Preparation method of environment-friendly type emulsion for water-based ink

Abstract

The invention relates to an environment-friendly type emulsion for water-based ink and a preparation method thereof. The emulsion provided by the invention is prepared by the following method: aqueous polymerization is carried out to produce a water-soluble resin with ethyl acrylate and methacrylic acid as comonomers, persulfate as an initiator and TDM as a chain transfer agent; then the emulsion polymerisation preparation technology is adopted, wherein styrene, acrylate, methacrylate, methacrylic acid, acrylic acid and a functional monomer are selected as comonomers, the water-soluble resin produced from the last step is used as a protective colloid, a small amount of an emulsifier is added and persulfate is used as an initiator. The emulsion obtained by the above method is mainly characterized by integrating respective advantages of the water-soluble resin and an acrylic acid emulsion. As a binder of the water-based ink, the product provided by the invention has good leveling property, low viscosity, high luster, fast drying speed, high adhesion, pollution resistance, viscosity resistance, salt resistance, water proofness, alkali resistance, alcohol dilution resistance and good wear resistance.

Description

technical field [0001] The invention belongs to the technical field of water-based adhesives, and in particular relates to a method for preparing an environment-friendly emulsion for water-based inks. Background technique [0002] With the continuous development of the modern packaging industry, as a "green printing" material, it has developed rapidly in the flexible packaging and food packaging printing industries. Solvent-based inks have safety hazards such as heavy metals, soluble heavy metals, and organic volatiles (VOC) (such as: benzene, alcohols, hydrocarbons, esters, etc.), solvent residues, etc., which seriously pollute and damage the environment. In Europe and developed countries Has been banned. High-performance water-based inks with low / no organic volatiles (VOC) are especially suitable for packaging and printing materials such as food, beverages, and pharmaceuticals. They are world-recognized environmentally friendly printing materials. The main application fie...

AI Technical Summary

Problems solved by technology

Compared with solvent-based inks, water-based inks prepared with water-soluble resins as binders have inherent defects in gloss, water resistance and drying speed, and it is difficult to improve

However, the water-based ink prepared with ordinary emulsion as the binder has slightly poorer performance in terms of leveling, alcohol dilution, and salt resistance.