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Alkyd acrylic hybrid latex paint and preparation method thereof

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

Inactive Publication Date: 2014-08-06
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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  • Alkyd acrylic hybrid latex paint and preparation method thereof
  • Alkyd acrylic hybrid latex paint and preparation method thereof
  • Alkyd acrylic hybrid latex paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1. The preparation of alkyd resin

[0038] In a 500ml four-necked flask equipped with a stirring device, an oil-water separator and a thermometer, 60g of soyoleic acid, 17.54g of pentaerythritol, and 1.65g of benzoic acid were successively added, protected by nitrogen gas, stirring and condensed water were started, and the temperature was raised to 180°C within 1h (wherein When the temperature reaches 120°C, add 3g xylene); when the temperature reaches 180°C, start to keep warm, keep warm for 40min, and control the temperature at 180-200°C; add 8.27g phthalic anhydride, 0.27g maleic anhydride and 5.46g di Toluene, after 10 minutes, add the remaining 8.27g phthalic anhydride and 0.27g maleic anhydride; raise the temperature to control the temperature at 210-220°C, keep it for 1h; continue to raise the temperature to control the temperature at 220-230°C, keep it for 1h Start to measure the acid value; when the acid value is less than 17mgKOH / g, start to cool do...

Embodiment 2

[0039] Embodiment 2. Preparation of drier

[0040] Dissolve 8.33g of emulsifier CO-436 in 88.89g of deionized water, add 2.78g of ethylene glycol, 5.56g of cobalt isooctanoate, 22.22g of manganese isooctanoate, and 22.22g of zirconium isooctanoate, disperse at a high speed of 1500r / mim, and stir for 2 hours. Available as a drier for alkyd acrylic hybrid emulsion.

Embodiment 3

[0041] Example 3. Preparation of Alkyd Acrylic Hybrid Emulsion

[0042] Dissolve 9.6g of alkyd resin in 0.9g of acrylic acid, 10.7g of methyl methacrylate, 10g of styrene, and 15.6g of butyl acrylate mixed monomer for use; , Dissolve 0.18g of sodium bicarbonate in 36g of deionized water, add the mixed monomer dissolved in alkyd resin and stir at 2000r / min for 30min to pre-emulsify; dissolve 0.36g of CO-436 in 18g of deionized water and put it into a stirring device, In a 250ml three-necked flask with a spherical condenser and a thermometer, start stirring at 200r / min and condensate water, raise the temperature to 75°C, add an initiator (0.24g ammonium persulfate + 6g deionized water); when the temperature reaches 78°C, pre-emulsify Put the liquid into a 100ml constant pressure dropping funnel, and start to drop it from the upper end of the condenser tube. After about 3 hours, keep the temperature at 78-80°C; h; cool down to 60°C, add 1.2g of film-forming aid lauryl alcohol es...

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Abstract

Alkyd acrylic hybrid latex paint and its preparation method, first synthesize the alkyd resin with unsaturated double bonds in the main chain of the polymer through molecular design, and then carry out core-shell emulsion polymerization with acrylic monomer, with the alkyd resin as the core, The acrylic resin is the shell, and 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, deionized water, pigments, fillers , defoamer, dispersant, drier and alkyd acrylic hybrid emulsion are uniformly dispersed to prepare alkyd acrylic hybrid latex paint. The paint formula is: alkyd acrylic hybrid emulsion 65%~80%, pigment 3%~4%, filler 6~10%, deionized water 10%~20%, dispersant 0.05-0.5%, defoamer 0.10% ~0.30%, driers 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): C09D151/08C09D7/12C08F283/01C08F220/18C08F220/14C08F212/08C08F220/06C08G63/52C08G63/49
Inventor 郭军红杨保平崔锦峰周应萍李延华李军吴纯魏小赟倾彩霞崔卓陈碧碧
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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