Résumé
A polymerization process to derive a thermal-stabilized poly(1,4-dioxan-2-one) and cyclic ester monomer copolymer using a coordination-insertion catalyst/initiator. 1,4-dioxan-2-one and cyclic ester monomer, each containing less than 100-ppm water and having an acid value less than 0.5 mg KOH/g, and preferably less than 0.2 mg KOH/g, are copolymerized. Preferably the cyclic ester monomer is e-caprolactone and the reaction is in an extruder.
langue originale | Anglais |
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Numéro de brevet | CN101035831 |
CIB | C08G 63/ 87 A I |
Date de priorité | 9/08/04 |
Etat de la publication | Publié - 12 sept. 2007 |