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US 3,948,741 AGranted
Liquid phase chlorination of normal paraffins
AssigneeTexaco Inc.
InventorDavid R. McCoy
Life of this patent
Estimating the term…
Abstract
Selective chemical processing of normal paraffin hydrocarbons may be carried out with increased selectivity by reacting a normal paraffin hydrocarbon reactant, in the presence of inert solvents, in a free radical (e.g., photochemically) initiated reaction.
Claims20
The method which comprises
- forming a charge mixture consisting essentially of liquid phase and containing (i) a normal paraffin hydrocarbon and (ii) a diluent-solvent selected from the group consisting of chlorinated aliphatic hydrocarbons, fluorinated aliphatic hydrocarbons, and chlorinated fluorinated aliphatic hydrocarbons, said diluent-solvent being present in said charge mixture in amount above about 65 volume percent;
- chlorinating said normal paraffin hydrocarbon in said charge mixture in the presence of a free radical initiator, thereby forming reaction mixture containing a 1-chloro normal alkane;
- and
- recovering said reaction mixture containing said 1-chloro normal alkane.
1 more element
The method which comprises
- photochemically chlorinating a normal C.sub.8 to C.sub.18 paraffin hydrocarbon, in the presence of visible light, in liquid phase with chlorine in the presence of, as diluent-solvent, a perchlorinated lower alkane, thereby forming a reaction mixture containing a 1-chloroalkane having 8-18 carbon atoms;
- and
- recovering said reaction mixture containing said 1-chloroalkane having 8-18 carbon atoms.
The method which comprises
- forming a charge mixture consisting essentially of liquid phase and containing (i) a normal paraffin hydrocarbon having 8-18 carbon atoms and (ii) at least one diluent-solvent selected from the group consisting of chlorinated aliphatic hydrocarbons, fluorinated aliphatic hydrocarbons, and chlorinated fluorinated aliphatic hydrocarbons, said diluent-solvent being present in amount of at least about 65 volume percent of said charge mixture;
- chlorinating said normal paraffin hydrocarbon in said sharge mixture in the presence of electromagnetic radiation of wave length of 2900-7000 angstrom units at temperature of -20.degree.C. to 100.degree.C., thereby forming a reaction mixture containing a 1-chloro normal alkane;
- and
- recovering said reaction mixture containing said 1-chloro normal alkane.
1 more element
The method which comprises
- forming a charge mixture containing (i) a normal paraffin hydrocarbon having 8-18 carbon atoms and (ii) carbon tetrachloride in amount of at least about 91 volume percent of the total of said hydrocarbon and said carbon tetrachloride;
- chlorinating said normal paraffin hydrocarbon in said charge mixture in the presence of electromagnetic radiation of wave length of 2900-7000 angstrom units at temperature of -20.degree.C. to 100.degree.C., thereby forming a reaction mixture containing a 1-chloro normal alkane;
- and
- recovering said reaction mixture containing said 1-chloro normal alkane.
1 more element
Dependencies are inferred from the claim text.