Carboxymethylated cellulose nanofibers
US12123109B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Dec 5, 2018 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Jan 19, 2039 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2201/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Carboxymethylated cellulose nanofibers in which the degree of carboxymethyl substitution is higher than 0.30 and no more than 0.60, the cellulose type I crystallinity is 60% or higher, and the transmittance of light having a wavelength of 660 nm when the carboxymethylated celluose nanofibers are made into an aqueous dispersion having a solids fraction of 1% (w/v) is 60% or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.