Water-based color-showing resin emulsion, preparation method and applied coating composition

A coating composition, resin emulsion technology, applied in the direction of coating, can solve the problems of adverse effects of construction and use environment, price increase, non-competitiveness, etc., to improve film-forming defects, reduce dosage, compatibility Good results

Active Publication Date: 2014-04-23
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price is acceptable in the ink industry, but it is not competitive when applied to other coatings
In addition, it uses ammonia water as an alkaline solvent, which has caused adverse effects on the construction and use environment.
[0006] There are two RS733 and RS733A coating resins widely used in colored coatings on the market, which have achieved good color development performance. The disadvantage is that additives are used to improve color development performance, and the original price of the product is affected by the market. , making it highly likely to be replaced by other products

Method used

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  • Water-based color-showing resin emulsion, preparation method and applied coating composition
  • Water-based color-showing resin emulsion, preparation method and applied coating composition
  • Water-based color-showing resin emulsion, preparation method and applied coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Add 290g ethyl acetate, 40g methyl methacrylate, 15g n-butyl acrylate, 15g n-butyl methacrylate, 26g isooctyl acrylate and 4g of dimethylaminoethyl methacrylate, mixed well, heated up to 55°C, added 10g of 0.5wt% azobisisobutyronitrile-ethyl acetate solution, and reacted for 3h;

[0051] (2) Lower the system 1 to room temperature, add 2.5g of methacrylic acid, and stir for 0.5h;

[0052] (3) Use a vacuum pump to extract the solvent at 65°C. When the extracted solvent is between 100 and 170g, remove the vacuum device and stir at a high speed (high-speed stirring is based on the ability to completely and evenly disperse the prepolymer in water) Add 300g of water to obtain a water dispersion, and continue to use a vacuum pump to extract the remaining solvent;

[0053] (4) Use 15g of n-butyl acrylate and 15g of n-butyl methacrylate to swell the water dispersion in system 3;

[0054] (5) Use system 4 as the seed emulsion, add 10g of 1wt% ammonium persulfate aqueous sol...

Embodiment 2

[0059] (1) Add 290g ethyl acetate, 60g methyl methacrylate, 10g n-butyl acrylate, 10g n-butyl methacrylate, 16g isooctyl acrylate and 4g of dimethylaminoethyl methacrylate, mixed well, heated up to 55°C, added 0.5wt% azobisisobutyronitrile-ethyl acetate, 10g, and reacted for 3h;

[0060] (2) Cool system 1 to room temperature, add 1.85g of acrylic acid, and stir for 0.5h;

[0061] (3) Use a vacuum pump to extract the solvent at 65°C. When the extracted solvent is between 100 and 170g, remove the vacuum device and stir at a high speed (high-speed stirring is based on the ability to completely and evenly disperse the prepolymer in water) Add 300g of water to obtain a water dispersion, and continue to use a vacuum pump to extract the remaining solvent;

[0062] (4) Use 5g of n-butyl acrylate and 25g of n-butyl methacrylate to swell the water dispersion in system 3;

[0063] (5) Use system 4 as the seed emulsion, add 10g of 1wt% ammonium persulfate aqueous solution, raise the tem...

Embodiment 3

[0068] (1) Add 290g ethyl acetate, 10g methyl methacrylate, 40g n-butyl acrylate, 40g n-butyl methacrylate, 6g isooctyl acrylate and 4g of dimethylaminoethyl methacrylate, mixed well, heated up to 55°C, added 0.5wt% azobisisobutyronitrile-ethyl acetate, 10g, and reacted for 3h;

[0069] (2) Cool system 1 to room temperature, add 1.85g of acrylic acid, and stir for 0.5h;

[0070] (3) Use a vacuum pump to extract the solvent at 65°C. When the extracted solvent is between 100 and 170g, remove the vacuum device and stir at a high speed (high-speed stirring is based on the ability to completely and evenly disperse the prepolymer in water) Add 300g of water to obtain a water dispersion, and continue to use a vacuum pump to extract the remaining solvent;

[0071] (4) Use 30g of the aqueous dispersion in n-butyl acrylate swelling system 3;

[0072] (5) Use system 4 as the seed emulsion, add 10g of 1wt% ammonium persulfate aqueous solution, raise the temperature to 80°C, and react fo...

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Abstract

The invention discloses a water-based color-showing resin emulsion and a preparation method thereof. The preparation method comprises the steps: preparing a cationic water-based acrylate dispersion through solution polymerization, neutralization and dispersing; and then swelling the dispersion for a certain time by using a defined amount of acrylic ester monomer so as to be used as a seed, and dropwise adding an initiator and the acrylate monomer emulsified by a micromolecule emulsifying agent for performing free radical polymerization so as to prepare a target product. The prepared water-based color-showing resin emulsion disclosed by the invention can be applied to a coating with high requirement of the color-showing property, and is better in color-showing property and lower in production cost.

Description

technical field [0001] The invention relates to the technical field of coating resin materials, in particular to a low-cost and good color-developing water-based resin emulsion, a preparation method thereof, and a coating composition containing the water-based color-developing resin emulsion. Background technique [0002] The color development performance of the resin refers to the color filler (including white, black and other color powder or color paste, etc.) added to the resin. When the ounce value is 1, it is called 1NBS. The smaller the ΔE, the better the color development performance, and vice versa; the color development resin refers to the resin with excellent color development performance, and the color difference ΔE<0.5 or less. All coatings related to color have certain requirements on the color development performance of the resin, and high-end coatings often require good color development performance of the resin. [0003] At present, in the synthesis techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/34C08F220/06C08F2/26C08F2/30C09D133/12C09D133/08C09D133/10C09D7/12
Inventor 许迁丁清华
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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