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Polymerization of vinyl aromatic monomers using cyclopentadienyl zirconium catalysts

Patent ·
OSTI ID:6228066
;

A process is described for the preparation of polymers of vinyl aromatic monomers having a high degree of syndiotacticity comprising contacting one or more vinyl aromatic monomers under polymerization conditions with a catalyst comprising the reaction product of polymethylaluminoxane and a cyclopentadienyl zirconium (IV) complex.

Assignee:
Dow Chemical Co., Midland, MI
Patent Number(s):
US 4808680
OSTI ID:
6228066
Country of Publication:
United States
Language:
English

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Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKENES
ALKYL RADICALS
ALUMINIUM COMPOUNDS
AROMATICS
ARYL RADICALS
CATALYSTS
CHALCOGENIDES
CHEMICAL BONDS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COMPLEXES
CYCLOALKENES
CYCLOPENTADIENE
DIENES
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
LIGANDS
METHYL RADICALS
MONOMERS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXIDES
OXYGEN COMPOUNDS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PNICTIDES
POLYENES
POLYMERIZATION
POLYMERS
POLYVINYLS
RADICALS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
VINYL MONOMERS
ZIRCONIUM COMPLEXES