Carboxymethylated cellulose
US11760811B2 · kind B2 · utility
0Cited by
6References
11Claims
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Key dates
| Filing date | Dec 5, 2018 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Dec 5, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A carboxymethylated cellulose having a carboxymethyl substitution of no more than 0.50 and a cellulose I type crystallization of at least 50%. Ideally, the anionization is 0.00-1.00 meq/g. The Schopper-Riegler freeness is ideally at least 60.0° SR. Ideally the ratio of filtration residue is 0%-30% by mass. The viscosity (30 rpm, 25° C.) for an aqueous dispersion having a 1% solid content (w/v) is ideally no more than 10.0 mPa·s.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.