Process for making fibrillated cellulose acetate staple fibers
US5779736A · kind A · utility
58Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1995 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Jan 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2933
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a process for producing a fibrillated cellulose acetate fiber comprising contacting cellulose acetate fiber with a strong base solution at conditions sufficient to remove greater than about 5% of bulk acetyl groups from said cellulose acetate fiber. Modified cellulose acetate staple fiber comprising an outer layer of regenerated cellulose in which at least about 5% of the acetyl groups are removed on an overall fiber basis are also disclosed. Paper products incorporating said fibers are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.