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Non-ionic water-borne epoxy resin and preparation method thereof

A water-based epoxy resin, non-ionic technology, applied in epoxy resin coatings, coatings, polyether coatings, etc., can solve the problems of increased process complexity, zero VOC has not yet been achieved, and can improve crosslinking density, Good for stability and compatibility

Inactive Publication Date: 2016-04-13
江苏丰彩建材(集团)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, solvents are introduced in the synthesis process of the above two water-based epoxy resins, which need to be removed by vacuum distillation in the later stage of synthesis. Zero VOC has not yet been achieved, and the process complexity has increased accordingly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 80g of carboxy-terminated polyether 600 and 50g of epoxy resin E-51 into a three-necked flask equipped with a stirring and temperature control device, mix well and react at a temperature of 70°C for 3.5 hours, then add 30g of ethylene glycol dropwise to the three-necked flask Alcohol diglycidyl ether, the dropping rate is controlled at 15 drops / minute, and then reacted at 75°C for 4.5 hours to finally obtain non-ionic water-based epoxy resin A.

[0020] The non-ionic water-based epoxy resin A and the commercially available water-based epoxy curing agent H208 were used to prepare a coating film. After one week of curing, the properties of the coating film were tested according to the GB / T22374-2008 standard. The results are shown in Table 1.

Embodiment 2

[0022] Add 20g of carboxy-terminated polyether 1000, 40g of carboxyl-terminated polyether 2000 and 34g of epoxy resin E-44 into a three-necked flask equipped with a stirring and temperature-controlling device, mix well and react at 80°C for 4 hours, and then add to the three-necked flask 25g of 1,4-butanediol diglycidyl ether was added dropwise to the flask at a rate of 10 drops / minute, and then reacted at 80°C for 5 hours to finally obtain nonionic water-based epoxy resin B.

[0023] The non-ionic water-based epoxy resin B and the commercially available water-based epoxy curing agent H208 were used to prepare a coating film. After one week of curing, the properties of the coating film were tested according to the GB / T22374-2008 standard. The results are shown in Table 1.

Embodiment 3

[0025] Add 50g of carboxy-terminated polyether 4000 and 20g of epoxy resin E-20 into a three-necked flask equipped with a stirring and temperature control device, mix well and react at 85°C for 4.5 hours, then add 15g of ethylene glycol dropwise to the three-necked flask Alcohol diglycidyl ether and 10 g of 1,6-hexanediol diglycidyl ether were added at a rate of 20 drops / minute, and then reacted at 85°C for 5.5 hours to finally obtain nonionic water-based epoxy resin C.

[0026] The non-ionic water-based epoxy resin C and the commercially available water-based epoxy curing agent H208 were used to prepare a coating film. After one week of curing, the properties of the coating film were tested according to the GB / T22374-2008 standard. The results are shown in Table 1.

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PUM

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Abstract

The invention relates to non-ionic water-borne epoxy resin. The non-ionic water-borne epoxy resin is prepared from the following raw materials in parts by weight: 30-80 parts of carboxyl-terminated polyether, 20-50 parts of epoxy resin and 10-30 parts of diepoxide. The non-ionic water-borne epoxy resin has the advantages that a synthetic technology is simple, reaction conditions are mild, a solvent is not added in a synthetic process, the non-ionic water-borne epoxy resin does not contain ionic groups, is not influenced by pH and has wide application range, and diepoxide is introduced in the synthetic process, so that crosslinking density of a reaction process is improved, and hardness of a film can be beneficially improved.

Description

technical field [0001] The invention relates to a nonionic water-based epoxy resin and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Epoxy resin has good adhesion, low curing shrinkage, high mechanical strength, good corrosion resistance, solvent resistance and other properties, and is widely used in chemical industry, electrical appliances, construction aviation and other fields. Traditional epoxy resins are mostly solvent-based epoxy resins. The organic solvents contained in them will cause a large amount of VOC, which will cause harm to the ecological environment and human health. At the same time, due to the volatility and flammability of organic solvents, solvent-based epoxy resins are used in There are great potential safety hazards in construction, transportation, storage and other aspects. Moreover, the large amount of solvent used will increase the application cost. With the continuous enhanceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/00C08G81/00C09D171/00C09D163/00C09D187/00
CPCC08G65/00C08G81/00C08G2650/06C09D163/00C09D171/00C09D187/00
Inventor 朱殿奎李文朱灿银沈志明李晴殷蕾李安宁李娟
Owner 江苏丰彩建材(集团)有限公司
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