Water-based colour paste for printing ink

Abstract

The invention relates to the technical field of water-based colour paste and provides water-based colour paste which is environmentally friendly, non-toxic, good in dispersing performance, strong in tinting strength and resistant to light, does not become thick, has anti-ultraviolet ray property, good weatherability and resistance to chemical attack and does not get mildew. The water-based colour paste is prepared from the following raw materials in parts by weight: 50-60 parts of pigment, 4-6 parts of wetting agent, 9-12 parts of dispersing agent, 6-10 parts of antioxidant, 0.3-0.45 part of antiseptic, 0.3-0.5 part of mildew preventive, 0.5-0.7 part of water-based defoaming agent, 6-8 parts of thickening and anti-settling agnet, 6-10 parts of ultraviolet light absorber and 30-60 parts of deionized water.

Description

technical field [0001] The invention relates to the technical field of water-based color paste, in particular to a water-based color paste for ink. Background technique [0002] Ink is mainly composed of two parts: color paste and binder. Traditional color paste contains organic solvents. The amount of organic solvents brought by inks is as high as 1 million tons worldwide every year, resulting in a huge waste of resources. Among them, organic solvents such as ethanol, butyl acetate, toluene, and xylene are often used. Most of it will be eliminated after drying, but the remaining part will still cause harm to the human body. Long-term contact will make the skin dry and rough. If it penetrates into the skin or blood vessels, it will endanger the human blood cells and hematopoietic function with the blood, and may even cause chronic poisoning of the body. . The volatilization of solvents causes air pollution, which has a great impact on the growth of various plants and destr...

AI Technical Summary

Problems solved by technology

Most of it will be eliminated after drying, but the remaining part will still cause harm to the human body. Long-term contact will make the skin dry and rough. If it penetrates into the skin or blood vessels, it will endanger the human blood cells and hematopoietic function with the blood, and may even cause chronic poisoning of the body.

The volatilization of solvents causes air pollution, which has a great impact on the growth of various plants and destroys the ecological balance.

Heavy metals are sometimes absorbed by plants, and if absorbed by the human body, they will cause considerable harm

[0003] With the development of science and technology, the requirements for color paste are getting higher and higher. At present, water-based color paste has appeared on the market. It uses water as a solvent and diluent, is environmentally friendly and non-toxic, and is popular among consumers. The surface tension of the ink is higher than the organic solvents commonly used in inks, which has a great influence on the stability of the water-based color paste, and it is easy to cause the agglomeration of the pigment particles, which is called the "returning coarse" phenomenon in the factory, which greatly affects the product quality of the printed product, and even Agglomeration and delamination make ink products scrapped and cause large economic losses

[0004] Chinese Patent No. 201110104463.9 discloses a high-fineness water-based color paste and its preparation method. Agent and ion-free water are obtained through dispersion, grinding, high-pressure homogenization, and surface treatment processes. The water-based color paste prepared by this method has strong stability, but poor weather resistance, light resistance, and chemical corrosion resistance. Mildew and no UV resistance