Environmentally non-persistant cellulose ester fibers
US5970988A · kind A · utility
37Cited by
9References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1995 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Sep 25, 2015 |
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 catalysts. The fibers are useful as filter 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.