Biodegradable dye leveler compounds for acrylic fibers
US5741338A · kind A · utility
1Cited by
4References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1997 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Mar 7, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/66
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Biodegradable quaternaries of amidoamines are disclosed for use as dye leveler compounds in the basic dyeing of acrylic and other fibers. The quaternary compounds of the invention have leveling activity equivalent to benzyl trimethyl ammonium chloride, but with much higher biodegradability, and generate low foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.