Aqueous alkyd acrylic resin paint and preparation method thereof

A technology of alkyd acrylic and resin coatings, applied in the direction of coating, etc., can solve the problems of material performance deterioration and achieve the effects of reduced VOC content, good color retention, and good weather resistance

Inactive Publication Date: 2012-10-24
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,

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
Comparison scheme
Effect test

Example Embodiment

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

[0030] The preparation steps of alkyd resin are:

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

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

[0033] (3) When the temperature reaches 180 ℃, the temperature is kept warm for 40 minutes, and the temperature is controlled at 180-200 ℃; 1 / 2 of the formula amount of phthalic anhydride and maleic anhydride and the remaining xylene are added, and the remaining phthalic anhydride and maleic anhydride are added after 10 minutes; Control at 210 ~ 220 ℃, keep warm for 1h;

[0034] (4) Increase the temperatur...

Example Embodiment

[0058] Example 1. Preparation of Alkyd Resin

[0059] In a 500ml four-necked flask equipped with a stirring device, an oil-water separator and a thermometer, add 60g soy oleic acid, 17.54g pentaerythritol, 1.65g benzoic acid successively, pass nitrogen protection, open stirring and condensed water, and be heated to 180°C in 1h (wherein When the temperature reaches 120°C, add 3g of xylene); when the temperature reaches 180°C, the temperature is kept warm for 40 minutes, and the temperature is controlled at 180-200°C; 8.27g of phthalic anhydride, 0.27g of maleic anhydride and 5.46g of xylene are added, and after 10 minutes, the remaining 8.27g phthalic anhydride and 0.27g maleic anhydride; heat up to control the temperature at 210-220°C, hold for 1 hour; continue to heat up to control the temperature at 220-230°C, and start to measure the acid value after holding for 1 hour; start when the acid value is less than 17mgKOH / g Cool down, cool down to 180°C, release water and xylene ...

Example Embodiment

[0060] Example 2. Preparation of drier

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

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Abstract

The invention relates to an aqueous alkyd acrylic resin paint and a preparation method thereof. According to the invention, high-molecular alkyd resin with main chain containing unsaturated double bond is synthesized through molecular design. Alkyd resin is subjected to free radical graft copolymerization with acrylic monomer. A reaction system is neutralized by using an amine compound, such that water-reducible alkyd acrylic resin is synthesized. Molecular chains of alkyd and acrylic resins are connected through chemical bond, such that the compatibility of the two resins is improved. In a material curing and shaping process, phase separation of the resin is avoided. Deionized water, a pigment, a filling material, an antifoaming agent, a dispersing agent, a siccative, and alkyd acrylic hybrid emulsion are uniformly dispersed, such that the aqueous alkyd acrylic resin paint is obtained. The aqueous alkyd acrylic resin paint comprises the components of: aqueous alkyd acrylic resin 65%-80%, the pigment 3%-4%, the filling material 6-10%, deionized water 10%-20%, the dispersing agent 0.05%-0.5%, the antifoaming agent 0.10%-0.30%, and the siccative 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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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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