Rubber article containing a reinforcing yarn of cellulose
US6014997A · kind A · utility
2Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1998 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Jul 22, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31841
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Cellulose extrudates can be made from an optically anisotropic solution containing 94-100 wt % of: cellulose; phosphoric acid and/or its anhydrides; and water by extruding the solution, coagulating the formed extrudates, and then aftertreating those extrudates so that they have a degree of acidity which at least equals 7. Fibers obtained by such a processs possess particularly good thermal stability and are suitable for use as a reinforcing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.