Waterborne epoxy emulsifier as well as preparation and application thereof

A water-based epoxy emulsion, water-based epoxy technology, applied in the direction of epoxy resin glue, epoxy resin coating, adhesive, etc., can solve the problems of affecting coating resistance and protection performance, poor wet adhesion, etc., and achieve good emulsification ability , Improve adhesion and good compatibility

Active Publication Date: 2019-09-17
江苏富琪森新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the preparation process of epoxy emulsifiers, it is often necessary to use a large number of long hydrophilic chains to ensure the emulsification effect. These long hydrophilic chains have few

Method used

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  • Waterborne epoxy emulsifier as well as preparation and application thereof
  • Waterborne epoxy emulsifier as well as preparation and application thereof
  • Waterborne epoxy emulsifier as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] Put 2000g of ED2003 (Huntsman polyetheramine), 150g of phenyl glycidyl ether and 1500g of propylene glycol methyl ether into the reaction kettle, raise the temperature to 100°C and react for 3 hours, then add 2000g of epoxy resin E-20 to the reaction system and continue the reaction After 2 hours; add 230g phosphoric acid (85%) to the reaction system, maintain the original reaction temperature and react for 3 hours, add 1060g polyethylene glycol diglycidyl ether to the reaction system, and increase the temperature to 110°C and react for 2 hours. Cooling and discharging to obtain water-based epoxy emulsifier A.

Example Embodiment

[0032] Example 2

[0033] Put 900g of ED900 (Huntsman polyetheramine), 130g of butyl glycidyl ether and 1000g of propylene glycol methyl ether into the reaction kettle, raise the temperature to 110°C and react for 4 hours, add 2000g of epoxy resin E-20 to the reaction system and continue the reaction After 2 hours; add 230g phosphoric acid (85%) to the reaction system, maintain the original reaction temperature and react for 3 hours, add 1270g polyethylene glycol diglycidyl ether to the reaction system, raise the temperature to 120°C and react for 2 hours, Cool down the material to obtain water-based epoxy emulsifier B.

Example Embodiment

[0034] Example 3

[0035] Put 4000g of D4000 (Huntsman polyetheramine), 300g of C12-14 alkyl glycidyl ether and 2500g of propylene glycol methyl ether into the reaction kettle, raise the temperature to 110°C and react for 4 hours, then add 2000g of epoxy resin E-20 to the reaction system , Continue the reaction for 2 hours; add 230g phosphoric acid (85%) to the reaction system, maintain the original reaction temperature and react for 3 hours, add 800g polyethylene glycol diglycidyl ether to the reaction system, and heat to 120°C for reaction 2. After hours, the temperature is lowered and the material is discharged to obtain the water-based epoxy emulsifier C.

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Abstract

The invention belongs to the field of epoxy emulsifiers, and discloses a phosphate-type waterborne epoxy emulsifier as well as preparation and application thereof. The structure of the emulsifier disclosed by the invention contains an epoxy group which can participate in a curing reaction in a film-forming process so as to be anchored in a coating and is not easy to migrate; a nonionic polyether long chain can migrate to the surfaces of latex particles in an emulsion process to form a hydration shell so as to stabilize the latex particles, and can provide certain viscosity and thixotropy for a waterborne epoxy emulsion simultaneously to effectively control the rheological property of an emulsified waterborne epoxy emulsion; the structure of the emulsifier contains a basic epoxy structure which can improve the compatibility of the emulsifier and epoxy resin; a tertiary amine group in the structure provides a basic group which can form a zwitterionic structure with a phosphate group, thus enabling the emulsifier to have good emulsifying capacity within a relatively wide pH (Potential of hydrogen) range, and the introduction of the phosphate group can improve the adhesive force of waterborne epoxy paint on the surface of a substrate and the coating tolerance after curing.

Description

technical field [0001] The invention belongs to the field of epoxy emulsifiers, in particular to a preparation method and application of a water-based epoxy emulsifier. Background technique [0002] With the improvement of environmental protection awareness, the demand for water-based epoxy coatings is increasing, starting from water-based epoxy floors and gradually expanding to large-scale steel structures and containers, that is, from the field of light anti-corrosion to the field of heavy anti-corrosion. [0003] Basic epoxy is a viscous liquid or solid at room temperature. It is a thermoplastic linear structure and has low solubility in water. Therefore, converting solvent-based epoxy into water-based epoxy resin is an important step in the preparation of water-based epoxy resin. The widely used method is: using an emulsifier to emulsify and disperse basic epoxy in water to prepare water-based epoxy resin. Emulsifiers include non-reactive emulsifiers and reactive emuls...

Claims

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Application Information

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IPC IPC(8): C08J3/03C08L63/00C09D163/00C09J163/00
CPCC08J3/03C09D163/00C09J163/00C08J2363/00
Inventor 付长清邓煜东
Owner 江苏富琪森新材料有限公司
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