Preparing method of bifunctionality epoxy resin emulsifier and emulsion

A technology of epoxy resin and bifunctionality, which is applied in the field of preparation of bifunctional epoxy resin emulsifiers and emulsions. It can solve the problems of difficult control of the reaction, high production cost, and many by-products, and achieve dilution and storage stability. Excellent, low reaction requirement, enhanced hydrophilicity and heat resistance effect

Active Publication Date: 2016-07-27
CHANGZHOU UNIV +1
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former mainly introduces polar groups into the epoxy resin chain through free radical grafting modification and functional monomer chain extension, and then neutralizes to form

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparing method of bifunctionality epoxy resin emulsifier and emulsion
  • Preparing method of bifunctionality epoxy resin emulsifier and emulsion
  • Preparing method of bifunctionality epoxy resin emulsifier and emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Synthesis of PEGDET

[0028] Under a nitrogen atmosphere, add 40.00g (10mmol) PEG4000 and 3.84g (20mmol) TMA to a 250ml three-neck flask with a condenser, heat and stir to make the raw materials completely miscible, and take 1ml (3.5mol / L) of TMA with a syringe. The boron trifluoride ether polyethylene glycol 400 solution was slowly added dropwise to the above reaction solution, the temperature was raised to 70°C, the acid value was measured every 0.5h, and the corresponding esterification rate was calculated, and the reaction was carried out for 2h. Then add 9.09g (20mmol) E-44 to the reaction system, continue the reaction at 95°C for 5h under the action of the catalyst boron trifluoride ether (no need to supplement), and take samples every 0.5h to measure the epoxy value to calculate the epoxy conversion rate , and finally make PEGDET.

[0029] 2. Preparation of Waterborne Epoxy Resin Emulsion

[0030] Add the PEGDET and E-44 prepared by the above method into a 1...

Embodiment 2

[0033] 1. Synthesis of PEGDET

[0034] Under a nitrogen atmosphere, add 40.00g (10mmol) PEG4000 and 3.84g (20mmol) TMA to a 250ml three-necked flask with a condenser, heat and stir to make the raw materials completely miscible, and take 2ml (3.5mol / L) of TMA with a syringe. Boron trifluoride ether polyethylene glycol 400 solution was slowly added dropwise to the above reaction solution, the temperature was raised to 80°C, the acid value was measured every 0.5h, and the corresponding esterification rate was calculated, and the reaction was carried out for 2h. Then add 9.09g (20mmol) E-44 to the reaction system, continue the reaction at 95°C for 5h under the action of the catalyst boron trifluoride ether (no need to supplement), and take samples every 0.5h to measure the epoxy value to calculate the epoxy conversion rate , and finally make PEGDET.

[0035] 2. Preparation of Waterborne Epoxy Resin Emulsion

[0036] Add the PEGDET and E-44 prepared by the above method into a 100...

Embodiment 3

[0039] 1. Synthesis of PEGDET

[0040] Under a nitrogen atmosphere, add 40.00g (10mmol) PEG4000 and 3.84g (20mmol) TMA to a 250ml three-necked flask with a condenser, heat and stir to make the raw materials completely miscible, and take 2ml (3.5mol / L) of TMA with a syringe. The boron trifluoride ether polyethylene glycol 400 solution was slowly added dropwise to the above reaction solution, the temperature was raised to 70°C, the acid value was measured every 0.5h, and the corresponding esterification rate was calculated, and the reaction was carried out for 1h. Then add 9.09g (20mmol) E-44 to the reaction system, continue the reaction at 95°C for 5h under the action of the catalyst boron trifluoride ether (no need to supplement), and take samples every 0.5h to measure the epoxy value to calculate the epoxy conversion rate , and finally make PEGDET.

[0041] 2. Preparation of Waterborne Epoxy Resin Emulsion

[0042] Add the PEGDET and E-44 prepared by the above method into a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a preparing method of bifunctionality epoxy resin emulsifier and emulsion. The preparing method comprises the specific steps that 1, trimellitic anhydride (TMA) and a catalyst (boron trifluoride diethyl etherate) are added into polyethylene glycol (PEG4000), and the temperature is raised for reaction; 2, a proper amount of bisphenol A epoxy resin E-44 is added into the reaction liquid, and the temperature continues to be raised for the reaction, so that multi-block epoxy resin emulsifier (PEGDET for short) is obtained; 3, a proper amount of epoxy resin and the emulsifier are mixed, deionized water is slowly added dropwise at a certain temperature, high-speed stirring is carried out until viscosity of a system is reduced abruptly, at the moment, the system is subjected to phase inversion, and water continues to be added, so that the water-borne epoxy resin emulsion is obtained. The water-borne epoxy resin emulsion prepared through the method has the advantages of being small in average grain diameter, low in dispersion, excellent in centrifuge, dilution and storage stability performance and the like, and a new thought is provided for preparing high-performance water-borne epoxy emulsion.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a difunctional epoxy resin emulsifier and a preparation method of the emulsion. Background technique [0002] With the increasing awareness of environmental protection in society, high-performance green and environmentally friendly coatings such as water-based coatings and powder coatings have attracted more and more attention. Water-based resin is an emulsion or aqueous solution formed by dispersing synthetic resin particles, droplets or colloids in the water phase. It has the advantages of environmental protection, low price and convenient construction. It is widely used in chemical industry, construction, food, aviation, fields such as pharmaceuticals and electrical appliances. At present, there are many kinds of water-based resins, including water-based polyurethane, water-based epoxy resin, water-based acrylic resin, etc., all of which have shown excel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G81/00C08J3/03C08L63/00
CPCC08G81/00C08J3/03C08J2363/00
Inventor 马江权陈坤姚超左士祥殷云武薛宝安景小涛
Owner CHANGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap