Preparation method of phthalocyanine blue with good crystallization resistance for ink jet

Abstract

The invention discloses a preparation method of phthalocyanine blue with good crystallization resistance for ink jet, and belongs to the technical field of pigment preparation. The invention disclosesthe preparation method of phthalocyanine blue with good crystallization resistance for ink jet comprises the following steps: sequentially preparing a phthalocyanine blue filter cake and a phthalocyanine blue derivative filter plate; mixing the two with water and then adding a solvent; and performing subsequent treatment to obtain phthalocyanine blue 15: 4. By controlling reasonable reaction parameters and reaction time, the production process is shortened and the cost is reduced; produced pollution gas is reduced, little impact is generated on the environment, moreover, the coloring strengthis relatively strong, meanwhile, the reaction materials are stirred in the drying process; the reaction materials are not easy to gather; according to the phthalocyanine blue pigment preparation device, the dispersity of phthalocyanine blue pigment can be effectively improved, then the crystallization resistance of the phthalocyanine blue pigment is improved, the phthalocyanine blue pigment can be better applied to ink-jet ink, meanwhile, filtering, washing, drying and smashing operations in the pigment preparation process are conducted in an integrated treatment device, the trouble of transferring reaction materials is reduced, and the production cost is saved.

Description

technical field [0001] The invention relates to the technical field of pigment preparation, in particular to a preparation method of phthalocyanine blue for inkjet with good crystallization resistance. Background technique [0002] Phthalocyanine blue is a functional pigment, mainly including several series of P.B15, P.B15:1, P.B15:3, P.B15:4, P.B15:6 and aluminum phthalocyanine, with pure , bright strong red hue, anti-crystallization, anti-flocculation, heat-resistant and stable properties, mainly used in coatings, plastics, inks, textile masterbatches, printing pastes and other industries. Among them, P.B15:4 is the most stable blue pigment among phthalocyanine blue pigments. It has good stability to heat and organic solvents and presents bright green light blue. [0003] The traditional preparation method is mainly obtained by adding solvent to the crude copper phthalocyanine through vertical ball milling, horizontal milling or kneading. During this process, the materia...

AI Technical Summary

Problems solved by technology

[0003] The traditional preparation method is mainly obtained by adding solvent to the crude copper phthalocyanine through vertical ball milling, horizontal milling or kneading. During this process, the material is prone to aggregation, resulting in poor dispersion, which in turn makes it difficult for the pigment particles to disperse when the finished phthalocyanine blue product is used in inkjet inks and other fields, and the crystallization resistance is not strong, which easily leads to ink dispersibility. The storage time is shortened, and the ink is prone to agglomeration, which affects its normal service life. In the preparation process of phthalocyanine blue, it is usually necessary to filter, wash, dry (dry), and pulverize the reacted materials. The above-mentioned steps need to be carried out in multiple different devices. On the one hand, it is troublesome to transfer the reaction materials, and on the other hand, it increases the production cost.

Images