Highly light fast violet lake and preparation method thereof

Abstract

The invention belongs to the technical field of pigments. The invention aims to provide highly light fast violet lake. The highly light fast violet lake is prepared from the following raw materials in parts by weight: 15-18 parts of basic violet; 4-8 parts of glacial acetic acid; 6-8 parts of disodium hydrogen phosphate; 23-29 parts of sodium tungstate; 8-15 parts of sodium molybdate; 25-27 parts of hydrochloric acid; 2-3 parts of a dispersant; 2-3 parts of an emulsifier; and 5-9 parts of a light-resistant auxiliary agent. The light-resistant auxiliary agent is a mixture formed by mixing sodium carbonate and sodium silicate according to the weight part ratio of 1: 1. According to the highly light fast violet lake and the preparation method thereof of the invention, the pigment is subjected to inorganic hybridization modification by adding the light-resistant auxiliary agent, so that the overall light resistance of the pigment can be greatly improved and can reach about grade 6 through verification, meanwhile, the influence on the color of the pigment is extremely small, and the overall color rendering property and stability of the pigment are extremely good.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to a green lotus chromogen with high light resistance and a preparation method thereof. Background technique [0002] Pigment, as a widely used dyeing material, has been widely used in various industries such as paint, printing and dyeing, plastic products, papermaking, rubber products and ceramics. In recent years, with the transformation of industrial production from high speed to high quality, the market has higher and higher requirements for various properties of pigments. Pigment purple, as a basic color type in pigments, is a basis for compounding other color type pastes. At the same time, it is the same as pigment red, and it is also the two most commonly used color type raw materials in inks. [0003] In recent years, after years of research and development, our company has developed a series of pigment violet with basic violet as the basic colorant, and after many iterati...

AI Technical Summary

Problems solved by technology

The pigment violet prepared by this method can basically reach about level 4 in terms of light fastness, which is equivalent to that of general inorganic dyes. However, in the application field of high-end pigment violet, there is still room for further improvement in its light fastness

At the same time, in terms of production and preparation process, due to the need to dissolve basic violet in hot water, when the traditional dissolution tank is used for the dissolution operation, not only the dissolution takes a long time, but also the existence of incomplete dissolution will affect Subsequent production and processing

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