EZHOU ANJEKA TECHNOLOGY CO.,Ltd

1. The Hidden Variable That Changes Everything Why does a top-performing defoamer in solvent-based systems cause craters in solvent-free epoxy? Why does the same leveling agent require completely different timing in the two systems? The answer lies in an often-overlooked variable: the presence or absence of solvent doesn’t just change the medium—it rewrites the rules of the game for additive behavior. 2. The Lost “Compatibility Buffer” Solvents act as a chemical buffer, dissolving additives and masking subtle polarity mismatches. In solvent-free systems, this buffer vanishes. Additives must engage in direct, “face-to-face” chemical dialogue with the resin. Any mismatch in polarity, solubility, or reactivity is dramatically amplified. A silicone defoamer incompatible with epoxy won’t disperse—it will form micro-droplets that become crater nuclei. 3. New Rules: The “Desolvation” Evaluation Framework Selecting additives for solvent-free systems requires a new mindset. We must establish “desolvation” criteria: Chemical Affinity First: Choose additives structurally similar to the resin or with specific interaction groups (e.g., OH/NH₂ for epoxy). Test Differently: Replace dilution tests with microphase compatibility testing (observe dispersion stability and clarity in the resin itself). Mind the Reaction: Ensure additives don’t interfere with curing chemistry. Additives are no longer “plug-in modules”—they are chemical building blocks of the formulation. 4. Putting It Into Practice: The Three-Stage Verification Theory means little without a clear path to implementation. Adopt this structured verification method: Screen: Use solubility parameters and molecular simulation to rank compatibility. Validate: Combine hot-stage microscopy and rheology to watch phase behavior and viscosity under heat/shear. Simulate: Test for defects under real application conditions (draw-down vs. spray). Only after this process can an additive “earn its certification” for solvent-free duty. 5. The Real Shift: From Finding Tools to Building Capability Mastering solvent-free systems isn’t about finding a “stronger” additive. It’s about building a new capability. We must move beyond the “compatibility crutch” that solvents provided and develop sharper chemical vision and process intuition. This demands new tools (like dynamic surface tension analyzers) and application-focused testing protocols. Success will belong to the teams that complete the transition from experience-based adaptation to systematic design.  

   EZHOU ANJEKA TECHNOLOGY CO.,Ltd professional additive supplier Test record sheet Test Name Performance Evaluation of Dispersants on Mitsubishi MA-100 Carbon Black Temperature/humidity   Customer   Conducted By Mr.Fan Test Date Nov.5 2025     Objection:Comparative Evaluation of 6062, 6062A, 6062B, and BYK163: Color Development, Heat-Aging Stability, and Fineness Color paste formulation           Sanmu 965 Hydroxy-Functional Acrylic Resin 60             Solvent Blend: S01 / S05 / S071 at a 1:1:1 Ratio 27             Dispersant 3 6062 6062A 6062B BYK163     MA-100 carbon black 10                             Procedure 1. Grind all formulation components together for 3 hours. 2. Measure the fineness of the resulting paste and record its visual appearance. 3. Apply draw-downs on black-and-white test paper to assess color development. Result Among the Anjeka dispersants, 6062A yields the darkest color. 6062B and 6062 perform similarly. When compared to the competitive product BYK163, all three Anjeka dispersants show superior performance, with BYK163 being the least effective.   Fineness＜um Fineness After Heat Aging Check for flow (Yes/No) Appearance After Heat Aging Draw-down Panel for Color Development Assessment     6062 10 10 Easily flowable Easily flowable with slight false body Qualified     6062A 10 10 Easily flowable Easily flowable with slight false body Excellent     6062B 10 10 Easily flowable Easily flowable with slight false body Qualified     BYK163 10 10 Easily flowable Easily flowable with slight false body Poorest                 Conclusion Color development performance ranking: 6062A (best) > 6062B ≈ 6062 > BYK163 (poorest).  

EZHOU ANJEKA TECHNOLOGY CO.,Ltd                                                                                            professional additive supplier Test record sheet Test Name Viscosity Reduction Testing for Unsaturated Polyester (UPE) Systems Temperature/humidity   Customer You xing Conducted by Mr. Feng Test Date Sep.1 2025     Objective Color paste formulation   1# 2#           Unsaturated polyester resin 50 40 Sample         Ground Calcium Carbonate 50 60 400 mesh         Dispersant 0.2 0.2                                           Procedure Mix at 500 rpm for 5 minutes under low temperature conditions (

 EZHOU ANJEKA TECHNOLOGY CO.,Ltd professional additive supplier Test record sheet Test Name Comparative Evaluation of Dispersants 6880 & 6881 against Reference 24000 in Polyurethane Systems for Inks Temperature/humidity   Customer   Conducted By Mr.Chen Test Date Sep.20 2025     Objective Formulation             Evonik Printex® 35 Pigment Red 48:2 Remark         PU resin 30 30 Lab Sample 3015H         Solvent 60.6 60.6 ethyl acetate         Dispersant 0.4 0.4 6881 6880 24000         Pigment 9 9           TOtal 100 100           Method 1.Sample 24000 is first dissolved in ethyl acetate at a 1:1 ratio (by weight). When used in formulations, the dosage of this pre-solution should be doubled to achieve the target active content. 2. Grind the color paste with 1.2 times its mass of glass beads for 4 hours. 3. Compare viscosity, color development, and stability. Result Color Paste Comparison   Black Red   Initial 6880 6881 Sample 24000 6880 6881 Sample24000   Fineness（μm） ≤10 ≤10 ≤10 ≤10 ≤10 ≤10   Viscosity mpa.s 8000 7800 7900 8200 8100 8300   Visual Color Development Assessment Dispersant 6881 yields the visually darkest paste. Dispersant 6881 yields the visually darkest paste.                     Black Red   at 60℃ for 7 days 6880 6881 Sample 24000 6880 6881 Sample 24000   Fineness（μm） ≤10 ≤10 ≤10 ≤10 ≤10 ≤10   Viscosity mpa.s 15600 13000 16500 18200 15320 15320   Visual Color Development Assessment Dispersant 6881 yields the visually darkest paste. Dispersant 6881 yields the visually darkest paste.                   Conclusion Dispersant 6881 delivers the best overall performance in this system for both black and red pigments.

 EZHOU ANJEKA TECHNOLOGY CO.,Ltd Professional Additive supplier Test Record Sheet Test Name Screening of Anti-Flooding Dispersants for Fluorocarbon Systems Temperature/humidity   Customer Ding da Conducted by Mr. Feng Date Sep.5 2025     Objective Formulation                 Fluorocarbon resin 60 Sample           Xylene 11             Butyl ester 11             Bentonite 0.7             Titanium dioxide 15 Sample           Carbon black 1 Sample           Medium Yellow 0.17 Sample           Leveling agent 0.2 7331           Defoamer 0.2 5680A           Dispersant 0.6                             Method After grinding, test for rub-up color difference and evaluate in-can flooding after heat aging. Result At 60°C for 3 days   6174 6062B 6161A Blend of 6040 and 6104S 6164A 6182 6976A Fineness(μm） ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 ＜10 Initial Rub-up Color DifferenceΔE 2.4 1.4 1.33 ＞3 0.85 0.2 0.11 Rub-up Color Difference After Heat AgingΔE         0.57 0.56 0.41 In-can Appearance         Stratified, slight black flooding observed. No delamination; slight white flooding                 Conclusion 6976A demonstrated the best performance against flooding and floating.

Formulation of a Resin-Free Aqueous Conductive Carbon Black Paste Prepared with Anjeka 6272 Dispersant     Black Paste Remark Deionized Water 81.9   Neutralizer 0.1 DMEA Dispersant 8 Anjeka 6272 Pigment 10 Conductive Carbon Black Total 100     After the materials are prepared, add 2 mm glass beads at 1.5 times the mass of the slurry and disperse by shaking for 10 hours.   Viscosity and Fineness After 7-Day Storage at 50 °C The resin-free waterborne conductive carbon black paste prepared with Anjeka 6272 exhibits excellent viscosity reduction and storage stability.     Particle Size（nm） Z-average D90 D100 Initial Particle Size 176 249 357 Particle Size After Heat Storage 195 262 450   Formulation of a Resin-Free Solvent-Based Conductive Carbon Black Paste Using Anjeka 6045 Dispersant     Black paste Remark Solvent 64.8 DMF Dispersant 13.2 Anjeka 6045 Pigment 22 Conductive carbon black Total 100     After the materials are prepared, add 2 mm glass beads at 1.5 times the mass of the slurry and disperse by shaking for 10 hours.     Viscosity and Fineness of the Resin-Free Waterborne Conductive Carbon Black Paste After 7-Day Storage at 50 °C Particle Size（nm） Z-average D90 D100 Initial Particle Size 276 349 557 Particle Size After Heat Storage 295 362 650 The resin-free solvent-based conductive carbon black paste prepared with Anjeka 6045 exhibits excellent viscosity reduction and storage stability.            

Two-component polyurethane (2K PU) coatings are widely used in applications that demand durability and high performance. As environmental regulations evolve and performance expectations rise, formulators are increasingly choosing between waterborne and solvent-based 2K PU systems. Understanding the fundamental differences between these two approaches is essential for making informed formulation decisions.   In practical use, waterborne and solvent-based 2K PU systems respond very differently to temperature, humidity, and application methods. Waterborne systems are more sensitive to environmental conditions but excel in low-VOC and indoor applications. Solvent-based systems provide greater tolerance during application and are often preferred in demanding or less controlled environments.   One of the most visible differences between waterborne and solvent-based 2K PU systems is their VOC profile. Waterborne systems are designed to significantly reduce solvent emissions, supporting regulatory compliance and safer working environments. Solvent-based systems, while still widely used, typically require stricter controls to meet environmental and safety standards.   In addition to formulation complexity, film formation and surface appearance further distinguish waterborne and solvent-based 2K PU systems. Solvent-based coatings typically deliver excellent flow and leveling with minimal adjustment, supporting high-gloss and smooth finishes. Waterborne systems can achieve similar appearance, but require precise control of evaporation, rheology, and surface tension to avoid defects such as foam or uneven leveling.   Both waterborne and solvent-based 2K PU systems offer high-performance polyurethane films, but their differences in formulation complexity, application sensitivity, and curing behavior must be carefully considered. Solvent-based systems provide broader tolerance and more predictable early performance, while waterborne systems excel in VOC compliance and sustainability—albeit with tighter process control requirements.   Choosing the right system—and optimizing the additive package—ensures reliable, defect-free coatings across all stages of production and application. If you’re looking to explore the best 2K PU solution for your specific needs, our technical team can provide guidance and recommendations tailored to your formulation challenges.

Organic thickeners exhibit shear-dependent behavior that significantly influences a coating’s flow, application properties, and overall performance. Their response under low-shear conditions differs fundamentally from their behavior at high shear, and this distinction is critical for formulators seeking predictable viscosity and stable rheology profiles.   At low shear, organic thickeners strengthen the coating’s internal network, increasing viscosity and maintaining stability. Under high shear, the same network momentarily relaxes, resulting in lower viscosity and better flow. This controlled, reversible response is what allows organic thickeners to perform consistently across different processing and application conditions.   For formulators, the key takeaway is that no single viscosity value tells the whole story. Organic thickeners must be evaluated across low-, mid-, and high-shear ranges to ensure the coating behaves correctly at rest, during application, and after film formation. Matching the thickener’s shear response to the coating’s requirements is critical for achieving stable, predictable performance.   In short, recognizing the dual behavior of organic thickeners is key to achieving predictable rheology. When the right thickener is paired with the right shear profile, coatings become easier to formulate, apply, and maintain across real-world conditions.