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One-Component Catalysts for Thermal and Photoinduced Ring Opening Metathesis Polymerization

✍ Scribed by Dr. Andreas Hafner; Dr. Andreas Mühlebach; Dr. Paul A. van der Schaaf

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
508 KB
Volume
36
Category
Article
ISSN
0044-8249

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Several new in situ tungsten catalyst systems for ring-opening metathesis polymerizations (ROMP) by reaction injection molding (RIM) have been developed by adding BF 3 promoter to binary catalyst systems, by using metal hydride cocatalysts, and by altering the ligands on the procatalyst metal center

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## Abstract Ring‐opening metathesis polymerization (ROMP) of norbornene catalyzed by niobium(V) __N__,__N__‐dialkylcarbamates Nb(O~2~CNR~2~)~5~, __R__ = Et (**1**), Me (**2**) was studied in the presence of methylaluminoxane (MAO) as a cocatalyst. These novel catalytic systems resulted very active