Polymeric anthraquinone derived colorants
US4137243A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 14, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Jul 14, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/42
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polymeric anthraquinone derived colorants having improved light and alkali fastness properties represented by the formula: ##STR1## wherein R.sub.1 is a member selected from the group consisting of H, OH, a halogen, NH.sub.2, NO.sub.2 and ##STR2## R.sub.2 and R.sub.3 are members selected from the group consisting of H and OH, R.sub.4 is an alkyl moiety containing at least 1 carbon atom, said polymeric constituent is a member of the group consisting of polyalkylene oxides and copolymers thereof in which the alkylene moiety contains from 2 to about 4 carbon atoms, polyalkylene polyamines in which the alkylene moiety contains from 2 to about 4 carbon atoms, polysaccarides, polyamides, and copolymers of vinyl amine and acrylamide, x is an integer of at least 1, and R.sub.5 is selected from the group consisting of OR.sub.6 or NHR.sub.7 and wherein R.sub.6 is H, an aryl moiety or an alkyl moiety containing from 1 to about 18 carbon atoms and wherein R.sub.7 is an aryl moiety or R.sub.4 - (polymeric constituent-(NH.sub.2).sub.x wherein R.sub.4, polymeric constituent and x are as previously defined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.