Development of hydrogenated ring-opening metathesis polymers

✍ Scribed by Toshihiro Otsuki; Kohei Goto; Zen Komiya

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 166 KB
• Volume: 38
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/1099-0518(200012)38:1+<4661::aid-pola50>3.0.co;2-k

✦ Synopsis

New hydrogenatedring-openingmetathesispolymerswith excellent thermal and optical propertieswere developed. These polymers were prepared by the ring-openingmetathesispolymerizationof ester-substituted tetracyclododecenemonomers followed by the hydrogenationof the main-chain double bond. The degree of hydrogenationwasan importantfactorfor thethermalstabilityof thepolymers,andas complete hydrogenationaspossiblewasnecessaryto obtaina thermallystablepolymer. The completelyhydrogenatedring-openingpolymerderivedfrom 8-methyl-8-methoxycarbonyl-substituted monomer has a glass-transition temperatureof 171 °C and a 5% weight-losstemperatureof 446 °C. This polymer has excellent thermaland optical propertiesbecause of its bulky and unsymmetricalpolycyclic structurein the main chain and is an alternativeto glassor othertransparent polymerssuch as poly(methyl methacrylate)and polycarbonate resin. This polymer has also been used in a wide varietyof applications,such as optical lenses, optical disks,optical films, and optical fiber.