Pyridinium metathesis catalysts for cycloolefin polymerization

Details Pyridinium metathesis catalysts for cycloolefin polymerization Pyridinium metathesis catalysts for cycloolefin polymerization

1989-12-26

1991-11-19

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526114, 526116, 526127, 526128, 526132, 526161, 526282, 526283, 2643286, 26433117, C08F 478

Patent

active

050667408

ABSTRACT:
This invention pertains to the use of pyridinium isopoly and heteropoly molybdates and tungstates as catalysts in a metathesis catalyst system in polymerization of norbornene-type 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 monomers are selected from polycycloolefins containing at least on enorbornene group and mixtures thereof.

REFERENCES:
patent: 4380617 (1983-04-01), Minchak et al.
patent: 4426502 (1984-01-01), Minchak
patent: 4923936 (1990-05-01), Goodall et al.
patent: 4923939 (1990-05-01), Goodall

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