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Preparation method of core-shell acrylic emulsion for color digital ink-jet printing

A core-shell acrylic, digital inkjet technology, applied in applications, inks, household appliances, etc., can solve the problems of decreased stability and demulsification of polymer emulsion dispersion systems, and achieve improved stability, good coating adhesion, Excellent wet fastness effect

Inactive Publication Date: 2014-12-10
李娟 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing acrylic polymer emulsions used for weak solvent inkjet printing coating materials are generally general-purpose pure acrylic emulsions, but there are the following problems: 1. Emulsion polymerization systems generally introduce single-component crosslinking monomers, such as N -Hydroxymethylacrylamide, etc.
A certain amount of PVA is added to the current matt weak solvent ink absorption coating formula to improve the fluorescent whiteness of the coating and the vividness of the printing color, but the disadvantage is that the presence of carboxyl groups often leads to the introduction of PVA. The stability of the emulsion dispersion system decreases, and even demulsification occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of core-shell acrylic emulsion for color digital inkjet printing of the present invention comprises the following steps:

[0021] Step 1: Preparation of monomer solution A, which is formed by mixing 10 g of butyl acrylate, 30 g of methyl methacrylate, 0.5 g of methacrylic acid, and 0.5 g of diacetone acrylamide;

[0022] Step 2: Preparation of monomer solution B, which is formed by mixing 10 g of butyl acrylate, 20 g of methyl methacrylate, and 0.5 g of diacetone acrylamide;

[0023] Step 3: Next, mix 1 / 10 weight ratio of monomer solution A, 90g of water, 1g of sodium dodecylsulfonate, 1g of nonylphenol polyoxyethylene ether, 0.2g of disodium hydrogen phosphate, 0.1g The ammonium persulfate is placed in a 500ml flask, the rotation speed is maintained at 300-600rpm, and the stirring is continued for 0.5-1.5h to obtain an emulsion;

[0024] Step 4: Heat the above-mentioned emulsion to 80 oC, and carry out a polymerization reaction for 0.5-1.5 hours...

Embodiment 2

[0030] The preparation method of core-shell acrylic emulsion for color digital inkjet printing of the present invention comprises the following steps:

[0031] Step 1: Preparation of monomer solution A, which is formed by mixing 15 g of butyl acrylate, 35 g of methyl methacrylate, 1 g of methacrylic acid, and 1 g of diacetone acrylamide;

[0032] Step 2: Preparation of monomer solution B, which is formed by mixing 20 g of butyl acrylate, 30 g of methyl methacrylate, and 1 g of diacetone acrylamide;

[0033] Step 3: Next, mix 1 / 5 weight ratio of monomer solution A, 90g of water, 2g of sodium dodecylsulfonate, 2g of nonylphenol polyoxyethylene ether, 0.5g of disodium hydrogen phosphate, 0.3g The ammonium persulfate is placed in a 500ml flask, the rotation speed is maintained at 300-600rpm, and the stirring is continued for 0.5-1.5h to obtain an emulsion;

[0034] Step 4: Heat the above-mentioned emulsion to 80 oC, and carry out a polymerization reaction for 0.5-1.5 hours at the...

Embodiment 3

[0040] The preparation method of core-shell acrylic emulsion for color digital inkjet printing of the present invention comprises the following steps:

[0041] Step 1: Preparation of monomer solution A, which is formed by mixing 20 g of butyl acrylate, 40 g of methyl methacrylate, 1.5 g of methacrylic acid, and 1.5 g of diacetone acrylamide;

[0042] Step 2: Preparation of monomer solution B, which is formed by mixing 30 g of butyl acrylate, 40 g of methyl methacrylate, and 1.5 g of diacetone acrylamide;

[0043] Step 3: Then mix 1 / 10-1 / 2 monomer solution A, 90g of water, 3g of sodium dodecylsulfonate, 3g of nonylphenol polyoxyethylene ether, 0.7g of hydrogen phosphate Put sodium and 0.5g of ammonium persulfate in a 500ml flask, maintain the rotation speed at 300-600rpm, and keep stirring for 0.5-1.5h to obtain an emulsion;

[0044] Step 4: Heat the above emulsion to 70 oC, and carry out a polymerization reaction for 0.5-1.5 hours at the same time. During the polymerization r...

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PUM

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Abstract

The invention discloses a preparation method of a core-shell acrylic emulsion for color digital ink-jet printing. The preparation method comprises the steps of the preparation of a monomer solution A, the preparation of a monomer solution B, polymerization reaction, and the like. By using the preparation method, the stability of a polymer emulsion can be improved, especially the viscosity is not increased with the increase of storage time, and obtained products are excellent in wet color fastness, good in coating binding force and high in strength. By using a method for core-shell emulsion polymerization, used acrylic functional monomers are all polymerized in a core of an emulsion microsphere, and carboxyl does not exist in a shell formed by emulsion polymerization, so that a situation that hydroxyl in PVA and carboxyl in polymers interact to cause the demulsification of the polymers can be avoided, thereby improving the stability of weak solvent dispersion liquid.

Description

Technical field [0001] The present invention involves a coloring method for coloring nuclear shell acrylic emulsion for coloring inkjet printing, especially a preparation method for a colorful digital digital inkjet printing with a good stability. Background technique [0002] The existing acrylic polymer emulsion for weak solvent inkjet printing and coating material is generally universal pure propylene emulsion, but there are the following problems: 1. Lotion polymerization system is generally introduced into a single -component cross -linking monomer, such as N- -Hydroxymethylene.The disadvantage is that the synthetic polymer emulsion will occur slowly under room temperature conditions, causing the emulsion viscosity to gradually increase, which is not conducive to storage.2. The emulsion polymer system generally introduces acrylic monochromes. The carboxyl group energy group introduced on the polymer chain will promote the high molecular chain cross -linking and improve the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F2/30C08F2/26C09D11/30
Inventor 贾翔宇王玉丰陆建辉罗孝勇
Owner 李娟
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