Preparation of polymers from cycloolefins
AssigneeThe B. F. Goodrich Company
InventorsRobert J. Minchak, Timothy J. Kettering, William J. Kroenke
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Abstract
Process for polymerizing by ring opening polymerization of a norbornene-type monomer, or a mixture thereof, with or without at least one other polymerizable monomer, in presence of an alkylaluminum halide cocatalyst and an organoammonium molybdate or tungstate catalyst that is soluble in a hydrocarbon reaction solvent and the norbornene-type monomer.
Claims10
Process for preparing a polymer by ring opening polymerization comprising polymerizing a norbornene-type monomer, or a mixture thereof, in presence of an effective amount of at least one organoammonium catalyst and at least one alkylaluminum halide cocatalyst, said norbornene-type monomer is characterized by the presence of the norbornene group defined as follows:
- ##STR3## and said organoammonium catalyst is selected from organoammonium molybdates and organoammonium tungstates that are soluble in said monomer or said monomer mixture.
Dependencies are inferred from the claim text.