Mixture of fused-ring aromatic pigment and polymer material, its preparation method and its downstream products

Abstract

This application relates to a mixture of condensed ring aromatic pigments and polymer materials, its preparation method and its downstream products. In this method, different thermoplastic polymer materials can be mixed with the reactants used to generate fused-ring aromatic pigments, and the reactants and polymer materials can The mixture can be extruded or kneaded to obtain a mixture of fused-ring aromatic pigments and polymer materials in one step. Compared with pigments, the raw material reactants of pigments have better dispersion in polymer materials, so extrusion or Kneading, the pigment can be directly generated and evenly dispersed in the polymer material, and there is no need to add any solvent during the extrusion or kneading process, and the ortho-diamine compound is almost completely consumed, and the obtained mixture does not need to be purified, avoiding the traditional process of pigment synthesis. The generation of three wastes greatly simplifies the technological process and reduces energy consumption.

Description

technical field

[0001] The invention relates to the technical field of pigments, in particular to a mixture of condensed ring aromatic pigments and polymer materials, a preparation method and downstream products thereof. Background technique

[0002] Fused-ring aromatic vat dyes (Vat Dyes) have bright color and excellent fastness, especially in light fastness and solvent resistance. However, due to the poor dispersion of fused-ring aromatic compounds in the production process, it is necessary to use high-boiling-point, difficult-to-remove solvents, resulting in a large amount of waste liquid, and because the purification of dye molecules is also very difficult, so that the reaction yield of such dyes is low and the price is low. High, and the processing technology is relatively more complicated, which greatly limits the application and development of this type of dye.

[0003] US20080139813 uses metal catalysts such as ammonium molybdate, molybdenum oxide, molybdenum carbon...

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