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Preparation method of styrene-acrylic emulsion for water-borne wood paint

A water-based wood paint, styrene-acrylic emulsion technology, applied in the direction of coating, can solve the problems of uneven composition of latex particles, wide particle size distribution, etc.

Pending Publication Date: 2021-12-03
TAIZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since 2015, with the implementation of the new environmental protection law, the collection of paint consumption tax and the introduction of environmental protection regulations such as VOC emission standards in the furniture manufacturing industry, water-based wood coatings have become a leading player in the current coatings industry market due to their low VOC emissions. It has been developed rapidly. Water-based wood paints are compounded with acrylic emulsions prepared by traditional emulsion polymerization methods. The latex particles obtained in this way are not uniform in composition and wide in particle size distribution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) The first stage of the preparation of fine seed emulsion polymerization.

[0027] 0.8 kg of ammonium persulfate dissolved in 10 kg of deionized water was formulated with 10.8 kg miniemulsion polymerization initiator 1;

[0028] Autoclave, 336.7 kg of deionized water, followed by addition of 0.5 kg and 0.5 kg AqualonHS-20 KL-100-Ⅲ After stirring dispersion, to obtain an emulsifier solution;

[0029] The 3 kg of methyl methacrylate, 20 kg of styrene, 18 kg n-butyl methacrylate, 2 kg of hydroxyethyl acrylate, 0.5 kg of methacrylic acid, 4 kg epoxy diacrylate, 2 kg costabilizer ten inositol, mixed stirred for 20 minutes, then added to the emulsifier solution in the reactor described above, high-speed stirring emulsification for 40 minutes.

[0030] 2) To the reaction vessel was added 10.8 kg -1 initiator solution, the reactor was warmed to 70 degrees, until the system became blue after the temperature rose to 80 degrees, reaction was continued for 30 minutes;

[0031] 3) Sec...

Embodiment 2

[0038] 1) The first stage of the preparation of fine seed emulsion polymerization.

[0039] 0.8 kg of ammonium persulfate dissolved in 10 kg of deionized water was formulated with 10.8 kg miniemulsion polymerization initiator 1;

[0040] Autoclave, 330.6 kg of deionized water, followed by addition of 0.8 kg and 0.2 kg AqualonHS-20 KL-100-Ⅲ After stirring dispersion, to obtain an emulsifier solution;

[0041] The four kilograms of methyl methacrylate, 22 kg of styrene, n-butyl methacrylate, 19 kg, 3 kg of hydroxyethyl acrylate, 0.6 kg of methacrylic acid, 5 kg epoxy diacrylate, 2 kg costabilizer ten hexadecane and mixed to give a mixed monomer-1, mixed for 20 minutes, then added to the emulsifier solution in the reactor, a high speed stirring emulsification for 40 minutes.

[0042] 2) To the reaction vessel was added 10.8 kg -1 initiator solution, the reactor was warmed to 70 degrees, until the system became blue after the temperature rose to 80 degrees, reaction was continued for ...

Embodiment 3

[0048] Example Three Total = 1000kg

[0049] 1) The first stage of the emulsion preparation of the seed miniemulsion

[0050] 0.8 kg of ammonium persulfate dissolved in 10 kg of deionized water was formulated with 10.8 kg miniemulsion polymerization initiator 1;

[0051] Autoclave, 323.5 kg of deionized water, followed by addition of 0.6 kg and 0.4 kg AqualonHS-20 KL-100-Ⅲ After stirring dispersion, to obtain an emulsifier solution;

[0052] 5 kg of methyl methacrylate, 24 kg of styrene, 20 kg n-butyl methacrylate, 4 kg of hydroxyethyl acrylate, 0.7 kg of methacrylic acid, 6 kg epoxy diacrylate, 3 kg costabilizer ten inositol and mixed to give a mixed monomer-1, mixed for 20 minutes, then added to the emulsifier solution in the reactor described above, high-speed stirring emulsification for 40 minutes.

[0053] 2) To the reaction kettle was added 10.8 kg -1 initiator solution, the reactor was warmed to 70 degrees, until the system became blue after the temperature rose to 80 degre...

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Abstract

The invention discloses a preparation method of a styrene-acrylic emulsion for water-borne wood paint. The method comprises the following steps: firstly, preparing a styrene-acrylic seed emulsion with uniform particle size distribution through miniemulsion polymerization, and then polymerizing a layer of room-temperature self-crosslinking hard shell. The styrene-acrylic emulsion specifically comprises deionized water, an initiator, a co-stabilizer, an emulsifier, styrene, butyl acrylate, methyl methacrylate, hydroxyethyl acrylate and the like, and a proper amount of bi-crosslinking functional monomer is added to modify the styrene-acrylic emulsion. The obtained product has the characteristics of uniform particle size distribution, high transparency, good grindability, good hardness and good tolerance, and is suitable for single-component or double-component wood lacquer.

Description

Technical field [0001] The present invention relates to the field of synthetically produced polymer materials, which can be obtained high-performance acrylic emulsion, applied to the field of waterborne wood. Background technique [0002] In a typical emulsion polymerization system, a small amount of monomer dissolved in the aqueous phase, there are two other monomers in the form of droplets and solubilizing emulsifier micelles. A micelle is much larger than the number of the number system of the monomer droplets, the polymerization initiator in the monomer is first solubilized in micelles, acts as a monomer and the monomer droplets library, continue to add monomer micelles consumed, until it disappears . Since the monomers must be increased via a Sol beam spread to the continuous phase, the latex particle growth is actually a kinetically controlled process, which brings the type of comonomer is limited, the final latex particles resulting uneven composition, wide particle size d...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F212/08C08F220/14C08F220/06C08F220/20C08F222/20C08F2/26C08F2/30C09D133/08
CPCC08F220/1804C08F2/26C08F2/30C09D133/066C08F212/08C08F220/14C08F220/06C08F220/20C08F222/20
Inventor 刘维均郑启伦赵松林何志才武承林郑恩方张艳岭郑凌峰
Owner TAIZHOU UNIV
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