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Aqueous alkyd acrylic resin paint and preparation method thereof

An alkyd acrylic and resin coating technology, applied in the direction of coating, can solve problems such as material performance deterioration, and achieve the effects of reduced VOC) content, good weather resistance and good color retention

Inactive Publication Date: 2014-07-16
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the resin has poor compatibility due to differences in molecular weight or functional group structure, although it can be uniformly dispersed under the action of a solvent, during the curing and molding process, as the amount of solvent in the system decreases, different types of resins will show phase separation. material performance deterioration

Method used

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  • Aqueous alkyd acrylic resin paint and preparation method thereof
  • Aqueous alkyd acrylic resin paint and preparation method thereof
  • Aqueous alkyd acrylic resin paint and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0029] The preparation method of water-based alkyd acrylic resin coating, the above-mentioned components are mixed, and the steps are:

[0030] The preparation steps of alkyd resin are:

[0031] (1) Add soybean oil acid, pentaerythritol, and benzoic acid to a reaction vessel equipped with a stirring device, an oil-water separator and a thermometer according to the formula, pass nitrogen protection, turn on stirring and condensate, and heat up to 180°C within 1 hour;

[0032] (2) When the temperature reaches 120℃, add 35%~40% xylene of formula;

[0033] (3) When the temperature reaches 180℃, start the heat preservation, keep it for 40min, and control the temperature at 180~200℃; add 1 / 2 of the formula amount of phthalic anhydride and maleic anhydride and the remaining xylene, add the remaining xylene after 10min Phthalic anhydride and maleic anhydride; increase the temperature so that the temperature is controlled at 210~220℃, keep for 1h;

[0034] (4) Increase the temperature so that t...

Embodiment 1

[0058] Example 1. Preparation of alkyd resin

[0059] Into a 500ml four-necked flask equipped with a stirring device, an oil-water separator and a thermometer, 60g soya oil, 17.54g pentaerythritol, and 1.65g benzoic acid were sequentially added, protected by nitrogen, stirred and condensed, and heated to 180℃ within 1h (where When the temperature reaches 120 ℃, add 3g xylene); when the temperature reaches 180 ℃, start to keep the temperature, keep the temperature for 40 minutes, and control the temperature at 180~200 ℃; add 8.27g phthalic anhydride, 0.27g maleic anhydride and 5.46g two Toluene, add the remaining 8.27g phthalic anhydride and 0.27g maleic anhydride after 10min; increase the temperature to control the temperature at 210~220℃, keep it for 1h; continue to increase the temperature to control the temperature at 220~230℃, keep it for 1h Start measuring acid value; when acid value When <17mgKOH / g, start to cool down, cool down to 180°C, release the water and xylene in the...

Embodiment 2

[0060] Example 2. Preparation of drier

[0061] Dissolve 8.33g emulsifier CO-436 in 88.89g water, add 2.78g ethylene glycol, 5.56g cobalt isooctanoate, 22.22g manganese isooctanoate, 22.22g zirconium isooctanoate, disperse at high speed 1500r / mim, stir for 2h to get Drier for alkyd acrylic hybrid emulsion.

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Abstract

The water-based alkyd acrylic resin coating and its preparation method, synthesize alkyd resin with unsaturated double bonds in the main chain of the polymer through molecular design, carry out free radical copolymerization with acrylic acid monomers, neutralize the reaction system with amine compounds, and synthesize Water-dilutable alkyd acrylic resin, the alkyd and acrylic resin molecular chains are connected by chemical bonds, which improves the compatibility of the two resins and avoids phase separation of the resin during the curing and molding process of the material. Finally, the deionized water, pigment, filler, defoamer, dispersant, drier and alkyd-acrylic hybrid emulsion are uniformly dispersed to prepare the water-based alkyd-acrylic resin coating. The formula of water-based alkyd acrylic resin coating is: water-based alkyd acrylic resin 65%~80%, pigment 3%~4%, filler 6~10%, deionized water 10%~20%, dispersant 0.05~0.5%, disinfectant Foaming agent 0.10%~0.30%, drier 0.9%~3.5%.

Description

technical field [0001] The invention relates to polymer chemistry and polymer coating composition technology. Background technique [0002] Most of the polymers used in traditional coating inks are solvent-based, and the main varieties are: alkyd resin, acrylic resin, phenolic resin, epoxy resin, polyurethane resin, amino resin and their mutual modification. These resins will use a large amount of organic solvents in the application of late coating inks and in the construction process. These solvents will volatilize into the atmosphere during construction and material curing, which is harmful to the health of construction workers, pollutes the environment, and causes energy waste. With the increasing awareness of environmental protection in various countries around the world, the restrictions on the content of volatile organic compounds (VOC) in coatings are becoming increasingly strict in environmental protection regulations, and the coatings industry is developing towards...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D7/12C08F283/01C08F220/18C08F220/28C08F212/08C08F220/14C08F220/06C08G63/52C08G63/49
Inventor 崔锦峰李军杨保平郭军红周应萍李延华吴纯陈碧碧倾彩霞崔卓魏小赟
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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