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Aqueous alkyd acrylic resin and preparation method thereof

An alkyd acrylic and alkyd resin technology, used in applications, coatings, inks, etc., 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: 2013-12-18
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 and preparation method thereof
  • Aqueous alkyd acrylic resin and preparation method thereof
  • Aqueous alkyd acrylic resin and preparation method thereof

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preparation example Construction

[0021] The preparation method of water-based alkyd acrylic resin, carries out batching according to above-mentioned components, and its steps are: the preparation step of alkyd resin is:

[0022] (1) Add soyoleic acid, pentaerythritol, and benzoic acid in sequence according to the formula in a reaction vessel equipped with a stirring device, an oil-water separator, and a thermometer, protect with nitrogen, start stirring and condense water, and heat up to 180°C within 1 hour;

[0023] (2) When the temperature reaches 120°C, add 35%~40% xylene;

[0024] (3) When the temperature reaches 180°C, start to keep warm for 40 minutes, and the temperature is controlled at 180-200°C; add 1 / 2 of the formula amount of phthalic anhydride and maleic anhydride and the remaining xylene, and add the remaining phthalic anhydride and maleic anhydride after 10 minutes;

[0025] (4) Raise the temperature to control the temperature at 210-220°C, and keep it for 1 hour; raise the temperature to contr...

Embodiment 1

[0041] Embodiment 1. The preparation of alkyd resin

[0042] 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 of xylene); when the temperature reaches 180°C, start to keep warm, keep the heat for 40 minutes, and control the temperature at 180-200°C; add 8.27g of phthalic anhydride, 0.27g of maleic anhydride and 5.46g of xylene, and add the rest after 10 minutes 8.27g phthalic anhydride and 0.27g maleic anhydride; raise the temperature to control the temperature at 210-220°C, and keep it for 1 hour; continue to raise the temperature to control the temperature at 220-230°C, and start measuring the acid value after holding it for 1 hour; start when the acid va...

Embodiment 2

[0043] Embodiment 2. Preparation of water-based alkyd acrylic resin

[0044] Dissolve 9.6g of alkyd resin in 0.9g of acrylic acid, 10.7g of methyl methacrylate, 10g of styrene, 15.6g of butyl acrylate, and 2.0g of methacrylic acid-β-hydroxyethyl ester mixed monomer for use. Add 4.5g of xylene and 10.5g of n-butanol to a 250ml three-necked flask with a stirring device, a spherical condenser, and a thermometer, blow nitrogen, and stir at 200r / min and condensed water, raise the temperature to 80°C, add 0.24g of initiator and Mix the monomers, drop them in about 3 hours, keep the temperature at 78-80°C, react for 5 hours, measure the acid value of the resin to 40-60 mgKoH / g, add 10 g of ethylene glycol butyl ether, and use 0.5 g of N, N-dimethylethanolamine and the reaction system were diluted with 30.0 g of distilled water, cooled to 30°C, and discharged.

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Abstract

The invention discloses an aqueous alkyd acrylic resin and a preparation method thereof. The preparation method comprises that an alkyd resin of which a polymer main chain contains an unsaturated double-bond is synthesized according to a molecule design; and the alkyd resin and an acrylic acid monomer undergo a radical copolymerization reaction in an amine compound neutralization reaction system to produce the aqueous alkyd acrylic resin which can be diluted by water. Through chemical bond connection between alcohol acid and acrylic resin molecular chains, resin compatibility is improved and resin phase separation is avoided in material curing. The aqueous alkyd acrylic resin comprises 0.7-0.9% of acrylic acid, 8.1-10.7% of methyl methacrylate, 7.6-10.0% of styrene, 11.8-15.6% of butyl acrylate, 2.0-10.0% of beta-hydroxyethyl methacrylate, 9.0-19.0% of alkyd resin, 4.05-4.95% of xylene, 9.45-11.55% of n-butyl alcohol, 0.18-0.24% of an initiator, 0.45-0.55% of N,N-dimethyl ethanolamine, 9-11% of ethylene glycol butyl ether and 27.0-33.0% of distilled water.

Description

technical field [0001] The present invention relates to polymer chemistry and polymer 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 low polluti...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F220/06C08F220/14C08F212/08C08F220/18C08F220/28C08G63/52C08G63/49C09D11/00C09D151/08
Inventor 崔锦峰陈碧碧杨保平郭军红周应萍李延华吴纯崔卓李军魏小赟倾彩霞
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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