Acrylic copolymer emulsion, water-based ink and preparation method thereof

Abstract

The invention provides an acrylic copolymer emulsion, the acrylic acid copolymer emulsion is prepared from methyl methacrylate, n-butyl acrylate, 2-ethylhexyl acrylate, acrylic acid and hydroxyethyl methylacrylate monomers through copolymerization, and the invention further provides water-based ink based on the acrylic acid copolymer emulsion. The invention also provides a preparation method of the water-based ink. The water-based ink prepared by the method has the advantages of low odor, low VOC (Volatile Organic Compounds), boiling resistance, alcohol scrubbing resistance, strong acid resistance, friction resistance, hand perspiration resistance and excellent adhesion to PMMA (Polymethyl Methacrylate).

Description

technical field

[0001] The invention relates to the field of water-based ink, in particular to an acrylic copolymer emulsion, water-based ink and a preparation method thereof. Background technique

[0002] Inks are divided into solvent-based inks and water-based inks. Solvent-based inks have the characteristics of strong odor and high VOC, which are not good for human health and the environment. Therefore, water-based inks have become a market trend. The binders of water-based inks are mainly water-based resins, including glue. At present, due to the properties of water-based inks, some of them can be applied to plastics with strong polarity, such as PC and ABS. However, the adhesion to PMMA plastics is poor, and the main application In paper printing, some of them can be applied to the spraying of metal materials. In addition, water-based inks also have the disadvantages of poor water boiling resistance, poor alcohol scrubbing resistance, poor acid resistance, poor friction...

Examples

Embodiment 1

[0039] An acrylic acid copolymer emulsion is characterized in that it is prepared by the following preparation method:

[0040] Add the base material of component A into the reaction kettle at room temperature, stir at 300-400r / Min, raise the temperature to 70°C, add 1 / 4 of the initiator solution of component C, and keep warm for 30 minutes for copolymerization;

[0041] Stir component B in the pre-emulsification tank for 15 minutes to make a pre-emulsification monomer at a speed of 300r / min;

[0042] Raise the temperature and control the temperature at 81°C, add the pre-emulsified monomer and the remaining C component initiator solution dropwise into the reaction kettle equipped with the base material of A component at the same time, finish adding dropwise in 3 hours, and continue the insulation and copolymerization for 1 hour ;

[0043] Cool down to 60°C, add ammonia water, adjust the pH to 7-8, cool down to below 45°C, filter and discharge to prepare acrylic acid copolymer...

Embodiment 2

[0058] A kind of water-based ink, comprises the component of following mass fraction:

[0059]

[0060] It is characterized in that it also includes the acrylic acid copolymer emulsion in the above embodiment 1, the mass fraction of the acrylic acid copolymer emulsion is 40.5%, and the film-forming aid is composed of diethylene glycol with a mass fraction of 1%-5%. Alcohol ether and mass fraction are 2%-10% dipropylene glycol butyl ether composition, in the present embodiment, the mass fraction of described diethylene glycol ether is 5%, and the mass fraction of described dipropylene glycol butyl ether is 9% , the defoamer is composed of 0.2% TEGO 902W and 0.2% TEGO 904W by mass fraction, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizer It is dimethylethanolamine, the thickener is PS 166, and the matting powder is OK500.

Embodiment 3

[0062] A kind of water-based ink, comprises the component of following mass fraction:

[0063]

[0064]

[0065] It is characterized in that it also includes the acrylic acid copolymer emulsion in the above-mentioned embodiment 1, the mass fraction of the acrylic acid copolymer emulsion is 45.5%, and the film-forming aid is composed of diethylene glycol with a mass fraction of 1%-5%. Alcohol ether and mass fraction are 2%-10% dipropylene glycol butyl ether composition, in the present embodiment, the mass fraction of described diethylene glycol ether is 5%, and the mass fraction of described dipropylene glycol butyl ether is 9% , the defoamer is composed of 0.2% TEGO 902W and 0.2% TEGO 904W by mass fraction, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizer It is dimethylethanolamine, the thickener is PS 166, and the matting powder is OK500.

technical field

[0001] The invention relates to the field of water-based ink, in particular to an acrylic copolymer emulsion, water-based ink and a preparation method thereof. Background technique

[0002] Inks are divided into solvent-based inks and water-based inks. Solvent-based inks have the characteristics of strong odor and high VOC, which are not good for human health and the environment. Therefore, water-based inks have become a market trend. The binders of water-based inks are mainly water-based resins, including glue. At present, due to the properties of water-based inks, some of them can be applied to plastics with strong polarity, such as PC and ABS. However, the adhesion to PMMA plastics is poor, and the main application In paper printing, some of them can be applied to the spraying of metal materials. In addition, water-based inks also have the disadvantages of poor water boiling resistance, poor alcohol scrubbing resistance, poor acid resistance, poor friction...

Examples

Embodiment 1

[0039] An acrylic acid copolymer emulsion is characterized in that it is prepared by the following preparation method:

[0040] Add the base material of component A into the reaction kettle at room temperature, stir at 300-400r / Min, raise the temperature to 70°C, add 1 / 4 of the initiator solution of component C, and keep warm for 30 minutes for copolymerization;

[0041] Stir component B in the pre-emulsification tank for 15 minutes to make a pre-emulsification monomer at a speed of 300r / min;

[0042] Raise the temperature and control the temperature at 81°C, add the pre-emulsified monomer and the remaining C component initiator solution dropwise into the reaction kettle equipped with the base material of A component at the same time, finish adding dropwise in 3 hours, and continue the insulation and copolymerization for 1 hour ;

[0043] Cool down to 60°C, add ammonia water, adjust the pH to 7-8, cool down to below 45°C, filter and discharge to prepare acrylic acid copolymer...

Embodiment 2

[0058] A kind of water-based ink, comprises the component of following mass fraction:

[0059]

[0060] It is characterized in that it also includes the acrylic acid copolymer emulsion in the above embodiment 1, the mass fraction of the acrylic acid copolymer emulsion is 40.5%, and the film-forming aid is composed of diethylene glycol with a mass fraction of 1%-5%. Alcohol ether and mass fraction are 2%-10% dipropylene glycol butyl ether composition, in the present embodiment, the mass fraction of described diethylene glycol ether is 5%, and the mass fraction of described dipropylene glycol butyl ether is 9% , the defoamer is composed of 0.2% TEGO 902W and 0.2% TEGO 904W by mass fraction, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizer It is dimethylethanolamine, the thickener is PS 166, and the matting powder is OK500.

Embodiment 3

[0062] A kind of water-based ink, comprises the component of following mass fraction:

[0063]

[0064]

[0065] It is characterized in that it also includes the acrylic acid copolymer emulsion in the above-mentioned embodiment 1, the mass fraction of the acrylic acid copolymer emulsion is 45.5%, and the film-forming aid is composed of diethylene glycol with a mass fraction of 1%-5%. Alcohol ether and mass fraction are 2%-10% dipropylene glycol butyl ether composition, in the present embodiment, the mass fraction of described diethylene glycol ether is 5%, and the mass fraction of described dipropylene glycol butyl ether is 9% , the defoamer is composed of 0.2% TEGO 902W and 0.2% TEGO 904W by mass fraction, the leveling agent is BYK-333, the wetting agent is TEGO 4100, the neutralizer It is dimethylethanolamine, the thickener is PS 166, and the matting powder is OK500.

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