Monodisperse hydrogel particles
AssigneeKuraray Co., Ltd.
InventorsAkio FUJITA, Atsushi INATOMI, Kenta TOSHINARI, Goro KOBAYASHI
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Abstract
The present invention relates to monodisperse hydrogel particles containing a cross-linked product of a vinyl alcohol-based polymer having an ethylenically unsaturated group and an average degree of polymerization of 450 or more, the monodisperse hydrogel particles having an average particle size of 10 to 5,000 μm, and a coefficient of variation of a particle size distribution of 10% or less.
Claims8
Monodisperse hydrogel particles comprising a cross-linked product of a vinyl alcohol-based polymer having an ethylenically unsaturated group and an average degree of polymerization of 450 or more, the monodisperse hydrogel particles having an average particle size of 10 to 5,000 μm, and a coefficient of variation of a particle size distribution of 10% or less.
A method of producing monodisperse hydrogel particles containing a cross-linked product of a vinyl alcohol-based polymer having an ethylenically unsaturated group and an average degree of polymerization of 450 or more, in which an average particle size is 10 to 5,000 μm, the method comprising:
- preparing an uncured gel solution containing the vinyl alcohol-based polymer;
- forming the uncured gel solution into particles by using a suspension polymerization method, a membrane emulsification method, a microfluid method, or a nozzle extrusion method;
- and
- cross-linking the vinyl alcohol-based polymer in the particles formed from the uncured gel solution.
Dependencies are inferred from the claim text.