EZHOU ANJEKA TECHNOLOGY CO.,Ltd

While formulators often pour significant effort into pursuing "visible" performance indicators like high gloss, high hardness, and fast drying, an often-underestimated "invisible hero" – the substrate wetting agent – fundamentally determines the success or failure of a coating. It doesn't directly contribute to final properties but lays the first cornerstone for the perfect presentation of all performance characteristics. Especially today, with tightening environmental regulations and waterborne applications reaching more difficult-to-adhere substrates, precise wetting solutions have become more critical than ever. 1. Poor Wetting: The Source of Those "Familiar Yet Headache-Inducing" Coating Defects When a coating cannot spread evenly on a substrate, problems follow one after another. Industry research generally indicates that poor wetting is a common cause of various film defects. Cratering and Fisheyes: Localized surface tension imbalance causes the coating to retract from that area, forming crater-like defects. Poor Adhesion: The coating fails to fully penetrate and anchor into the microscopic pores of the substrate, leading to weak bonding. Poor Leveling: Uneven coating spread makes it difficult to eliminate issues like orange peel and brush marks. Uneven Penetration (Porous Substrates): Such as on wood or mortar, leading to uneven color and gloss differences. As waterborne technology is applied to low surface energy substrates like plastics, composites, and parts with old coatings, these challenges are further amplified. Traditional wetting agents often fall short. How can we systematically solve this? 2. Beyond "Surface Tension": The Art of Balancing Dynamic Wetting and Compatibility Selecting a wetting agent involves far more than just looking at a static surface tension value. The key lies in dynamic surface tension reduction capability. An excellent wetting agent should quickly migrate to the newly formed liquid-solid interface, effectively reducing interfacial tension at the moment of application, and driving the liquid to spread forward. This is one of the core design logics behind Anjeka's wetting agent products – ensuring effectiveness within the critical time window of application. However, while pursuing efficient wetting, one must be wary of "side effects." Poor compatibility between the wetting agent and the system can lead to cratering, foam stabilization, or affect intercoat adhesion. Therefore, an ideal wetting agent must achieve a delicate balance between "efficient migration" and "system harmony." Anjeka products, through molecular structure design, aim for broad compatibility with various waterborne resin systems (such as acrylics, polyurethanes, etc.), maximizing wetting efficiency while minimizing interference with system stability. 3. Anjeka Wetting Agents: A Solution Framework for Complex Scenarios Based on a deep understanding of wetting mechanisms, Anjeka's wetting agent product line is dedicated to providing targeted support for different application scenarios: For Low Surface Energy Substrates like Plastics and Metals: Our products focus on enhancing dynamic wetting capability, helping waterborne coatings spread effectively and laying the foundation for subsequent adhesion promoters to work. For Porous Substrates like Wood and Concrete: The emphasis is on rapid penetration and uniform distribution to avoid appearance and performance issues caused by uneven liquid absorption by the substrate. In High-Speed Printing Scenarios (e.g., Flexo, Gravure Inks): Rapid wetting capability is crucial to ensure the clarity and uniformity of printed patterns. We recommend incorporating the wetting agent into the evaluation system early in the formulation development stage. Add it in the early stages of paint mixing and ensure thorough dispersion. The dosage needs to be optimized through gradient experiments based on the specific resin system, substrate properties, and process conditions, with a conventional exploration range between 0.1% and 1.0%.   As the wave of waterborne technology enters deeper waters, every detail of the formulation matters for the final product's market competitiveness. Substrate wetting, this seemingly basic step, is precisely the key control point for avoiding batch quality incidents and enhancing product applicability. Choosing a suitable wetting agent is like selecting a reliable "opening act" for your coating. It works silently in the background but determines whether the entire performance's stage is level and stable.   What substrate's waterborne coating challenge are you currently tackling? Is it plastic adhesion or wood penetration? Welcome to discuss your specific application scenarios and pain points with us.

Beyond Viscosity Control: A Strategic Approach to High-Load Inorganic Filler Systems   For technical and product managers in the coatings and inks industry, achieving the optimal balance in a formulation is a constant challenge. Increasing inorganic filler (extender) content is a proven path to reduce raw material costs, improve film properties like hardness and sandability, and adjust rheology. However, this strategy often hits a wall: skyrocketing viscosity, severe settling during storage, and poor shelf-life stability. The conventional dispersant may no longer suffice. This article explores the core challenges of high-load filler systems and introduces a targeted dispersant technology designed to break through these limitations, enabling more robust and economical formulations.   1. The Viscosity-Settling Trade-off in High-Filler Systems At high pigment volume concentrations (PVC), the interactions between inorganic filler particles (such as calcium carbonate, talc, barytes, alumina, etc.) become dominant. Without effective wetting and dispersion, these particles form a fragile network structure, leading to excessively high paste or millbase viscosity. This not only complicates manufacturing (higher energy consumption, slower grinding) but also limits the final application properties. Conversely, simply reducing viscosity without ensuring colloidal stability invites another problem: hard settling and sagging. The result is poor “can stability,” requiring extensive re-stirring before use, and potential application defects. The formulator’s goal is to find an additive that simultaneously disrupts the filler network to reduce viscosity and provides long-term stabilization against settling.   2. Mechanism: How Specialized Dispersants Work Standard dispersants often struggle under high filler loads. What’s needed is a dispersant with a strong anchoring group specifically designed for inorganic surfaces and a polymeric chain that provides robust steric hindrance. Products like Anjeka’s 6700 series (e.g., 6710, 6700, 6700A) are copolymer solutions containing acidic groups. They adsorb firmly onto inorganic pigments and fillers, breaking down agglomerates and preventing re-flocculation through steric stabilization. This dual action is critical: Network Breakdown: By de-agglomerating particles, the inter-particle friction is reduced, leading to significant viscosity reduction, even at filler loads exceeding 60-70%. Long-Term Stability: The steric barrier maintains particle separation over time, resisting the gravitational force that causes settling. This translates to excellent shelf-life and consistent “in-can” performance from first to last use. 3. Application Spectrum: From Water to Solvent, PU to Epoxy The need for high-filler, low-viscosity systems spans across technologies. Therefore, a versatile portfolio is essential: Water-based Systems: For furniture primer, architectural coatings, or industrial bases, dispersants like Anjeka 6220 are recommended for their exceptional viscosity reduction in high-filler systems. Laboratory tests have demonstrated its efficacy in stabilizing challenging fillers like precipitated alumina and magnesium hydroxide at high concentrations. Solvent-based & 100% Solids Systems: In industrial coatings, printing inks, and unsaturated polyester (PE) systems, the Anjeka 6700 series offers reliable performance. They are particularly effective in preventing settling and improving can appearance. Notably, Anjeka 6700 addresses the specific issue of greenish discoloration in PE coatings. 2K Polyurethane & Epoxy: For high-build primers and fillers in demanding applications, products like Anjeka 6910 are engineered for strong viscosity reduction and long-term storage stability in highly filled systems. Its variant, Anjeka 6911, further solves potential speckling issues in high-humidity environments. 4. Formulation Advice and Best Practices To maximize the benefits of these high-performance dispersants, consider the following guidelines: Incorporation: Always add the dispersant to the grinding vehicle before introducing pigments and fillers. This ensures optimal wetting from the start. Dosage: Start with recommended levels based on active content (typically 2-4% on TiO₂, 5-10% on inorganic pigments/fillers) and optimize through ladder experiments for your specific formula. System Compatibility: Be aware that high-acid-value dispersants can potentially catalyze crosslinking in stoving enamels or affect drying in PE systems. Always verify storage viscosity and drying time in your final formulation.   Are you pushing the limits of filler content in your formulations but held back by viscosity or stability issues? The right dispersant can be the key to unlocking higher performance and better economics.   Contact Anjeka Technical Support today to discuss your specific system challenges. We can provide tailored product recommendations and arrange for evaluation samples to help you validate the performance in your lab.    

Anjeka Experimental Report (No.: 20260323) Anjeka Experiment Item: Dispersant Testing Experiment Category: Testing of Dispersant Performance in Acrylic Water-Based Flexographic Ink and Paint Coating Carbon Black – Dispersibility and Stability Evaluation Experimenter: Technical Department Date of Submission: March 2026 1. Experimental Objective The customer's sample slurry is an acrylic-based system using Cabot 300 carbon black with a carbon black content of 50%. The target carbon black content is 35%. Before sample preparation, the slurry must be thoroughly homogenized. 2. Experimental Protocol After sample preparation, the following requirements must be met: Zahn cup viscosity: 12–18 s (corresponding to rotational viscometer reading of 200–300 mPa·s) No wetting agent required Fineness:

Technical Background: Challenges for PU Flooring in Tropical Climates   In tropical regions like Southeast Asia, high humidity and temperature pose severe technical challenges for Polyurethane (PU) flooring applications. The reaction between moisture and isocyanate components easily generates $CO_{2}$ bubbles, which, combined with the high viscosity of solvent-free systems, makes micro-bubbles difficult to escape naturally. If not effectively managed, the cured coating will exhibit defects such as pinholes, craters, or even delamination, severely impacting project acceptance.   Silicone-Free Defoamers: The Key to Inter-coat Adhesion For self-leveling floors and anticorrosive coatings, the choice of defoamer is critical. While silicone-based defoamers are efficient, they often cause fisheyes or reduce recoat adhesion in multi-layer applications. ANJEKA-5520, a 100% active content silicone-free polymer defoamer, provides a more reliable alternative.   100% Active Content: Free of diluents, ensuring effectiveness in high-viscosity resins even at minimal dosages. Silicone-free Structure: Eliminates fisheye defects associated with traditional silicone products, ensuring excellent recoatability and bonding reliability. Physical Consistency: Maintains a density of $0.80-1.10 g/cm3 at 23 ˚ C, allowing for easy and uniform dispersion in formulations.   Processing Guide: Handling High Shear and Storage Stability In industrial production, ANJEKA-5520 demonstrates excellent process adaptability. For manufacturers in Southeast Asia, long-term product stability is key to reducing after-sales complaints. Incorporation: For optimal performance, adding the defoamer prior to the grinding stage is recommended. If added later, sufficient shear force must be applied to ensure proper dispersion. Storage Stability: The product remains stable for up to 12 months, resisting separation or precipitation. Temperature Control: Despite the hot climate in SEA, if exposed to low temperatures below 5 ˚ C during transit, turbidity may occur; simply heating to 20˚ C and mixing thoroughly restores clarity without affecting active performance.   For PU flooring professionals in Southeast Asia, ANJEKA-5520 not only addresses the pain point of micro-bubbles on-site but also reduces production complexity through its stable physical parameters (recommended dosage of 0.1-1.0%). Whether in high-speed mixing, roller coating, or casting, it ensures the ultimate integrity of the coating.

Anjeka Experimental Report     Study on the storage stability of ceramic ink     Experimental project: Study on the storage stability of ceramic ink Experimental category: Dispersant, anti settling agent testing Experimenter: Product Application Engineer Xinzhong Zhai   Abstract:Ceramic inks were prepared using Anjikang dispersants 6042A and 6042B, anti-settling agents 4311, 4360, 6701, 972, and bentonite. The stability of the ceramic inks was evaluated by measuring the particle size, viscosity, centrifugal sedimentation rate, and sedimentation rate after thermal storage, as well as the hard settling rate. The experimental results indicate that the white oil-based ceramic ink prepared with Anjeka 6042B dispersant exhibits the best storage stability. Keywords: dispersant, anti settling agent, particle size, viscosity, centrifugal precipitation rate1.   1.Objective Ceramic inks were prepared using different formulations incorporating Anjeka dispersants 6042A and 6042B, anti-settling agents 4311, 4360, 6701, 972, and bentonite. The stability of the ceramic inks prepared with different formulations was investigated by evaluating particle size, viscosity, centrifugal sedimentation rate, as well as sedimentation rate and hard settling rate after thermal storage. 2. Experimental Protocol Reagents: Ceramic colorant (encapsulated red, Guose), dispersants Anjeka 6042A and Anjeka 6042B, anti-settling agents Anjeka 4311, Anjeka 4360, Anjeka 6701, 972, bentonite, white oil, cocoate, isopropyl laurate, ceramic pigment, and Mirui ceramic ink sample. Instruments: Centrifuge (Model 80-2B, Jiangsu Jinyi Instrument Technology Co., Ltd.), nanoparticle size analyzer (Model BeNano 90, Dandong Bettersize Instruments Co., Ltd.), oscillating disperser, rotational digital viscometer, ultrasonic disperser, oven. Preparation of Ceramic Ink White oil No. 10, cocoate, and dispersant were mixed in a certain proportion until homogeneous. The ceramic colorant was then added and mixed thoroughly. Zirconia beads (0.3 mm diameter) in an amount three times the mass of the slurry were added, and the mixture was placed in an oscillating disperser for dispersion. Thermal Storage The inks were stored in an oven at 50°C for 72 hours. Testing Methods Particle Size Measurement of Ceramic Colorant in Ink: The ground slurry was diluted 10,000 times with white oil. The particle size of the colorant in the diluted ink was measured using a nanoparticle size analyzer. Centrifugal Sedimentation Rate: The inks were centrifuged at 3000 rpm for either 5 minutes or 10 minutes as specified. Viscosity: The viscosity of the inks was measured at 15°C using a rotational viscometer.   3. Experimental Formulations and Methods 3.1 Effect of Different Dispersants and Dosages on Centrifugal Sedimentation Rate Table 1. Experimental Formulations for Different Dispersants and Dosages Raw Material 1# 2# 3# 4# 5# 6# Supplier White Oil 42.5 43.35 44.2 42.5 43.35 44.2 Guose Cocoate 7.5 7.65 7.8 7.5 7.65 7.8 Mirui Dispersant 6042A 5 4 3       Anjeka Dispersant 6042B       5 4 3 Anjeka Encapsulated Red 45 45 45 45 45 45 Guose   3.1.1 Experimental Results and Discussion After 8 hours of oscillating grinding, the particle size, viscosity, and centrifugal sedimentation rate were measured. The results are shown in Table 3. Table 3. Particle Size, Viscosity, and Centrifugal Sedimentation Rate   1# 2# 3# 4# 5# 6# Z-Average Particle Size（nm) 225.54 369.99 275.08 295.26 273.09 292.15 Viscosity（mpa.s) 291.9 551. 1 4340 52.64 421. 1 6076 Centrifugal Sedimentation Rate%（5min) 13. 12 13.48 21.30 5.36 12.39 21.36 Centrifugal Sedimentation Rate%（10min) 17. 11 24.18 32.44 7.69 17.29 26.28  

1. Viscosity Reduction Effect Prepare a water-based resin-free pigment paste and compare the viscosity reduction performance of different dispersants. 2. Effect on Gloss Add the resin-free pigment paste into different resin systems (water-based alkyd resin, styrene-acrylic emulsion, polyurethane dispersion, and epoxy emulsion) to prepare finished paints. Apply the paints on test panels using a drawdown bar. After drying, measure the gloss. 3. Effect on Blistering After Water Immersion After the coated panels are dried, immerse them in water for 7 days. Observe and record the blistering area on the panel surface. 4. Effect on Adhesion After Water Immersion After water immersion, perform a cross-cut test on the coated panels using a cross-cut tester, followed by tape pull-off. Observe and record the area of coating detachment.   Water-Based Resin-Free Pigment Paste Testing     Water-Based Resin-Free Pigment Paste Formulations Carbon Black Paste Titanium Dioxide Paste (R996) Material 6072 6208 578 Material 6072 6208 578 Water 50.9 50.9 50.9 Water 20.7 20.7 20.7 Propylene Glycol 2 2 2 Neutralizer DMEA 0.2 0.2 0.2 Dispersant 17.1 17.1 17.1 Dispersant 4.1 4.1 4.1 Carbon Black MA100 30 30 30 Titanium Dioxide R996 75 75 75 Total 100 100 100 Total 100 100 100   Preparation Method After preparing the formulations, add an equal amount of glass beads. Place the mixture in a shaker and shake for 2 hours.   Fineness (μm)                                                                 6072                             578                               6208 Water-Based Resin-Free White Paste                            ≤15                               ≤15                                ≤15 Water-Based Resin-Free Black Paste                             ≤15                              ≤15                                 ≤15   In both black and white resin-free pigment pastes, Anjeka6072 achieved lower viscosity compared to 6208 and 578, indicating superior viscosity reduction capability.   Water-Based Resin-Free Gray Paste Formulation   6072 578 6208 Water-Based Resin-Free White Paste 10 10 10 Water-Based Resin-Free Black Paste 1 1 1   Preparation of Gray Paste The gray paste was prepared by mixing the white paste and black paste in a ratio of 10:1 (white : black) until a homogeneous mixture was achieved.   Gray Paint Formulation   6072 578 6208 water-based resin 64 64 64 Water 3 3 3 Water-Based Resin-Free Gray Paste   33 33 33   Mix the water-based resin, water, and gray paste in proportion until homogeneous to obtain the gray paint. Apply the paint on a sanded tinplate panel at a wet film thickness of 200 μm.   Gloss Test After Panel Drying Conclusion Anjeka 6072 exhibits gloss performance comparable to 6208 and superior to 578 across different resin systems, with the exception of the styrene-acrylic emulsion system, where it performs slightly less favorably than Xianchuang 578. Overall, Anjeka 6072 has a minimal impact on gloss.   Panel Performance Test After 7 Days of Water Immersion   Water-Based Alkyd Resin System   6072 578 6208 Blistering Area 20% 20% 20%         Cross-Cut Adhesion Test           Detachment Area

EZHOU ANJEKA TECHNOLOGY CO.,Ltd                                          professional additive manufaturer Experimental Record Form Experiment Name:  Viscosity Comparison of 6911A in Various Resin Systems & Silica Powder Temperature/Humidity:   Client:    / Applicant:Mr. Chen Experimental Date: March 23, 2026     objective: Color paste formula   Aluminum oxide,   boron nitride magnesium hydroxide         828 resin 30 22.85 30         solvent 15 36 15 Dimethyl: Butanol 4:1   dispersant 0.2 0.15 0.2         powder material 54.8 41 54.8         total 100 100 100         Experimental Method Stir at 2000 rpm for 15 minutes Test results alumina   6910A 6911A 26013002 26013003       Viscosity moa.s/8℃ 8299 553.3 4209 664       60 ℃ thermal storage for 1 day   6910A 6911A 26013002 26013003       Viscosity moa.s/10℃ 1992 774.3 2213 2435       Settlement situation Slight Soft Sedimentation Slight Soft Sedimentation Slight Soft Sedimentation Slight Soft Sedimentation         boron nitride   6910A 6911A 26013002 26013003       Viscosity moa.s/8℃ 8521 9738 6861 8299       60 ℃ thermal storage for 1 day   6910A 6911A 26013002 26013003       Viscosity moa.s/10℃ 10734 10070 8521 9849       Settlement situation no settlement Settlement 1/9   Settlement 1/7 Settlement 1/8         magnesium hydroxide   6910A 6911A 26013002 26013003       Viscosity moa.s/8℃ 110.7 774.6 332 553       60 ℃ thermal storage for 1 day   6910A 6911A 26013002 26013003       Viscosity moa.s/10℃ 553.3 553 110 664       Settlement situation Hard Settlement Hard Settlement Hard Settlement Hard Settlement       Conclusion For alumina systems, 6911A delivers the optimal viscosity reduction effect, exhibits the lowest viscosity after thermal storage, and ensures consistent anti-sedimentation performance across the board. In boron nitride systems, 6910A provides a moderate viscosity reduction effect while boasting the best overall stability of all tested additives. For magnesium hydroxide systems, 6910A achieves the most significant viscosity reduction; however, all tested formulations show poor anti-sedimentation performance after thermal storage.

EZHOU ANJEKA TECHNOLOGY CO.,Ltd                                                                       professional additives manufacturer Test Record Sheet Experiment Name: Anti-Sedimentation Test of Alcohol-Soluble Polyurethane Resin Pearl Paint Temperature/Humidity: 19/51 Customer: YunnanApplicant:  Ye Kai Experiment Date: March 15, 2026     Objective: To evaluate and select suitable additives for the customer's pearlescent paint system, using ethanol as the thinning solvent, such that the resulting mixture exhibits no visible stratification or settling within a 30-minute timeframe. Color paste formulation ① Alcohol soluble polyurethane resin 10 ② Alcohol soluble polyurethane resin 10 ③ Alcohol soluble polyurethane resin 10 ④ Alcohol soluble polyurethane resin 10 pearlescent powder 10 pearlescent powder 10 4330 polyethylene wax slurry 5 4320 polyamide wax slurry 2.5 Anjeka 6860 0.3 Anjeka 6881 0.3 pearlescent powder 10 pearlescent powder 10 isopropanol 10 isopropanol 10 isopropanol 10 isopropanol 10 ethanol 69.7 ethanol 69.7 ethanol 65 ethanol 67.5                                 Experimental Method 1. Formulation 1: Add 6860 dispersant and stir until homogeneous. 2. Formulation 2: Add 6881 dispersant and stir until homogeneous. 3. Formulation 3: First, mix 4330 with the resin and disperse at high speed until the fineness reaches