 1-CF at P ═ 14.21psia ₃ Boiling Point Meter study of I/Hexafluoropropene

T(℃)(+/-0.01)	Weight% of HFP (+/-0.1)	CF3Weight% of I (+/-0.1)
			-30.13	100.00	0.00
-30.19	98.84	1.16
			-30.35	94.00	6.00
-30.56	86.23	13.77
			-30.64	82.02	17.98
-30.73	75.01	24.99
			-31.21	65.70	34.30
-30.69	59.03	40.97
			-30.64	55.33	44.67
-30.53	49.68	50.32
			-30.43	44.99	55.01
-30.43	44.05	55.95
			-30.36	40.68	59.32
-30.28	36.29	63.71
			-30.21	32.03	67.97
-30.08	26.60	73.4
			-29.90	21.10	78.9
-29.73	15.24	84.76
			-29.46	11.22	88.78
-28.78	6.94	93.06
			-27.25	3.85	96.15
-23.53	1.43	98.57
			-22.01	0.00	100.00

Example 2: separation of impurities

In this example, trifluoroiodomethane (CF) is provided₃I) The crude composition of (a), which comprises Hexafluoropropylene (HFP) as an impurity, and other impurities such as trifluoromethane (HFC-23). The composition is then subjected to conditions effective to form Hexafluoropropylene (HFP) and iodotrifluoromethaneAlkane (CF)₃I) And subjecting the azeotrope or azeotrope-like composition to distillation under conditions such that it is separated from the remainder of the composition. Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) From trifluoroiodomethane (CF) by separation of an azeotrope or azeotrope-like composition₃I) The remaining crude composition of (a) is removed as light components. Then reacting trifluoroiodomethane (CF)₃I) Is subjected to different temperature and pressure conditions, wherein other impurities such as trifluoromethane (HFC-23) can be separated by further distillation to obtain purified trifluoroiodomethane (CF)₃I)。

Aspect(s)

Aspect 1 is a composition comprising effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) An azeotrope or azeotrope-like composition of (i).

Aspect 2 is the azeotrope or azeotrope-like composition of aspect 1 comprising about 36 to about 94 weight percent Hexafluoropropylene (HFP) and about 6 to about 64 weight percent trifluoroiodomethane (CF)₃I)。

Aspect 3 is the azeotrope or azeotrope-like composition of aspect 2 comprising about 48 to about 85 weight percent Hexafluoropropylene (HFP) and about 15 to about 52 weight percent trifluoroiodomethane (CF)₃I)。

Aspect 4 is the azeotrope or azeotrope-like composition of aspect 3 comprising about 69 to about 70 weight percent Hexafluoropropylene (HFP) and about 30 to about 31 weight percent trifluoroiodomethane (CF)₃I)。

Aspect 5 is the azeotrope or azeotrope-like composition of aspect 4 comprising about 69.39 weight percent Hexafluoropropylene (HFP) and about 30.61 weight percent trifluoroiodomethane (CF)₃I)。

Aspect 6 is the azeotrope or azeotrope-like composition of any one of aspects 1 to 5, wherein the composition has a boiling point of about-31.21 ℃ ± 0.30 ℃ at a pressure of about 14.21psia ± 0.30 psia.

Aspect 7 is the azeotrope or azeotrope-like composition of any one of aspects 1 to 6 consisting essentially of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) And (4) forming.

Aspect 8 is the azeotrope or azeotrope-like composition of any one of aspects 1 to 7 consisting of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) And (4) forming.

Aspect 9 is a composition comprising an azeotrope or azeotrope-like composition according to any one of aspects 1 to 8.

Aspect 10 is the composition of aspect 9 comprising at least about 5% by weight of the azeotrope or azeotrope-like composition.

Aspect 11 is the composition of aspect 10 comprising at least about 15% by weight of the azeotrope or azeotrope-like composition.

Aspect 12 is the composition of aspect 11, comprising at least about 50% by weight of the azeotrope or azeotrope-like composition.

Aspect 13 is the composition of aspect 12 comprising at least about 70% by weight of the azeotrope or azeotrope-like composition.

Aspect 14 is the composition of aspect 13, comprising at least about 90% by weight of the azeotrope or azeotrope-like composition.

Aspect 15 is a process for forming an azeotrope or azeotrope-like composition comprising combining Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Combined to form a composition comprising effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) Of an azeotrope or azeotrope-like composition of (a).

Aspect 16 is the process of aspect 15, comprising reacting Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) The steps of combining to form an azeotrope or azeotrope-like composition according to any one of aspects 1 to 8.

Aspect 17 is a method of making a catalyst from a mixture comprising Hexafluoropropylene (HFP), trifluoroiodomethane (CF)₃I) And toSeparation of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF) from a single impurity-depleted primary composition₃I) The method of (2), the method comprising the steps of: forming a secondary composition within the primary composition, the secondary composition comprising effective amounts of Hexafluoropropylene (HFP) and trifluoroiodomethane (CF)₃I) An azeotrope or azeotrope-like composition of (a); and separating the secondary azeotrope or azeotrope-like composition from the primary composition and the at least one impurity.

Aspect 18 is the process of aspect 17, wherein the azeotrope or azeotrope-like composition is as defined in any one of aspects 1 to 8.

Aspect 19 is the method of aspect 17 or 18, wherein the separating is performed by at least one of phase separation, distillation, and fractional distillation.

As used herein, the phrase "within any range defined between any two of the preceding values" literally means that any range can be selected from any two values listed before such phrase, whether such values are in the lower portion of the list or in the upper portion of the list. For example, a pair of values may be selected from two lower values, two higher values, or a lower value and a higher value.

As used herein, the singular forms "a", "an" and "the" include the plural reference unless the context clearly dictates otherwise. Further, when an amount, concentration, or other value or parameter is given as either a range, preferred range, or a list of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. When a range of values is recited herein, unless otherwise stated, the range is intended to include the endpoints thereof, and all integers and fractions within the range. When defining a range, it is not intended that the scope of the disclosure be limited to the specific values recited.

It should be understood that the above description is only illustrative of the present disclosure. Various alternatives and modifications can be devised by those skilled in the art without departing from the disclosure. Accordingly, the present disclosure is intended to embrace all such alternatives, modifications and variances that fall within the scope of the appended claims.