Method for preparing glycolide polyester by ring opening polymerization

Mika Härkönen (Inventor), Jarmo Ropponen (Inventor), Ali Harlin (Inventor), Harri Heikkinen (Inventor), Virpi Rämö (Inventor), Thomas Gädda (Inventor), Leena Nurmi (Inventor), Pia Willberg-Keyriläinen (Inventor), Jun Shan (Inventor)

Research output: PatentPatent


The present invention relates to a method for preparation a glycolide polyester by ring opening polymerization characterized in that glycolide monomer with optional co-monomer(s) of cyclic ester(s) is/are subjected to ring opening polymerization in the presence of a dispersion stabilizer and a catalyst, said catalyst being selected for precipitating glycolide homopolymer or copolymer from solvent, said solvent being selected so that the glycolide monomer and the optional co-monomer(s), the dispersion stabilizer and the catalyst are soluble therein but said glycolide homopolymer or copolymer is non-soluble. The present invention further relates to an in situ ring opening polymerizing process product, and to use of said glycolide polyester, and to further processing of said glycolide polyester.

Patent family as of 30.9.2021
DE602012027971 D1 20170309 DE201260027971T 20120523      
EP2714768 A1 20140409 EP20120728300 20120523      
EP2714768 B1 20170118 EP20120728300 20120523      
FI20115504 A0 20110523 FI20110005504 20110523      
US2014309366 AA 20141016 US20120123065 20120523      
US9657147 BB 20170523 US20120123065 20120523      
WO12160258 A1 20121129 WO2012FI50492 20120523

Link to current patent family on right 

Original languageEnglish
Patent numberEP2714768
IPCC08G 63/ 87 A I
Priority date23/05/12
Publication statusPublished - 9 Apr 2014
MoE publication typeH1 Granted patent


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