摘要:
Disclosed are processes for the production of fluorinated olefins, preferably adapted to commercialization of CF3CF═CH2 (1234yf). In certain preferred embodiments the processes comprise first exposing a compound of Formula (IA) C(X)2═CClC(X)3 (IA) where each X is independently F, Cl or H, preferably CCl2═CClCH2Cl, to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce at least one chlorofluoropropane, preferably in accordance with Formula (IB): CF3CClX′C(X′)3 Formula (IB) where each X′ is independently F, Cl or H, and then exposing the compound of Formula (IB) to one or more sets of reaction conditions, but preferably a substantially single set of reaction conditions, effective to produce a compound of Formula (II) CF3CF═CHZ (II) where Z is H, F, Cl, I or Br.
摘要:
A process for converting a tertiary halogenated hydrocarbons in a tertiary halogenated hydrocarbon-containing stream to a corresponding unhalogenated or less-halogenated unsaturated hydrocarbon product with the release of hydrogen halide involves contacting the tertiary halogenated hydrocarbon with a sorbent-type dehydrohalogenation catalyst in a reaction zone and optionally passing a stripping gas through the reaction zone to remove vapor phase reaction products from the reaction zone. A process for removing a tertiary chlorinated hydrocarbon impurity from 1,3-dichloro-1-propene involves contacting a mixture containing the 1,3-dichloro-1-propene and the tertiary chlorinated hydrocarbon impurity with a dehydrochlorination catalyst effective to catalyze a conversion of the tertiary chlorinated hydrocarbon impurity to a corresponding unchlorinated or less-chlorinated unsaturated hydrocarbon and hydrogen chloride and distilling the 1,3-dichloro-1-propene to produce a purified cis-1,3-dichloro-1-propene fraction and a purified trans-1,3-dichloro-1-propene fraction.
摘要:
The present invention relates to a composition based on trans-1,2-dichloroethylene. A subject-matter of the invention is more particularly a nonflammable composition comprising trans-1,2-dichloroethylene and at least two hydrofluorocarbons and its uses.
摘要:
The present invention relates to the stabilization of trans-1,2-dichloroethylene (TDCE) for the purpose of its use in the treatment of solid surfaces.The stabilized solution comprises at least one acid acceptor, at least one radical scavenger, at least one Lewis base and at least one compound possessing a buffering effect.
摘要:
The present invention relates to the stabilization of trans-1,2-dichloroethylene (TDCE) for the purpose of its use in the treatment of solid surfaces. The stabilized solution comprises at least one acid acceptor, at least one radical scavenger, at least one Lewis base and at least one compound possessing a buffering effect.
摘要:
Less colored trans-1,3-dichloropropene and a process for producing it, are presented.A composition comprising cis-1,3-dichloropropene, trans-1,3-dichloropropene and C6 compounds, is subjected to a distillation step and to a step of reacting chlorine or bromine, to remove cis-1,3-dichloropropene as a low boiling component, and then the residue is distilled to remove the chlorinated C6 compounds as a high boiling component and to obtain trans-1,3-dichloropropene as a low boiling component.
摘要翻译:提出了较少着色的反式-1,3-二氯丙烯及其生产方法。 将包含顺式-1,3-二氯丙烯,反式-1,3-二氯丙烯和C 6 H 6化合物的组合物进行蒸馏步骤和使氯或溴反应的步骤,以除去顺式 - 1,3-二氯丙烯作为低沸点组分,然后将残余物蒸馏以除去作为高沸点组分的氯化C 6 H 6化合物,得到反式-1,3-二氯丙烯,为低沸点 零件。
摘要:
PROCESS FOR REACTION OF A MIXTURE OF ETHYLENE, CHLORINE, 1,2-DICHLOROETHANE AND 1,1,2-TRICHLOROETHANE TO PRODUCE 1,1-DICHLOROETHYLENE, 1,2-DICHLOROETHYLENES ARE VINYL CHLORIDE AND THE COMBINATION THEREOF WITH AN OXYCHLORINATION REACTION WHICH MAKES USE OF COMPONENTS FROM THE DEHYDROCHLORINATION REACTION AND WHICH MAKES AVAILABLE COMPONENTS FOR THE CHLORINATION REACTION.