Sulfonated 2-(2'-hydroxyaryl)-2H-benzotriazoles and/or sulfonated aromatic formaldehyde condensates
US4990623A · kind A · utility
4Cited by
7References
5Claims
0Family size
Inventors
Key dates
| Filing date | Jul 24, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jul 24, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A new class of sulfonated 2-(2'-hydroxyaryl)-2H-benzotriazole compounds and method for using them and other sulfonated hydroxyaryl benzotriazoles on nylon fibers to improve stain resistance and dye lightfastness has been discovered. A process is provided for improving stain resistance of nylon fibers by treatment with sulfonated aromatic-formaldehyde condensate and fluorinated dry soil resist agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.