Tertiary amines, substituted piperidine, morpholine or piperazine containing fatty acid moieties to prevent ozone fading of nylon fibers
US3989455A · kind A · utility
2Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1974 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | Nov 4, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of treating polycarbonamide fiber, such as nylon 6 yarn for carpets, has been discovered to increase dye fastness when the dyed fiber is exposed to ozone. The method is coating the fibers with a tertiary amine, or a substituted piperidine, morpholine, or piperazine compound. The compound must contain at least one moiety of straight or branched chain alkyl, alkenyl or aralkyl containing 6 to 24 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.