- PROCESSES FOR PREPARING PENTACHLOROPROPANE AND TETRACHLOROPROPENE FROM DICHLOROPROPENE
-
A processes for preparing 1,1,2,3-tetrachloropropene, 2,3,3,3-tetrachloropropene, or a mixture thereof from 1,3-dichloropropene. The process may include a two successive chlorination and dehydrochlorination reactions. In a first chlorination reaction 1,3-dichloropropene is reacted with a chlorination agent to form a first chlorination reaction product including 1,1,2,3-tetrachloropropane. This first chlorination reaction product is reacted with a dehydrochlorination reagent in a first dehydrochlorination reaction to form a first dehydrochlorination reaction product including a trichloropropene. The trichloropropene containing reaction product is reacted with a chlorination agent in a second chlorination reaction to form a second chlorination reaction product including at least one of 1,1,1,2,3-pentachloropropane or 1,1,2,2,3-pentachloropropane. This reaction product is reacted with a dehydrochlorination reagent in a second dehydrochlorination reaction to form a second dehydrochlorination reaction product having 1,1,2,3-tetrachloropropene or a 2,3,3,3-tetrachloropropene.
- -
-
Paragraph 0092
(2022/04/03)
-
- GALLIUM CATALYZED DEHYDROCHLORINATION OF A CHLORINATED ALKANE
-
The present invention provides processes for the preparation of a chlorinated alkene from a chloroalkane starting material, at least one Lewis acid catalyst comprising at least one of gallium metal, a salt of gallium, a gallium alloy, or combinations thereof, and optionally a solvent.
- -
-
Paragraph 0066
(2020/03/15)
-
- METHOD FOR PRODUCING 2-CHLORO-3,3,3-TRIFLUOROPROPENE
-
The invention relates to a method for producing 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) from at least one compound A selected from the group consisting of halopropane of formulae CX3CHClCH2X or CX3CFClCH3, or halopropenes of formula CQX2CCNCH2 and CX2═CClCH2X where X independently represents a fluorine or chlorine atom, characterised in that it comprises bringing said at least one compound A into contact with HF in a gaseous phase in the presence of a fluorination catalyst AlF3 or fluorine-bearing alumina in order to form a gaseous flow B comprising 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) et 3,3,3-trifluoropropene (HFO-1243zf).
- -
-
Paragraph 0027
(2019/02/13)
-
- Gas phase preparation method of 1,1,2,3-tetrachloropropene
-
The invention discloses a gas phase preparation method of 1,1,2,3-tetrachloropropene. Under the effect of a catalyst, 1,1,1,2,3-pentachloropropane is subjected to a gas-phase catalytic dehydrochlorination reaction, the reaction temperature is 150-250 DEG C, the contact time is 1-15 seconds, and a reaction product is collected and subjected to decompression rectification to obtain the 1,1,2,3-tetrachloropropene product. The method has the advantages that the process is simple, the catalyst is good in activity and long in service life, and the method is environmentally friendly and easy to industrialize.
- -
-
Paragraph 0029-0043
(2019/01/23)
-
- Preparation method of 1,1,2,3-tetrachloropropene
-
The invention discloses a preparation method of 1,1,2,3-tetrachloropropene. The method comprises the steps of (1) reacting trichloromethane, 1,2-dichloroethylene and a first catalyst, cooling to room temperature after reaction is completed, adding water, carrying out vacuum rectification to obtain 1,1,2,3,3-pentachloropropane; (2) carrying out gas-phase catalytic dehydrochlorination reaction on the 1,1,2,3,3-pentachloropropane under the action of a second catalyst to obtain 1,2,3,3-tetrachloropropene; (3) carrying out gas-phase catalytic addition reaction on hydrogen chloride and the 1,2,3,3-tetrachloropropene under the action of a third catalyst to obtain 1,1,2,2,3-pentachloropropane; and (4) carrying out gas-phase catalytic dehydrochlorination reaction on the 1,1,2,2,3-pentachloropropane under the action of a fourth catalyst, collecting a reaction product and carrying out vacuum rectification to obtain the 1,1,2,3-tetrachloropropene. The preparation method is simple in process, available in raw materials, low in cost, high in yield, green and environment-friendly and is especially suitable for industrial production.
- -
-
Paragraph 0034; 0039; 0044; 0049; 0054; 0059
(2017/11/04)
-
- Compositions comprising 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetra-chloropropene, 2-chloro-3,3,3-trifluoropropene, or 2-chloro-1,1,1,2-tetrafluoropropane
-
The present disclosure relates to compositions comprising 2,3,3,3-tetrafluoropropene that may be useful as heat transfer compositions, aerosol propellants, foaming agents, blowing agents, solvents, cleaning agents, carrier fluids, displacement drying agents, buffing abrasion agents, polymerization media, expansion agents for polyolefins and polyurethane, gaseous dielectrics, extinguishing agents, and fire suppression agents in liquid or gaseous form. Additionally, the present disclosure relates to compositions comprising 1,1,2,3-tetrachloropropene, 2-chloro-3,3,3-trifluoropropene, or 2-chloro-1,1,1,2-tetrafluoropropane, which may be useful in processes to produce 2,3,3,3-tetrafluoropropene.
- -
-
Page/Page column 5
(2016/05/09)
-
- A 1, 1, 2, 3-tetrachloro acrylic synthetic method
-
The invention discloses a 1,1,2,3-tetrachloropropene synthesis method. The method comprises that a catalyst and a solvent acetonitrile are added into a pressure reactor according to a mass ratio of 1: 15-1: 25 in a nitrogen protective atmosphere, the mixture is continuously stirred for 1-2h, tetrachloroethylene and dichloromethane are added into the reactor, the mixture is heated to a temperature of 120-130 DEG C, is continuously stirred for 14-16h in a nitrogen protective atmosphere and is subjected to reduced pressure distillation to form 1,1,1,2,2,3-hexachloropropane, the 1,1,1,2,2,3-hexachloropropane, zinc powder activated by hydrochloric acid and dioxan are added into an enclosed container, the materials are stirred at a temperature of 45 DEG C in a nitrogen protective atmosphere for 48-50h, the mixture is subjected to reduced pressure distillation, and the fraction at a temperature of 102-104 DEG C under pressure of 13.33kPa is collected and is 1,1,2,3-tetrachloropropene. The 1,1,2,3-tetrachloropropene synthesis method has simple reaction processes and post-treatment processes, has a high synthesis yield and has a low raw material cost.
- -
-
Paragraph 0028-0029
(2017/03/28)
-
- A METHOD TO PRODUCE 1,1,2,3-TETRACHLOROPROPENE WITH HIGH YIELD
-
The present invention provides a method for the high yield production of HCC-1230xa from the known four step method, wherein the Step 3 crude product (crude HCC-240db) is used directly as the starting material in the Step 4 reaction - but only if the crude HCC-240db contains less than 0.5 wt% of impurities selected from the group consisting of HCC-250fb, HCC-1240za, and mixtures thereof.
- -
-
Page/Page column 3; 6; 10
(2015/11/18)
-
- PROCESS FOR THE PRODUCTION OF CHLORINATED PROPENES
-
Processes for the production of chlorinated propenes are provided. The processes proceed through the production of cyclic intermediate that is thereafter readily converted to a desired chloropropane, e.g., via selective pyrolysis. The process may be conducted using starting materials that are readily commercially available and/or that may be reacted safely in standard laboratory equipment so that capital cost savings may be seen. The process does not require the use of catalysts and yet, process conditions less extreme than many conventional processes for the production of chlorinated propenes are suitable, so that raw material and utility cost savings are also possible.
- -
-
Paragraph 0067-0068
(2014/09/16)
-
- Process For Producing Chlorinated Hydrocarbons
-
The preparation of chlorinated hydrocarbons, such as pentachloropropanes, such as 1,1,1,2,3-pentachloropropane, from tetrachloropropanes, such as 1,1,1,3-tetrachloropropane, in the presence of a polyvalent antimony compound that includes a pentavalent antimony compound, such as antimony pentachloride, is described. Also described are methods for preparing optionally chlorinated alkenes, such as, tetrachloropropenes, from chlorinated alkanes, such as pentachloropropanes, in the presence of ferric chloride and a polyvalent antimony compound that includes a pentavalent antimony compound.
- -
-
Paragraph 0183; 0184
(2014/08/06)
-
- SYNTHESIS OF 1,1,2,3-TETRACHLOROPROPENE
-
The present invention provides an improved process for producing 1,1,2,3-tetrachloropropene. By using a first reactive distillation column for HCC-250fb dehydrochlorination, and a second reactive distillation column for HCC-240db dehydrochlorination/HCC-1230xf isomerization, the 1,1,2,3-tetrachloropropene manufacturing process can be greatly simplified, resulting in reduced equipment use, energy use, as well as increased productivity.
- -
-
Paragraph 0046; 0047
(2014/08/19)
-
- PROCESS TO MAKE 1,1,2,3-TETRACHLOROPROPENE FROM 1,1,3-TRICHLOROPROPENE AND/OR 3,3,3- TRICHLOROPROPENE
-
Disclosed is a process for the synthesis of 1,1,2,3-tetrachloropropene (HCC-1230xa) using 1,1,3-trichloropropene (HCC-1240za) and/or 3,3,3-trichloropropene (HCC-1240zf) and Cl2 gas as the reactants, wherein the process takes place in a single reactor system. Before this invention, HCC-1230xa was made in a two-step process using HCC-1240za/HCC-1240zf and Cl2 gas, and the processing was conducted using two separate reactors.
- -
-
Paragraph 0019; 0020
(2014/09/03)
-
- PROCESS FOR THE PRODUCTION OF CHLORINATED PROPANES AND/OR PROPENES
-
Processes for the production of chlorinated propanes and/or propenes are provided. The present processes make use of methylacetylene, a by-product in the production of ethylene and/or propylene, as a low cost starting material, alone or in combination with propadiene, propene and/or propane. In the latter embodiments, the processes may also be utilized to provide a substantially pure stream of propane.
- -
-
Paragraph 0078-0082
(2013/06/05)
-
- METHOD FOR PRODUCING A CHLORINATED HYDROCARBON HAVING 3 CARBON ATOMS
-
A method of producing a chlorinated hydrocarbon having 3 carbon atoms, comprising a conversion step for converting a chloropropane represented by the following formula (1) into a chloropropane represented by the following formula (2) by reacting it with chlorine in the presence of anhydrous aluminum chloride. CCl3—CCl(2-m)Hm—CCl(3-n)Hn??(1) (In the above formula (1), m is 1 or 2, and n is an integer of 0 to 3.) CCl3—CCl(3-m)H(m-1)—CCl(3-n)Hn??(2) (In the above formula (2), m and n are the same integers as in the formula (1), respectively.)
- -
-
Paragraph 0159; 0160
(2013/07/05)
-
- PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND
-
The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1): CFnCl3-nCHClCH2—Cl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2): CFnCl3-nCCl═CH2, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene, and 2,3,3,3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine-containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.
- -
-
Page/Page column 5
(2012/03/27)
-
- ISOTHERMAL MULTITUBE REACTORS AND PROCESSES INCORPORATING THE SAME
-
The present invention provides isothermal multitube reactors suitable for the production of chlorinated and/or fluorinated propene and higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes. The reactors utilize a feed mixture inlet temperature at least 20° C. different from a desired reaction temperature.
- -
-
Page/Page column 7
(2011/04/25)
-
- PROCESSES FOR THE PRODUCTION OF CHLORINATED AND/OR FLUORINATED PROPENES AND HIGHER ALKENES
-
The present invention provides continuous, gas phase, free radical processes for the production of chlorinated and/or fluorinated propenes or higher alkenes from the reaction of chlorinated and/or fluorinated alkanes and chlorinated and/or fluorinated alkenes, wherein wherein at least a portion of any intermediate boiler by-products generated by the process are removed from the process
- -
-
Page/Page column 6
(2011/04/25)
-
- PROCESS FOR PREPARING 1,1,2,3-TETRACHLOROPROPENE
-
The present invention provides a process for preparing 1,1,2,3-tetrachloropropene, including heating 1,1,1,2,3-pentachloropropane in a gas phase in the absence of a catalyst to carry out a dehydrochlorination reaction. According to the process of the present invention, 1,1,2,3-tetrachloropropene (HCC-1230xa) can be efficiently produced by a simple and economically advantageous method that is suitable for industrial-scale production.
- -
-
Page/Page column 12-13
(2011/06/23)
-
- PROCESS FOR PREPARING CHLORINE-CONTAINING FLUOROCARBON COMPOUND
-
The present invention provides a process for preparing at least one chlorine-containing fluorocarbon compound selected from the group consisting of chlorine-containing fluoropropane compounds represented by Formula (1) : CFnCl3-nCHClCH2Cl, wherein n is 1 or 2, and chlorine-containing fluoropropene compounds represented by Formula (2) : CFnCl3-nCCl=CH2, wherein n is 1 or 2, wherein the process includes the step of contacting at least one chlorine-containing compound selected from the group consisting of 1, 1, 1, 2, 3-pentachloropropane, 1, 1, 2, 3-tetrachloropropene, and 2, 3, 3, 3-tetrachloropropene with hydrogen fluoride in the absence of a catalyst while heating. According to the present invention, the chlorine- containing propane and propene compounds having 1 or 2 fluorine atoms can be prepared by an industrially applicable, simple and effective process.
- -
-
Page/Page column 13-15
(2010/12/17)
-
- PROCESS FOR THE PRODUCTION OF CHLORINATED AND/OR FLUORINATED PROPENES
-
The present invention provides one-step processes for the production of chlorinated and/or fluorinated propenes. The processes provide good product yield with low, e.g., less than about 20%, or even less than 10%, concentrations of residues/by-products. Advantageously, the processes may be conducted at low temperatures relative to conventional processes, so that energy savings are provided, and/or at higher pressures so that high throughputs may also be realized. The use of catalysts may provide enhancements to conversion rates and selectivity over those seen in conventional processes, as may adjustments to the molar ratio of the reactants.
- -
-
Page/Page column 26; 28
(2010/04/30)
-
- PROCESS FOR PREPARING 2-CHLORO-3,3,3-TRIFLUOROPROPENE
-
The present invention provides a process for preparing 2-chloro-3,3,3-trifluoropropene including subjecting, in the absence of a catalyst, at least one chlorine-containing compound selected from the group consisting of chloropropane represented by formula (1): CClX2CHClCH2Cl, wherein each X is the same or different and each represents Cl or F, chloropropene represented by formula (2): CClY2CCl=CH2, wherein each Y is the same or different and each represents Cl or F, and chloropropene represented by formula (3): CZ2=CClCH2Cl, wherein each Z is the same or different and each represents Cl or F, to a reaction with hydrogen fluoride under heating in a gas phase. According to the present invention, 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) can be effectively prepared by an easy and economically advantageous process that is suitable for industrial scale production.
- -
-
Page/Page column 11; 12
(2010/11/05)
-
- PROCESSES FOR PREPARING 1,1,2,3-TETRACHLOROPROPENE
-
Provided is a continuous process for preparing 1,1,2,3-tetrachloro-1-propene having the steps of catalytically dehydrochlorinating CH2ClCCl2CH2Cl in the gas phase to produce CHCl═CClCH2Cl; chlorinating the CHCl═CClCH2Cl to form CHCl2CCl2CH2Cl; and catalytically dehydrochlorinating the CHCl2CCl2CH2Cl in the gas phase to form CCl2═CClCH2Cl.
- -
-
Page/Page column 2; 3
(2009/02/11)
-
- METHODS OF MAKING CHLORINATED HYDROCARBONS
-
Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.
- -
-
Page/Page column 23
(2009/08/14)
-
- Synthesis of α-Halocinnamate Esters via Solvolytic Rearrangement of Trichloroallyl Alcohols
-
Aryl trichlorovinyl ketones undergo regioselective reduction to the corresponding carbinols with sodium borohydride in alcoholic solvents and are transformed to the (Z)-α-chlorocinnamate ester derivatives via an acid-catalyzed allylic rearrangement.Micharl addition of ammonia to these ester derivatives affords cis- and/or trans-aziridine amides.The facile rearrangement allows the synthesis of d,l-phenylalanine derived from perchloroethylene and toluene.
- Kruper, William J.,Emmons, Albert H.
-
p. 3323 - 3329
(2007/10/02)
-
- Determination of the Constitution of Highly Chlorinated Organic Compounds via INADEQUATE 13C Nuclear Magnetic Resonance Spectroscopy
-
By means of 13C-13C-spin-spin couplings obtained by one- or two-dimensional double quantum coherence NMR spectroscopy with the pulse sequence INADEQUATE it is now possible (a) to assign the 13C NMR signals of known highly chlorinated organic compounds by sure (1-4) and (b) to determine the constitution of unknown highly chlorinated compounds (5-7, 9-12).From the 1JC=C values increments are deduced which allow to predict 1JC=C values of other compounds (Table 7).
- Bauer, Hans,Buddrus, Joachim,Auf der Heyde, Wolfgang,Kimpenhaus, Wolfgang
-
p. 1890 - 1903
(2007/10/02)
-