Anjeka Experimental Report
(No：2025103101)
Anjeka4420
Project: Dispersant Comparison
Category: Dispersant Testing
Personnel: R&D Department
Date Submitted: May 28, 2025
1. Objective
Comparison of Anti-Sag Performance in Acrylic Emulsion: Version 4420 with Different Solvent Versions.
2. Experimental plan
2.1 Directly incorporate varying proportions of 4420 into the emulsion, mix thoroughly, and test for sagging.
2.2 First prepare a 50% pre-slurry of 4420, then add it to the emulsion and test for sagging.
Required Materials:
1. Acrylic emulsion: Double bond DB3422
2. Anjeka 4420 in three solvent versions (NMP/NBP/DMSO)
3. Solvent: BCS
4. Deionized water
Required instruments:
1. Flow hanging instrument
3.Result and Discussion
3.1Procedure
1. After adding different versions of 4420 to the emulsion according to the formulation in Table 1 below, manually mix thoroughly and test the sag thickness.
2. Prepare different versions of the 4420 pre-gel paste according to the formulation in Table 2. Then, following the formulation in Table 3, add the pre-gel paste to the emulsion. Disperse the mixture at 800 rpm for 5 minutes using a high-speed disperser. Finally, measure the sag resistance of the resulting material.
3.2 Performance Testing
3.2.1 Experimental Formulation
Table 1. Formulation for 4420 Additive
| 4420 content |
0.5% |
1% |
2% |
| emulsion |
100 |
100 |
100 |
| 4420 |
0.5 |
1 |
2 |
Table 2.4420 Pre-gel Paste Formulation
| |
4420 |
BCS |
Deionized water |
| Amount |
5 |
3 |
2 |
Table 3.4420 Pre-gel Paste Addition Formulation
| 4420 content |
0.5% |
1% |
2% |
| emulsion |
100 |
100 |
100 |
| Pre-gel Paste |
1 |
2 |
4 |
3.2.2 Result and Discussion
Comparison of Sag Resistance (μm):
4. Conclusions
1.All three Anjeka 4420 variants demonstrate significant anti-sag performance in this system. When added directly, the NBP-based version shows the best effect. When added as a pre-gel paste, the DMSO-based and NMP-based versions perform similarly, both outperforming the NBP-based version.
2.For both the DMSO-based and NMP-based versions, adding them as a pre-gel paste provides a significantly better anti-sag effect compared to direct addition.
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