Preparation method of high solid content epoxy modified acrylic resin emulsion

An acrylic resin, epoxy modification technology, applied in the direction of coating, can solve the problem of high solid content epoxy modified acrylic resin emulsion and other problems, achieve broad industrial application prospects, reduce energy consumption, save brushing effect of time

Active Publication Date: 2012-07-25
广东德鑫翔远高新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] So far there is no report of high solid co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0023] Example 1

[0024] (1) 179g monomer (accounting for total weight 20%) is added dropwise in the colloidal solution that is made up of emulsifier (8.79g), pH regulator (0.88g) and deionized water (840g), high-speed stirring (stirring speed (1500 rev / min) after dispersing evenly, start to heat up to 80±5°C, pass protective gas in the system, remove oxygen, then add initiator (0.88g) into the system, initiate the system to start polymerization, react for 20 minutes, Obtain nuclear seed microemulsion;

[0025] (2) Put the epoxy resin (E44, 148g) into the mixed monomer (200g), add 0.88g of emulsifier, and use a stirring speed of 500 rpm to fully dissolve it, then slowly add the remaining 500g of mixed monomer monomer, stirred for 10 minutes to obtain a pre-emulsion;

[0026] (3) at the temperature of reaction of 85 ± 5 ℃, the pre-emulsion and initiator (1.8g) obtained by step 2 are slowly dripped respectively in the nuclear seed microemulsion obtained by step 1, and the sti...

Example

[0028] Comparative example 1

[0029] (1) Add epoxy resin (E44, 148g) to 379g of monomers, stir at a stirring speed of 500 rpm until uniformly dispersed, then add emulsifier (8.79g), pH regulator (0.88g) and remove Ionized water (840g), high-speed stirring (stirring speed 1500 rev / min) after dispersing evenly, start to heat up to 80±5°C, pass protective gas in the system to remove oxygen, and then add the initiator (0.88g) into the system In the process, the initiation system starts to polymerize, reacts for 20 minutes, and obtains the nuclear seed microemulsion;

[0030] (2) Add 0.88g of emulsifier to the remaining 500g of homogeneously mixed monomers, and stir at a stirring speed of 500 rpm for 10 minutes to obtain a pre-emulsion;

[0031] (3) at the temperature of reaction of 85 ± 5 ℃, the pre-emulsion and initiator (1.8g) obtained by step 2 are slowly dripped respectively in the nuclear seed microemulsion obtained by step 1, and the stirring speed is at 200 rpm, 3 hours ...

Example Embodiment

[0033] Example 2

[0034] (1) 263.7g monomer (accounting for total weight 30%) is added dropwise in the colloidal solution that is made up of emulsifier (17.58g), pH regulator (0.88g) and deionized water (840g), high-speed stirring (stirring After the speed is 1700 rev / min), the temperature starts to rise to 80±5°C, and the protective gas is passed through the system to remove oxygen, and then the initiator (0.88g) is added to the system, and the initiation system starts to polymerize, and the reaction is 30 minutes , to obtain nuclear seed microemulsion;

[0035](2) Put the epoxy resin (E44, 148g) into the mixed monomer (200g), add 0.88g of emulsifier, and use a stirring speed of 500 rpm to fully dissolve it, then slowly add the remaining 415.3g and mix well monomer, stirred for 20 minutes to obtain a pre-emulsion;

[0036] (3) at the reaction temperature of 85 ± 5 ℃, the pre-emulsion and initiator (1.8g) that step 2 obtains are slowly dripped respectively in the nuclear se...

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PUM

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Abstract

The invention relates to a method capable of preparing epoxy modified acrylic resin emulsion with solid content of greater than 60 percent. The method comprises the following steps of: preparing seed liquor; and adding pre-emulsion and an initiator in batches to finally obtain the epoxy modified acrylic resin emulsion with solid content of greater than 60 percent. According to the technology provided by the invention, the epoxy resin is introduced into the acrylic resin; the new resin shows the advantages of the epoxy resin and the acrylic resin and overcomes the defects of the epoxy resin and the acrylic resin respectively; and the resin prepared by the invention belongs to a high solid resin, has the advantages of material saving, transportation cost saving, low solvent content, improved safety and health, reduced energy consumption for production and use of a coating, thicker filming due to one-time brushing and capability of saving brushing time, and has broad industrial application prospect and can be used for the fields of ships, automobiles and the like.

Description

technical field [0001] The invention relates to a method for preparing an acrylic resin emulsion, in particular to a method for preparing an epoxy-modified acrylic resin emulsion with a high solid content (>60%). Background technique [0002] With the enhancement of people's awareness of environmental protection and energy, especially the strict restrictions on the content of organic volatiles in coating systems by the environmental protection laws of various countries. Promote the development of low-pollution coatings represented by high solid content coatings. High solid content coatings are developed on the basis of traditional solvent-based coatings, which can not only greatly reduce the volatile organic compound (VOC) content and curing energy consumption of the coating system. Moreover, due to the use of molecular design principles, combined with new synthesis and cross-linking technologies, the composition and structure of coating polymers can be effectively contr...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F2/24C09D151/08
Inventor 李少香武德法陈希磊姚丹
Owner 广东德鑫翔远高新材料有限公司
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