Methods for the preparation of crosslinked carboxyalkyl cellulose fibers having permanent and non-permanent crosslinks
US7604714B2 · kind B2 · utility
11Cited by
5References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 2, 2006 |
| Grant date | Oct 20, 2009 |
| Priority date | — |
| Expiry date | Sep 24, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2200/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods for making substantially water-insoluble, water-swellable, non-regenerated, carboxyalkyl cellulose fibers, wherein the fibers have a surface having the appearance of the surface of a cellulose fiber, and wherein the fibers include a plurality of non-permanent intra-fiber metal crosslinks and a plurality of permanent intra-fiber crosslinks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.