Anti-sagging performance of wax paste in epoxy and alkyd systems

Anjeka Experiment Report

(No.: 202605019)

Anti-Sagging Performance Test of Wax Paste in Epoxy and Alkyd Systems

Test Item: Anti-sagging performance of wax paste in epoxy and alkyd systems
Test Category: Thixotropic agent evaluation
Technician: Chen Shan, Technical Department
Submission Date: May 19, 2026

Abstract:

Epoxy and alkyd slurries were prepared using Anjeka polyamide wax paste 4312-20X. The anti-sagging performance was evaluated by measuring slurry viscosity and sagging thickness. The results show that Anjeka 4312-20X provides good anti-sagging performance in both epoxy and alkyd resin systems.

Keywords: Wax paste; Viscosity; Sagging

1. Objective

To evaluate the anti-sagging performance of Anjeka polyamide wax paste 4312-20X in epoxy and alkyd systems.

2. Experimental Scheme

Reagents:

Epoxy resin (Sample 601-60) – Mixed solvent (Xylene : n-Butanol = 4 : 1)
Alkyd resin (Sample 3370) – Solvent (Xylene)
Wax pastes: Anjeka 4312-20X, Competitor wax paste (sample from Wolong)

Instruments:

High-speed disperser
Rotational digital viscometer
Sagging tester

Viscosity Measurement:

Viscosity of the premix was tested at 25°C using a rotational viscometer.

3. Formulations and Methods

Table 1: Premix Formulation

Method: The above premix was dispersed at 2000 r/min for 15 minutes.

Table 2: Diluted Sagging Test Formulation

Method: The high-speed premix was diluted proportionally to prepare the slurry. Sagging thickness was measured using a sagging tester.

Table 3: Anti-Settling Test Formulation

Method: The above slurry was dispersed at 800 r/min for 15 minutes, then placed in a 60°C oven for 7 days to observe sedimentation.

3.1 Results and Discussion

Viscosity Comparison of Premix

Viscosity at 25°C (mPa·s)

As shown in the table above, in both systems, Anjeka 4312-20X exhibits slightly better thickening effect than the competitor wax paste.

Sagging Comparison of Slurries Prepared by Different Methods

In both systems, Anjeka 4312-20X shows slightly better anti-sagging performance than the competitor wax paste.

Sagging thickness (μm)

Note: Diluted sagging test using high-speed premix

Anti-Settling Comparison

After 7 days of hot storage (60°C)

In both systems, the anti-settling performance of Anjeka 4312-20X is essentially consistent with that of the competitor wax paste.

4. Conclusion

In both resin systems provided by the customer (epoxy and alkyd), Anjeka 4312-20X demonstrates slightly better thickening and anti-sagging performance than the competitor wax paste, while its anti-settling performance is comparable to the competitor.