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Aqueous epoxy modified alkyd resin and preparation method and application thereof

A water-based epoxy and alkyd resin technology, used in coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of inconspicuous results and few discussions on chemical modification of water-soluble alkyd resins. Strong adhesion, high hardness, and the effect of improving stability

Active Publication Date: 2012-10-31
西北永新涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many discussions on the chemical modification of water-soluble alkyd resins, and the results are not obvious.

Method used

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  • Aqueous epoxy modified alkyd resin and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1. Formula of waterborne epoxy modified alkyd resin

[0050] The water-based epoxy modified alkyd resin is prepared from the following raw materials: 270g of linseed oil fatty acid, 100g of epoxy resin, 40mg of zinc oxide, 60g of benzoic acid, 110g of pentaerythritol, 100g of phthalic anhydride, 50g of trimellitic anhydride, Maleic anhydride oil 50g, ethylene glycol monobutyl ether 260g. Maleic anhydride oil is prepared by mixing 9g of maleic anhydride with 41g of flax oil.

[0051] 2. Preparation method of water-based epoxy modified alkyd resin

[0052] ①Add 270g of linseed oil fatty acid and 100g of epoxy resin into the reaction kettle, start stirring, and raise the temperature to 120°C under stirring; after stopping stirring, add 40mg of zinc oxide, continue stirring, raise the temperature to 180°C, and keep the esterification reaction for 2.5h .

[0053] ②Add 60g of benzoic acid, 100g of phthalic anhydride, 110g of pentaerythritol and 20g of xylene in the reactio...

Embodiment 2

[0061] 1. Formula of waterborne epoxy modified alkyd resin

[0062] Water-based epoxy-modified alkyd resin is prepared from the following raw materials: 280g of sesame oil, 90g of epoxy resin, 27mg of zinc oxide, 50g of benzoic acid, 130g of trimethylolpropane, 80g of maleic anhydride, and 60g of trimellitic anhydride , maleic anhydride oil 40g, ethylene glycol monobutyl ether 280g. Maleic anhydride oil is prepared by mixing 6g of maleic anhydride and 34g of linseed oil.

[0063] 2. Preparation method of water-based epoxy modified alkyd resin

[0064] ①Add 280g of flax oil and 90g of epoxy resin into the reaction kettle, start stirring, and raise the temperature to 115°C under stirring; after stopping the stirring, add 27mg of zinc oxide, continue stirring, raise the temperature to 175°C, and keep the esterification reaction for 2.2h.

[0065] ②Add 50g of benzoic acid, 80g of maleic anhydride, 130g of trimethylolpropane and 25g of xylene into the reaction kettle. The reacti...

Embodiment 3

[0073] 1. Formula of waterborne epoxy modified alkyd resin

[0074] The water-based epoxy modified alkyd resin is prepared from the following raw materials: 290g of linseed oil fatty acid, 110g of epoxy resin, 58mg of zinc oxide, 55g of benzoic acid, 120g of pentaerythritol, 90g of isophthalic acid, 40g of trimellitic anhydride, 60 g of anhydride oil and 250 g of ethylene glycol monobutyl ether. Maleic anhydride oil is prepared by mixing 12g of maleic anhydride and 48g of flax oil.

[0075] 2. Preparation method of water-based epoxy modified alkyd resin

[0076] ①Add 290g of linseed oil fatty acid and 110g of epoxy resin into the reaction kettle, start stirring, and raise the temperature to 125°C under stirring; after stopping stirring, add 58mg of zinc oxide, continue stirring, raise the temperature to 185°C, and keep the esterification reaction for 2.0h .

[0077] ②Add 55g of benzoic acid, 90g of isophthalic acid, 120g of pentaerythritol and 30g of xylene into the reactio...

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Abstract

The invention discloses an aqueous epoxy modified alkyd resin and a preparation method thereof, and belongs to the chemical technology field. According to the aqueous epoxy modified alkyd resin, an epoxy resin serves as a modified material, an epoxy ester is synthesized through the reaction of the epoxy resin and a fatty acid, and the aqueous epoxy modified alkyd resin with good mechanical properties, water solubility, stabilities and rot resistance is synthesized through ester exchange of the epoxy ester and the alkyd resin. The aqueous epoxy modified alkyd resin is applied in aqueous industrial anticorrosion coatings, the manufactured aqueous industrial anticorrosion coatings have high adhesive force and hardness, good impact resistance and the like, no solvent exists in an aqueous industrial anticorrosion coating system, the discharge amount of volatile organic compounds (VOC) is low, and performances can reach or exceed performance indexes of similar solvent coatings. The aqueous epoxy modified alkyd resin has the advantages of being energy saving, environment friendly, capable of improving safeties of transportation and construction and suitable for large-scale popularization and application.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and relates to an alkyd resin, in particular to a water-based epoxy-modified alkyd resin with water solubility and corrosion resistance and a preparation method thereof. The invention also relates to the water-based epoxy-modified alkyd resin Application of resins in waterborne industrial anticorrosion coatings. Background technique [0002] With the development of the paint industry and painting towards low pollution, water-based paints are increasingly emerging. It reduces the harm and pollution caused by organic solvents to the environment, ensures the health of operators, reduces the production cost of coatings, facilitates the factory to take safety measures and transportation, and at the same time facilitates the cleaning of tools. It is energy-saving, resource-saving, and pollution-free. As a green and environmentally friendly coating with low VOC emissions, it is very necessary ...

Claims

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Application Information

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IPC IPC(8): C08G63/52C08G63/49C08G59/16C09D167/08C09D5/08
Inventor 肖菲任志慧许玉霞李华明
Owner 西北永新涂料有限公司
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