Process for coloring aromatic polyester-cellulose unions with a reactive dyestuff and a disperse dyestuff containing at least two carboxylic acid ester groups
US3993438A · kind A · utility
10Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1975 |
| Grant date | Nov 23, 1976 |
| Priority date | — |
| Expiry date | Apr 3, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/937
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved process for the continuous coloration of aromatic polyester/cellulose unions which comprises continuously applying to the said unions a reactive dyestuff and a disperse dyestuff containing at least two carboxylic acid ester groups, fixing the dyestuffs on the union, and thereafter subjecting the colored union to a treatment in an aqueous alkaline bath at a pH above 8.0 and at a temperature between 50.degree. and 85.degree. C, whereby the unions are padded or printed in a wide variety of shades possessing excellent fastness properties and there is little or no staining of any unprinted areas of the unions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.