Process for improving the photochemical stability of dyeings on polyester fibre materials
US4831068A · kind A · utility
79Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Feb 17, 1988 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Feb 17, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/6426
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process is described for improving the photochemical stability of dyeings on polyester fibre materials by means of UV absorbers of the formula ##STR1## in which R is lower alkyl, lower alkoxy, halogen or hydroxyl, R.sub.1 and R.sub.2 independently of one another alkyl which is substituted by hydroxyl, lower alkoxy, lower alkylthio, amino, monoalkylamino or dialkylamino, phenyl, phenyl which is substituted by chlorine, lower alkyl or lower alkoxy, or o-hydroxyphenyl, and n is 0, 1 or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.