Magnesium halide hydrates and polymerization catalysts prepared therefrom
The patent describes a process for the polymerization of an alpha olefin. It comprises contacting the alpha olefin under polymerization conditions with a catalyst prepared by reacting a hydrous magnesium dihalide composition with reactants comprising a benzoic acid ester and an alkoxytitanium compound to form a first catalyst component, then reacting the first catalyst component with an organoaluminum halide to form a solid product, then reacting the sold product with a halogenating agent comprising a titanium halide, wherein the molar ratio of water to magnesium dihalide in the hydrous magnesium dihalide composition is in the range of about 0.5/1 to 2/1 and the hydrous magnesium dihalide composition is prepared by comminuting a mixture of an anhydrous magnesium dihalide and a hydrous magnesium dihalide at least until the amount of the most highly hydrated magnesium dihalide species in the comminuted product has become substantially stabilized.
- Assignee:
- Phillips Petroleum Co., Bartlesville, OK
- Patent Number(s):
- US 4853444
- Application Number:
- PPN: US 6-700587A
- OSTI ID:
- 5426491
- Resource Relation:
- Patent File Date: 11 Feb 1985
- Country of Publication:
- United States
- Language:
- English
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Polyolefin polymerization catalyst and method of production use
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Related Subjects
ALKENES
POLYMERIZATION
CATALYSTS
CHEMICAL PREPARATION
CHEMICAL COMPOSITION
HALIDES
HYDRATES
MAGNESIUM COMPOUNDS
TITANIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CHEMICAL REACTIONS
HALOGEN COMPOUNDS
HYDROCARBONS
ORGANIC COMPOUNDS
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
020400* - Petroleum- Processing