Hydroxypropyl cyclodextrin containing alcohol-free concentrated high-separation dampening solution prepared from magnetic activated water and preparation method of dampening solution

Abstract

The invention relates to dampening solution for offset printing, in particular to hydroxypropyl cyclodextrin containing alcohol-free concentrated high-separation dampening solution prepared from magnetic activated water and a preparation method of the dampening solution. The dampening solution is prepared from, by weight, 6-8 parts of glycerol, 0.5-0.8 part of dispersing agents MF, 30-40 parts of magnetic activated water, 3-5 parts of hydroxypropyl cyclodextrin, 1-2 parts of octadecyl dimethyl benzyl ammonium chloride, 3-5 parts of disodium hydrogen phosphate, 0.01-0.02 part of ascorbic acid, an appropriate amount of acid buffer, 15-20 parts of Arabic gum and 2-3 parts of fatty alcohol-polyoxyethylene ether. According to the dampening solution, the magnetic activated small molecule water serves as a solvent, the dampening solution is more easily spread on a plate surface to form a film, dampening effects are accelerated, the added hydroxypropyl cyclodextrin is good in hydrophily, hydrophily of the film is enhanced, water-ink separation in the printing process is further accelerated, printing speed is increased, and high-quality and high-efficiency capacity circulation is realized. Besides, the solution without volatile alcohol or other harmful substances is more environmentally friendly and safer and can be used by being diluted into needed concentration.

Description

technical field [0001] The invention relates to a fountain solution for offset printing, in particular to an alcohol-free concentrated high-separation fountain solution containing hydroxypropyl cyclodextrin prepared by magnetically activated water and a preparation method thereof. Background technique [0002] Offset printing technology mainly uses the principle of incompatibility of oil and water. When printing, keep the graphic part with ink and no water, and the blank part with water and no ink. It is particularly important to maintain a stable water-oil balance during the printing process. Surveys show that during the printing process The quality of water is directly related to the speed and efficiency of printing. The so-called water refers to the fountain solution, so the correct control and use of the fountain solution is an important part of printing quality control. [0003] With the gradual progress of printing technology, the development of fountain solution has g...

AI Technical Summary

Problems solved by technology

[0003] With the gradual progress of printing technology, the development of fountain solution has gradually experienced three development stages: common fountain solution, alcohol fountain solution and non-ionic surfactant fountain solution. Alcohol fountain solution is also controversial due to environmental protection issues. Non-ionic surfactant fountain solution has better performance, but its popularity is narrow. Most of the commercially available fountain solutions are alcohol-based fountain solutions. Therefore, the development of an alcohol-free dampening solution is more in line with environmental protection requirements. In order to develop a new type of dampening solution, it is necessary to start with the composition of the dampening solution and change the performance of traditional components, thereby preparing a class of high-efficiency, high-quality, and environmentally friendly. New alcohol-free fountain solution