EZHOU ANJEKA TECHNOLOGY CO.,Ltd

Dispersant Testing for Thermally Conductive Filler Pastes by Anjeka   Application Testing of Anjeka 6976 in Polyester Polyol Filler Pastes   Paste Formulation   Precipitated Alumina （3μm） Boron Nitride（2000 mesh） Magnesium Hydroxide（3 μm Grade） Remark Polyester Polyol 45 65.4 65.4 FH-2120 Dispersant 0.5 0.6 0.6 Anjeka 6976 Filler 54.5 34 34   Total 100 100 100     The dispersant was added to the resin and mixed until homogeneous. The filler was then introduced, and the mixture was dispersed using a high-speed disperser at 2500 rpm for 20 minutes.       Comparison of Viscosity Reduction by Different Dispersants Viscosity mpa.s（25℃） Precipitated Alumina Boron Nitride Magnesium Hydroxide Blank 2103 1289090 3196 Reference 9076 2103 734221 1730 6976 774 177250 1346     In polyester-based thermally conductive filler pastes, Anjeka6976 demonstrates superior viscosity reduction compared to the competitive product 9076.   Application Testing of Anjeka 6976 in Epoxy Resin Filler Pastes   Paste Formulation   Precipitated Alumina （3μm） Magnesium Hydroxide （3 μm Grade） Remark Epoxy resin 45 65.4 Sanmu 828 Dispersant 0.5 0.6 Anjeka 6976 Filler 54.5 34   Total 100 100     The dispersant was added to the resin and mixed until homogeneous. The filler was then introduced, and the mixture was dispersed using a high-speed disperser at 2500 rpm for 20 minutes.     Comparison of Viscosity Reduction by Different Dispersants Viscosity mpa.s（25℃） Precipitated Alumina Magnesium Hydroxide Blank 24456 72022 Reference 9076 13661 13943 6976 14152 9849   In epoxy-based thermally conductive pastes, Anjikang 6976 performs comparably to the competitive product. However, for magnesium hydroxide (Mg(OH)₂) dispersion, it demonstrates superior viscosity reduction compared to 9076.        

Anjeka Experimental Report (No：2025071201)   Anjeka 6503 Project: Dispersant Comparison Category: Testing of Dispersant Performance in Polyester Resin for Titanium Dioxide Dispersion and Let-Down Stability Personnel: R&D Department Date Submitted: Sep. 28, 2025 Abstract   This study evaluates the performance of selected Anjeka dispersants for dispersing titanium dioxide and carbon black in a polyester resin baking enamel system. The assessment is based on two key observations: the color difference in rub-up tests on drawn-down panels and the degree of pigment flooding in the paste stored in the container.A color paste was prepared by grinding polyester resin with titanium dioxide and carbon black. This paste was then let down into a paint, which was placed under observation. The paint formulated with Anjeka dispersant, after standing at 60°C for 3 days, exhibited a smaller color difference in rub-up tests compared to the reference sample.   Key words:dispersant, Rub-up Color Difference     1.Objective To evaluate and select a dispersant with superior anti-flooding performance for titanium dioxide dispersion in a coil coating system, by conducting a comparative study against the competitive dispersant 2311.   2.Experimental Plan The dispersants are to be incorporated into a polyester resin system to prepare color pastes. The state of these pastes will be observed after standing. Subsequently, the pastes will be let down into paints. Draw-down panels will be prepared and subjected to rub-up tests to evaluate color difference.   3.Results and Discussion 3.1 Procedure According to Table 1 below, prepare separate white and black color pastes (using AJK 6503 and the competitor 2311 for the white pastes, and AJK 6040 for the black paste). Measure the viscosity after grinding is complete. Prepare the gray paint according to Table 2. Perform a rub-up test on the draw-down panel and measure the color difference of the rubbed area using a colorimeter. Place the paste sample in a 60°C oven for 3 days for observation. 3.2 Performance Testing   3.2.1 Experimental Formulation   Table1 Black & White Monochrome Formulations   White paste Black paste Remarks polyester resin 30 60 Wanbang 3871 solvent 8.5 27 Xylene dispersant 1.5 3 6503/2311 6040 titanium dioxide 60   Lomon R996 Carbon black   10 Mitsubishi MA100 Total 100 100     Prepare the paste according to the formulation in Table 1. Add glass beads with a diameter of 3 mm at a 1.2:1 bead-to-paste mass ratio. Place the mixture in a shaker for dispersion and grind until the fineness is ≤ 5 μm.   Table 2. Formulation for Let-down of Black & White Monochrome Pastes   Amount Remarks Polyurethane Resin 50 3871 Amino Resin 15 5717 solvent 13 Xylene White paste 20   6040 black past 2   Total 100   Mix the components uniformly according to Table 2 to prepare the gray paint.   3.2.3 Results and Discussion   Color Paste Comparison mpa.s（25℃） White paste   competitor 2311 AJK6503 Viscosity 1178 1226 Fineness ≤10 μm ≤ 10 μm Anjeka dispersant 6503 shows viscosity reduction performance essentially equivalent to that of the reference dispersant 2311.   at 60°C for 3 days     Comparison of Rub-up Tests on Draw-down Panels: ∆E Reference 2311 White Paste + AJK 6040 Black Paste AJK 6503 White Paste + AJK 6040 Black Paste Initial Rub-up Color Difference 2 1.4 Rub-up Color Difference After Heat Aging 2.2 1.5 Color Difference Before and After Heat Aging 0.78 1.6   6503: Before/After Heat Aging        2311: Before/After Heat Aging                                Anjeka6503 exhibits a smaller rub-up color difference both before and after heat aging compared to the competitive product 2311. Although reference sample 2311 shows a slightly smaller color difference before and after heat aging, severe flooding (whitening) was observed on the panel surface in both cases.   Anjeka Dispersant                                      Reference: 2311 No delamination or flooding observed.      Severe Flooding   4. Conclusions Testing demonstrates that in the coil coating system, the white paste prepared with Anjikang dispersant Anjeka 6503 and the black paste prepared with Anjeka 6040 exhibit excellent viscosity reduction and outstanding stability against pigment flooding.

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.    

Anjeka Experimental Report（No.：2025052701）           Anjeka Dispersant Project: Dispersant Comparison Category: Dispersant Testing Personnel: R&D Department Date Submitted: May 28, 2025   1. Objective To compare the viscosity reduction effectiveness of different dispersants in a solvent-free, polyether polyol-based ground calcium carbonate (GCC) filler paste system.   2.Procedure Prepare individual pastes using the following Anjikang dispersants: 6500 6402 (100%) 802 6501A 6976 6860 Compare the viscosities of the resulting pastes to evaluate dispersant performance.   3.Result and Discussion   3.1Method Prepare the polyether polyol paste according to the formulation and process detailed in Table 1. Measure the viscosity after the paste has cooled to ambient temperature.，   3.2 Performance Testing   3.2.1Formulation   Table 1. Formulation of Polyether Polyol Paste   Amount Remark Polyether Polyol 34.5 PPG-3000 Dispersant 0.5 Anjeka Dispersant Ground Calcium Carbonate 65 600 - 800 mesh Total 100       According to the formulation in Table 1, add the polyol and dispersant to the mixing vessel. Begin mixing at 500 rpm for 5 minutes. Slowly add the filler to the mixture, then increase the speed to 2500 rpm and disperse for 10 minutes. Once the temperature of the mixture has decreased to room temperature, measure the final viscosity.   3.2.2 Result and Discussion   Viscosity Camparison： Mpa.s（28℃） Blank Anjeka 6500 Anjeka 6402A（100%） Anjeka 802 Anjeka 6501A Anjeka 6976 Anjeka 6860 Viscosity 79028 8283 12853 11187 19851 14329 19804 Appearance after 12h at RT No Flow Flow Flow Flow No Flow No Flow No Flow at 60°C for 2 days   6950 8426 6903 10902 7522     33932     no sedimentation Water Separation and Sedimentation Water Separation and Sedimentation Water Separation and Sedimentation Water Separation and Sedimentation no sedimentation   4.Conclusion All tested Anjikang dispersants exhibited effective viscosity reduction in this system. Anjikang 6500 showed the best performance and was the most effective at reducing viscosity in the polyether polyol-based GCC filler paste.

Formula for a Resin-Free Color Paste in an n-Butanol System Prepared with Anjeka Dispersant       Titanium Dioxide R996 Carbon black MA100 Organic Red 254 Phthalocyanine Blue 15:4 Phthalocyanine Green PG7 Remark Solvent 24 55 55 68 63 n-Butanol Dispersant 6 15 15 10 12 Anjeka6045 Anjeka6881 Anjeka6860 Pigment 70 30 30 20 25   Total 100 100 100 100 100       Once the material mixture was prepared, glass beads with a diameter of 2 mm (1.5 times the mass of the paste) were added, and the mixture was dispersed by shaking for 2 hours.   Stability Testing of a Resin-Free Color Paste in an n-Butanol System Prepared with Anjeka Dispersant       Initial Fineness ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 Fineness after 7 days ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10   The resin-free color paste in n-Butanol, prepared with Anjeka dispersant, showed minimal changes in viscosity and particle size after heat aging, demonstrating excellent storage stability. Dispersant 6860 is more suitable for inorganic pigments, whereas 6045 and 6881 are more versatile.      

Dispersant Testing of Anjeka for PVC Paste Resin White Paste Tested Dispersants: Anjeka-6976, Anjeka-6043A   Testing of White Paste Based on PVC Paste Resin   Paste Formulation   Reference 9076 Anjeka 6976 Anjeka 6043A Blank Remark Resin 36 36 36 36 PVC paste resin Plasticizer 23.5 23.5 23.5 23.5 DOP Dispersant 0.5 0.5 0.5   Anjeka titanium dioxide 40 40 40 40 Lomon R996 Total 100 100 100 100     The dispersant was added to the resin and mixed homogeneously. Subsequently, titanium dioxide was introduced, and the mixture was dispersed for 5 minutes using a high-speed disperser at 2500 rpm.           Comparison of Viscosity Reduction by Different Dispersants 30℃，mpa.s Initial Viscosity Viscosity after 24 Hours Blank 38000 45000 Reference 9076 12000 14200 6976 9200 11200 6043A 6000 7360   In the PVC paste resin white paste, Anjeka dispersants 6976 and 6043A demonstrated superior viscosity reduction compared to the competitive product 9076.   Application of Dispersant Anjeka 6042 in Resin-Free Color Paste with Low-Polarity Ester Plasticizer     Testing of Plasticizer-Containing,Resin-Free Color Paste   Formula for a Color Paste in Dibutyl Phthalate with Anjeka 6042   White paste Black paste Red paste Remark Dibutyl Phthalate 35 60 70   Dispersant 5 15 10 Anjeka 6042 White pigment 60     Lomon R996 Black pigment   25   Mitsubishi MA100 Red pigment     20 Organic red 48:2 Total 100 100 100       Once the material mixture was prepared, glass beads with a diameter of 2 mm (1.5 times the mass of the paste) were added, and the mixture was dispersed by shaking for 2 hours.   Viscosity and Fineness of the Dibutyl Phthalate Color Paste after 7-Day Storage at 50°C Initial Fineness ＜10 ＜10 ＜10 Fineness after 7 days ＜10 ＜10 ＜10 The dioctyl terephthalate color paste prepared with Anjeka 6042 showed minimal changes in viscosity and particle size after heat aging, demonstrating excellent storage stability.   Application Testing of Anjeka-8103 as a Bake-Free Agent for PVC Plastics     Cures at Low Temperatures Non-Sagging Low Dosage Requirement Easy Viscosity Recovery Testing of Bake-Free Formulation for PVC Testing Formulation   Anjeka 8103 Blank Remark PVC Paste Resin Compound 100 100 PVC paste resin Bake-Free Formulation 0.1 0 Anjeka 8103   The dispersant was added to the paste and mixed homogeneously using a high-speed disperser at 2000 rpm for 2 minutes. The flow state of the mixture was then observed after different standing times.     Comparison of Viscosity and Fluidity   Stand: 5 min Stand: 5 min Stand: 5 min Anjeka 8103 Viscosity mpa.s（25℃） 25000 48000 100000 Sag Resistance ㎛ 675 ＞875 No Sag in Inverted Container Test Blank Viscosity mpa.s（25℃） 6000 6000 6000 Sag Resistance ㎛ 200 200 200                                  No Sag in Inverted Cup Test                       Regains Fluidity Upon Agitation