Pigment dispersing agent prepared by amphiphilic precipitated silica

Abstract

The invention discloses a pigment dispersing agent prepared by the amphiphilic precipitated silica and relates to the technical field of precipitated silica. The pigment dispersing agent is prepared from the following raw materials in parts by weight: 15-20 parts of amphiphilic precipitated silica, 10-15 parts of isopropyl alcohol, 6-11 parts of cetyl ethyl hexanoate, 5-9 parts of terpene resin, 5-9 parts of polyvinylpyrrolidone, 4-7 parts of hydrogenated castor oil, 3-6 parts of microcrystalline wax, 3-6 parts of polyethylene glycol 400, 2-4 parts of sodium cocoanutylglutamate, 2-4 parts of sodium polyacrylate, 2-4 parts of turpentine oil, 1-2 parts of isooctyl oleate, 1-2 parts of coupling agent of organic titanate, 0.5-1 part of nano gelatine powders, 0.5-1 part of urea, and 0.5-1 part of sulfurized lard oil. According to the invention, by means of the pigment dispersing agent, the pigment is uniformly dispersed in a binder, so that the particles of the pigment are uniformly suspended in the binder for a long time. Therefore, during the storage process of a colored paint, the pigment flocculation phenomenon is avoided. Moreover, the fluidity and the thermal stability of the colored paint are improved, so that the storage quality and the painting effect of the colored paint can be ensured.

Description

[0001] Technical field: [0002] The invention relates to the technical field of precipitated silica, in particular to a pigment dispersant prepared by using amphiphilic precipitated silica. [0003] Background technique: [0004] In addition to the wetting effect of the wetting agent, the pigment dispersant has one end of the active group that can be adsorbed on the surface of the pigment that is crushed into fine particles, and the other end is solvated into the paint base to form an adsorption layer, resulting in charge repulsion or entropy repulsion. The pigment particles are dispersed and suspended in the paint base for a long time to avoid re-flocculation, thus ensuring the storage stability of the prepared color paint system. However, the stability of the currently used dispersant is poor, and it cannot meet the requirement of long-term dispersion and suspension of pigment particles in the paint base. During the storage of the paint, the phenomenon of pigment sedimentati...

AI Technical Summary

Problems solved by technology

However, the stability of the currently used dispersant is poor, and it cannot meet the requirement of long-term dispersion and suspension of the pigment particles in the paint base. During the storage of the paint, the phenomenon of pigment sedimentation and precipitation will occur. Therefore, it is urgent to develop a new type of pigment dispersant.