Coloration of polyesters
US4001169A · kind A · utility
4Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1974 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Feb 26, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for mass coloring synthetic linear polyesters which comprises incorporating into the preformed polyester one or more dyestuffs of the formulae:- ##STR1## wherein R is a group of the formula ##STR2## and X is a lower alkoxy, substituted lower alkoxy, lower alkylamino or acylamino radical which is free from hydroxy or carboxylic acid groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.