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Preparation method and applications of high-gloss water-based paint for epoxy resin modified surface coating

A technology of epoxy resin and water-based coating, applied in paper coating, coating, fiber raw material treatment and other directions, can solve the problems of adhesion, stability, and gloss that need to be further improved, achieve the improvement of gloss and transparency, and make up for gloss. Low degree and good transparency

Inactive Publication Date: 2014-01-29
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The applicant discloses in the Chinese patent CN101250834 the vacuum aluminized paper surface coating coating prepared by adding acrylate resin, neutralizing agent, leveling agent and wear-resistant agent, etc., which has excellent transparency and abrasion resistance, but the coating The adhesion, stability, and gloss of the film still need to be further improved

Method used

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  • Preparation method and applications of high-gloss water-based paint for epoxy resin modified surface coating
  • Preparation method and applications of high-gloss water-based paint for epoxy resin modified surface coating
  • Preparation method and applications of high-gloss water-based paint for epoxy resin modified surface coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In a 2000mL four-necked flask equipped with a condenser, a stirrer, a thermometer and a dropping device, add 8 grams of diethylene glycol, 24 grams of acrylic resin (acid value 400mgKOH / g, molecular weight 5000), 0.04 grams of nonylphenol Polyoxyethylene ether, 0.16 grams of potassium persulfate and 161 grams of deionized water, stirred and heated to 70 ° C, and then added dropwise the following mixed monomers: 40 grams of E-44, 32 grams of methyl methacrylate, 98 grams of styrene mixed Monomer and 0.76 g of nonylphenol polyoxyethylene ether, 1.44 g of potassium persulfate, and 646 g of deionized water were added within 1.0 hour, and the temperature was maintained at 70°C for 4.0 hours, then neutralized with ethylenediamine, and adjusted The pH value was 7.0, and the material was cooled and discharged to obtain a self-made synthetic resin with a weight solid content of 19.8%. Then 50 grams of self-synthetic resin, 100 grams of acrylate resin (glass transition temperatur...

Embodiment 2

[0029] In a 1000mL four-necked flask equipped with a condenser, a stirrer, a thermometer and a dropping device, add 7 grams of diethylene glycol, 80 grams of acrylic resin (acid value 270mgKOH / g, molecular weight 3000), 0.8 grams of dicyclohexyl Sodium sulfosuccinate, 0.4 g of dibenzylcumylphenol polyoxyethylene ether, 4.0 g of sodium persulfate and 292 g of deionized water were stirred and heated to 85°C, and then the following mixed monomers were added dropwise: 60 g of E -42, 36 grams of isooctyl acrylate, 54 grams of styrene mixed monomer and 7.2 grams of sodium dicyclohexyl sulfosuccinate, 3.6 grams of dibenzyl cumylphenol ethoxylates, 4.0 grams of sodium persulfate and Add 423 grams of deionized water within 2.5 hours, keep the temperature at 85°C for 3.0 hours, then neutralize with diethanolamine, adjust the pH value to 9.0, cool down and discharge to obtain a self-made synthetic resin with a weight solid content of 30.0% . Then 116 grams of self-synthetic resin, 100 g...

Embodiment 3

[0031] In a 1000mL four-necked flask equipped with a condenser, a stirrer, a thermometer and a dropping device, add 4 grams of diethylene glycol, 40 grams of acrylic resin (acid value 220mgKOH / g, molecular weight 5000), 3.2 grams of dodecane Sodium diphenyl ether disulfonate, 3.2 grams of dibenzyl cumylphenol polyoxyethylene ether, 8.4 grams of ammonium persulfate and 316 grams of deionized water, stirred and heated to 90 ° C, and then added dropwise the following homogeneous emulsion: 120 grams E-20, 160 grams butyl acrylate and 48 grams styrene, 4.8 grams sodium dodecyl diphenyl ether disulfonate, 4.8 grams dibenzylcumylphenol ethoxylate, 3.6 grams persulfate Ammonium and 79 grams of deionized water, mixed monomers, added within 4.0 hours, maintained the temperature at 90 ° C for 2.0 hours, then neutralized with triethanolamine, adjusted the pH value to 7.5, cooled and discharged, and obtained a self-made synthetic resin. The weight solids content was 50.0%. Then 50 grams o...

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Abstract

The invention provides a preparation method of a high-gloss water-based paint for epoxy resin modified surface coating, which comprises the following steps: adding diethylene glycol, acrylic acid resin, 5-40% of an emulsifier, 10-70% of an initiator, and 20-80% of water into the bottom of a kettle, and heating to 70-90 DEG C; then, uniformly mixing epoxy resin, (methyl) acrylic acid monomers, (methyl) styrene, residual emulsifier, the initiator and the water to be dropwise added into the reaction kettle, and reacting at a temperature of 70-90 DEG C; and neutralizing by using an organic alkali, adjusting the pH value to be 7-9, cooling and then discharging the obtained object so as to obtain self-synthesis resin; and taking 10-35 parts of the self-synthesis resin, 100 parts of acrylate resin, 0.3-0.7 parts of a flatting agent, 0.1-1.0 part of a defoaming agent and 125-400 parts of water, uniformly mixing the taken materials so as to form the high-gloss water-based paint for surface coating. The method disclosed by the invention has the advantages that the high-gloss water-based paint subjected to film formation is high in gloss and transparency.

Description

technical field [0001] The invention relates to a preparation method of a high-gloss water-based coating for epoxy resin modified top coating, which is mainly used as a functional auxiliary agent for the top coating treatment of beer label paper. Background technique [0002] In the papermaking coating process, in order to beautify the printed matter, protect the printed matter, enhance the publicity effect of the printed matter and improve the practical value of the printed matter, we need to polish the paper, that is, to coat (or spray, print) a layer of non-woven fabric on the surface of the printed matter. Color transparent paint, after leveling, drying and calendering, forms a thin and uniform transparent bright layer on the surface of the printed matter, making the surface of the printed matter smoother after glazing, making the incident light reflect evenly, and the ink layer more bright. [0003] Glazing is an effective way to improve the surface performance of prin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/12C08F291/10C08F220/18C08F220/14C08F212/08C08F2/26C08F2/30
Inventor 施晓旦周海波
Owner SHANGHAI DONGSHENG NEW MATERIALS