Method for dyeing fibrous materials
US5092904A · kind A · utility
6Cited by
15References
56Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 18, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | May 18, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S57/904
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for dyeing fibrous material is provided. The method includes contacting a fibrous material with a mixture of a carrier and a dye soluble or dispersed in the carrier. The improvement comprises the use, as the carrier, of a mixture comprising N-cyclohexyl-2-pyrrolidone and an alkyl or aryl benzoate. The carrier system of the present can be utilized advantageously to dye difficult to dye fibrous material such as aromatic polyamides including Kevlar.RTM. fibers and blends thereof with other fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.