Method for fibrillation of cellulose and fibril cellulose product
US9909256B2 · kind B2 · utility
1Cited by
5References
15Claims
0Family size
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Key dates
| Filing date | Feb 13, 2013 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jun 3, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H11/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for fibrillation of cellulose includes the following steps: introducing fiber pulp of anionic cellulose at a consistency of 1 to 4% into a homogenizer, and homogenizing fiber pulp in the homogenizer at a pressure of 200 to 1000 bar, advantageously 300 to 650 bar, and by using 2 to 4 passes through for the same fiber pulp under these conditions, and after passes through, taking pulp from the homogenizer, which pulp has been fibrillated by homogenization to a degree than can be expressed as Brookfield viscosity exceeding 10,000 mPa·s (consistency 0.8%, 10 rpm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.