公开(公告)号：US11850306B2

公开(公告)日：2023-12-26

申请号：US16468979

申请日：2017-12-15

Applicant: UPM-KYMMENE CORPORATION

Inventor： Vili-Veli Auvinen ,  Heli Paukkonen ,  Marjo Yliperttula ,  Arto Urtti ,  Tiina Hakkarainen ,  Patrick Laurén ,  Mikko Kunnari ,  Timo Laaksonen ,  Mingwei Li ,  Kari Luukko

IPC: A61K9/19 ,  A61K47/38 ,  A61K47/10 ,  A61K47/26 ,  A61K9/06 ,  A01N1/02 ,  C12N5/00 ,  C12N5/09 ,  F26B5/06

CPC classification number: A61K9/19 ,  A01N1/0221 ,  A01N1/0231 ,  A61K9/06 ,  A61K47/10 ,  A61K47/26 ,  A61K47/38 ,  C12N5/0062 ,  C12N5/0693 ,  F26B5/06 ,  C12N2513/00 ,  C12N2533/78

Abstract: The present disclosure relates to method for drying hydrogel comprising nanofibrillar cellulose, the method comprising providing a hydrogel comprising nanofibrillar cellulose, providing polyethylene glycol, providing trehalose, mixing the hydrogel, the polyethylene glycol and the trehalose to obtain a mixture, and freeze drying the mixture to obtain a dried hydrogel comprising nanofibrillar cellulose. The present disclosure relates to a freeze-dryable hydrogel comprising nanofibrillar cellulose, to a freeze-dried hydrogel comprising nanofibrillar cellulose, and to a medical hydrogel comprising nanofibrillar cellulose and one or more therapeutic agent(s).