Abstract: A vapor phase process for selective conversion of fluorodichloromethane and carbon tetrachloride to fluorotrichloromethane, difluorodichloromethane, difluorochloromethane and chloroform by contacting a solid catalyst of an activated mixture of iron oxide and rare earth oxides.

Abstract: The disclosure relates to a process for making 1,2-dichloroethane by reacting ethylene and chlorine in a reaction zone having a liquid medium containing chlorinated C.sub.2 -hydrocarbons circulated therein. To this end, the disclosure provides:(a) for approximately equimolar proportions of ethylene and chlorine to be introduced into the circulated liquid medium; for the whole to be reacted in a reaction zone at a temperature of about 75.degree. up to 200.degree. C.

Abstract: A process for hydrogenating acetylene in hydrogen chloride gas using the catalytic palladium supported on silicon carbide carrier whose iron content is specified to be not more than 1,000 ppm. The catalyst has the advantages of enhancing the conversion of acetylene into ethylene, improving the selectivity of ethylene, and retaining catalytic activity over a long time at a large space velocity. This process can be effectively applied to the hydrogenation of acetylene in hydrogen chloride gas separated from the thermally decomposed products of 1,2-dichloroethane which occurs in the production of vinyl chloride; namely, the hydrogen chloride gas that contains thus hydrogenated acetylene (ethylene) can be recycled in such an effective way that 1,2-dichloroethane can be produced economically.

Abstract: Halogenated, unsaturated alcohols are dehydrated by contacting the alcohol and a carrier gas with a silica alumina catalyst to form dienes of the formula: ##STR1## wherein each X is independently hydrogen, fluorine chlorine, or bromine with the proviso that no more than one of them is hydrogen, and each R is independently hydrogen, alkyl, aralkyl, alkaryl, or aryl.

Abstract: Hexadecene derivatives of the formulae: ##STR1## and ##STR2## in which X and X.sub.1, which may be identical or different, each represent hydrogen or chlorine, and their mixtures, are useful in the preparation of tocopherol and tocopherol acetate.

Abstract: The energy requirements for preparing vinyl chloride monomer can be reduced by a process which includes the steps of purifying by distillation ethylene dichloride, compressing the ethylene dichloride vapor from the distillation column to a temperature and pressure sufficient for direct feed to a pyrolysis furnace. Up to 80% of the heat presently used after distillation and before pyrolysis can be saved.

Abstract: The substitution chlorination reactions of organic compounds are carried out by means of molecular chlorine, using, as a radical initiator, decachlorobutane or an octachlorobutane such as octachlorobut-1-ene or a mixture containing these two products.Good degrees of conversion and good yields are obtained at moderate temperatures.The process is, for example, applicable to the substitution chlorination of benzene and of chloroform.

Abstract: A catalyst for removing acetylenic impurities from gaseous organic product streams, comprising at least Fe and Ni, other elements from Groups 8, 1b, 2b, 4b, 6b and 7b of the Periodic Table, an alkaline earth metal and an alkali metal.

Abstract: Hydrocarbons and other compounds are halogenated to halocarbon products by contact with a halocarbon in the presence of an acidic zeolite catalyst such as ZSM-5. The process is particularly useful for the halogenation of methane to form chemicals of higher value.

Abstract: Perfluorobutadiene and higher perfluoroalkadienes, with terminal double bonds, are obtained from .alpha.,.omega.-diiodoperfluoroalkanes by deiodofluorination realized by using an organometallic compound, in the presence either of an aprotic solvent belonging to the class of hydrocarbons, or of an aprotic polar solvent, with short reaction times.

Abstract: Reaction of a perfluorinated iodide with an olefin initiated by a sulfinate salt to prepare fluorinated iodide and diiodide monomers and surface active agents.

Abstract: The invention relates to a process for preparing p-chlorotoluene and/or m-chlorotoluene by ring-chlorination of toluene by using the following two pages (a) and (b) when further processing the toluene chlorination product composed of mixed isomers:(a) Isolation of p-chlorotoluene from a mixture of o-, m- and p-chlorotoluene by selective adsorption of p-chlorotoluene onto a mesoporous or macroporous zeolite and subsequent desorption of p-chlorotoluene(b) Treatment of an o-chlorotoluene-rich mixture of isomers with an isomerization catalyst.For the exclusive preparation of p-chlorotoluene first p-chlorotoluene is isolated and removed from the toluene chlorination product in stage (a). The remaining mixed isomers are then treated in stage (b) to increase their content of m- and p-isomers and then returned into stage (a).

Abstract: Olefins containing at least 7 carbon atoms are used to remove molecular chlorine form compositions comprising 1,2-dichloroethane and a contaminating amount of molecular chlorine.

Abstract: A process is disclosed for preparing 1,1,2,3-tetrachloropropene comprising allylic rearrangement of 2,3,3,3-tetrachloropropene using a substantially anhydrous ferric chloride catalyst. Alternatively, 1,1,2,3-tetrachloropropene is prepared by dehydrochlorination of 1,1,1,2,3-pentachloropropane using a ferric chloride catalyst. Process schemes commencing with the preparation of the precursor 1,1,1,3-tetrachloropropane by reaction of ethylene with carbon tetrachloride are also disclosed.

Abstract: In the ring chlorination of toluene, a particularly high proportion of p-chlorotoluene is obtained by using in addition to the customary Lewis acid catalysts as cocatalyst a chlorination product of 2,8-dimethylphenoxathiin which comprises in the main 1,3,7,9-tetrachloro-2,8-dimethylphenoxathiin of the formula ##STR1##

Abstract: A catalyst for removing acetylenic impurities from gaseous organic product streams, comprising at least Fe and Ni, other elements from Groups 8, 1b, 2b, 4b, 6b and 7b of the Periodic Table, an alkaline earth metal and an alkali metal.

Abstract: This process stems from the discovery that the solubility of water in vinyl chloride monomer ("VCM") is so low in a cold aqueous caustic solution at a temperature below 0.degree. C., that the aqueous solution will remove water dissolved in the monomer, and at the same time, will neutralize the HCl associated with the monomer and prevent the formation of acetylene. This discovery makes it possible to dry and neutralize a HCl and water-containing vinyl chloride ("VCl") stream, by intimately contacting the stream with a cold aqueous 2 to 30 wt % caustic soda solution at a temperature below 25.degree. F. and above the freezing point of the caustic solution. In a commercial VCM producing facility, VCl can be "finished" in a "stand-alone" processing facility with greater economy than in a conventional VCM plant, yet avoid the hazards of operating a conventional VCl stripping column and scrubbers packed with solid caustic pellets.

Abstract: A process for the coupling of a chloroperfluoroalkane having a --CFCl.sub.2 moiety which comprises heating the alkane at a temperature of about 150.degree. to 260.degree. C. in the presence of at least about 0.1 times the molar amount each of copper and zinc at a mole ratio of copper:zinc from about 2:1 to 1:2. The product is obtained in relatively high yield and conversion.

Abstract: A process for preparing ring-halogenated vinyl aromatic monomers comprising reacting ring-halogenated (alpha- or beta-bromoethyl)benzenes or ring-halogenated (alpha- or beta-bromoethyl)toluenes with a strong aqueous alkali base in the presence of a poly(ethylene glycol) catalyst and an amine selected from the group consisting of the structure: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.5 are independently selected from the group consisting of hydrogen and C.sub.1 to C.sub.10 alkyl groups. The organic phase is separated, washed and neutralized and the ring-halogenated vinyl aromatic monomer is recovered.

Abstract: 2,3-Dichlorobutadiene-(1,3) is obtained from 2,3,4-trichlorobutene-1 by dehydrohalogenation in the presence of a phase transfer catalyst, an inhibitor and oxygen according to an improved process in which the aqueous solution of an alkali metal hydroxide is added to the mixture of trichlorobutene, catalyst, inhibitor and optionally water, and the reaction is carried out at a temperature of from -10.degree. to +60.degree. C. under an inert gas which contains from 0.1 to 8% by weight of oxygen.