The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2017
Filed:
May. 23, 2012
Jun Shan, Helsinki, FI;
Mika Härkönen, Rajamäki, FI;
Jarmo Ropponen, VTT, FI;
Ali Harlin, VTT, FI;
Harri Heikkinen, VTT, FI;
Virpi Rämö, VTT, FI;
Thomas Gädda, VTT, FI;
Leena Nurmi, Rajamäki, FI;
Pia Willberg-keyriläinen, VTT, FI;
Jun Shan, Helsinki, FI;
Mika Härkönen, Rajamäki, FI;
Jarmo Ropponen, VTT, FI;
Ali Harlin, VTT, FI;
Harri Heikkinen, VTT, FI;
Virpi Rämö, VTT, FI;
Thomas Gädda, VTT, FI;
Leena Nurmi, Rajamäki, FI;
Pia Willberg-Keyriläinen, VTT, FI;
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY, Espoo, FI;
Abstract
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.