Glykolihappopolymeerit ja menetelmä niiden valmistamiseksi; Glykolsyrapolymerer och förfarande för framställning därav

Translated title of the contribution: Glycolic acid polymers and method of producing the same

Thomas Gädda (Inventor), Minni Pirttimaa (Inventor), Ali Harlin (Inventor), Mika Härkönen (Inventor)

Research output: PatentPatent


Described herein is a feasible, significantly simplified production method that avoids challenging lactonization steps and converts a low molecular weight aliphatic polyester, consisting of hydroxy acids and a comonomer, whose molecular weight has been increased by step-growth polymerization reactions. The molecular weight of the aliphatic polyester, based on comparison of initial and final weight average molecular weights (Mw,1/Mw,2), increased significantly at a rate which permits the use of reactive extrusion to produce high molecular weight aliphatic polyesters in a simple, economically feasible manner.

Patent family as of 26.10.2021
BR112015028112A2 20170725 BR20151128112 20140506      
BR112015028112 B1 20210518 BR20151128112 20140506      
EP2994496 A1 20160316 EP20140794721 20140506      
EP2994496 A4 20161102 EP20140794721 20140506     
I128487 B 20200615 FI20130005467 20130506      
FI20135467 A 20141107 FI20130005467 20130506      
JP2016517909 T2 20160620 JP20160512400T 20140506      
JP6556698 B2 20190807 JP20160512400T 20140506      
KR102164478 B1 20201012 KR20157034756 20140506      
KR20160006202 A 20160118 KR20157034756 20140506      
US2016060387 AA 20160303 US20150934840 20151106      
US2020109310 AA 20200409 US20190707486 20191209      
WO14181040 A1 20141113 WO2014FI50334 20140506

Link to current patent family on right 

Translated title of the contributionGlycolic acid polymers and method of producing the same
Original languageMultiple
Patent numberFI20135467
IPCC08G 81/ 00 A I
Priority date6/05/13
Publication statusPublished - 7 Nov 2014
MoE publication typeH1 Granted patent


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