Novel compositions based on indanthrone blue pigments
US4692189A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1986 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Jul 21, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0034
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition comprising PA0 (a) an indanthrone blue pigment of formula I ##STR1## and (b) a sulfonated indanthrone blue derivative of formula II ##STR2## wherein X.sup..sym. is H.sup..sym. or a group of the formula M.sup.n.sym. /n or N.sup..sym. (R)(R.sub.1)(R.sub.2)(R.sub.3), M is a monovalent, divalent or trivalent metal cation, n is 1, 2 or 3, each of R, R.sub.1, R.sub.2 and R.sub.3 is independently hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.6 cycloalkyl, phenyl or phenyl which is substituted by C.sub.1 -C.sub.18 alkyl, or R.sub.2 and R.sub.3, together with the linking nitrogen atom, are a pyrrolidine, imidazoline, piperidine, piperazine or morpholine radical, or R.sub.1, R.sub.2 and R.sub.3, together with the linking nitrogen atom, are a pyrrole, pyridine, picoline, pyrazine, quinoline or isoquinoline radical, and m is a value from 0.2 to 3. When used in varnishes, pigment mixtures of this kind are distinguished in particular by increased color strength, improved rheology and high gloss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.