Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles
US5142059A · kind A · utility
8Cited by
6References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 7, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Sep 7, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles of the formula ##STR1## in which R.sub.1 is hydrogen or chlorine and one of R.sub.2 and R.sub.3 is chlorine or lower alkyl and the other is a radical of the formula ##STR2## in which R.sub.4 and R.sub.5 independently of one another are hydrogen or methyl and M is hydrogen, an alkali metal or ammonium. The compounds of the formula (1) are used as UV absorbers for polyamide fibres, wool and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.