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Polyolefins with high glass transition temperatures

✍ Scribed by Olaf Henschke; Frank Köller; Manfred Arnold

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
318 KB
Volume
18
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

The copolymerization of propene and norbornene with the isospecific metallocene catalyst dimethylsilylenebis(η^5^‐inden‐1‐yl)zirconium dichloride/methylaluminoxane ((CH~3~)~2~Si[Ind]~2~ZrCl~2~/MAO) was investigated. Because of the surprisingly high reactivity of the cyclic olefin copolymers with a norbornene content of 11 mol‐% up to 98 mol‐% were synthesized. The resulting copolymers are amorphous. The glass transition temperatures studied by differential scanning calorimetry measurements increase with rising norbornene content in the copolymer. High glass transition temperatures of T~g~ > 240°C were found for the copolymers with the highest content of norbornene.

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