Dyeing process
US3953162A · kind A · utility
3Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1974 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Mar 21, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/933
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dyeing nylon by applying sulphonated or unsulphonated dyestuffs containing cyclic anhydride groups, anhydride forming dicarboxylic acid groups or half-esters or half-amides thereof, as free acids or as salts with ammonia or volatile amines, and heating the fibre until dyestuff fixation takes place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.