Ink taking dimethyl carbonate as solvent and preparation method for ink
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A technology of dimethyl carbonate and ink, applied in the field of ink, can solve the problems of large solvent residue and excessive benzene content, and achieve the effects of good gloss, low solvent residue, and safe production and use
Active Publication Date: 2012-01-04
TONGLING JINTAI CHEM INDAL
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Among all kinds of volatile organic solvents, toxic benzenes (benzene, toluene, xylene, etc.) are the main solvents. The advantages are fast volatilization speed, good adaptability, and excellent adhesion fastness. The disadvantage is that there is a large amount of solvent residue. , especially if the benzene content exceeds the standard
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example 1
[0020] An ink using dimethyl carbonate as a solvent, the raw materials and proportion of the ink are as follows: dimethyl carbonate is added in an amount of 30% of the weight of the ink, methylcyclohexane is 15%, ethyl acetate is 12%, iso Propanol 5%, resin 15%, 99R imported carbon black 20%, butanone 1.5%, dispersant 1.5%.
[0021] The above-mentioned preparation method of the gravure printing ink that is used for PET base material is as follows:
[0022] (1) Raw material preliminary treatment process: Mix 30% dimethyl carbonate, 15% methylcyclohexane, 12% ethyl acetate and 5% isopropanol to make a mixed solvent;
[0023] (2) Refining process of varnish: use the above mixed solvent to dissolve 15% resin of ink weight to form a resin solution with a certain concentration;
[0024] (3) Mixing process: mix the above resin solution with 20% of the ink weight of organic pigment 99R imported carbon black, stir and disperse to prepare a semi-finished color paste;
[0025] (4) Gri...
example 2
[0029] As described in Example 1, the difference is that the ink raw materials and proportions are: the addition of dimethyl carbonate is 30% of the ink weight, methylcyclohexane is 6%, ethyl acetate is 10%, isopropanol 5% for resin, 16% for resin, 30% for titanium dioxide, 1.5% for methyl ethyl ketone, and 1.5% for dispersant, and the finished white ink is obtained.
example 3
[0031] As described in Example 1, the difference is that the ink raw materials and proportioning are: the addition of dimethyl carbonate is 22% of the ink weight, methylcyclohexane is 14%, ethyl acetate is 10%, isopropanol 6% for resin, 15% for resin, 30% for pigment red, 1% for methyl ethyl ketone, and 1% for dispersant. That is, the finished product of red ink is obtained.
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Abstract
The invention discloses ink taking dimethyl carbonate as a solvent, and a preparation method for the ink, and aims to provide ink having advantages of high initial dryness and adhesion, low solvent residue, good gloss, safety, nontoxicity, sanitation and environment friendliness and taking dimethyl carbonate as a solvent, and a preparation method for the ink. The preparation method comprises the following steps of: preparing dimethyl carbonate, methyl cyclohexane, ethyl acetate and isopropanol into a mixed solvent; dissolving resin by using the mixed solvent; adding an organic pigment or an inorganic pigment according to product performance requirements, stirring and dispersing, and fully grinding on a sand mill; adding butanone and a dispersing agent in a ratio according to product performance requirements, and fully stirring and dispersing to obtain ink; and filtering off components with the fineness of more than 15mu m by using a filtering machine to obtain the finished product of ink.
Description
technical field [0001] The invention relates to an ink, in particular to an ink using dimethyl carbonate as a solvent and a preparation method thereof. Background technique [0002] In today's society, people's pursuit of commodity packaging is not limited to aesthetics, but more attention is paid to the hygiene, safety and environmental performance of packaging, especially the appearance of the "melamine incident" has aroused people's concern about food safety. consideration. The non-toxic and harmless edible commodities have become the focus of attention of consumers, producers and related industries. In addition, food packaging is basically based on plastic materials, and the ink solvents used are mostly volatile organic solvents. The volatilization of various volatile organic solvents causes air pollution and other problems, especially gravure printing inks. . All kinds of volatile organic solvents will not only react photochemically with nitrogen oxides in the air, b...
Claims
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