Polyester fiber and fabric prepared therefrom
US6652964B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2915
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A polyester fiber is disclosed, comprising a polyester obtained by copolymerizing a third component with poly(trimethylene terephthalate) wherein the third component is an ester-forming sulfonate compound in a copolymerizing ratio of from 0.5 to 5 mol %, the fiber has a peak temperature of loss tangent of from 85 to 115° C., and the relationship between modulus Q (g/d) and elastic recovery R (%) of the fiber satisfies the following formula (1): 0.18≦Q/R≦0.45. This fiber can be dyed into a dark shade under atmospheric pressure and enables fast dyeing of a fabric using the fiber in composite with a stretch fiber represented by polyurethane elastic fiber or a fiber material having low heat resistance such as wool silk and acetate fiber. The composite fabric can be dyed under atmospheric pressure, therefore, the physical properties of fiber having low heat resistance used in combination is not impaired during the dyeing process.The polyester fiber of the present invention can be treated for caustic reduction, therefore, a fiber having highly soft and dry touch and dyeability into brilliant color can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.