Back to results
US 11,478,781 B2Granted
Ziegler-Natta catalysts prepared from solid alkoxymagnesium halide supports
AssigneeChevron Phillips Chemical Company LP
InventorsJeffrey F. Greco, Jim B. Askew
Life of this patent
Estimating the term…
Abstract
Catalyst systems containing a titanium alkoxymagnesium halide supported catalyst component can be used for the polymerization of olefins. The catalyst can be prepared from a microcrystalline solid alkoxymagnesium halide support having a lattice spacing in the 5 nm to 15 nm range.
Claims29
A process to produce a titanium alkoxymagnesium halide supported catalyst, the process comprising:
- (i) contacting a dialkylmagnesium compound having the formula MgR2 with an alcohol compound having the formula R1OH to form an alkylmagnesium alkoxide compound having the formula Mg(OR1)R;
- (ii) contacting the alkylmagnesium alkoxide compound having the formula Mg(OR1)R with a halide compound having the formula SiX4 to form a mixture containing a microcrystalline solid alkoxymagnesium halide support having the formula Mg(OR1)nX2-n;
- wherein:
- each R independently is a linear or branched alkyl group;
- R1 is a linear or branched C5-C18 alkyl group;
- each X independently is a halogen;
- n is a number from 0.5 to 1.5;
- and
- (iii) contacting the microcrystalline solid alkoxymagnesium halide support with a titanium compound to form the titanium alkoxymagnesium halide supported catalyst;
- wherein the titanium alkoxymagnesium halide supported catalyst is characterized by a lattice spacing in a range from about 5 nm to about 15 nm.
7 more elements
A catalyst composition comprising a co-catalyst and a titanium alkoxymagnesium halide supported catalyst comprising:
- titanium;
- and
- a microcrystalline solid alkoxymagnesium halide support having the formula Mg(OR1)nX2-n;
- wherein:
- R1 is a linear or branched C5-C18 alkyl group;
- each X independently is a halogen;
- n is a number from 0.5 to 1.5;
- and
- the catalyst is characterized by a lattice spacing in a range from about 5 nm to about 15 nm.
6 more elements
A microcrystalline solid alkoxymagnesium halide support having the formula Mg(OR1)nX2-n;
- wherein:
- le is a linear or branched C5-C18 alkyl group;
- each X independently is a halogen;
- n is a number from 0.5 to 1.5;
- and
- the microcrystalline solid alkoxymagnesium halide support is characterized by a lattice spacing in a range from about 5 nm to about 15 nm.
3 more elements
Dependencies are inferred from the claim text.