Monodisperse hydrogel particles
US12043706B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Nov 21, 2019 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Aug 3, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2329/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.