Process for improving the dyeability of nylon carpet fiber
US4559196A · kind A · utility
14Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1984 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Apr 12, 2004 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02J13/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The dyeability of carpet yarns prepared from random copolymers of nylon 66 and 6-12 wt. % nylon 6 is improved by subjecting the yarn to saturated steam at temperatures close to the melting point of the copolymer. The copolymers used in the invention have an amine end content of 30-80 gram equivalents per 1000 kilograms of polymer and a relative viscosity of 55-85 in filament form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.