Environmentally non-persistant cellulose ester fibers
US6133439A · kind A · utility
24Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 1999 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | May 14, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01F2/28
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
This invention provides cellulose ester fibers having an intermediate degree of substitution per anhydroglucose unit (DS/AGU) along with pigments which act as photooxidation catalyst. The fibers are useful as filler materials for tobacco products. The filter materials thus provided are easily dispersible and biodegradable and do not persist in the environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.