An environment-friendly anti-skinning agent and its application in the production process of cold-set ink

Abstract

The invention relates to the technical field of ink, in particular relates to an environment-friendly anti skinning agent and application of same in a cold-set ink production process. The environment-friendly anti skinning agent is prepared by mixing 15 to 45 percent of 2,6-di-tert-butyl-4-methylphenol, 10 to 35 percent of vegetable oil, and 35 to 65 percent of mineral oil. Compared with the prior art, the environment-friendly anti skinning agent provided by the invention has the advantages of environmental protection and non-poison, by adopting the environment-friendly anti skinning agent, the cold-set ink and ordinary ink can be produced on the same production line, and when conversion of production is performed, a device does not need to be thoroughly washed and the quality of the cold-set ink can not be affected.

Description

technical field [0001] The invention relates to the technical field of ink, in particular to an environment-friendly anti-skinning agent and its application in the production process of cold-set ink. Background technique [0002] Cold-set rotary offset ink (referred to as cold-set ink) is a lithographic printing ink that can be absorbed by the substrate and dried at room temperature without heating. Its printed matter does not need to be dried by a heating device, so the cost of use is low, and it is suitable for printing newsprint and offset paper. [0003] In the prior art, the preparation methods of cold-set inks and common inks both include the following steps: 1) Prepare the ink base ink; 2) Stir and disperse: add binders and additives to the ink base ink, stir and disperse evenly; 3 ) Adjustment test: After adjusting the viscosity of the ink to meet the requirements, the finished ink can be obtained. However, compared with ordinary inks, cold-set inks have the advant...

AI Technical Summary

Problems solved by technology

This makes it difficult to produce cold-set inks and ordinary inks on the same production line, and separating the two production lines will increase the production costs of production equipment, space, and manpower.

If the same production line is to be implemented, when the production of cold-set ink is converted from ordinary ink containing desiccant, it will take a lot of time and manpower to clean the production equipment to ensure that there is no desiccant residue, which will also increase the cost and low production efficiency

[0004] Although the anti-skinning agent in the prior art can delay the skinning time of the cold-set ink, the existing anti-skinning agent is difficult to be applied in the production process of the cold-set ink, and its main reasons are: (1) now There are two main types of anti-skinning agents for inks: one is phenolic compounds (such as o-methoxyphenol, etc.), and the other is oxime compounds (such as methyl ethyl ketone oxime and butyraldehyde oxime, etc.). Skin agents are poisonous chemical substances. In order to meet the requirements of safety standards, the allowable dosage is generally below 1%, and the anti-skinning time is generally less than 30 hours, which cannot meet the long-term anti-skinning requirements. The amount of skin agent is less, and there is more desiccant left in the equipment. Therefore, if the same production line is used for ordinary ink and cold-set ink, the equipment still needs to be thoroughly cleaned when converting to produce cold-set ink; (2) For ordinary ink, Different colors and different types of products require different amounts of added desiccant, and the amount of anti-skinning agent is related to the amount of desiccant

Especially to achieve long-term (such as 720h or more) exposure to the air without skinning, the anti-skinning agent needs a large amount (more than 2%) to achieve, but too much anti-skinning agent will affect The drying time of cold-set ink and the properties of the ink will affect the quality of the ink, and excessive use will pollute the environment

Images