Polymerization of ethylenically unsaturated hydrocarbons
AssigneeStudiengesellschaft Kohle mbH
InventorsKarl Ziegler, deceased, Heinz Breil, Erhard Holzkamp, Heinz Martin
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Abstract
Alpha olefins are polymerized alone or in admixture at comparatively low pressures to produce polymers employing a two-component catalyst wherein one component is an organozinc or organomagnesium compound, e.g. zinc diethyl, magnesium diphenyl, propyl magnesium chloride, etc. The other component is a salt, oxide or hydroxide of a metal of Group IV-B, V-B or VI-B of the Periodic System, including thorium and uranium.
Claims29
Method for the production of polymers which comprises contacting at least one alpha-olefin selected from the group consisting of ethylene, propylene and isobutylene, at a pressure below 100 atmospheres, with a catalyst formed from a mixture of a first and second component, said first component being present in about 0.1 to 12 times the molar amount of the second component and essentially consisting of a magnesium or zinc di-lower alkyl and said second component essentially consisting of a non-ionized heavy metal compound selected from the group consisting of salts and freshly precipitated oxides and hydroxides of metal of groups IV-B, V-B, and VI-B of the Periodic System, including thorium and uranium, and recovering the high molecular polymer formed.
Method for the production of polymers which comprises contacting ethylene at a pressure below 100 atmospheres with a catalyst formed from a mixture of a first and second component, said first component being present in about 0.1to 12 times the molar amount of the second component and essentially consisting of a metal compound of the general formula MeR'R" in which R' is a member selected from the group consisting of alkyl, aryl, aralkyl and alkyl aryl radicals, R" is a member selected from the group consisting of alkyl, aryl, aralkyl and alkyl aryl radicals and halogen atoms, and Me is a metal selected from the group consisting of magnesium and zinc, said second component essentially consisting of a non-ionized heavy metal compound selected from the group consisting of salts and freshly precipitated oxides and hydroxides of metals of groups IV-B, V-B, and VI-B of the Periodic System, including thorium and uranium, and recovering the high molecular polymer formed.
Method for the production of polymers which comprises contacting an alpha-olefin with a catalyst formed by a mixture of a first and second component, said first component essentially consisting of a magnesium or zinc di-lower alkyl and said second component essentially consisting of a non-ionized heavy metal compound selected from the group consisting of salts and freshly precipitated oxides and hydroxides of metals of groups IV-B, V-B, and VI-B of the Periodic System, including thorium and uranium, and recovering the high molecular polymer formed.
Method for the production of polymers which comprises contacting ethylene at a pressure below 100 atmospheres with a catalyst formed from a mixture of a first and second component, said first component being present in about 0.1 to 12 times the molar amount of the second component and essentially consisting of a metal compound of the general formula
- R Mg Y
- wherein R is a hydrocarbon radical, Y is a substituent selected from the group consisting of R, a halogen atom and OR', and R' is a hydrocarbon radical, said second component essentially consisting of a non-ionized heavy metal compound selected from the group consisting of salts and freshly precipitated oxides and hydroxides of metals of groups IV-B, V-B, and VI-B of the Periodic System, including thorium and uranium, and recovering the high molecular polymer formed.
Method for the production of polymers which comprises contacting ethylene at a pressure below 100 atmospheres with a catalyst formed from a mixture of a first and second component, said first component being present in about 0.1 to 12 times the molar amount of the second component and essentially consisting of a metal compound of the general formula
- R Zn Y
- wherein R is a hydrocarbon radical, Y is a substituent selected from the group consisting of R, a halogen atom and OR', and R' is a hydrocarbon radical, said second component essentially consisting of a non-ionized heavy metal compound selected from the group consisting of salts and freshly precipitated oxides and hydroxides of metals of groups IV-B, V-B, and VI-B of the Periodic System, including thorium and uranium, and recovering the high molecular polymer formed.
The process which comprises contacting ehtylene with a polymerization initiator consisting essentially of a di-lower alkyl zinc and titanium tetrachloride in the presence of an inert organic solvent.
Dependencies are inferred from the claim text.