Aqueous liquid composition of vinylsulfone type reactive dyes in lithium salt form and buffer
US4832698A · kind A · utility
9Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Apr 8, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/937
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous liquid dye composition comprising a dye represented by the following formula in a free acid form, ##STR1## wherein Y is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 X in which X is a group splittable by the action of an alkali, and a pH buffer, the dye being in the form of a lithium salt, and the liquid dye composition having a pH value of from 3 through 7 and a dye content of from 5 through 50% by weight based on the weight of the liquid dye composition, which can be stored stably for a long period of time even at a low temperature such as 0.degree. C. or lower, and a high temperature such as 40.degree. C. or higher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.