Process for making acid dye stain-resistant fibers
US7115224B2 · kind B2 · utility
3Cited by
3References
30Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 26, 2003 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Feb 21, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Acid dye stain-resistant fibers which are formed from a polyamide composition containing a mixture of a masterbatch concentrate, a fiber-forming polyamide and a polymer, the masterbatch concentrate including a carrier and a reagent having the formula:wherein Q and Z are moieties which associate with free acid dye sites in the polyamide, a is an integer from 0 to 2, b is an integer from 1 to 4, and R is an alphatic, aromatic or alicydic hydrocarbyl group. The carrier can be a terpolymer, a semi-crystallic thermoplastic polyester or plyamide having a melting point of about 235° C. or less, or mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.