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Water-borne epoxy ester modified alkyd resin emulsion and preparation method thereof

A technology of alkyd resin emulsion and epoxy resin, which is applied in dyeing, coating, textile and paper making, etc., can solve the problems of high energy consumption, low production efficiency and high cost, and achieve simple production process and chemical resistance Good, strong adhesion effect

Inactive Publication Date: 2011-01-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The product made with this product as the base material has excellent construction performance and good anti-rust performance, but it still has great defects: the epoxy ester resin is prepared by reacting with unsaturated fatty acid as raw material and epoxy resin, and the cost is relatively high , and the resin synthesis intermediate product acrylic modified epoxy ester resin contains a large amount of organic solvent, the desolventization process has high energy consumption and low production efficiency

Method used

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  • Water-borne epoxy ester modified alkyd resin emulsion and preparation method thereof

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Effect test

Embodiment 1

[0048] Put 200g of linseed oil, 90g of glycerin, 50g of epoxy resin E-20, 0.5g of triphenylphosphine, and 0.05g of lithium hydroxide into the reaction vessel, protect it with nitrogen, and gradually heat up to 220°C for alcoholysis reaction. When 95% When the ethanol tolerance reaches 1:5, lower the temperature to 200°C, add 26.7g of phthalic anhydride to the reaction system every half hour, add three times, the total amount of phthalic anhydride added is 80g, and remove the water generated by the reaction through the water separator. When the acid value of the system is ≤5mgKOH / g and the temperature is lowered to 75°C, start to drop 190g of acrylic monomer, 1.2g of γ-methacryloxypropyltrimethoxysilane (KH570) and 2.5g of benzoyl peroxide (BPO) mixture, the dropwise addition time is 2.5h, after the dropwise addition is completed, keep the temperature for 3-5h. The solvent and residual monomers in the reaction system were vacuumed off. Cool down to 60°C, add 65g of triethylami...

Embodiment 2

[0050]Put 180g of soybean oil, 80g of pentaerythritol, 50g of epoxy resin E-20, 0.5g of triphenylphosphine, and 0.08g of lead oxide into a reaction vessel, protect it with nitrogen, and gradually raise the temperature to 230°C for alcoholysis reaction. When 95% ethanol tolerates When the temperature reaches 1:10, turn down the temperature to 200°C, add 26.7g of phthalic anhydride to the reaction system every half hour, add three times, the total amount of phthalic anhydride added is 80g, and remove the water generated by the reaction through the water separator. When the acid value of the system is less than or equal to 5mgKOH / g and the temperature is lowered to 80°C, start to drop 160g of acrylic monomer, 1.2g of γ-methacryloxypropyltrimethoxysilane (KH570) and 2.2g of benzoyl peroxide (BPO) mixture, the dropwise addition time is 2, after the dropwise addition is completed, keep warm for 3-5h. The solvent and residual monomers in the reaction system were vacuumed off. Cool d...

Embodiment 3

[0052] Put 300g of linseed oil, 120g of glycerin, 130g of epoxy resin E-12, 1.5g of triphenylphosphine and 1.0g of calcium naphthenate into a reaction vessel, protect it with nitrogen, and gradually raise the temperature to 225°C for alcoholysis. When the tolerance of 95% ethanol reaches 1:10, turn down the temperature to 200°C, add 60g of phthalic anhydride to the reaction system every half hour, add three times, the total amount of phthalic anhydride added is 180g, and remove the water generated by the reaction through the water separator. When the acid value of the system is ≤5mgKOH / g and the temperature is lowered to 76°C, start to drop 280g of acrylic monomer, 1.6g of γ-methacryloxypropyltrimethoxysilane (KH570) and 3.0g of benzoyl peroxide (BPO) mixture, the dropwise addition time is 3h, after the dropwise addition is completed, keep warm for 4h. The solvent and residual monomers in the reaction system were vacuumed off. Cool down to 55°C, add 96g of 2-amino-1-propanol ...

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Abstract

The invention provides water-borne epoxy ester modified alkyd resin emulsion and a preparation method thereof. The method comprises the following steps: allowing unsaturated fatty oil, polyalcohol, epoxy resin and the like to carry out alcoholysis reaction by using triphenylphosphine and an alcoholysis catalyst; adding polyacid for esterification; dropwise adding crylic acid monomers such as methacrylic acid, phenylethylene, butyl acrylate and the like and a silane coupling agent for copolymerization under initiation of benzoyl peroxide; adding amine to the obtained copolymer for neutralizing to form salt; and dispersing with water to obtain the high-performance water-borne epoxy ester modified alkyd resin emulsion. The emulsion maintains self-drying property, flexibility and other excellent properties of alkyd resin, has excellent adhesive property of the epoxy resin as well as excellent adhesion force, excellent physical and mechanical properties and strong water resistance, strong salt fog resistance, strong acid and alkali resistance and other properties; and the emulsion has the advantages of possessing good stability and being nontoxic and harmless, thus meeting the environmental friendly requirement.

Description

technical field [0001] The invention belongs to the field of alkyd resin modification, and in particular relates to the preparation of a water-based epoxy ester modified alkyd resin emulsion. Background technique [0002] In recent years, due to the gradual enhancement of people's awareness of environmental protection, systems containing no or less volatile organic compounds (VOC) and no harmful air pollutants (HAP) have become the development direction of new materials. Therefore, the development of water-based resins has been paid more and more attention by people. At present, the more successful varieties mainly include: water-based acrylic resins, water-based alkyd resins, and water-based epoxy ester resins. [0003] Water-based alkyd resin is a high-acid value low-viscosity resin formed by esterification and polycondensation of polyols, polybasic acids and vegetable oils (acids) or other fatty acids. It uses aromatic polyester as the main chain and aliphatic acid polye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08G63/676C08G59/14C09D151/08D06P1/52
Inventor 涂伟萍王晓莹王锋胡剑青
Owner SOUTH CHINA UNIV OF TECH
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