Shaped article made of porous hydrogel, manufacturing process therefor and use thereof
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United States of America Patent
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Jan 16, 2018
Grant Date -
Dec 4, 2014
app pub date -
Dec 26, 2012
filing date -
Dec 28, 2011
priority date (Note) -
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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.
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