Claims
- 1. A process for the preparation of a polyalk-1-ene, which process consists essentially of polymerizing an alk-1-ene with a polymerization catalyst prepared by a process consisting essentially of contacting essential components (a) bis(cyclopentadienyl)-chromium(II) which has been adsorbed on an inorganic oxide carrier with (b) an organometallic compound which is selected from the group consisting of lithium alkyls and lithium aryls, or a hydride of a metal of main groups I to III of the periodic table of elements, contact of the essential components being made in the presence of the alk-1-ene.
- 2. The process of claim 1, wherein the bis(cyclopentadienyl)-chromium(II) has cyclopentadienyl rings which carry substituent organic radicals selected from the group consisting of C1-C6-alkyl and C6-C15-aryl.
- 3. A process as claimed in claim 1, wherein the organometallic compound used is a hydrocarbyl-lithium compound having a radical selected from the group consisting of aliphatic radicals of 1 to 6 carbon atoms and aromatic radicals of 6 to 15 carbon atoms.
- 4. A process as claimed in claim 3, wherein the hydrocarbyl-lithium compound used is n-butyllithium.
- 5. The process of claim 1, wherein the alk-1-ene is ethylene or a mixture of ethylene with one or more C3-C10-alk-1-enes.
- 6. A process as claimed in claim 1, wherein the polymerization is carried out by the precipitation polymerization method.
Priority Claims (1)
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43 23 192 |
Jul 1993 |
DE |
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Parent Case Info
This application is a continuation of application Ser. No. 08/592,353, filed on Jan. 11, 1996 now abandoned, which is a 371 of PCT/EP94/02048 filed Jun. 23, 1994.
US Referenced Citations (8)
Foreign Referenced Citations (1)
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36 34 534 |
Apr 1988 |
DE |
Continuations (1)
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Parent |
08/592353 |
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Child |
08/935664 |
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US |