Yarn by extruding polyamide fibers and sulfonated polyester concentrate
US6589466B2 · kind B2 · utility
3Cited by
3References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Dec 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fiber-forming polyamide composition contains a fiber forming polyamide and a sulfonated polyester concentrate, the concentrate disabling and dye sites in the polyamide so that fibers formed from the composition will have enhanced stain and soil resistance. The sulfonated polyester concentrate contains a reagent, preferably an alkali metal salt of 5-sulfoisophthalic acid, and thermoplastic polyester, preferably one or more of PET, PTT, PBT, PETG and poly(ethylene terephthalate-co-isophthalate).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.