Epoxy acrylate modified waterborne alkyd resin and preparation method and application thereof

A technology of water-based alkyd resin and epoxy acrylate, which is applied in coatings, anti-corrosion coatings, etc., can solve problems such as coating film performance, and achieve the effects of improving water resistance, good dryness, and good weather resistance

Inactive Publication Date: 2014-10-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem of coating film performance caused by the above-mentioned alkyd resin in the water-based process, and provides a water-based alkyd resin double-modified with epoxy resin and acrylic resin and its preparation method

Method used

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  • Epoxy acrylate modified waterborne alkyd resin and preparation method and application thereof
  • Epoxy acrylate modified waterborne alkyd resin and preparation method and application thereof
  • Epoxy acrylate modified waterborne alkyd resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 50.05g of linseed oil and 10.94g of glycerol into a four-necked flask equipped with a stirrer, thermometer and water separator, heat to 120°C with an electric heating mantle, add 0.1g of alcoholysis catalyst LiOH, continue to heat up to 240°C, and keep the reaction After the tolerance of ethanol reaches 5ml / ml, cool down to 180°C; add 29.5g of phthalic anhydride, 0.82g of maleic anhydride, 3.86g of diethylene glycol and reflux 3g of xylene to the flask and keep warm at 180°C until the acid The value reaches 20mg KOH / g; cool down to 200°C, add 7.35g of epoxy resin E44 to continue the reaction until the acid value is lower than 10mg KOH / g; cool down to 120°C, add 15g of n-butanol, add 3.03g dropwise within 2 hours at a constant speed Styrene, a mixture of 6.05g methyl methacrylate, 7.42g methacrylic acid, 3.03g butyl acrylate, and 0.8g initiator. The dropping rate is 0.17g / min. Add 0.18g of the remaining initiator directly to the head dropper at one time, and continue...

Embodiment 2

[0049] Add 50.05g of tung oil and 11g of glycerin into a four-necked flask equipped with a stirrer, a thermometer and a water separator, heat it to 120°C with an electric heating mantle, add 0.1g of alcoholysis catalyst LiOH, continue to heat up to 240°C, and keep the reaction to ethanol After the tolerance reaches 2.7ml / ml, cool down to 180°C; add 29.8g of phthalic anhydride, 0.46g of maleic anhydride, 4.0g of diethylene glycol and reflux 5g of xylene to the flask and keep the reaction at 180°C until the acid value up to 40mg KOH / g; cool down to 200°C, add 7.36g epoxy resin E44 to continue the reaction until the acid value is lower than 10mg KOH / g; cool down to 120°C, add 15g n-butanol, add 3.57g benzene dropwise within 2 hours at a constant speed A mixture of ethylene, 7.15g methyl methacrylate, 5.22g methacrylic acid, 3.57g butyl acrylate, and 0.9g initiator, with a dropping rate of 0.17g / min. Add 0.25g of the remaining initiator directly to the dropper at one time, and kee...

Embodiment 3

[0052]Put 68.6g of soybean oil and 15g of glycerin into a four-neck flask equipped with a stirrer, thermometer and water separator, heat it to 120°C with an electric heating mantle, add 0.1g of alcoholysis catalyst LiOH, continue to heat up to 240°C, and keep the reaction until the ethanol After the tolerance reaches 5ml / ml, cool down to 180°C; add 40.86g of phthalic anhydride, 0.61g of maleic anhydride, 5.3g of diethylene glycol and reflux 3g of xylene to the flask and keep the reaction at 180°C until the acid value reaches 20mg KOH / g; cool down to 200°C, add 10.3g epoxy resin E20 to continue the reaction until the acid value is lower than 10mg KOH / g; cool down to 120°C, add 15g n-butanol, add 3.7g styrene dropwise within 2 hours at a constant speed , a mixture of 7.3g methyl methacrylate, 16.2g methacrylic acid, 3.7g butyl acrylate, and 1.6g initiator. The dropping rate is 0.17g / min. Add 0.18g of remaining initiator directly to the tube at one time, keep warm until the total...

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Abstract

The invention discloses an epoxy acrylate modified waterborne alkyd resin and a preparation method and an application thereof. The method comprises the steps: firstly, synthesizing a waterborne alkyd resin from a polyol, a polybasic acid and an oil monomer by adopting a dehydration condensation reaction; then carrying out an epoxy resin ring opening reaction to graft onto the waterborne alkyd resin so as to modify the waterborne alkyd resin; followed by carrying out free radical solution polymerization of acrylic soft and hard monomers with the modified alkyd resin, and modifying the alkyd resin by using acrylic ester; and finally pumping out a part of a polymerization solvent to neutralize the obtained waterborne alkyd resin, adding a cosolvent, and dispersing the alkyd resin to prepare an aqueous dispersion by adopting a high-speed disk dispersion machine and with water as a dispersion medium. In the addition to retaining own excellent characteristics, the modified alkyd resin also has good dryness, adhesive power and corrosion resistance of epoxy resin and the acrylic resin advantages of excellent drying, water resistance, chemical medicine resistance, high hardness, good weathering resistance and the like, and effectively improves the alkyd resin performance of water resistance, weather resistance and the like.

Description

technical field [0001] The invention relates to a water-based alkyd resin, in particular to a water-based alkyd resin modified by epoxy acrylate, a preparation method thereof and an application as an aqueous dispersion, belonging to the technical field of functional environmental protection coatings. Background technique [0002] With the enhancement of people's awareness of environmental protection and the continuous improvement of laws, water-based coatings have become the main direction of coating development. Because alkyd resin has the advantages of bright, plump paint film, good adhesion, easy to obtain raw materials, cheap price, and easy construction, it is widely used in the coating industry. In order to respond to the requirements of today's society for environmental protection, it is of great significance to realize the water-based alkyd resin and produce environmentally friendly and low-toxic water-based alkyd resin coatings. At present, although my country's wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/91C08G63/676C09D151/08C09D5/08
Inventor 涂伟萍袁腾赵韬周显宏王锋胡剑青
Owner SOUTH CHINA UNIV OF TECH
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