Process for producing low molecular-weight poly-1-olefins

Details Process for producing low molecular-weight poly-1-olefins Process for producing low molecular-weight poly-1-olefins

1997-05-28

1999-06-29

Smith, Edward J.

Chemistry of hydrocarbon compounds

Product blend, e.g., composition, etc., or blending process...

Component of indefinite molecular weight greater than 150

5261247, 526352, 526905, 585512, 585523, 585524, C10L 116, C07C 224, C08F 4654

Patent

active

059171006

ABSTRACT:
A catalyst formed by the reaction of a magnesium alkoxide dispersion having a particle size of from 100 to 3000 nm with a compound of a metal selected from the group comprising titanium, zirconium, vanadium and chromium and then with a chlorine-containing organoaluminum compound possesses a very good hydrogen responsiveness and a high activity even in the presence of molecular-weight regulators such as hydrogen. The catalyst is therefore outstandingly suitable for the production of low molecular-weight polyolefins. The catalyst makes possible the production of waxes having a reduced residual ash content. The large particle diameter and the low fines content of the polymer powder produced by suspension polymerization with this catalyst enables easy removal of the suspension medium and drying. The catalyst is furthermore advantageously used in solution polymerization and, because of the large particle diameter, in gas phase polymerization for producing low molecular-weight poly-1-olefins.

REFERENCES:
patent: 3833515 (1974-09-01), Amtmann et al.
patent: 3933934 (1976-01-01), Bailly et al.
patent: 5292837 (1994-03-01), Heinrich et al.
*Included as English Equivalent of German 4,017,661.

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