Patent classifications
C07C19/10
Aerosol compositions containing fluorine substituted olefins and methods and systems using same
Various compositions, including particularly aerosol compositions containing fluorinated olefins, including particularly 2,3,3,3-tetraluorpropene (HFO-1234yf), in a variety of applications are disclosed.
Aerosol compositions containing fluorine substituted olefins and methods and systems using same
Various compositions, including particularly aerosol compositions containing fluorinated olefins, including particularly 2,3,3,3-tetraluorpropene (HFO-1234yf), in a variety of applications are disclosed.
Process for making HCFO-1233zd
Disclosed is a process for the production of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) which includes reacting a propane feedstock comprising tetrachlorofluoropropanes, trichlorodifluoropropanes, dichlorotrifluoropropanes, or a mixture thereof, in the presence of a solid catalyst. The process generally comprises the following four steps: (i) providing a propane feedstock comprising trichlorodifluoropropanes and dichlorotrifluoropropanes, (ii) reacting the feedstock in a vapor phase reactor in the presence of HF and in the presence of a solid catalyst under conditions effective to form a product stream comprising HCFO-1233zd and unconverted starting materials, (iii) recovering or removing HCl and HF, and (iv) isolating HCFO-1233zd(E), HCFO-1233zd(Z), or both.
Integrated process to produce 2,3,3,3-tetrafluoropropene
The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.
Integrated process to produce 2,3,3,3-tetrafluoropropene
The invention relates to a separation process whereby 2-chloro-3,3,3-trifluoropropene (1233xf) is separated from a mixture containing other fluorinated organics and high boiling materials such as dimers using azeotropes of HF formed by adding appropriate amounts to the mixture which facilitate separation by, e.g. distillation.
HYDROFLUOROOLEFINS AND METHODS OF USING SAME
A hydrofluoroolefin compound represented by the following general formula (II): Formula (II) where Rf is a linear, branched, or cyclic perfluoroalkyl group having 1-6 carbon atoms, and optionally comprises at least one catenated heteroatom selected from nitrogen or oxygen; n is 0 or 1; X is Cl or Br; with the following proviso: when Rf is CF3, then n is 1.
HYDROFLUOROOLEFINS AND METHODS OF USING SAME
A hydrofluoroolefin compound represented by the following general formula (II): Formula (II) where Rf is a linear, branched, or cyclic perfluoroalkyl group having 1-6 carbon atoms, and optionally comprises at least one catenated heteroatom selected from nitrogen or oxygen; n is 0 or 1; X is Cl or Br; with the following proviso: when Rf is CF3, then n is 1.
PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE AND INTERMEDIATES THEREOF
The present invention provides a process for preparation of 2,3,3,3-tetrafluoropropene and intermediates thereof. Owing to its low global warming potential and zero ozone depleting potential, it is been proposed as a replacement for existing chlorofluorocarbons and hydrofluorocarbons as refrigerant.
PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE AND INTERMEDIATES THEREOF
The present invention provides a process for preparation of 2,3,3,3-tetrafluoropropene and intermediates thereof. Owing to its low global warming potential and zero ozone depleting potential, it is been proposed as a replacement for existing chlorofluorocarbons and hydrofluorocarbons as refrigerant.
Method and apparatus for producing fluorine-containing organic compound
Provided is a method for producing a fluorine-containing organic compound. The method can immediately detect the occurrence of a side reaction in direct fluorination reaction using fluorine gas and can give a highly pure fluorine-containing organic compound at a high yield. A raw material liquid (1) containing a raw material organic compound having a hydrogen atom and two or more carbon atoms is reacted with fluorine gas in a reaction container (11) to replace the hydrogen atom of the raw material organic compound with a fluorine atom to give a fluorine-containing organic compound. In the reaction, tetrafluoromethane contained in a gas phase (2) in the reaction container (11) is continuously measured, and the amount of the fluorine gas supplied to the reaction container (11) is controlled depending on the measured value of the tetrafluoromethane.