Preparation method of environment-friendly type emulsion for water-based ink
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A water-based ink, environmentally friendly technology, applied in the direction of ink, applications, household appliances, etc., can solve the problems that are difficult to improve, water-based ink leveling, alcohol dilution and salt resistance performance are slightly poor, to achieve enhanced bonding strength, High bond strength, good product leveling effect
Inactive Publication Date: 2011-11-09
上海拜道化学有限公司
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Summary
Abstract
Description
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Problems solved by technology
Compared with solvent-based inks, water-based inks prepared with water-soluble resins as binders have inherent defects in gloss, water resistance and drying speed, and it is difficult to improve
However, the water-based ink prepared with ordinary emulsion as the binder has slightly poorer performance in terms of leveling, alcohol dilution, and salt resistance.
Method used
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Examples
Experimental program
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Effect test
Embodiment 1
[0021] (1). Preparation of water-soluble resin
[0022] Add 133g of water, 0.11g of AES 48E and 0.12g of baking soda into the reaction kettle, start stirring, raise the temperature to 78°C, add 0.90g of ammonium persulfate solution diluted with 5.0g of water, then dropwise add 29.0g of ethyl acrylate, formaldehyde Acrylic acid 7.4g, tert-dodecyl mercaptan 2.2g mixed monomer, dripping within 45min, the stirring speed is controlled at 100-150 rpm, and the temperature is controlled at 76-78°C. After the dropwise addition, add ammonia water to adjust the pH to 8.0-8.5, and set aside.
[0023] (2). Preparation of environment-friendly emulsion for water-based ink
[0024] Add AEO355.0g to the above-mentioned water-soluble resin, stir until dissolved, add 10% polymerized monomer (126.0g styrene, 16.0g butyl acrylate) at 78°C, add initial initiator (13.0g water, persulfuric acid ammonium 1.45g), and then drop the remaining monomers, and finish dropping within 2-3 hours. The stirring...
Embodiment 2
[0027] The polymerized monomers were 67g of styrene, 50g of butyl acrylate, and 130g of isooctyl, and the other formulations and processes were the same as in Example 1.
[0028] The water-based ink prepared with the emulsion is soft, low temperature resistant and particularly good in adhesion.
Embodiment 3
[0030] The polymerized monomers were 134g of styrene and 8g of butyl acrylate, and the other formulations and processes were the same as in Example 1.
[0031] Mixing the emulsion with the emulsion prepared in Example 2 to prepare water-based ink can greatly reduce the cost and improve the hardness and gloss.
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Abstract
The invention relates to an environment-friendly type emulsion for water-based ink and a preparation method thereof. The emulsion provided by the invention is prepared by the following method: aqueous polymerization is carried out to produce a water-soluble resin with ethyl acrylate and methacrylic acid as comonomers, persulfate as an initiator and TDM as a chain transfer agent; then the emulsion polymerisation preparation technology is adopted, wherein styrene, acrylate, methacrylate, methacrylic acid, acrylic acid and a functional monomer are selected as comonomers, the water-soluble resin produced from the last step is used as a protective colloid, a small amount of an emulsifier is added and persulfate is used as an initiator. The emulsion obtained by the above method is mainly characterized by integrating respective advantages of the water-soluble resin and an acrylic acid emulsion. As a binder of the water-based ink, the product provided by the invention has good leveling property, low viscosity, high luster, fast drying speed, high adhesion, pollution resistance, viscosity resistance, salt resistance, water proofness, alkali resistance, alcohol dilution resistance and good wear resistance.
Description
technical field [0001] The invention belongs to the technical field of water-based adhesives, and in particular relates to a method for preparing an environment-friendly emulsion for water-based inks. Background technique [0002] With the continuous development of the modern packaging industry, as a "green printing" material, it has developed rapidly in the flexible packaging and food packaging printing industries. Solvent-based inks have safety hazards such as heavy metals, soluble heavy metals, and organic volatiles (VOC) (such as: benzene, alcohols, hydrocarbons, esters, etc.), solvent residues, etc., which seriously pollute and damage the environment. In Europe and developed countries Has been banned. High-performance water-based inks with low / no organic volatiles (VOC) are especially suitable for packaging and printing materials such as food, beverages, and pharmaceuticals. They are world-recognized environmentally friendly printing materials. The main application fie...
Claims
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Application Information
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