Sea-island typed conjugate multi filament comprising dope dyeing component and a process of preparing for the same
US6838172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Apr 26, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2931
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a dope dyed sea-island type conjugate multifilament. In the dope dyed sea-island type conjugate multifilament, which comprises easy soluble polymer as a sea component and polyester as an island component, the island component contains a dope dyed component selected from the group consisting of carbon black, pigments and dyestuffs and the temperature range (Tα-Tβ) showing more than 95% of the maximum thermal stress of yarns is from 120° C. to 210° C. The dope dyed sea-island type conjugate multifilament of the present invention has an excellent thermal shrinkage property and excellent wash fastness and light fastness, and the dyeing process thereof can be omitted after producing a woven or knitted fabric because a dope dyed component is contained in the island component (ultra fine yarn). The dope dyed sea-island type conjugate multifilament of the present invention is useful as yarns for warp knit fabrics used in production of women's apparel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.