Black trisazo dyes, their preparation and their use
US8361168B2 · kind B2 · utility
1Cited by
2References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Dec 22, 2031 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/30
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
1. Trisazo dyes of general formula (IV) and of general formula (V)wherein A, B, M, R1 to R18, m, n, o and p are as described in the specification, are excellent black dyes for dyeing and printing of paper, other cellulose containing materials and textiles materials and, in particular, for the preparation of recording liquids for ink jet printing and for writing utensils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.