Method for improving alkali resistance and oxidation resistance of benzothiazole disperse dye
US12187899B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 3, 2021 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jan 16, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/62
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosure relates to a method for improving the alkali resistance and oxidation resistance of a benzothiazole disperse dye, and belongs to the field of disperse dyes. In the disclosure, 4 kinds of diazo components and 8 kinds of coupling components are used in designing and synthesizing 28 thiazole heterocyclic azo disperse dyes, and the alkali resistance and oxidation resistance of the disperse dyes are improved. Structure confirmation is performed on the synthetic disperse dyes, and the alkali resistance, oxidation resistance and other dyeing properties of the disperse dyes are tested. According to the method for improving the alkali resistance and oxidation resistance of the benzothiazole disperse dye provided in the disclosure, a relationship between a dye structure and the alkali resistance and oxidation resistance is determined, the disperse dyes with excellent alkali resistance and oxidation resistance are obtained, and the dyeing performance is stable under a dyeing condition of 10 g/L of sodium hydroxide or 5 g/L of hydrogen peroxide. This kind of dyes can be applied to a one bath for bleaching and dyeing of polyester and cotton and a one bath for deweighting and dyei…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.