Process for the bulk dyeing of polyesters
US3939113A · kind A · utility
3Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Jul 29, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B1/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process for the bulk dyeing of polyesters, characterised in that the dyestuffs used are anthraquinone derivatives of the formula ##SPC1## Wherein Q denotes one of the bridge members --O-- or --CO--, R denotes hydrogen or an alkyl group containing 1-4 carbon atoms, Ar denotes an aryl group, n denotes a number from 1 to 4, X, Y and Z denote an amino, hydroxyl, alkoxy, aryloxy, alkylmercapto, arylmercapto, arylamino or aroylamino group or halogen and a, b and c each denote zero or a number from 1 to 4, with the sum of n+a+b+c being a number from 1 to 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.