Cellulosic materials capable of absorbing water of aqueous solutions, and their production
US4035147A · kind A · utility
46Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1974 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Apr 2, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H11/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Cellulosic materials having a high capacity for absorption of water or aqus solutions, a large volume:weight ratio and a high resilience are produced by an acid-catalyzed cross-linking reaction in a reaction medium of low water content from a cellulosic or lignocellulosic material in the form of individual, substantially dehydrated, non-swollen and inter-fibre-bonds free fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.