Process for producing solutions of salts of water-soluble carboxylic acids of cationic dyes or optical brighteners
US4245990A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1978 |
| Grant date | Jan 20, 1981 |
| Priority date | — |
| Expiry date | Dec 21, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/664
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for producing solutions of salts of water-soluble carboxylic acids of cationic dyes or optical brighteners, the solutions of cationic dye salts or brighteners salts which are obtained by this process and which are miscible with water in any proportion, and the use of these solutions for preparing dye liquors and printing pastes for dyeing, optical brightening and printing of, in particular, synthetic textile materials, which process comprises reacting the halide of a cationic dye or brighteners, in an aqueous or anhydrous medium, with at least one water-soluble carboxylic acid in the presence of an epoxide compound having a minimum of 13 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.