Melt extrusion spinning polyamide fibers with sulfonated reagent and thermoplastic carrier
US6680018B2 · kind B2 · utility
3Cited by
35References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Jul 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23993
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of producing a stain-resistant and soil-resistant polyamide yarn comprises the steps of(a) melt compounding a sulfonated aromatic acid with a thermoplastic polyester or polyamide carrier resin to form a concentrate;(b) adding said concentrate to a fiber-forming polyamide to form a fiber-forming polyamide composition;(c) melt extrusion spinning said fiber-forming polyamide composition to form a yarn; and(d) drawing said yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.