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One-component self-drying acrylic acid grafted epoxy ester aqueous dispersion coating and its preparation method

An acrylic acid grafting and epoxy ester technology, applied in the direction of coating, can solve the problems of easy hydrolysis and fracture, limit wide application, etc., and achieve the effects of strong adhesion, bright and smooth film formation, and simple and convenient use.

Inactive Publication Date: 2012-02-22
上海电动工具研究所(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amino baking varnish prepared with the resin and the amino resin has excellent mechanical properties, but because the main chain of the resin molecule prepared by this method still contains a large number of ester bonds, it is easy to be hydrolyzed and broken, thus limiting its wide application to a large extent

Method used

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  • One-component self-drying acrylic acid grafted epoxy ester aqueous dispersion coating and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 220.5g of linolenic acid, 49.5g of dehydrated castor oil fatty acid, 335.5g of E-12 epoxy resin, 0.60g of zinc oxide and 42g of xylene are dropped into the reaction kettle, and the temperature is slowly raised and the nitrogen flow is passed. 2 Ventilation was stopped after half an hour. When the temperature rises to 110°C, try to start stirring, and continue to slowly heat up to 205°C, then start the esterification with heat preservation. During the esterification process, xylene can take out the water vapor from the esterification, and condense and reflux through the oil-water separator (containing the bottom xylene). After the reaction until the acid value is less than 6mgKOH / g, xylene is extracted by vacuum distillation. Then the temperature was lowered to 120° C., and 50 g of co-solvent propylene glycol methyl ether and 125 g of n-butanol were added to maintain the temperature at 115° C. Take 28.0g of acrylic acid, 50g of methyl methacrylate, 50g of styrene, 40.5...

Embodiment 2

[0029] Put 216.5g of linolenic acid, 270.8g of E-12 epoxy resin, 0.50g of zinc oxide and 28g of xylene into the reaction kettle, slowly heat up and pass through N 2 Ventilation was stopped after half an hour. When the temperature rises to 110°C, try to start stirring, and continue to slowly heat up to 210°C, then start the esterification with heat preservation. During the esterification process, when the solvent volatilizes, the water vapor released from the esterification can be taken out, and condensed and refluxed through the oil-water separator (containing the bottom xylene). After the reaction until the acid value is less than 6mgKOH / g, xylene is extracted by vacuum distillation. Then the temperature was lowered to 120° C., and 35 g of co-solvent propylene glycol butyl ether and 104 g of propylene glycol methyl ether were added to maintain the temperature at 120° C.

[0030] Take 22.8g of acrylic acid, 81.4g of methyl methacrylate, 32.2g of n-butanol, and 4.5g of benzoy...

Embodiment 3

[0034] Put 67.5g of linolenic acid, 67.5g of oleic acid, 165.5g of E-14 epoxy resin, 0.35g of zinc oxide and 25g of xylene into the reactor, slowly heat up and pass N 2 Ventilation was stopped after half an hour. When the temperature rises to 110°C, try to start stirring, and continue to slowly heat up to 205°C, then start the esterification with heat preservation. During the esterification process, xylene can take out the water vapor from the esterification, and condense and reflux through the oil-water separator (containing the bottom xylene). After the reaction until the acid value is less than 6mgKOH / g, xylene is extracted by vacuum distillation. Then the temperature was lowered to 120° C., and 17 g of co-solvent dipropylene glycol butyl ether and 68 g of n-butanol were added to maintain the temperature at 117° C. Take 15.5g of acrylic acid, 24.5g of methyl methacrylate, 24.5g of styrene, 20.2g of n-butanol, and 2.6g of benzoyl peroxide (BPO) and mix them evenly. After t...

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Abstract

The invention provides a one-component self-drying acrylic acid grafted epoxy ester aqueous dispersion coating and its preparation method. The one-component self-drying acrylic acid grafted epoxy ester aqueous dispersion coating is characterized by comprising acrylic acid grafted epoxy ester aqueous dispersion resin, deionized water, a pH value regulator, a water-based drier, a water-based wetting agent, and a water-based defoaming agent. The preparation method consists of orderly adding deionized water, the pH value regulator, the water-based drier, the water-based wetting agent, and the water-based defoaming agent into acrylic acid grafted epoxy ester aqueous dispersion resin in proportion, mixing them uniformly, thus obtaining the self-drying acrylic acid grafted epoxy ester aqueous dispersion coating. The coating of the invention not only has excellent drying performance and storage stability, but also has excellent mechanical property, water tolerance and corrosion resistance, thus reaching the performance levels of solvent-based coatings.

Description

technical field [0001] The invention relates to a one-component self-drying type acrylic acid grafted epoxy ester aqueous dispersion paint and a preparation method. Background technique [0002] According to statistics, more than 1 million tons of organic solvents are discharged into the atmosphere by my country's paint coating industry every year, which not only seriously pollutes the environment and causes a great waste of resources, but also poses a huge threat to the physical and mental health of operators and surrounding residents. Today, when energy and resources are extremely tight, this issue has been paid more and more attention. The development and application of water-based coatings has become one of the main development directions of environmentally friendly coatings. [0003] One-component self-drying water-based environmental protection coatings mainly include air-drying water-based alkyd coatings, water-based thermoplastic acrylic coatings, water-based polyure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/12C08F283/10C08F2/24
Inventor 陆顺平冯鹏程罗小锋刘农强朱博雅
Owner 上海电动工具研究所(集团)有限公司
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