Microfibrillated cellulose
US4374702A · kind A · utility
204Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1981 |
| Grant date | Feb 22, 1983 |
| Priority date | — |
| Expiry date | Oct 22, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H11/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Microfibrillated celluloses having properties distinguishable from all previously known celluloses, are produced by passing a liquid suspension of cellulose through a small diameter orifice in which the suspension is subjected to a pressure drop of at least 3000 psig and a high velocity shearing action followed by a high velocity decelerating impact, and repeating the passage of said suspension through the orifice until the cellulose suspension becomes a substantially stable suspension. The process converts the cellulose into microfibrillated cellulose without substantial chemical change of the cellulose starting material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.