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Preparation method of water-based acrylic resin

An acrylic resin and tertiary carbonic acid technology, applied in the field of water-based acrylic resin preparation, can solve the problems of excessive heavy metal tin content in the coating, high molecular weight of the main component, and high VOC content, and achieve good fullness, fast drying speed and high gloss. Effect

Active Publication Date: 2020-11-17
WANHUA CHEM BEIJING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses stannous octoate as a catalyst, and trimethylolpropane reacts with glycidyl tert-carbonate in a molar ratio of 1:3 to 9. The main component of the product is a star-shaped branched resin, and the molecular weight of the main component is relatively high; The amount of stannous added is 3% of the total mass of reactants. If the amount is large, the content of heavy metal tin in the coating will seriously exceed the standard, causing environmental pollution; Although there is no solvent involved, it needs to be diluted with a large amount of organic solvents such as butyl acetate in downstream applications, and the VOC content is very high, which still belongs to the category of solvent-based coating resins.

Method used

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  • Preparation method of water-based acrylic resin
  • Preparation method of water-based acrylic resin
  • Preparation method of water-based acrylic resin

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Preparation method of reactive diluent: under nitrogen atmosphere, add 411g glycidyl tertiary carbonate, 134.18g trimethylolpropane, 1.19g antioxidant M070 into the reactor, start stirring, control the temperature of the reactor at 120°C for 0.5 hours Then add 1.19g of stannous octoate and 45.66g of glycidyl tertiary carbonate, control the reaction temperature to 145°C, and control the reaction temperature to 175°C after 0.5 hours, finish the reaction after 4 hours, and discharge the material.

[0044] The preparation method of water-based acrylic resin: under a nitrogen atmosphere, add 400g of the reactive diluent into the reactor, start stirring, control the temperature of the reactor at 90°C, and after 0.5 hours, add 100g of methyl methacrylate, 40g of styrene, 25g of Isobornyl acrylate, 123.5g butyl acrylate, 50g butyl methacrylate, 20.6g hydroxyethyl acrylate, and 10g azobisisobutyronitrile were pre-mixed and added dropwise to the reactor for reaction. After 1 hour,...

Embodiment 2

[0046] Preparation method of reactive diluent: under nitrogen atmosphere, add 182.66g glycidyl tertiary carbonate, 134.17g trimethylolpropane, 0.36g antioxidant M070 into the reactor, start stirring, control the temperature of the reactor at 120°C, 0.5 After 1 hour, 0.36 g of stannous octoate and 45.67 g of glycidyl tertiary carbonate were added, and the reaction temperature was controlled to be 145° C. After 0.5 hours, the reaction temperature was controlled to be 175° C. After 4 hours, the reaction was terminated and the material was discharged.

[0047] Preparation method of water-based acrylic resin: under nitrogen atmosphere, add 264.6g of alkyd resin and 147g of the active diluent into the reactor, start stirring, control the temperature of the reactor at 145°C, and after 0.5 hours, add 5g of methyl methacrylate , 46.6g styrene, 1.6g di-tert-butyl peroxide were pre-mixed and added dropwise to the reactor for reaction. After 40 minutes, 11g methyl methacrylate, 65g styrene...

Embodiment 3

[0049] Preparation method of active diluent: under nitrogen atmosphere, add 291.12g glycidyl tertiary carbonic acid ester, 134.17g trimethylolpropane, 0.72g antioxidant M070 into the reactor, start stirring, control the temperature of the reactor at 120°C, 0.5 After 1 hour, 0.72 g of stannous octoate and 51.38 g of glycidyl tertiary carbonate were added, and the reaction temperature was controlled to be 145° C. After 0.5 hours, the reaction temperature was controlled to be 175° C. After 4 hours, the reaction was terminated and the material was discharged.

[0050] Preparation method of water-based acrylic resin: under nitrogen atmosphere, add 257.6g of polyester resin and 48.5g of the reactive diluent into the reactor, start stirring, control the temperature of the reactor at 145°C, and after 0.5 hours, add 15g of methyl methacrylate Ester, 26.6g styrene, 6g isobornyl methacrylate, 4g hydroxyethyl acrylate, and 2.3g di-tert-amyl peroxide were pre-mixed and then added dropwise t...

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Abstract

The invention discloses a preparation method of water-based acrylic resin. According to the invention, a specially-made reactive diluent is adopted, so volatile organic solvents are not used in the resin prepared by using the method and in further application of the resin, and the environmental protection requirement for extremely low VOC content is met; and in addition, when the resin prepared byusing the method is applied to water-based paint, the resin has excellent comprehensive performance.

Description

technical field [0001] The invention relates to a preparation method of water-based acrylic resin, and the preparation method adopts an active diluent. Background technique [0002] With the strengthening of the overall environmental awareness of the society and the increasingly stringent environmental regulations, water-based coatings with lower VOC (volatile organic compound) emissions are rapidly replacing water-based and solvent-based coatings with high VOC emissions. However, due to technical constraints, the synthesis and application of water-based paint resins still require the use of a large amount of co-solvents and / or film-forming aids, and the VOC of water-based paints is generally high. Therefore, under the premise of ensuring excellent application performance, if the water-based coating resin can greatly reduce its own VOC content, and can achieve no or less use of VOC substances in downstream applications, it will be of great significance to protect the environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/01C08F283/02C08F220/18C08F220/14C08F212/08C08F220/20C08F220/06
CPCC08F283/01C08F283/02C08F220/18C08F212/08
Inventor 焦方军刘海蓉于海宁
Owner WANHUA CHEM BEIJING