Pigment compositions
US5556456A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1994 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Dec 27, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B19/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pigment composition which comprises an organic pigment and a dioxazine pigment derivative represented by the following formula (I); ##STR1## wherein R.sub.1 and R.sub.2 each independently represents a substituted or unsubstituted and saturated or unsaturated aliphatic hydrocarbon group or aromatic hydrocarbon group, or R.sub.1 and R.sub.2 form a heterocyclic ring; L is an integer of 1-6; m is 0.5-3; and n is 0.5-3.5 provided that total of m and n is 1-5 or a salt thereof; and the pigment composition can be used with excellent pigment characteristics for various uses, and particularly, when they are used for paints or printing inks in the form of non-aqueous dispersion system, the dispersion system has lower dispersion viscosity and exhibits good flowability and there occurs no color segregation in the dispersion system and it has high coloring power and gives good prints or coats having good gloss and high transparency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.