Microfibrillated cellulose with enhanced properties and methods of making the same
US11242651B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2018 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Apr 20, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J19/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods of re-dispersing and de-agglomerating dewatered, partially dried and dried compositions of microfibrillated cellulose and compositions of microfibrillated cellulose and inorganic particulate material, into liquid compositions comprising same, by applying ultrasonic energy to such liquid compositions of dewatered, partially dried and dried compositions of microfibrillated cellulose, or compositions of microfibrillated cellulose and inorganic particulate material. Methods for preparing an aqueous suspension comprising microfibrillated cellulose and, optionally, inorganic particulate material, with enhanced viscosity and tensile strength properties, suitable for use in methods of making paper or coating paper, and to filled and coated papers made from such aqueous suspensions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.