Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Plural component system comprising a - group i to iv metal...
Patent
1990-10-18
1992-04-21
Garvin, Patrick P.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Plural component system comprising a - group i to iv metal...
502121, 502124, 502123, 502125, 502126, 502127, 502133, C08F 464
Patent
active
051068060
ABSTRACT:
Improved lower .alpha.-olefin polymerization catalysts are produced from an organoaluminum cocatalyst, a selectivity control agent and a specified magnesium-containing, titanium-containing, halide-containing procatalyst. The procatalyst is produced from an electron donor, tetravalent titanium halide and a complex alkoxide compound formed from magnesium alkoxide, titanium alkoxide and a phenolic compound. The catalyst is utilized produce poly-.alpha.-olefin in good yield, which polymer is characterized by a relatively low xylene solubles content and a relatively high bulk density.
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Garvin Patrick P.
Peebles Brent M.
Shell Oil Company
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