High-molecular weight diepoxide-dicarboxylic acid addition polymers |
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| Authors: | J E Klee F Claußen H -H Hörhold |
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| Affiliation: | (1) Dentsply De Trey, De-Trey-Str. 1, D-78467 Konstanz, Germany;(2) Thüringisches Institut für Textil- und Kunststoff-Forschung, Breitscheidstr. 97, D-07407 Rudolstadt, Germany;(3) Institut für Organische Chemie und Makromolekulare Chemie, Humboldtstr. 10, D-07743 Jena, Germany |
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| Abstract: | Summary The addition polymerization of 2,2-bis4-(2,3-epoxypropoxy)phenyl] propane (DGEBA) and dicarboxylic acid results in high molecular weight addition polymers (Mn 8000–13000). Their molecular weight distribution is rather broad (Mw/Mn=11,6) due to side reactions such as transesterification and formation of ether linkages. Due to the incorporation of the aliphatic dicarboxylic acid moieties in the polymer backbone, the addition polymers show relatively low glass transition temperatures ranging from 26 to 45 °C. |
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