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138 results about "Dichloroethene" patented technology
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Dichloroethene or Dichloroethylene, often abbreviated as DCE, can refer to any one of several isomeric forms of the organochloride with the molecular formula C₂H₂Cl₂: There are three isomers: 1,1-Dichloroethene 1,2-Dichloroethene
Azeotropic and azeotrope-like compositions of e-1,1,1,4,4,4-hexafluoro-2-butene
Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, n-pentane, 2-methylbutane trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, n-butane or isobutane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.
Owner:THE CHEMOURS CO FC LLC
Fluoropropene compounds and compositions and methods using same
InactiveUS20110037016A1Reduce negative impactImprove environmental desirabilitySolvent extractionOther chemical processesHydrocotyle bowlesioidesKetone
Various uses of fluorinated olefin having an MRI value of less than ethane, in combination with one or more other components, including other fluoroalkenes, hydrocarbons; hydrofluorocarbons (HFCs), ethers, alcohols, aldehydes, ketones, methyl formate, formic acid, water, trans-1,2-dichloroethylene, carbon dioxide and combinations of any two or more of these, in a variety of applications, including as blowing agents, are disclosed.
Owner:HONEYWELL INT INC
Azeotrope-like compositions comprising trans-1-chloro-3,3,3-trifluoropropene
ActiveUS20100102273A1Other chemical processesNon-surface-active detergent compositionsZeotropic mixtureMedicinal chemistry
An azeotrope-like mixture consisting essentially of chlorotrifluoropropene and at least one component selected from the group consisting of pentane, hexane, methanol, and trans-1,2-dichloroethene.
Owner:HONEYWELL INT INC
Azeotropic and azeotrope-like compositions of z-1,1,1,4,4,4-hexafluoro-2-butene
Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene with methyl formate, pentane, 2-methylbutane, 1,1,1,3,3-pentafluorobutane, trans-1,2-dichloroethylene, 1,1,1,3,3-pentafluoropropane, dimethoxymethane, or cyclopentane. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.
Owner:THE CHEMOURS CO FC LLC
Azeotropic and azeotrope-like compositions of Z-1,1,1,4,4,4-hexafluoro-2-butene
Owner:THE CHEMOURS CO FC LLC
Azeotropic compositions comprising methyl perfluoropentene ethers for cleaning applications
The present disclosure provides azeotropic and azeotrope-like compositions comprised of methylperfluoropentene ethers and at least one of methanol, ethanol, 2-propanol, hexane, heptane, trans-1,2-dichloroethylene, ethyl formate, methyl formate, HFE-7100, HFE-7200 and 1-bromopropane or combinations thereof. The present disclosure also provides for methods of use for the azeotropic and azeotrope-like compositions.
Owner:EI DU PONT DE NEMOURS & CO
Azeotrope-like compositions comprising trans-1-chloro-3,3,3-trifluoropropene
ActiveUS7935268B2Other chemical processesNon-surface-active detergent compositionsZeotropic mixture1,2-Dichloroethene
Owner:HONEYWELL INT INC
Composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene, apparatus containing same and methods of producing cooling therein
ActiveUS20120167599A1Improve energy efficiencyImprove cooling effectDomestic cooling apparatusCompression machines with non-reversible cycleButeneEngineering
Disclosed herein is an air conditioning or refrigeration apparatus, and in particular, a chiller apparatus containing a composition comprising 1,1,1,4,4,4-hexafluoro-2-butene and 1,2-dichloroethylene, wherein the 1,1,1,4,4,4-hexafluoro-2-butene is cis isomer or primarily cis isomer and wherein the 1,2-dichloroethylene is trans isomer or primarily trans isomer. These chillers may be flooded evaporators or direct expansion evaporators, which utilize centrifugal compressors. Also disclosed herein are methods for producing cooling comprising evaporating a composition comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene in the vicinity of a body to be cooled. Also disclosed herein are compositions comprising cis-1,1,1,4,4,4-hexafluoro-2-butene and trans-1,2-dichloroethylene, wherein the cis-1,1,1,4,4,4-hexafluoro-2-butene is present at 50 to about 60 weight percent.
Owner:THE CHEMOURS CO FC LLC
Monochlorotrifluoropropene compounds and compositions and methods using same
InactiveUS20150231527A1Reduce flammabilityHigh degree of miscibilityOrganic chemistryMolecular sieve catalystsKetonePharmacology
Various uses of monochlorotrifluoropropenes, in combination with one or more other components, including other fluoroalkenes, hydrocarbons; hydrofluorocarbons (HFCs), ethers, alcohols, aldehydes, ketones, methyl formate, formic acid, water, trans-1,2-dichloroethylene, carbon dioxide and combinations of any two or more of these, in a variety of applications, including as blowing agents, are disclosed.
Owner:HONEYWELL INT INC
Method for extracting trans-dichloroethylene from low-boiling residue of ethinyltrichloride production by gas-phase catalytic process
ActiveCN101353289ARealize comprehensive utilizationReduce pollutionHalogenated hydrocarbon separation/purificationBoiling pointGas phase
The invention relates to a method for extracting trans-dichloroethylene from low-boiling-point materials which are used for producing trichloroethylene by the gas phase catalysis. The method is characterized in that the low-boiling-point materials which are used for producing the trichloroethylene by the gas phase catalysis is deacidified, dehydrated and sent in a distilling kettle for distilling, and the trans-dichloroethylene is collected at the temperature of 47-49 DEG C. A trans-dichloroethylene product with the purity being more than 99% can be obtained by the method of the invention. The method utilizes wastes and reduces environmental pollution.
Owner:何勇志
Iron composite particles for purifying soil or ground water, purifying agent containing the iron composite particles, and method for purifying soil or ground water
InactiveUS20060081811A1Efficient and economicalMaterial nanotechnologyWater contaminantsPolychlorinated biphenylMaterials science
Iron composite particles for purifying soil or ground water, comprise an iron component, at least one noble metal selected from the group consisting of ruthenium, rhodium and palladium, and carbon or aluminum, and having a noble metal content of 0.01 to 5.00% by weight and a particle diameter of 0.01 to 1.0 μm. The iron composite particles and the purifying agent according to the present invention are capable of decomposing aliphatic organohalogen compounds such as dichloromethane, carbon tetrachloride, 1,2-dichloroethane, 1,1-dichloroethylene, cis-1,2-dichloroethylene, 1,1,1-trichloroethane, 1,1,2-trichloroethane, trichloroethylene, tetrachloroethylene, 1,3-dichloropropene or the like, and aromatic organohalogen compounds such as dioxins, PCB (polychlorinated biphenyl) or the like, which are contained in soil, ground water or waste water, at ordinary temperature in an efficient and economical manner.
Owner:TODA IND
Trans-1, 2-dichloroethylene and hydrofluorocarbon or alkoxy perfluoroalkane compositions having elevated flash points
InactiveUS20070010421A1Easy and safer handling and transportationGlobal warming potentialNon-surface-active detergent compositionsHeat-exchange elementsAlkoxy group1-Hexene
A tran-1,2-dichloroethylene blend which comprises a combination of a major amount of tran-1,2-dichloroethylene and a minor amount of a hydrofluorocarbon or an alkoxy perfluoroalkane having an elevated flash point is disclosed. The combination exhibits a flash point significantly higher than trans-1,2-dichloroethylene alone while containing only a minor amount of the component exhibiting the high Global Warming Potential. The preferred hydrofluorocarbon is 1,1,1,2,2,3,4,5,5,5-decafluoropentane or 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene and the preferred alkoxy perfluoroalkane is 1-(methoxy)nonafluorobutane.
Owner:ARKEMA INC
Azeotropic compositions comprising fluorinated olefins for cleaning applications
Owner:EI DU PONT DE NEMOURS & CO
Azeotropic and azeotrope-like compositions of methyl perfluoroheptene ethers and trans-1,2-dichloroethylene and uses thereof
ActiveUS20120227764A1Detergent mixture composition preparationChemical paints/ink removersEther1,2-Dichloroethene
Owner:THE CHEMOURS CO FC LLC
Technology for producing trans-1,2-dichloroethylene
InactiveCN101747141AWide variety of sourcesHigh selectivityPreparation by halogen addition1,2-DichloroetheneSafe operation
The invention discloses production technology for producing trans-1,2-dichloroethylene by reaction of acetylene and an oxidant in solution, which is characterized in that: the acetylene and the chlorine-containing metal salt solution react at a certain temperature in solution to form the trans-1,2-dichloroethylene, and the oxidant per se is reduced. The chlorine-containing oxidant comprises FeCl3, TiCl4, CrCl6, CuCl2, SnCl4, HgCl2, and the like. The chlorine-containing oxidant can be one of the FeCl3, TiCl4, CrCl6, CuCl2, SnCl4, HgCl2, and the like, or a composition of several in the FeCl3, TiCl4, CrCl6, CuCl2, SnCl4, HgCl2, and the like. Through the production technology, high-selectivity and high-yield trans-1,2-dichloroethylene product can be obtained; and the technology has the advantages of wide source of raw materials, safe operation and low production cost, and is clean production technology which is convenient to popularize and apply.
Owner:NANTONG TIANHAI CHEM ADDITIVES
Hvac-r flushing solvent
ActiveUS20120145199A1Low toxicityImprove cutting effectPipe supportsServomotor componentsHydrofluoroetherN-Butyl acetate
A flushing solvent for flushing an HVAC-R system is a mixture of hydrofluoroether, acetone, t-Butyl acetate, and trans 1,2 Dichloroethylene.
Owner:DIVERSITECH
Improved preparation method of nitenpyram
The invention relates to an improved preparation method of nitenpyram. The method comprises steps as follows: firstly, 1,1-dichloroethylene has a reaction with a nitration agent comprising hydrochloric acid and sodium nitrate to generate 1,1,1-trichlorine-2-nitroethane, and the 1,1,1-trichlorine-2-nitroethane has an elimination reaction with NaHCO3 to generate a 1,1-dichlorine-2-nitroethylene intermediate; secondly, 2-chlorine-5-chloromethylpyridine has a reaction with ethylamine, and an ethylamine intermediate is prepared; thirdly, the ethylamine intermediate has a reaction with 1,1-dichlorine-2-nitroethylene intermediate and monomethylamine, and the final product nitenpyram is generated. NaNO3 is used to replace traditional nitric acid to serve as a target phase transfer catalyst, the reaction selectivity is improved, the yield is higher, and the operation is safer.
Owner:SHANGHAI JINJING CHEM CO LTD
Azeotropic and azeotrope-like compositions of z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene, and cyclopentane
Azeotropic or azeotrope-like compositions are disclosed. The azeotropic or azeotrope-like compositions are mixtures of Z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene and a third component. Also disclosed are compositions where the third component is cyclopentane, methanol, dimethyoxymethane, methyl formate or perfluoro ethyl isopropyl ketone. Also disclosed is a process of preparing a thermoplastic or thermoset foam by using such azeotropic or azeotrope-like compositions as blowing agents. Also disclosed is a process of producing refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.
Owner:EI DU PONT DE NEMOURS & CO
Method for inhibiting generation of grease in alkaline tower
The invention relates to a method for inhibiting generation of grease in an alkaline tower, and mainly solves the problems that the alkaline tower is easy to block and is inconvenient for operation caused by poor grease inhibiting effect in a conventional technology. The technical solution of the method solves the problems well by employing on-line continuously injecting inhibitor, wherein the inhibitor is at least one selected from diethylenetriamine, triethylenetetramine, tetraethylenepentamine, dipropylenetriamine, tripropylenetetramine, tetrapropylenepentamine. The method can be applied to alkaline towers of industrial apparatuses of preparing ethane from petroleum, preparing ethylene from ethanol, preparing alkene from methanol, and preparing propylene, vinyl acetate, dichloroethylene and epoxypropane from methanol, etc.
Owner:CHINA PETROLEUM & CHEM CORP +1
Process for synthesizing sex pheromone of pine caterpillar
ActiveCN102613177AEasy to operateSynthetic raw materials are readily availableBiocidePreparation by isomerisationGrignard reagentIodide
The invention discloses a process for synthesizing sex pheromone of pine caterpillar, which employs 2-hexyne-1-alcohol as an initial raw material, three-bond positional transference is carried out under the effect of lithium and propane diamine to obtain 5-hexyne-1-alcohol; under acidic condition, 5-hexyne-1-alcohol is reacted with dihydropyran to obtain 1-THP-5-hexyne-1-alcohol protected by THP on hydroxyl, Under co-catalysis of metal palladium and cuprous iodide, 1-THP-5-hexyne-1-alcohol and trans-dichloroethylene are subjected to coupling reaction to generate conjugate enyne(7E)-1-THP-8-chlorine-5-alkyne-7-alkene-1-octanol; under the catalysis of metallic iron, (7E)-1-THP-8-chlorine-5-alkyne-7-alkene-1-octanol and a n-Butyl bromide grignard reagent are further subjected to coupling reaction to obtain (7E)-1-THP-5-alkyne-7-alkene-1-dodecanol, under the catalytic reduction of metal zinc, (5Z, 7E)-1-THP-dodecanol dienol; under the camphor sulfonic acid condition, (5Z, 7E)-1-THP-dodecanol dienol removes the THP protective group to obtain the final target product (5Z, 7E)-dodecanol dienol. The method of the invention has the advantages of easily available synthesis raw materials, low cost, mild reaction condition, easy operation, high yield and good stereoselectivity.
Owner:WENZHOU MEDICAL UNIV +1
Method for inhibiting grease in alkaline washing towers
The invention relates to a method for inhibiting grease in alkaline washing towers to mainly solve problems comprising easy alkaline washing tower obstruction and inconvenient operation caused by bad grease inhibition effects in previous technologies. According to the invention, an inhibitor is injected in an online continuous manner, wherein the inhibitor comprises one or two of two compounds having structures shown in the specification; R in the structures is an alkyl group or an aromatic group containing 0-15 carbon atoms. The above technical scheme well solves the problems, and the method can be used in industrial devices the alkaline washing towers for petrochemical ethylene, ethanol-to-ethylene, methanol-to-olefin, methanol-to-propylene, vinyl acetate, dichloroethylene, epoxy propane and the like.
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of synthetic method of trans-1,1,1,4,4,4-hexafluoro-2-butene
ActiveCN104370690BLow costWide variety of sourcesPreparation by hydrogen halide split-offPreparation by halogen replacementGas phaseEthane Dichloride
Owner:XIAN MODERN CHEM RES INST
Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene
Owner:HONEYWELL INT INC
Nonflammable compositions comprising fluorinated compounds and use of these compositions
InactiveUS20130079267A1Detergent compounding agentsNon-surface-active detergent solventsHydrofluoroetherElectronic component
Nonflammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers, and fluoroketones; 1,2-dichloroethylene, especially trans-1,2-dichloroethylene; and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.
Owner:SOLVAY FLUOR GMBH DE
Water-based rust conversion anticorrosive coating for steel structures, and preparation method thereof
ActiveCN111662603AImprove corrosion resistanceImprove air tightnessConjugated diene hydrocarbon coatingsAnti-corrosive paintsFirming agentPolyaniline
The invention relates to a water-based rust conversion anticorrosive coating for steel structures and a preparation method thereof, and belongs to the technical field of anticorrosive coatings. The water-based rust conversion anticorrosive coating is composed of a component A and a component B in a mass ratio of (5-10): 1; the component A comprises, by weight, 50-80 parts of a water-based epoxy-vinylidene chloride-acrylic emulsion, 5-10 parts of water-based polyaniline elastic nano-modified particles, 10-20 parts of a water-based cosolvent, 2-3 parts of a water-based rust conversion agent, 0.4-1.2 parts of a water-based defoaming agent, 0.2-0.5 part of a water-based thixotropic agent and 10-15 parts of deionized water; and the component B comprises, by weight, 70-100 parts of a water-basedmodified amine curing agent and 0.5-2 parts of a water-based penetrating agent. The coating prepared by the invention has vinylidene chloride resin shielding property and epoxy resin salt spray resistance, and the addition of the water-based polyaniline elastic nano-modified particles improves the corrosion resistance of the coating on the rusty metal surface.
Owner:洛阳双瑞防腐工程技术有限公司
Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film
The present invention provides a polyvinyl dichloride resin compound, on the surface of a powdery polyvinyl dichloride resin, relative to 100 parts by weight of the polyvinyl dichloride resin , with 0.01 to 0.20 parts by weight of at least one wax powder selected from polyethylene wax and oxidized polyethylene wax, and 0.01 to 0.20 parts by weight of at least one wax selected from high-density polyethylene and low-density polyethylene A polyethylene resin powder, and the invention also provides a method for manufacturing a biaxially stretched film obtained by biaxially stretching the composite by an inflation method, and the biaxially stretched film.
Owner:KUREHA KAGAKU KOGYO KK
Synthetic process of 1,2 difluoro-1,2 dichloroethylene
ActiveCN105801335AReduce insecurityNot easy to agglomeratePreparation by dehalogenationAlcoholDistillation
The invention discloses a synthetic process of 1,2 difluoro-1,2 dichloroethylene. The synthetic process comprises the following steps: dechlorination reaction: causing tetra-chlorodifluoroethane (R112) which is used as a raw material and zinc powder to carry out a dechlorination reaction under a condition of the presence of ethyl alcohol to generate difluoro-dichloroethene; distillation operation: slowly adding sodium ethoxide into distillate at the temperature of 0-60DEG C to carry out reaction distillation operation, causing impurities 1.1 difluoro-2.2 dichloroethene and alcohol to react to generate ether in the presence of catalyst, then, carrying out distillation operation to remove impurity ether, and obtaining the finished product 1,2 difluoro-1,2 dichloroethylene. An intermittent process is adopted, the distillate is added into a reaction still by metering and is stirred, the catalyst is slowly added to carry out the reaction distillation operation, and fractionation is carried out to obtain the product, wherein the purity of the product is greater than or equal to 99.5%, and the yield of the product is greater than or equal to 95%.
Owner:许茂乾
Azeotropic and azeotrope-like compositions of z-1,1,1,4,4,4-hexafluoro-2-butene, trans-1,2-dichloroethylene, and a third component
Owner:THE CHEMOURS CO FC LLC
Food anti-mildew bactericide
InactiveCN105105279AImprove storage effectThe preparation process is simpleFood preservationBiotechnologyEugenol
The invention relates to a food anti-mildew bactericide. The anti-mildew bactericide is prepared from the following components in parts by mass: 42-46 parts of piperine, 44-48 parts of carbendazim, 40-44 parts of N-dichloroethenyl salicylamide, 44-48 parts of butylated hydroxyanisole, 40-44 parts of tetrabutyl titanate, 44-48 parts of polyoxyethylene sorbitan fatty acid ester, 40-44 parts of ketoconazole, 46-50 parts of prochloraz, 40-44 parts of litsea cubeba oil, 44-48 parts of sodium dichloroisocyanurate, 40-44 parts of panax notoginseng saponins, 44-48 parts of eugenol, 40-44 parts of tween 20, 44-48 parts of potassium sorbate, 40-44 parts of dill seed volatile oil, 44-48 parts of vine tea extract, 40-44 parts of nano-grade titanium dioxide and 44-48 parts of 10,10'-oxybisphenoxarsine. The food anti-mildew bactericide has relatively excellent waterproofing anti-mildew antibacterial performance, can be used as food anti-mildew bactericides, can be used for improving the food storage effect and avoiding mildew, and has a relatively good sterilizing effect.
Owner:王璐
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