Water-in-oil microemulsion printing ink cleaning agent and preparation method thereof

Abstract

The invention relates to a water-in-oil microemulsion printing ink cleaning agent and a preparation method thereof. The cleaning agent is prepared from a C8-C10 petroleum fraction mixture, a composite nonionic surfactant, an ampholytic surfactant, a cosurfactant, organic acid, a corrosion inhibitor and water. The preparation method comprises the steps that the composite nonionic surfactant, the ampholytic surfactant and the cosurfactant are added into the C8-C10 petroleum fraction mixture in sequence, all the materials are stirred for 20-40 min, then a mixture of organic acid and the corrosion inhibitor is added, water is added, stirring is conducted for 20-40 min till the mixture is clear and colorless, and the cleaning agent is obtained. The cleaning agent is high in printing ink stain removing speed, good in effect, high in corrosion inhibition, high in drying speed and good in stability; the cleaning agent has the advantages of being high in flashing point and noncombustible and not polluting the environment, the safety performance is good, the cost is low, and the cleaning agent can be widely used for cleaning of printing machines, ink rollers and rubber blankets; the method is easy to implement and low in energy consumption, and microemulsion can be formed by means of self-emulsification at room temperature.

Description

technical field [0001] The invention relates to an ink cleaning agent and a preparation method thereof, in particular to a water-in-oil microemulsion ink cleaning agent and a preparation method thereof. Background technique [0002] In the modern printing industry, the printing machine and its components will be stained with a large amount of ink during operation. The drying oil in the ink will quickly oxidize, polymerize and dry under the action of the drier to form an oil film, which will affect the quality of the printed matter. Therefore, It is usually necessary to clean parts such as printing presses, ink rollers and offset printing blankets when changing printing plates and parking. [0003] Ink is generally a viscous colloidal fluid made by uniformly mixing binders, pigments, additives and other components and rolling them repeatedly. Due to the special cohesiveness of ink, printing equipment is difficult to clean with general water-based cleaning agents. Traditiona...

AI Technical Summary

Problems solved by technology

They have a common feature, that is, they all belong to the oil-in-water microemulsion. The oil-in-water microemulsion ink cleaning agent has a good cleaning effect, is a stable system in thermodynamics, and is stable in storage. However, because the water content in the cleaning agent exceeds 50 %, there is a defect that the cleaning agent volatilizes and dries slowly in the later stage of cleaning ink dirt

[0006] CN101434764A discloses a kind of ink cleaning agent, is made up of water-soluble nonionic surfactant, anionic surfactant, co-surfactant, fatty acid monoalkyl ester and water, and preparation is simple, and emulsion is stable, and cleaning power is strong, but, its The moisture content is as high as 65%, and there is a defect that the high moisture content is not conducive to the drying of printing machine parts after ink dirt cleaning

[0007] CN101829520B discloses a nonionic surfactant composition and its application. Although it can form an emulsifier with strong emulsifying ability, its water content is still as high as 78%, and it also has a high water content and is not suitable for cleaning ink dirt. Defects with drying of printing press parts

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