- METALLOCOMPLEX CATALYST OF THE ADDITION REACTION OF CCl4 TO ETHYLENE
-
The catalyst FeIIFe2IIICl8 (DMA)6-iron(2+)diiron(3+)octachlorohexakis(dimethylacetamide), was isolated from the media of the catalytic synthesis of 1,1,1,3-tetrachloropropane (C3), and characterized by physicochemical methods.A counter synthesis of the catalyst was carried out.The telomerization of ethylene with CCl4 proceeds with a 98percent selectivity with respect to C3 in its presence, while the conversion of CCl4 reaches 55-60percent after 4 h.A coordination-ionic mechanism of the reaction of CCl4 with C2H4 was proposed, which followed the concept of the donor-acceptor electron-transporting systems (the DAET systems), thus accounting for its high selectivity.
- Lavrent'eva, E. A.,Ponomarev, V. I.,Lavrent'ev, I. P.
-
-
Read Online
- 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.
- -
-
Page/Page column 11-12
(2020/05/15)
-
- IMPROVED PROCESSES FOR PREPARING HALOGENATED ALKANES
-
The present invention provides improved processes for preparing halogenated alkanes. The processes comprise reacting an alkene, a halogenated alkene, or combinations thereof and a halogenated methane with at least one chlorine atom, while using an absorption device.
- -
-
Paragraph 0101-0102
(2019/10/29)
-
- PREPARATION OF 2,3,3,3-TETRAFLUOROPROPENE, INTERMEDIATE AND COMPOSITION THEREOF
-
The present invention provides a process for preparation of 2,3,3,3-tetrafluoropropene, intermediate and composition thereof. Fluoro olefins play an important role as refrigerants. In recent years a fluoro olefin viz. 2,3,3,3-tetrafluoropropene (HFO-1234yf) has attracted attention as a new refrigerant to replace another fluorinated refrigerants.
- -
-
Page/Page column 10
(2019/12/04)
-
- METHODS FOR PREPARING CHLORINATED ALKANES BY UTILIZING FERRIC CHLORIDE, AN INITIATOR, AND AN ALKYLPHOSPHATE
-
The present invention provides processes for the production of chlorinated alkanes.
- -
-
Paragraph 0100-0103
(2019/10/23)
-
- METHOD FOR PRODUCTION OF A HALOGENATED ALKANE USING AN ABSORBER-REACTOR COMBINATION
-
The present invention provides improved processes for preparing halogenated alkanes. The processes comprise contacting at least one alkene, a halogenated alkene, or combinations thereof with a halogenated methane with at least one chlorine atom to form a liquid phase. This liquid phase is then contacted with at least one catalytic species which initiates the reaction with at least one alkene, a halogenated alkene, or combinations thereof with a halogenated methane with at least one chlorine atoms.
- -
-
Paragraph 0102-0106
(2019/10/29)
-
- IMPROVED PROCESSES FOR PREPARING HALOGENATED ALKANES
-
The present invention provides improved processes for preparing halogenated alkanes. In particular, the processes comprise reacting an alkene, a halogenated alkene, or combinations thereof and a halogenated methane with at least one chlorine atom.
- -
-
Paragraph 0104-0105
(2017/08/01)
-
- MANUFACTURING METHOD OF CHLOROPROPANE
-
PROBLEM TO BE SOLVED: To provide a manufacturing method of a chloropropane for suppressing yield reduction of chloropropane which is a target product, due to a side reaction such as a polymerization reaction or a dehydrochlorination reaction when a reaction liquid obtained by an addition reaction of an unsaturated compound in a liquid phase of carbon tetrachloride in which an iron complex is dissolved is subjected to the next reaction step or distillation step, and further suppressing the occurence of the problems of corrosion of a device or blocking of a pipeline. SOLUTION: There is provided a manufacturing method of a chloropropane by an addition reaction of an unsaturated compound represented by the general formula (1), C2HaCl4-a(1), where a is an integer of 0 to 4, in the liquid phase of carbon tetrachloride in which an iron complex is dissolved, and assistant filtration of the resulting reaction liquid. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT
- -
-
Paragraph 0070; 0072
(2017/10/11)
-
- METHOD FOR PRODUCING 1,1,1,3-TETRACHLOROPROPANE
-
PROBLEM TO BE SOLVED: To provide a method for producing 1,1,1,3-tetrachloropropane by adding carbon tetrachloride to ethylene in a liquid phase in which a metal complex is dissolved and by efficiently removing the metal complex from a reaction mixture obtained without decomposing the target 1,1,1,3-tetrachloropropane. SOLUTION: The method for producing 1,1,1,3-tetrachloropropane comprises: applying centrifugal force to a reaction mixture obtained by carrying out the addition reaction for phase separation; and separating and removing a light phase containing the metal complex. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2017,JPOandINPIT
- -
-
Paragraph 0051-0053; 0055; 0058
(2017/10/28)
-
- MANUFACTURING METHOD OF CHLOROPROPANES
-
PROBLEM TO BE SOLVED: To provide a manufacturing method of chloropropanes, which suppresses yield reduction of chloropropanes, which are target products, due to a side reaction such as a polymerization reaction or a dehydrochlorination reaction when a reaction liquid obtained by an addition reaction of an unsaturated compound is applied to following reaction process or distillation process in a liquid phase of tetrachloromethane in which an iron complex is dissolved and further inhibits generation of problems of corrosion of a device or blockage of piping. SOLUTION: There is provided a manufacturing method of chloropropanes by addition reacting tetrachloromethane and an unsaturated compound represented by the general formula (1) C2HaCl4-a (1), where a is an integer of 0 to 4 in a liquid phase of the tetrachloromethane in which an iron complex is dissolved to generate chloropropanes represented by the general formula (2) C3HaCl8-a (2), where a is same integer as a in the formula (1), and cleaning the resulting reaction liquid containing chloropropanes with a polar solvent containing acid. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT
- -
-
Paragraph 0069-0072
(2017/12/12)
-
- Continuous preparation method of chlorohydrocarbons
-
The invention discloses a continuous preparation method of chlorohydrocarbons. The preparation method comprises the following steps: (a) continuously introducing carbon tetrachloride, C2 olefins, a catalyst and a catalyst adjuvant into a reaction kettle to react, thereby obtaining a reaction product; (b) continuously introducing the reaction product obtained in the step (a) into a first rectification tower, obtaining the unreacted carbon tetrachloride and C2 olefins from the tower top, circulating the unreacted carbon tetrachloride and C2 olefins into the reaction kettle, and obtaining a tower bottom solution on the tower bottom; (c) continuously introducing the tower bottom solution obtained in the step (b) into a second rectification tower, rectifying to obtain the catalyst adjuvant and a component containing chlorohydrocarbon products, and circulating the catalyst adjuvant back into the reaction kettle; and (d) continuously introducing the component containing chlorohydrocarbon products obtained in the step (c) into a third rectification tower, and rectifying to obtain the chlorohydrocarbon products. The method has the advantages of simple technique, low cost, high reaction efficiency, high safety and environment friendliness.
- -
-
Paragraph 0037; 0038
(2017/03/14)
-
- Repeated polychloropyrimidine propane batch manufacturing method
-
PROBLEM TO BE SOLVED: To stably perform within a short time the second and later batch reactions in batch-wise production of polychloropropane by adding carbon tetrachloride to a 2C unsaturated compound such as ethylene and vinyl chloride by using a phosphoric acid-iron based catalyst. SOLUTION: The reaction is performed, by discharging the reaction mixture from a reactor after completing each batch-wise reaction on a condition without discharging the whole of the reaction mixture but with leaving 2 vol.% preferably about 5 vol.% thereof in the reactor vessel, and by introducing the next batch reaction materials (carbon tetrachloride and an unsaturated compound) on a condition of the reaction mixture being present in the reactor. COPYRIGHT: (C)2012,JPOandINPIT
- -
-
Paragraph 0055
(2016/12/16)
-
- METHOD FOR PRODUCING HIGHER CHLOROALKENES
-
PROBLEM TO BE SOLVED: To provide a method for efficiently producing a target higher chloropropene without lowering a rate of the following dehydrochlorination reaction, when producing the target higher chloropropene by obtaining a higher chloroalkane by subjecting carbon tetrachloride and alkenes to an addition reaction in the presence of an amide compound and iron, and further by carrying out the dehydrochlorination reaction. SOLUTION: Provided is a method for producing target higher chloroalkenes, comprising: subjecting carbon tetrachloride and alkenes to an addition reaction to obtain a reaction liquid; subjecting the reaction liquid to distillation to separate and remove a portion of amides contained in higher chloroalkanes, iron chloride, high-boiling-point materials, and the like; and subsequently contacting a distillate obtained from the overhead with an adsorbent to obtain purified higher chloroalkanes from which amides are separated and removed with high precision. The purified higher chloroalkanes is subjected to a dehydrochlorination reaction to obtain the target higher chloroalkenes. COPYRIGHT: (C)2015,JPOandINPIT
- -
-
Paragraph 0108-0109
(2018/11/22)
-
- 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 0018; 0040
(2014/08/19)
-
- PROCESS FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE
-
The present invention provides a method for efficiently preparing 2,3,3,3-tetrafluoropropene (HFO-1234yf) by a simple and economically advantageous method that is suitable for implementation on an industrial scale. The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene, comprising the step of: (1) in a reactor, (1-1) reacting 1,1,1,2,3-pentachloropropane with hydrogen fluoride in an amount of 10 to 100 mol per mole of the 1,1,1,2,3-pentachloropropane 1; (1-2) in the presence of chromic oxide represented by composition formula: CrOm (1.5m3) or fluorinated chromic oxide obtained by fluorinating the chromic oxide; (1-3) in the presence of oxygen in an amount of 0.02 to 1 mol per mole of the 1,1,1,2,3-pentachloropropane; and (1-4) in the gas phase within a temperature range of 320 to 390 degrees centigrade, thereby obtaining a reaction product containing 2,3,3,3-tetrafluoropropene.
- -
-
Page/Page column 11-12
(2013/03/26)
-
- 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 0161; 0162; 0163
(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 3; 4
(2012/03/27)
-
- PROCESS OF MAKING A CHLORINATED HYDROCARBON
-
A process of making a chlorinated hydrocarbon through a thermal dehydrochlorination step in which an unsaturated compound represented by the following general formula (2) is obtained by thermally decomposing a saturated compound represented by the following general formula (1). [in-line-formulae]CCl3—CCl2-mHm—CCl3-nHn??(1)[/in-line-formulae] [in-line-formulae]CCl2═CCl2-mHm-1—CCl3-nHn??(2)[/in-line-formulae] (in the above formulas, m is 1 or 2, and n is an integer of 0 to 3.)
- -
-
Page/Page column 10
(2012/03/12)
-
- 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 9-10
(2011/06/23)
-
- PROCESS FOR THE MANUFACTURE OF HEXAFLUORO-2-BUTENE
-
Hexafluoro-2-butene (HFO-1336) is a low global warming potential blowing agent, refrigerant and solvent. This invention provides methods for making the compound, including the cis-isomer, from the readily available raw materials, carbon tetrachloride and ethylene. The trans-isomer formed in the process can be isomerized into cis-isomer by the use of an isomerization catalyst.
- -
-
Page/Page column 5
(2011/10/12)
-
- 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 10
(2010/11/05)
-
- 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-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 10-11
(2010/12/17)
-
- 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 27-28
(2009/08/14)
-
- PROCESS FOR THE MANUFACTURE OF 1,1,1,3,3-PENTACHLOROPROPANE
-
A process for the manufacture of haloalkanes, or more particularly to a process for the manufacture of 1,1,1,3,3-pentachloropropane (HCC-240fa) and/or and/or 1,1,1,3-tetrachloropropane (HCC-250fb). The process includes (a) mixing a catalyst, co-catalyst and a haloalkane starting material under conditions suitable to produce a homogeneous mixture; (b) reacting the homogeneous mixture with a haloalkene and/or alkene starting material under conditions suitable to produce a haloalkane product stream; and (c) recovering a haloalkane product from said product stream.
- -
-
Page/Page column 4
(2008/06/13)
-
- Continuous process for preparing halogenated compounds
-
A process for preparing a haloalkane comprising: (a) contacting a haloalkane starting material with an alkene in the presence of an effective amount of a catalyst complex under conditions effective to facilitate an addition reaction and to form a product stream comprising a haloalkane product from the addition reaction, wherein the catalyst complex has a boiling point higher than that of the haloalkane product; and (b) recovering the haloalkane product from the product stream.
- -
-
Page/Page column 5
(2008/06/13)
-
- Method for producing 1,1,1,3-tetrachloropropane and other haloalkanes with iron catalyst
-
A continuous process is provided for the manufacture of haloalkanes by the reaction of carbon tetrachloride with olefins in the presence of iron metal, trialkylphosphate, and ferric chloride. A fraction of the catalyst and co-catalyst are separated after the reaction and recycled. In a preferred application, the olefin is ethene, and the haloalkane product is 1,1,1,3-tetrachloropropane. Two distillation steps take place in order to enhance the production of 1,1,1,3-tetrachloropropane.
- -
-
-
- Lifetime of acyloxy radicals produced by decomposition of acetylpropionyl peroxide
-
The authors consider thermolysis of 0.5 M solutions of acetylpropionyl peroxide in CCl4 and 333 and 343 K as well as photolysis of 0.5 M solutions of acetylpropionyl peroxide in CCl4 and 253-333 K and photolysis of methanol solutions of acetylpropionyl peroxide with added 1 m CCl4 at temperature of 193-253 K.The effects of chemical nuclear polarization and reaction yields were analyzed to determine the decarboxylation rate constants of acyloxy radicals that were produced by thermolysis and photolysis of acetylpropionyl peroxide. - Keywords: acyloxy radical; decarboxylating rate constant; chemical nuclear polarization.
- Skakovskii, E. D.,Lamotkin, S. A.,Tychinskaya, L. Yu.
-
p. 319 - 324
(2007/10/03)
-
- Thermolysis of acetyl propionyl peroxide solutions in carbon tetrachloride
-
Thermolysis of acetyl propionyl peroxide solutions in carbon tetrachloride was examined on the basis of kinetic measurements by means of 1H NMR spectroscopy and observation of chemically induced dynamic polarization on the 1H and 13C nuclei. A scheme of the most probable processes involving acyloxyl radical and solvent molecules was proposed. The contributions of various reaction pathways and the lifetimes of the resulting radicals were estimated.
- Skakovskii,Stankevich,Lamotkin,Tychinskaya,Rykov
-
p. 857 - 862
(2007/10/03)
-