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Polymerization of Cyclic Monomers, 12

✍ Scribed by Norbert Moszner; Frank Zeuner; Urs Karl Fischer; Volker Rheinberger; Armin de Meijere; Viktor Bagutski

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
140 KB
Volume
291
Category
Article
ISSN
1438-7492

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✦ Synopsis

Abstract

Summary: The radical polymerization of different substituted methyl 2‐(bicyclo[3.1.0]hex‐1‐yl) acrylates, 1a–f, was initiated by 2,2′‐azoisobutyronitrile (AIBN) at 65 °C in chlorobenzene. The radical homopolymerization of 1a–f occurred through the opening of the cyclopropane ring, and lead to polymers with number‐average molecular weights of 13 000 to 434 400 g · mol^−1^ and glass transition temperatures between 77 and 121 °C. The monomers 1a–f showed a similar reactivity to MMA (in the copolymerization with MMA). Selected monomers were determined to be diluent monomers for dental filling composites and enable the preparation of composites that show a significantly reduced polymerization shrinkage, compared to composites based on dimethacrylate diluents.
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