Disperse dye stable to dyeing, and its use for dyeing and printing synthetic and semi-synthetic fibre materials
US4329144A · kind A · utility
9Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1980 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Dec 15, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0015
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
By suspension of the melt of the known crystallographically amorphous dye of the formula ##STR1## which is unstable to dyeing, in water at a temperature of 90.degree. to 130.degree. C., this dye can be caused to crystallize. There is obtained a crystalline granulate in which the dye is completely in the novel .epsilon.-modification. The novel dye modification is stable in dispersion under dyeing conditions, and has no tendency to flocculate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.