Formulation of synthetic resin for alcohol-soluble printing ink and preparation method thereof

Abstract

The invention relates to a resin for alcohol-soluble printing ink and relates to the field of chemical synthesis. The current plastic gravure ink uses a benzene-soluble synthetic resin as a main part, so volatilization pollution of a benzene solvent exists in manufacturing and using processes of the printing ink and endangers the health of human body. The invention provides a formulation of the resin for the alcohol-soluble printing ink and a preparation method thereof. The preparation method comprises the following steps: using acrylic ester, ethylene carbonate, vinyl acetate and an active functional group monomer as raw materials; adding an initiator to the raw materials; dissolving the mixture in mixed solution; under a stirring condition, dripping mixture solution of the monomer and asolvent in an alcohol ester solvent to prepare an acrylic pre-polymer; using the solvent to fully dissolve a condensation polymer of cyclohexanone and formaldehyde; under the stirring condition, adding a catalyst and the acrylic pre-polymer; performing a reaction between the dissolved condensation polymer and the acrylic pre-polymer to an end point; lowering the temperature; and adjusting the viscosity to obtain a finished product. The resin is alcohol soluble and has little harm to the human body and the environment. Moreover, the resin has the characteristics of convenient and readily available raw materials, low preparation cost, good pigment-wetting dispersivity and high drying speed.

Description

technical field [0001] The invention relates to the field of chemical synthesis, in particular to a formula of a synthetic resin for alcohol-soluble ink and a preparation method thereof. Background technique [0002] Plastic gravure ink is a coloring material used for plastic packaging printing. It is a liquid substance made of resin, solvent, pigment and additives as the main components and processed through grinding and other processes. The performance of the resin determines the type of ink solvent, and determines the printing suitability, pigment dispersibility and adhesion fastness of the ink. Etc. For a long time, my country's plastic gravure printing ink is mainly based on benzene-soluble synthetic resin, and the ink contains a large amount of benzene solvents. Therefore, there is volatilization pollution of benzene solvents during the manufacture and use of inks, which endangers producers. and consumer health. What's more serious is that the benzene solvents remainin...

AI Technical Summary

Problems solved by technology

It is a liquid substance made of resin, solvent, pigment and additives as the main components and processed through grinding and other processes. The performance of the resin determines the type of ink solvent, and determines the printing suitability, pigment dispersibility and adhesion fastness of the ink. Etc. For a long time, my country's plastic gravure printing ink is mainly based on benzene-soluble synthetic resin, and the ink contains a large amount of benzene solvents. Therefore, there is volatilization pollution of benzene solvents during the manufacture and use of inks, which endangers producers. and consumer health

What is more serious is the benzene solvents left on the packaging bags, which pollute articles and food, and are very harmful to people's lives and health.

In recent years, although water-based and alcohol-soluble polyurethane plastic gravure inks and other types of alcohol-soluble inks have appeared in the market, there are problems such as high price, poor wetting and dispersibility of pigments, and slow drying, which affect the popularization and use of such products. As far as acrylic-related resins and inks are concerned, there are still a few domestic products that can be used for a single variety of white, but there is no such resin available in China for full-color alcohol-soluble plastic gravure printing inks.