Dyed cellulosic moulded bodies
US6793689B2 · kind B2 · utility
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3References
20Claims
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Assignee
Inventor
Key dates
| Filing date | Feb 8, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Feb 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/92
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure relates to novel dyed cellulosic moulded bodies, in particular to fibers or films, containing a heavy-metal-containing colorant, which, according to the thermal stability test described herein, reduces the rise temperature of a cellulose solution in a tertiary amine oxide by 10° C. at most, in particular by 5° C. at most. The moulded bodies according to the disclosure may be produced in accordance with the amine-oxide process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.