申请人:DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.
公开号:US20200377480A1
公开(公告)日:2020-12-03
The present invention provides a pigment dispersant: that is capable of remarkably ameliorating fluidity of a liquid product, such as an ink or a paint, which contains particles of a pigment, such as a black azo pigment, in a dispersed state; that can suppress aggregation of piment particles; that prevents occurrence of foreign substances; and that is capable of producing a colored article excellent in optical density. Provided is a pigment dispersant being a compound represented by the following formula (1).
wherein R
1
and R
2
each independently represent a group obtained by eliminating one hydrogen atom from an amino group of an amine compound containing a basic nitrogen atom, and R
3
and R
4
each independently represent a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, or a hydroxy group.
本发明提供了一种颜料分散剂:能够显著改善液体产品(如墨水或油漆)的流动性,其中液体产品中包含颜料颗粒(如黑色偶氮颜料)处于分散状态;能够抑制颜料颗粒的聚集;防止异物的发生;并能够生产具有优异光密度的彩色制品。提供的颜料分散剂是由以下化学式(1)表示的化合物,其中R1和R2分别独立表示通过从含有碱性氮原子的胺化合物的氨基中消除一个氢原子而获得的基团,而R3和R4分别独立表示氢原子、卤素原子、烷基、烷氧基或羟基。