Alcohol substitute in alcohol-free fountain solution and preparation method thereof
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A substitute and dampening solution technology, applied in the field of alcohol substitutes for alcohol-free dampening solution, can solve the problems of difficult control of water-ink balance, excessive emulsification of ink, poor wetting performance, etc., achieve good water transfer performance, reduce surface Good tension and compatibility
Active Publication Date: 2014-07-30
JIANGMEN CHENGXIN PRECISION CHEM FACTORY
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Problems solved by technology
There are many non-alcoholic fountain solution technologies that still cannot achieve this effect. For example, the Chinese patent application number 200910036695.8 discloses a non-alcoholic fountain solution concentrate. This patent utilizes fatty alcohol polyoxyethylene ether, alkyl glucoside The three surfactants, sulfonylated glucosamine, are used as substitutes for alcohol, and the total addition amount is 8-32%. Increasing the addition amount can reduce the surface tension of the fountain solution, but it will also cause excessive emulsification of the ink, which is easy Ink accumulation phenomenon
Method used
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Embodiment 1
[0033] Alcohol substitute A in a kind of alcohol-free fountain solution, by weight percentage, is composed as follows:
[0034]
[0035] Weigh the above raw materials in proportion, first add water into the reaction kettle, raise the temperature to 70°C, then add polyethylene glycol-2000, stir and dissolve, then cool down to below 40°C, add N-ethylpyrrolidone (NEP), and dissolve completely Then add self-synthesized fluorine-containing gemini surfactant, and stir for 1 hour to prepare alcohol substitute A.
Embodiment 2
[0037] Alcohol substitute A in a kind of alcohol-free fountain solution, by weight percentage, is composed as follows:
[0038]
[0039] Weigh the above raw materials in proportion, first add water into the reaction kettle, raise the temperature to 70°C, then add polyethylene glycol-4000, stir and dissolve, then cool down to below 40°C, add N-ethylpyrrolidone (NEP), and dissolve completely Then add self-synthesized fluorine-containing gemini surfactant, and stir for 1 hour to prepare alcohol substitute A.
Embodiment 3
[0041] Alcohol substitute A in a kind of alcohol-free fountain solution, by weight percentage, is composed as follows:
[0042]
[0043] Weigh the above raw materials in proportion, first add water into the reaction kettle, raise the temperature to 70°C, then add polyethylene glycol-20000, stir and dissolve, then cool down to below 40°C, add N-ethylpyrrolidone (NEP), and dissolve completely Then add self-synthesized fluorine-containing gemini surfactant, and stir for 1 hour to prepare alcohol substitute A.
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Abstract
The invention relates to a constituent of fountain solution for a lithographic printer, and particularly discloses alcohol substitute A for alcohol-free fountain solution. The alcohol substitute A comprises the following constituents in percent by weight: 5 to 15 percent of self-synthesis fluorine-containing dimeric surfactant, 20 to 30 percent of polyethylene glycol, 20 to 30 percent of N-ethyl-pyrrolidone (NEP), and the balance of water, wherein the chemical formula of the self-synthesis fluorine-containing dimeric surfactant is shown in the description, and m is any integer from 6 to 8. The alcohol substitute A is applied to the alcohol-free fountain solution, can effectively reduce the surface tension, has good wettability, has good water feeding property when being used for the existing equipment, has good compatibility with printing ink, and rapidly realizes ink-water balance. When the alcohol-free fountain solution produced by adding the alcohol substitute A into the exiting fountain solution is used for lithography, ethyl alcohol or isopropyl alcohol can be free of being added, the cost is reduced, the quality is improved, and the alcohol substitute A is safer and more environmentally friendly, and can be beneficial to green printing.
Description
technical field [0001] The invention relates to a component of a fountain solution for a lithographic printing machine, in particular to an alcohol substitute for an alcohol-free fountain solution. Background technique [0002] Now the country is implementing a green printing policy, one of which is alcohol-free dampening, and the biggest problem in realizing alcohol-free dampening is that there must be good products that can achieve the same effect as alcohol dampening. There are many non-alcoholic fountain solution technologies that still cannot achieve this effect. For example, the Chinese patent application number 200910036695.8 discloses a non-alcoholic fountain solution concentrate. This patent utilizes fatty alcohol polyoxyethylene ether, alkyl glucoside The three surfactants, sulfonylated glucosamine, are used as substitutes for alcohol, and the total addition amount is 8-32%. Increasing the addition amount can reduce the surface tension of the fountain solution, but...
Claims
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