Process for improving characteristics of a polyamide
US6258928A · kind A · utility
10Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2000 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Apr 6, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/248
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for improving characteristics such as, whiteness retention, degradation, and dyeability of a polyamide by contacting the polyamide with thiocyanate. A polyamide produced by the process has improved dyed color depth, dyed color uniformity, hue, elimination of light dyeing ends, protection of dye sites from degradation, protection from UV degradation, reduced yellowing or oxidation, and/or resistance to loss of dyeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.