Title:
POLYAMIDE DYEING PROCESS UTILIZING CONTROLLED DYE ADDITION
Document Type and Number:
WIPO Patent Application WO1992008838
Kind Code:
A3
Abstract:
A process for the dyeing of a fibrous article containing fibers of a polyamide polymer with at least one anionic dye. The process includes immersing the article in a liquid dyeing bath of a substantially nonaqueous solvent medium and heating to a temperature at least equal to the dyeing transition temperature of the fiber. The anionic dye is added to the dyeing bath so that the rate of dye addition is the primary control over the rate of dye uptake by the article.
Inventors:
HOLFELD WINFRIED THOMAS (US)
MANCUSO DALE EMMETT (US)
MANCUSO DALE EMMETT (US)
Application Number:
PCT/US1991/008149
Publication Date:
November 12, 1992
Filing Date:
November 08, 1991
Export Citation:
Assignee:
DU PONT (US)
International Classes:
D06P1/00; D06P1/39; D06P3/24; (IPC1-7): D06P1/00; D06P3/24
Foreign References:
| FR2552789A1 | 1985-04-05 | |||
| FR2320381A1 | 1977-03-04 |
Other References:
Chemical Abstracts, volume 113, 1990, (Columbus, Ohio, US) A.L.N. Rao et al.: "Ring dyeing on polyester", see page 81, abstract 42374g, & Colourage 1990, 37(2), 13-17
Journal of the Society of Dyers and Colourists, volume 89, no. 12, December 1973, (Bradford, GB) P.G.H. Bakker et al.: "Development of techniques for studying dye penetration in rapid carpet coloration processes", pages 486-492, see the whole article
Journal of the Society of Dyers and Colourists, volume 89, no. 12, December 1973, (Bradford, GB) P.G.H. Bakker et al.: "Development of techniques for studying dye penetration in rapid carpet coloration processes", pages 486-492, see the whole article
Download PDF: