Ethylsulfonate-alkylamine copolymers as colorant backbones
US4178422A · kind A · utility
2Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1978 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Apr 19, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S534/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylsulfonate-alkylamine copolymers are disclosed. These copolymers find special application as intermediates in the preparation of new water-soluble polymeric colorants which are also disclosed, especially water-soluble polymeric colorants for edibles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.