Polymerization catalyst

Patent · Tue May 12 04:00:00 EDT 1987

OSTI ID:6420792

Graves, V

A process is described for polymerizing at least one alpha olefin under conditions characteristic of Ziegler polymerization wherein the polymerization is conducted in the presence of a catalyst system which comprises: a supported catalyst prepared under anhydrous conditions by the sequential steps of: preparing a slurry of inert particulate support material; adding to the slurry a solution of an organomagnesium compound; adding to the slurry and reacting a solution of a zirconium halide compound, hafnium compound or mixtures thereof; adding to the slurry and reacting a halogenator; adding to the slurry and reacting a tetravalent titanium halide compound; and recovering solid catalyst.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4665262
• OSTI ID: 6420792
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALKENES
ALUMINIUM COMPOUNDS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CHLORINATION
DISPERSIONS
HAFNIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HALOGENATION
HYDROCARBONS
MAGNESIUM COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
POLYMERIZATION
REFRACTORY METAL COMPOUNDS
SLURRIES
SUSPENSIONS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS