Non-ionic self-emulsifying waterborne epoxy curing agent as well as preparation method and application thereof
A water-based epoxy and non-ionic technology, used in epoxy resin coatings, coatings, etc., can solve the problems of long surface drying time, low gloss, poor water resistance, etc., and improve water resistance, acid and alkali resistance. , the synthesis process is simple, the effect of high gloss
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0048] A nonionic self-emulsifying water-based epoxy curing agent and a preparation method thereof, the steps are as follows:
[0049] (1) Synthesis of intermediate Y: in parts by mass, 4.9 parts of ethanolamine are added to a three-necked flask with a stirring paddle, and 22.9 parts of polyethylene glycol diglycidyl ether are added to a three-necked flask equipped with ethanolamine , 65°C, 240r / min heat preservation reaction for 2 hours, then heat up to 80°C heat preservation reaction for 2 hours, cool and discharge;
[0050] (2) In terms of parts by mass, 31.4 parts of liquid epoxy resin E-51 are added to the product obtained in step (1), and the reaction is carried out at 65 ° C and 240 r / min for 1.5 hours under heat preservation to obtain a modified epoxy resin ;
[0051] (3) In terms of parts by mass, add 14.6 parts of triethylenetetramine to the product of step (2), react at 65°C and 240r / min for 1 hour, then raise the temperature to 80°C and keep it warm for 2 hours to...
Embodiment 2
[0056] A nonionic self-emulsifying water-based epoxy curing agent and a preparation method thereof, the steps are as follows:
[0057] (1) Synthesis of hydrophilic intermediates: in parts by mass, 26.6 parts of 2,2'-(ethylenedioxy)bis(ethylamine) were added to a three-necked flask with a stirring paddle, and 24.3 parts Add 1,4-butanediol diglycidyl ether into a three-necked flask filled with 2,2'-(ethylenedioxy)bis(ethylamine), keep it warm at 60°C and 230r / min for 1 hour, then raise the temperature Heat the reaction at 75°C for 2.5 hours, then cool and discharge;
[0058] (2) In terms of parts by mass, 54.5 parts of liquid epoxy resin E-44 were added to the product obtained in step (1), and were incubated at 60°C and stirred at 220r / min for 2 hours to obtain a modified epoxy resin ;
[0059] (3) In terms of parts by mass, add 12.4 parts of diethylenetriamine to the product of step (2), react at 60°C and 220r / min for 1 hour, then raise the temperature to 75°C and keep it war...
Embodiment 3
[0063] A nonionic self-emulsifying water-based epoxy curing agent and a preparation method thereof, the steps are as follows:
[0064] (1) Synthesis of hydrophilic intermediates: in parts by mass, 8.7 parts of N,N-di(3-aminopropyl)ethylenediamine was added to a three-necked flask with a stirring paddle, and 15.7 parts of polypropylene glycol Add diglycidyl ether into a three-necked flask filled with N,N-bis(3-aminopropyl)ethylenediamine, keep it under stirring at 60°C and 260r / min for 1.5 hours, then raise the temperature to 85°C for 3 hours , cooling discharge;
[0065] (2) In terms of parts by mass, 45.5 parts of liquid epoxy resin E-44 are added to the product of step (1), and the reaction is carried out at 70 ° C and 260 r / min for 1 hour to obtain a modified epoxy resin ;
[0066] (3) In terms of parts by mass, add 21.4 parts of tetraethylenepentamine to the product of step (2), react at 55°C and 260r / min for 2 hours, then raise the temperature to 75°C and keep it warm f...
PUM
| Property | Measurement | Unit |
|---|---|---|
| tack-free time | aaaaa | aaaaa |
| tack-free time | aaaaa | aaaaa |
| tack-free time | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More