Anthraquinone compound
US4977261A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jan 11, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/505
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A compound of the following formula in the free acid form, ##STR1## wherein and R and R.sub.1 are each hydrogen or alkyl, A is a divalent group of the formula, ##STR2## wherein R.sub.3, R.sub.4 and R.sub.5 are each hydrogen, methyl, ethyl, methoxy or ethoxy, m is 0 or 1, n, u and v are each 0, 1 or 2, p is 0, 1, 2 or 3, q and s are each an integer of 2 to 6, and r is 1 or 2, B.sub.1 is phenylene or naphthylene, Z.sub.1 is vinyl, .beta.-sulfatoethyl or the like, l is 0, 1 or 2, and X is a group of the formula, ##STR3## wherein R.sub.2 is hydrogen or alkyl, B.sub.2 is phenylene or naphtylene, Z.sub.2 is vinyl, .beta.-sulfatoethyl or the like, R.sub.6 and R.sub.7 are each hydrogen, alkyl, phenyl, naphthyl or benzyl, and R, A and l are as defined above, which is useful for dyeing or printing fiber materials to give a dyed or printed product of a brilliant blue color superior in fastness properties such as light fastness and perspiration-light fastness, with superior build-up property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.