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US 5,177,233 AGranted
Catalyst system and use for the preparation of 1,2-dichloroethane
AssigneeWacker Chemie AG
InventorsLudwig Schmidhammer, Klaus Haselwarter, Hermann Klaus, Gerhard Dummer, Klaus-Peter Mohr
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Abstract
A catalyst system for the preparation of 1,2-dichloroethane by reacting ethylene and chlorine in a solvent, if desired, in the presence of an inhibitor for reducing the formation of byproducts. The catalyst system comprises a phenolate/chlorine complex. The invention also relates to a process for the chlorination of ethylene using indicated catalyst system.
Claims7
A catalyst system useful for the preparation of 1, 2-dichloroethane from ethylene and chlorine, said catalyst system comprising a phenolate/chlorine complex of the formula
- Me.sup.+n [Z.sup.+m Cl.sub.m.L].sub.n
- wherein
- n is an integer from 1 to 3
- m is an integer from 1 to 6
- Cl is a chloride anion,
- Me.sup.+ is a hydrogen proton and a metal cation of elements of the 1st and 2nd main group or of the lanthanide group of the Periodic Table of the Elements,
- Z.sup.+ is a metal cation of elements of the 3rd, 4th, 5th or 6th main group or of the 1st,4th,6th or 8th sub-group of the Periodic Table of the Elements, and
- L is at least one phenolate anion selected from the group consisting of ##STR4## wherein X denotes hydrogen or up to 4 chlorine atoms, and R is at least one member selected from the group consisting of hydrogen, hydroxyl, halogen, and linear or branched alkyl, chloroalkyl, alkoxy and chloroalkoxy of 1 to 6 carbon atoms, and wherein the R's need not be the same in the same anion.
5 more elements
Dependencies are inferred from the claim text.