Ring opening polymerization with organophosphonium and organoars

Details Ring opening polymerization with organophosphonium and organoars Ring opening polymerization with organophosphonium and organoars

1989-02-21

1990-05-08

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526114, 526119, 526169, 526137, 526144, 526281, 526282, 526283, 2643286, C08F 478

Patent

active

049239392

ABSTRACT:
This invention pertains to the use of organophosphonium and organoarsonium molybdates and tungstates as catalysts in a metathesis catalyst system in polymerization of cycloolefin monomers by ring opening polymerization. Polymerization can be by reaction injection molding in absence of a solvent whereby a thermoset polymer is produced or by solution polymerization in presence of a suitable solvent whereby a thermosetting or a thermoplastic polymer is produced. The cycloolefin monomers are polycycloolefins containing at least one norbornene group, and mixtures thereof.

REFERENCES:
patent: 4380617 (1983-04-01), Miachak et al.

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