- Synthesis and properties of copolymers of N,N-dimethyl-N,N-bis(β-chloroallyl)ammonium chloride with acrylamide
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A method of synthesis of cationic polyelectrolites is suggested based on N,N-dimethyl-N,N-bis(β-chloroallyl)ammonium chloride prepared from organochlorine wastes from epichlorohydrin production and acrylamide. Flocculating ability of the copolymer was studied.
- Shaglaeva,Bayandin,Pozhidaev, Yu. N.
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- New approach to processing of chlorine-containing wastes: Synthesis of 2,3-dichloropropene from 1,2,3-trichloropropane
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Possibilities of utilization of by-products formed in manufacture of epichlorohydrin are considered. A promising way to utilize wastes from production of epichlorohydrin by synthesis of 2,3-dichloropropene from 1,2,3-trichloropropane is suggested.
- Trofimova,Dronov,Shaglaeva,Sultangareev
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- Continuous automatic preparation method of 2,3-dichloropropene
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The invention discloses a continuous automatic preparation method of 2,3-dichloropropene. The method comprises the following steps that: reaction materials including 1,2,3-trichloropropane, a catalystand liquid caustic soda are continuously pumped into a reaction mixer through a metering pump according to a preset proportion to be subjected to a continuous reaction to generate 2,3-dichloropropene, and the catalyst is at least one of triethyl benzyl ammonium chloride, tetrabutyl ammonium hydroxide and polyethylene glycol-400. The yield is not influenced by changing the catalyst or adjusting the use amount of the catalyst by continuously and simultaneously dropwise adding reaction; compared with an existing process, the method has the advantages that the product quality, the product yield and the like are greatly improved by 15% or above, the production cost is further reduced, the production process is safe and controllable, and thus the green, environment-friendly and safe industrialproduction process is achieved.
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Paragraph 0023-0040
(2020/11/01)
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- Synthesis method of 2,3-dichloropropene
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The invention discloses a synthesis method of 2,3-dichloropropene. The synthesis method comprises the step that 2,3-dichloropropene is obtained through cleavage reaction of 1,2,3-trichloropropane. Thesynthesis method is simple in technology, continuous production is adopted to change a gas-liquid reaction into a gas-gas reaction, the reaction route is short, the cost is low, the benefit is high,and the mole yield is 98% (relative to 1,2,3-trichloropropane). The production efficiency and the equipment utilization rate are high, nitrogen is utilized to dilute and protect 2,3-dichloropropene, the product quality is stable, and the technology is safe and reliable. The technological design is reasonable, the process is safe and controllable, the production fee is low, and no waste water is generated.
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Paragraph 0047-0051
(2018/11/03)
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- 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
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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.
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Page/Page column 5
(2016/05/09)
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- PROCESSES FOR PREPARING 1,1,2,3-TETRACHLOROPROPENE
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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.
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Page/Page column 2
(2009/02/11)
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- MANUFACTURE OF DICHLOROPROPANOL
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Manufacture of dichloropropanol Process for manufacturing dichloropropa nol wherein a glycerol-based product comprising at least one diol containi ng at least 3 carbon atoms other than 1,2- propanediol, is reacted with a chlorinati ng agent, and of products derived from dichloropropanol such as ep ichlorohydrin and epoxy resins. No figure.
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Page/Page column 19-21
(2009/03/07)
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- Synthesis and Herbicidal Activity of 2-Cyano-3-(2-chlorothiazol-5-yl)methylaminoacrylates
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A series of 2-cyano-3-(2-chlorothiazol-5-yl)methylaminoacrylates were synthesized as herbicidal inhibitors of PSII electron transport. All of these compounds exhibited good herbicidal activities. In particular, (Z)-ethoxyethyl 2-cyano-3-isopropyl-3-(2-chlorothiazol-5-yl)methylaminoacrylate showed excellent herbicidal activities even at a dose of 75 g/ha. A suitable group at the 3-position of acrylate was essential for high herbicidal activity. 2-Cyanoacrylates containing a 2-chloro-5-thiazolyl group are a novel class of herbicides and display herbicidal activities comparable to existing analogues bearing chloropyridyl or chlorophenyl.
- Wang, Qingmin,Li, Heng,Li, Yonghong,Huang, Runqiu
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p. 1918 - 1922
(2007/10/03)
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- Process for producing 1-substituted-hydantoins
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The subject is to provides a process for producing 1-substituted-hydantoins of Formula I: STR1 wherein R1 represents d hydrocarbon group which may be substituted and others, cheracterized by reacting N-sustituted-N-alkcycarbonylamnilo-acetonitrile of Formula II: STR2 wherein R2 represents an alkyl group and others, with an alkali metal hydroxides or the like and then treating with an acid.
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- Process for producing 1-substituted-hydantoins
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The subject is to provides a process for producing 1-substituted-hydantoins of Formula I: wherein R1represents a hydrocarbon group which may be substituted and others,characterized by reacting N-substituted-N-alkoxycarbonylamino-acetonitrile of Formula II: wherein R2represents an alkyl group and others,with an alkali metal hydroxides or the like and then treating with an acid.
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- Oxychlorination and combustion of propene on fly-ash. Formation of chlorinated benzenes, dibenzodioxines and mono- and dibenzofurans
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Heterogenous gas phase reactions of propene on fly ash in the presence of hydrochloric acid and air between 300-580 deg C have been investigated. At mild conditions only the formation of polychlorinated C1, C2 and C3 species takes place. At the high tempe
- Jarmohamed, W.,Mulder, P.
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p. 1911 - 1918
(2007/10/03)
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- Process for producing furylpropargylcarbinol and a derivative thereof
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A process for producing furylpropargylcarbinol or a derivative thereof represented by the formula (I): STR1 wherein R1 represents hydrogen or methyl, wherein comprises subjecting a haloallylfurylcarbinol or a derivative thereof represented by the formula (II): STR2 wherein R1 represents hydrogen or methyl and R2 represents chlorine, bromine or iodine, to a dehydrohalogenation reaction with a base in a reaction solvent. Furylpropargylcarbinol and a derivative thereof produced according to the process of the present invention are very important as intermediates of agricultural chemicals, perfumes and medicines, and particularly applicable to intermediates of prallethrin.
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- The Thermal Decomposition of 1,1-Dichlorocyclopropane
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The thermal gas phase isomerization of 1,1-dichlorocyclopropane yields 2,3 dichloropropene and 1,1-dichloropropene in two parallel reaction channels.The product ratio was studied in the range 610-725 K. - Keywords: Reaction kinetics / Isomerization / Unimolecular reaction
- Heydtmann, H.,Koerbitzer, B.
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p. 255 - 258
(2007/10/02)
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- The Copyrolysis of 1,2,3-Trichloropropane and Methanol on Activated Alumina
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The copyrolysis of 1,2,3-trichloropropane and methanol gave 1,2-dichloro-3-methoxypropane as well as dichloropropenes and their derivatives.The formation of 1,2-dichloro-3-methoxypropane is also described.
- Shinoda, Kiyonori,Yasuda, Kensei
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p. 633 - 634
(2007/10/02)
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