公开(公告)号：US09868840B2

公开(公告)日：2018-01-16

申请号：US14369794

申请日：2012-12-26

Applicant: KURARAY CO., LTD.

Inventor： Tatsuya Oka ,  Arata Ishiodori ,  Mototsugu Yoshihara

IPC: C08J5/00 ,  C08J9/28 ,  C02F3/10 ,  C08K3/20 ,  C08J3/075

CPC classification number: C08J9/28 ,  C02F3/104 ,  C02F3/108 ,  C02F3/109 ,  C08J3/075 ,  C08J2201/026 ,  C08J2201/0504 ,  C08J2205/022 ,  C08J2205/044 ,  C08J2329/04 ,  C08J2405/04 ,  C08K3/20 ,  Y02W10/15 ,  Y10T428/2982

Abstract: There is provided a shaped article made of porous hydrogel that contains a polyvinyl alcohol acetalized with a dialdehyde, wherein the shaped article after freeze-drying has a pore size of 0.1 to 50 μm. Preferably, the shaped article made of porous hydrogel further contains a water-soluble polysaccharide. Also preferably, an acetalization degree of the polyvinyl alcohol is 1 to 50 mol %. Also preferably, the shaped article made of porous hydrogel is in the form of particles with a sphere-equivalent diameter of 1 to 20 mm. Such a shaped article made of porous hydrogel exhibits high strength and good survivability of microorganisms.

公开(公告)号：US20140353248A1

公开(公告)日：2014-12-04

申请号：US14369794

申请日：2012-12-26

Applicant: KURARAY CO., LTD.

Inventor： Tatsuya Oka ,  Arata Ishiodori ,  Mototsugu Yoshihara

IPC: C08J9/28 ,  C08K3/20 ,  C02F3/10

CPC classification number: C08J9/28 ,  C02F3/104 ,  C02F3/108 ,  C02F3/109 ,  C08J3/075 ,  C08J2201/026 ,  C08J2201/0504 ,  C08J2205/022 ,  C08J2205/044 ,  C08J2329/04 ,  C08J2405/04 ,  C08K3/20 ,  Y02W10/15 ,  Y10T428/2982

Abstract: There is provided a shaped article made of porous hydrogel that contains a polyvinyl alcohol acetalized with a dialdehyde, wherein the shaped article after freeze-drying has a pore size of 0.1 to 50 μm. Preferably, the shaped article made of porous hydrogel further contains a water-soluble polysaccharide. Also preferably, an acetalization degree of the polyvinyl alcohol is 1 to 50 mol %. Also preferably, the shaped article made of porous hydrogel is in the form of particles with a sphere-equivalent diameter of 1 to 20 mm. Such a shaped article made of porous hydrogel exhibits high strength and good survivability of microorganisms.

Abstract translation: 提供了一种由多孔水凝胶制成的成型制品，其包含用二醛缩醛化的聚乙烯醇，其中冷冻干燥后的成形制品的孔径为0.1-50μm。 优选地，由多孔水凝胶制成的成型制品还含有水溶性多糖。 另外，聚乙烯醇的缩醛化度优选为1〜50摩尔％。 还优选地，由多孔水凝胶制成的成型制品为球当量直径为1至20mm的颗粒形式。 这种由多孔水凝胶制成的成形制品表现出高强度和微生物的良好生存性。