Emulsifier for low-solid-content waterborne epoxy resin coating and preparation method thereof

A water-based epoxy resin and emulsifier technology, used in the field of coating materials, can solve the problems of long emulsification time and complex emulsification process, and achieve the effects of short emulsification time, simple emulsification process and high quality

Inactive Publication Date: 2020-03-27
上海瀚岱化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1) The emulsification process is very complicated. Although different equipment determines the general process, different product types require completely different processes
[0010] 2) Long emulsification time

Method used

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  • Emulsifier for low-solid-content waterborne epoxy resin coating and preparation method thereof
  • Emulsifier for low-solid-content waterborne epoxy resin coating and preparation method thereof
  • Emulsifier for low-solid-content waterborne epoxy resin coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation method of emulsifier for water-based epoxy resin comprises the following steps:

[0036] (1) At 95°C, the compound shown in formula (I) reacts with glycidyl alcohol under reflux to obtain the compound shown in formula (II); the reaction time is 1.5h, the compound shown in formula (I) reacts with epoxy The dosage ratio of propanol is 1:2.5.

[0037] (2) Cool down to 45°C, add succinic acid to the compound represented by formula (II), and stir to obtain it; the reaction time is 0.5h.

Embodiment 2

[0039] The preparation method of emulsifier for water-based epoxy resin comprises the following steps:

[0040] (1) At 90°C, the compound shown in formula (I) reacted with glycidyl alcohol to obtain the compound shown in formula (II); the reaction time was 2h, and the compound shown in formula (I) reacted with glycidyl alcohol The dosage ratio of alcohol is 1:3.

[0041] (2) Cool down to 40°C, add succinic acid to the compound represented by formula (II), and stir to obtain it; the reaction time is 0.6h.

Embodiment 3

[0043] The preparation method of emulsifier for water-based epoxy resin comprises the following steps:

[0044] (1) At 100°C, the compound shown in formula (I) reacts with glycidyl alcohol under reflux to obtain the compound shown in formula (II); the reaction time is 1h, the compound shown in formula (I) reacts with glycidyl alcohol The dosage ratio of alcohol is 1:2.

[0045] (2) Cool down to 50°C, add succinic acid to the compound represented by formula (II), and stir to obtain it; the reaction time is 0.4h.

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PUM

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Abstract

An emulsifier for waterborne epoxy resin provided by the invention is at least prepared from the following components in parts by weight: 2 parts of polyether amine, 2-4 parts of epoxypropanol and 1-2parts of succinic acid. The invention further provides a preparation method of the emulsifier for waterborne epoxy resin. The emulsifier provided by the invention can prevent demulsification during direct pulping of epoxy emulsion, the emulsification process is simple, the emulsification time is short, and waterborne epoxy resin prepared by using the emulsifier is high in quality.

Description

technical field [0001] The invention relates to the field of paint materials, in particular to an emulsifier for low-solid aqueous epoxy resin paint and a preparation method thereof. Background technique [0002] With the successive promulgation of national environmental protection policies and increasingly stringent legal supervision, coating companies have invested a lot of manpower and material resources to develop environmentally friendly low-VOC coatings including epoxy coatings. [0003] There are many technical routes for environmentally friendly epoxy coatings, such as water-based epoxy coatings, solvent-based high-solid coatings, solvent-free, powder, and so on. These different types of coatings have their own unique properties and characteristics, which can meet the application requirements of different occasions. Among them, technical routes such as solvent-free and powder coatings can almost achieve zero VOC. Although they require high environmental conditions f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42C08G65/332C08G65/26C08L63/00C08L71/02C09D163/00C09D7/65C09K23/42
CPCC08G65/3322C08G65/2624C08L63/00C09D163/00C09D7/65C09K23/16
Inventor 沈岳吕宏飞沈君岱伍宽平
Owner 上海瀚岱化学有限公司
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