Trichromatic combination of dyes for nylon
US4840643A · kind A · utility
7Cited by
5References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1988 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Mar 16, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/929
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A trichromatic dye combination especially suited for the continuous dyeing of synthetic polyamide materials; the system including an acid red dye component, an acid blue dye component and an acid yellow dye component, each of said dye components being selected on the basis of minimum and compatible cold strike and compatible on tone strike rates. The trichromatic combination according to the invention dyes synthetic polyamide fibers from aqueous liquors, producing level dyeings having excellent fastness properties including good lightfastness and good ozone fastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.