Vanadium catalyst systems for olefin polymerization

Patent · Tue Feb 18 04:00:00 EST 1992

OSTI ID:5355586

Chien, J C.W.

This patent describes a catalyst system for the isotactic polymerization of alpha-olefins. It comprises: a solid precursor comprising the reaction product of a halogenated vanadium compound wherein the vanadium has a valence of 2 to 5; a magnesium compound; and an inside electron donor wherein the molar ratio of inside electron donor to vanadium compound is in the range of about 0.2:1 to about 2:1; the atomic ratio of magnesium to vanadium is in the range of about 3:1 to about 40:1; and the reaction product is a solid having a surface area greater than about 10 square meters per gram or is adsorbed on the surface of an inert inorganic support having a surface area grater than about 10 square meters per gram; a hydrocarbyl aluminum cocatalyst wherein the atomic ratio of aluminum to vanadium is in the range of about 2:1 to about 300:1; and an outside electron donor wherein the molar ratio of outside electron donor to aluminum is in the range of about 0.2:1 to about 1:1.

• Assignee: Academy of Applied Science, Inc., Concord, NH (United States)
• Patent Number(s): US 5089460; A
• Application Number: PPN: US 7-665911
• OSTI ID: 5355586
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKENES
CATALYSTS
CATALYTIC CRACKING
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
HYDROCARBONS
INDUSTRIAL PLANTS
KINETICS
METALS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PETROLEUM REFINERIES
POLYMERIZATION
PYROLYSIS
REACTION KINETICS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
VANADIUM