Reactive dyes, processes for their preparation and their use
US6392021B1 · kind B1 · utility
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5References
7Claims
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Key dates
| Filing date | Sep 24, 2001 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Sep 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reactive dyes of formula (1) whereinb is the number 1 or 2,A is the radical of formula (2) or (3) D1, D2, R1, R2, X1, Y, l, m and n are as defined in the specification, are especially suitable for dyeing cotton and wool and yield dyeings having good all round properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.