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A kind of water-based self-drying acrylic acid modified epoxy ester resin emulsion and preparation method thereof

A technology of epoxy ester resin and acrylic acid, which is applied in the direction of coating, etc., can solve the problems of low reactivity of emulsifier and decrease of paint film performance, and achieve the effects of easy polymerization heat, polymerization heat diffusion, and avoid performance degradation

Active Publication Date: 2019-10-15
CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP XIAMEN HONGYE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN104152009A just adopts this method. Compared with (1) and (2), this method has the advantages of convenient temperature control and no use of organic solvents, but it also has the disadvantage of low reactivity of the emulsifier used, which may easily cause the deterioration of the paint film performance.

Method used

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  • A kind of water-based self-drying acrylic acid modified epoxy ester resin emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] a. Preparation of reactive emulsifier I: (1) add 892.7g of deionized water to 14.1g of ammonia water and stir, and heat to 50°C after completely dissolving to form a uniform aqueous solution; (2) slowly add 93.2g of linolenic acid, and react Until the solid is completely dissolved and the pH is 7-9.

[0040] b. Preparation of reactive emulsifier II: (1) Heat 200g of epoxy resin E-51 to 110°C, pass through nitrogen protection, slowly add 141.8g of linolenic acid and 2g of DMP-30 to react; (2) react to When the acid value of the system is less than 5mgKOH / g, cool down to 100°C, add 36.7g of acrylic acid; (3) add 100g of maleic anhydride when the acid value of the system is less than 5mgKOH / g; (4) react until the acid value of the system is 115-125mgKOH / g Cool down to 60° C. and add 42.9 g of ammonia water and 478 g of deionized water to adjust the pH to 7-9.

[0041] c. Preparation of epoxy ester: (1) Heat 300g of epoxy resin E-51 to 110°C, pass through nitrogen protecti...

Embodiment 2

[0044] a. Preparation of reactive emulsifier I: (1) Add 900g of deionized water to 26.6g of triethylamine and stir, and heat to 60°C after completely dissolving to form a uniform aqueous solution; (2) Slowly add 36.7g of oleic acid, 36.7 g linolenic acid, react until the solids are completely dissolved and the pH is 7-9.

[0045] b. Preparation of reactive emulsifier II: (1) Heat 266.5g of epoxy resin E-12 to 130°C, pass through nitrogen protection, slowly add 22.2g of oleic acid, 22.2g of linoleic acid and 4.1g of N,N- Dimethylbenzylamine reacts; (2) cool down to 100°C when the acid value of the system is less than 5mgKOH / g, and add 13.7g methacrylic acid; (3) add 78.3g horsepower when the acid value of the system is less than 5mgKOH / g to acid anhydride; (4) react until the acid value of the system is 105-115mgKOH / g, cool down to 90°C, add 96.9g triethylamine and 500g deionized water, and adjust the pH to 7-9.

[0046] c. Preparation of epoxy ester: (1) Heat 530.4g of epoxy ...

Embodiment 3

[0049] a. Preparation of reactive emulsifier I: (1) Add 890g of deionized water to 26.7g of N,N-dimethylethanolamine and stir, and heat to 60°C after completely dissolving to form a uniform aqueous solution; (2) Slowly add 55.5 g dehydrated ricinoleic acid, 27.8g linolenic acid, and react until the solids are completely dissolved and the pH is 7-9.

[0050] b. Preparation of reactive emulsifier II: (1) Heat 161.8g of epoxy resin E-54 to 115°C, pass through nitrogen protection, slowly add 81g of dehydrated ricinoleic acid, 40.5g of linolenic acid and 2.8g of triethanolamine to carry out Reaction; (2) cool down to 95°C when the acid value of the system is less than 5mgKOH / g, and add 37.6g methacrylic acid; (3) add 85.7g maleic anhydride when the acid value of the system is less than 5mgKOH / g; (4) When the acid value of the system is 115-125mgKOH / g, cool down to 60°C, add 93.4g N,N-dimethylethanolamine and 500g deionized water, and adjust the pH to 7-9.

[0051] c. Preparation o...

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Abstract

The invention relates to water-based self-drying acrylic modified epoxy ester resin emulsion and a method for preparing the same. The water-based self-drying acrylic modified epoxy ester resin emulsion is prepared from raw materials including, by weight, 5-9 parts of reactive emulsifiers I, 6-14 parts of reactive emulsifiers II, 0.3-0.9 part of sodium bicarbonate, 3-9 parts of acrylic monomers, 30-50 parts of epoxy ester, 0.1-1.7 parts of initiators and 30-50 parts of deionized water. The water-based self-drying acrylic modified epoxy ester resin emulsion and the method have the advantages that the method for preparing the water-based self-drying acrylic modified epoxy ester resin emulsion is extremely low in solvent dosage, the reaction temperatures are easy to control, the water-based self-drying acrylic modified epoxy ester resin emulsion prepared by the aid of the method contains the reactive emulsifiers, single components in the water-based self-drying acrylic modified epoxy esterresin emulsion can be voluntarily cured at the room temperature, and paint films are excellent in self-drying, adhesion, water resistance and salt fog resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based self-drying acrylic modified epoxy ester resin emulsion and a preparation method thereof. Background technique [0002] Epoxy resin has excellent mechanical strength, bonding performance and anti-corrosion performance. At the same time, it has the disadvantages of poor weather resistance and cumbersome construction technology. Self-oxidative cross-linking, no need to add epoxy curing agent, the modification of epoxy ester by acrylic acid can improve its drying rate and weather resistance. Therefore, the research on the modification and water-based modification of epoxy resin with acrylic acid and unsaturated fatty acid is of great significance to the field of water-based anticorrosion. [0003] At present, the methods for preparing water-based coatings from acrylic acid and unsaturated fatty acid modified epoxy resin mainly include: (1) polymerization after esteri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/10C08F220/06C08F220/18C08F220/14C08F212/08C08F220/20C08F2/24C09D151/08
CPCC08F2/24C08F283/105C09D151/08C08F220/1804
Inventor 黄舟吴玉生马振伟李命成彭鹏飞陈梅红陈镇杉
Owner CHINA BUILDING MATERIAL TEST & CERTIFICATION GRP XIAMEN HONGYE
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