EZHOU ANJEKA TECHNOLOGY CO.,Ltd

In today's rapidly developing fields of printed electronics, photovoltaic backsheets, and smart wearable devices, conductive paste, as a key functional material, sees its performance stability directly determining the yield and reliability of the final product. However, many formulation engineers have faced this dilemma: a carefully formulated paste shows signs of separation, sedimentation, or even hardening into lumps after sitting in a storage tank for a few weeks; during high-speed printing or dispensing, poor rheological properties lead to uneven lines and reduced resolution. This is not just an aesthetic issue but a technical bottleneck affecting conductivity, adhesion, and even product lifespan. How to keep high-density, high-solid-content conductive fillers "suspended" for a long time, maintaining a uniform and stable working state, has become a common focus in the industry.   I. Why Does Conductive Paste "Stand Unsteady"? – The Scientific Logic Behind Sedimentation Conductive paste typically consists of conductive fillers (such as silver powder, copper powder, carbon materials), resin binders, solvents, and various additives. Due to the much higher density of conductive fillers compared to the organic carrier, they naturally tend to settle under gravity. Furthermore, van der Waals forces between particles can lead to soft agglomeration, further accelerating sedimentation and potentially forming hard sediment that is difficult to redisperse. Industry research shows that paste stability is a comprehensive reflection of particle size distribution, Zeta potential, system viscosity, and rheological characteristics. Simple thickening is not the best solution; improper rheological additives can severely affect the paste's printability, line edge definition, and post-cure conductive properties.   II. Anti-Settling ≠ Thickening: The Core Concept of Precise Rheological Control An ideal conductive paste needs to possess shear-thinning rheological properties: high viscosity at rest or during low-speed storage to effectively lock in fillers and prevent settling; rapid viscosity decrease during high-speed printing, stirring, or dispensing to ensure excellent processing fluidity. This requires that anti-settling thixotropic agents not only provide sufficient steric hindrance or network structure but must also be highly compatible with the resin system to avoid introducing side effects. For example, in demanding electronic encapsulation or touchscreen applications where transparency or color is critical, the additive itself should remain as "invisible" as possible, not affecting the final product's optical appearance.   III. Anjeka Solution: Injecting "Stable Genes" into Precision Electronic Pastes Addressing the application needs of conductive pastes, especially in oily epoxy resin systems, Anjeka Technology provides targeted rheological and dispersion solutions based on a deep understanding of material mechanisms. Precise Thixotropy, Preventing Settling Before It Happens: Anjeka 4410 is a thixotropic agent suitable for systems like conductive silver adhesives and silver pastes. Its characteristic is that it effectively improves the system's anti-settling and anti-sag properties while having minimal impact on the system's gloss and leveling. This means that while achieving good storage stability, it preserves the paste's original application and film-forming characteristics to the greatest extent. It can be used alone or, according to specific process requirements, synergized with materials like hydrophilic fumed silica to finely adjust the rheological curve. Synergistic Dispersion, Stabilizing the Foundation: Good anti-settling begins with excellent dispersion. Anjeka's dispersant product line, such as Anjeka 6040, Anjeka 6860, Anjeka 6881, etc., is recommended for electronic paste systems, helping to achieve uniform and stable dispersion of conductive fillers and pigments, reducing the risk of settling due to agglomeration from the source. The scientific combination of dispersants and anti-settling agents is the foundation for building a high-stability paste system. IV. Practical Recommendations: How to Choose the "Golden Partner" for Your Paste? System First: Clarify your main resin (epoxy, polyurethane, acrylic, etc.), primary solvent, and conductive filler type. Verify Compatibility: Any additive addition must undergo strict compatibility testing to observe whether it causes resin cloudiness, color change, or affects the curing reaction. Addition Method: It is recommended to add the anti-settling thixotropic agent before or during the grinding stage to ensure it is fully dispersed in the system and establishes a stable network structure. For dispersants, they should be mixed with the resin/solvent before adding pigments/fillers to achieve the best wetting effect. Performance Balance: Find the optimal balance between dispersion effect, anti-settling capability, final viscosity, and printability through stepwise addition experiments. Anjeka's technical support team can provide corresponding application advice and sample support. The stability of conductive paste is the bridge connecting formulation design and end performance. Choosing professional rheological additives is a key step in enhancing product competitiveness and reducing after-sales risks. If you are looking for solutions to problems like sedimentation or poor printing in conductive pastes, welcome to contact Anjeka Technology. We can provide you with: Free Samples: Obtain product samples like Anjeka 4410 suitable for your system. Technical Consultation: Communicate with our application engineers to obtain targeted formulation adjustment advice. More Materials: Request detailed technical data and application cases for additives specifically for electronic pastes. Take action now to make your conductive paste "as stable as a rock" from now on!

A Complete Solution from Deflocculation, Viscosity Reduction to High-Stability Storage   In the world of waterborne coatings and ink formulations, organic pigments are key to imparting vibrant colors, high transparency, and unique characteristics. However, compared to inorganic pigments, organic pigments possess higher specific surface areas and greater hydrophobicity, making them harder to wet and more prone to flocculation in waterborne systems. This leads to insufficient color strength, poor gloss, and storage-related back-graining. How can we enable organic pigments to stably and efficiently unleash their full color potential in aqueous media? The core solution lies in selecting a targeted, high-efficiency dispersant.   1. Dispersing Organic Pigments: Common Challenges & Performance Bottlenecks Under the Waterborne Trend With increasingly stringent environmental regulations, the shift to waterborne coatings and inks has become an irreversible trend. However, this transformation poses severe challenges to organic pigment dispersion technology: Difficult to wet: Organic pigment surfaces are typically hydrophobic, showing poor compatibility with aqueous media. This initial wetting difficulty impacts grinding efficiency. Prone to flocculation: Dispersed pigment particles easily re-aggregate (back-grain) due to Van der Waals forces, leading to reduced color strength, gloss loss, and potential floating/flooding issues. Foam stability: Certain dispersion processes may introduce excessive foam, affecting production and final film properties. False high viscosity: Inadequate dispersion results in falsely high viscosity and strong thixotropy, increasing energy consumption and limiting pigment loading, thereby impacting cost. These bottlenecks directly constrain the color performance, batch-to-batch consistency, and production efficiency of end products. General-purpose additives often fall short, necessitating a dispersant solution with a more targeted molecular design. 2. Mechanism Insights: How Does a High-Efficiency Dispersant 'Anchor' and 'Protect' Organic Pigments? The mechanism of an outstanding organic-pigment-specific dispersant is a precisely coordinated process: Precise anchoring: Its molecular structure contains groups with strong affinity for organic pigment surfaces (e.g., pigment-affinic groups), enabling rapid and firm adsorption onto the pigment surface to form a primary protective layer. Powerful wetting: Effectively reduces the interfacial tension between pigment and water, displacing air and moisture from the pigment surface to create favorable conditions for dispersion. Steric stabilization: After adsorption, the long-chain polymer portions extending into the aqueous phase form a thick hydration layer. This physical steric hindrance prevents pigment particles from approaching each other and flocculating – the key to achieving long-term storage stability. Electrostatic repulsion assistance (for some products): Combines with some charge repulsion to build an electrical double layer, further enhancing dispersion stability. Through this series of actions, fully individualized pigment dispersion is achieved with a narrower particle size distribution, laying the foundation for high gloss, high color strength, and high transparency. 3. Anjeka Solution Matrix: Matching Dedicated Dispersion Capabilities to Different Waterborne Scenarios Addressing diverse application needs (e.g., resin-free universal colorants, resin-containing millbases, low-foam requirements, extreme transparency demands), Anjeka offers a broad range of waterborne organic pigment dispersants. Their core values are reflected in: Outstanding specificity: Several products are specifically designed for organic pigments and carbon black. For example, Anjeka-6272 and 6270A demonstrate excellent dispersibility and color development for organic pigments and carbon black in pure water systems. Anjeka-6241 provides high dispersion stability for organic pigments and carbon black, along with exceptional viscosity reduction. High-concentration colorant expert: The series serves as the standard additive for producing stable, resin-free pigment concentrates (30-70% pigment content). These concentrates offer good compatibility for easy letdown into various waterborne resins. Comprehensive performance optimization: Not only solves dispersion issues but also significantly reduces viscosity, improves flow, increases pigment loading, and enhances final film gloss while reducing haze. Good compatibility & process adaptability: Some products show good compatibility with common waterborne resins, suitable for resin-containing grinding. Addition methods are clearly defined (pre-addition before grinding), facilitating easy process integration. 4. Selection & Validation: Translating Theoretical Advantages into Practical Benefits in Your System Faced with many options, a scientific selection and validation process is crucial: Define requirements: Are you preparing a universal resin-free colorant or a millbase for a specific resin system? Are your key focus areas viscosity reduction, color development, storage stability, or low foaming? Initial screening: Based on system characteristics (e.g., pH, resin type, presence of co-solvents) and performance priorities, conduct a preliminary selection using product data sheets. For example, consider Anjeka-6270A for foam-sensitive systems; consider Anjeka-6241 for high viscosity reduction and thixotropy elimination needs. Laboratory validation: This is an indispensable step. In parallel experiments, compare the impact of different products or dosage levels on key indicators such as initial fineness, millbase viscosity, color strength/development, changes in fineness/viscosity after hot/cold storage, and settlement behavior. The recommended dosage range is only a starting point; the optimal level must be determined experimentally. Anjeka's technical support can provide selection recommendations and experimental protocol references based on your specific pigment and system. Color is the first language of a product, and stable dispersion is the prerequisite for accurate color expression. If you are seeking a better solution for organic pigment dispersion, storage stability, or color development issues in waterborne coatings or inks, Anjeka's professional dispersant solutions deserve your in-depth exploration. Take action now to start a new chapter in color:   Free Samples: Tell us the organic pigment types and your system profile to receive targeted Anjeka dispersant samples for effective validation. Technical Data Sheets: Need detailed technical parameters and application guides for a specific product? Request them. Technical Exchange: Contact our application engineers to discuss your specific challenges and find customized solutions.                    

Leveling Agents for Waterborne Coatings and Inks: The Art of Selection for Perfect Appearance In the world of waterborne coating and ink formulations, leveling agents, though added in minute quantities, play a crucial role in determining the "first impression" and final performance of the film. From ensuring uniform spreading and eliminating craters and pinholes after spraying to achieving successful wetting on hard-to-adhere substrates, the choice of leveling agent directly impacts a product's application latitude and ultimate appearance quality. Faced with a vast array of products, how do you select the most suitable "leveling assistant" for your system? This article provides a systematic guide. I. The Core Mission of Waterborne Leveling Agents: Wetting and Leveling The function of leveling agents in waterborne systems revolves around two key points: Substrate Wetting: Reducing the surface tension of the coating/ink, allowing it to fully spread on the substrate surface. This is particularly critical for low surface energy substrates like plastics, metals, oily surfaces, or old paint films, preventing defects such as craters, crawling, and poor adhesion caused by poor wetting. Surface Leveling: During the drying process, by regulating surface tension uniformity, they promote film flow, eliminating brush marks, orange peel, and other defects to achieve a smooth, flat surface, often enhancing gloss. II. Main Types and Characteristics of Waterborne Leveling Agents Based on different chemical structures, common waterborne leveling agents mainly fall into the following categories, each with its own focus: Silicone Surfactants (e.g., Anjeka-7412, 7422, 7423): Core Advantage: Powerfully reduce surface tension, with outstanding substrate wetting capability, effectively solving stubborn cratering and spreading issues. For instance, they perform excellently on difficult substrates like waxed paper or oily steel. Characteristics: Typically do not affect recoatability, offer good transparency. Some models (e.g., 7423) have a wider pH stability range. Note: The formulation should contain a small amount of co-solvent to ensure its compatibility and effectiveness. Acrylic Leveling Agents (e.g., Anjeka-7361): Core Advantage: Broad compatibility, no effect on recoatability, minimal impact on system color. They effectively improve leveling, prevent craters, and do not cause haze in clear coats or color fogging in pigmented systems. Characteristics: Suitable for various waterborne, solvent-borne, and solvent-free systems, widely used in waterborne varnishes, industrial baking paints, and adhesives. A reliable choice for systems requiring complete transparency and recoatability. Wetting & Leveling Agents (e.g., Anjeka-7425A): Core Advantage: Combine wetting and leveling functions with strong versatility. While addressing leveling issues, they also provide a degree of substrate wetting capability. Commonly used in waterborne baking paints, adhesives, and ink systems, they can improve spray atomization and solve issues like spotting caused by insufficient wetting. III. Selection Guide: Based on Your System and Pain Points There is no "universal" leveling agent, only the "most suitable" one. Follow this logic for selection: Primary Judgment: Is Substrate Wetting the Main Challenge? Yes: If facing difficult-to-wet substrates like plastics, glass, metals, oily surfaces, or old coatings, prioritize silicone-based wetting agents (e.g., Anjeka-7412 or 7422/7423). They powerfully reduce surface tension to overcome spreading barriers. No: If substrate wetting is acceptable, and the main goals are film smoothness, high gloss, and crater prevention, then acrylic leveling agents (e.g., Anjeka-7361) or general-purpose wetting & leveling agents (e.g., Anjeka-7425A) may be more cost-effective and efficient choices. Key Consideration: Is Recoating or Intercoat Adhesion Required? For industrial paints, repair paints, etc., requiring multi-layer application, it is essential to choose products explicitly labeled as "not affecting recoatability and intercoat adhesion." Anjeka-7361, 7412, 7422, etc., all meet this requirement. Appearance Requirements: Is the System Sensitive to Transparency or Color? For high-clarity varnishes or light-colored paints, choose products that are transparent and do not cause haze or color fogging, such as Anjeka-7361, 7333, etc. System Specifics: pH Value, Solvent Content, Special Fillers? For wide pH systems, consider Anjeka-7423. In high co-solvent systems, note that the effectiveness of silicone products may decrease; consider Anjeka-7333. For formulations containing silica, Anjeka-7422/7423 offer better wetting. IV. Anjeka Waterborne Leveling Agent Solutions: Precise Matching for Diverse Needs Based on the above selection logic, Anjeka offers a series of market-proven waterborne leveling agent solutions: Tackling Tough Challenges, Powerful Wetting: For low surface energy substrates, Anjeka-7412/7422/7423 are reliable choices, significantly improving spreading and eliminating craters. Stable and Reliable, General Leveling: For most waterborne industrial paints, baking paints, and inks, Anjeka-7361, with its excellent leveling, recoat-friendliness, and transparency, is a classic choice. Balanced Functionality, Multi-Effect Agent: In waterborne baking paints and adhesives, Anjeka-7425A can simultaneously improve wetting and leveling, enhancing overall performance. Pursuing Slip, Enhancing Feel: When additional surface slip is needed, Anjeka-7333 can be added in combination with the above agents. In practical applications, for example, in waterborne metal baking paints, 7361 or 7412 are often recommended for topcoat leveling; in screen printing inks, 7425A, 7422, 7361, etc., can be used to address leveling and bubble issues; in adhesives, 7425A, 7422, etc., can improve roll coatability and anti-cratering performance. V. Usage Tips and Common Misconceptions Dosage: Follow the "less is more" principle, starting testing from the recommended lower limit (e.g., 0.05%) to find the optimal point. Addition Order: Most products can be post-added for easy adjustment. However, for best results, follow guidelines, such as adding in the final stages. Storage Note: Some silicone products may separate at low temperatures; restore to room temperature and mix well before use. Avoid Over-Reliance: Leveling agents can significantly improve issues, but if the formulation itself has serious flaws (e.g., poor resin compatibility, improper defoaming), address the overall formulation. Conclusion & Call to Action Leveling agents are the finishing touch in waterborne formulations. Choosing the right type yields twice the result with half the effort. Faced with complex application scenarios, a single product cannot handle everything; precise matching is key.   If you are seeking solutions for wetting, leveling, or cratering issues in your waterborne coatings or inks, or are unsure which product best suits your system, the Anjeka technical team is ready to support you: Free Samples: Obtain samples of products like Anjeka-7361, 7412, 7422, 7425A for targeted testing. Technical Consultation: Receive product selection and formulation advice based on your specific industry, resin system, and pain points. Documentation Access: Request detailed Product Technical Data Sheets (TDS) and industry application case studies. Contact us now, and let us help your waterborne products achieve a more perfect appearance and superior application experience!

The Secret to Waterborne Coatings "Standing Up": Selection and Application Analysis of water-based thixotropic agent   In the daily work of waterborne coatings formulation engineers, "anti-settling" and "anti-sagging" are a classic dilemma. Over-thickening affects leveling and application; insufficient thixotropy leads to storage separation and sagging on vertical surfaces, causing headaches. As environmental regulations tighten and waterborne systems become more widespread, the demand for high-performance rheology additives with minimal impact is increasingly urgent. How to choose a waterborne thixotrope that can precisely control "flow" without sacrificing coating appearance and application experience? Today, we delve deeper.   I. The "Role" of Waterborne Thixotropes: More Than Just Thickening The core value of a thixotrope is to impart "shear-thinning" rheological properties to a coating system. That is, it provides high viscosity under static or low shear conditions (e.g., storage, transportation) to prevent pigment settling; viscosity rapidly decreases under high shear (e.g., stirring, spraying) for easy application; after application, when shear force disappears, viscosity recovers to prevent sagging. For waterborne systems, common thixotropes include polyurea types, polyamide wax types, alkali-swellable acrylic types, etc. Their mechanisms differ: polyurea types primarily work through hydrogen bonding and entanglement, polyamide wax types are similar, while alkali-swellable acrylic types rely on entanglement and hydrophobic association. The key to selection lies in matching system requirements with additive characteristics. II. The "Three Qualities" of an Ideal Waterborne Thixotrope Based on extensive formulation practice, an excellent waterborne thixotrope typically needs to balance the following three points: Balance of Effect and Impact: Excellent anti-settling and anti-sagging performance is fundamental, but it should also minimize impact on final coating properties, such as gloss, transparency, water resistance, etc. For example, polyurea thixotropes show advantages in systems requiring high gloss or minimal color impact due to their colorless, transparent nature. Application Friendliness: The thixotrope should not hinder the application process. An excellent thixotrope provides good spray atomization, with fine mist, facilitating a smooth film. In actual tests of high-gloss aluminum powder baking paints, a suitable thixotrope can make the spraying process smoother, with less overspray, while ensuring anti-sagging properties. Broad Formulation Compatibility: Being compatible with various waterborne resin systems (e.g., epoxy emulsions, styrene-acrylic emulsions, hydroxypropyl emulsions, waterborne polyurethanes, etc.), and able to function stably for anti-settling even in special systems like resin-free pigment pastes, can significantly reduce formulation development complexity. III. Anjeka Waterborne Thixotrope Solutions: Precisely Addressing Diverse Scenarios Addressing the different needs of waterborne systems, Anjeka offers a diverse selection of thixotropes, with core products including the liquid polyurea thixotrope Anjeka 4420 and the paste polyamide wax dispersion Anjeka 4561. Anjeka 4420 (Waterborne Polyurea Thixotrope): Known for its transparency, minimal impact on gloss, and excellent spray atomization. It is particularly suitable for applications with high demands on appearance and application, such as waterborne industrial paints, hardware baking paints, and high-gloss aluminum powder paints. Experiments show it can significantly increase anti-sag film thickness in various resin systems while maintaining good coating gloss. For use, it is recommended to pre-mix with glycol ether solvent and water into a gel before addition for optimal performance. Anjeka 4561 (Waterborne Polyamide Wax Paste Thixotrope): Performs well in effect pigment (e.g., aluminum powder) orientation and anti-settling. It effectively reduces mottling, enhances film brightness, and provides excellent storage thixotropy and anti-settling properties. Widely used in waterborne automotive coatings, industrial paints, and other areas requiring metallic or pearlescent effects. Furthermore, depending on specific system polarity, pH, and process requirements (e.g., addition before or after grinding), other models are available to meet more precise rheological control needs. IV. Application Recommendations and Common Misconceptions Test First, Then Decide: The effect of a thixotrope is closely related to factors like the resin system, solvents, and pigments. Always test within your actual formulation to determine the optimal model and dosage. Pay Attention to Addition Method: Follow recommended methods, such as preparing the pre-gel for Anjeka 4420 or pre-diluting/adding directly for Anjeka 4561, to achieve stable and consistent results. Synergistic Effects: In some challenging systems, thixotropes can be used synergistically with other additives like dispersants to comprehensively address issues of settling, stability, and appearance. Rheology control is one of the essences of the art of coatings formulation. Choosing a suitable thixotrope can make your product stand out in terms of storage stability and application experience.   If you are looking for solutions to anti-settling and sagging issues in waterborne coatings, or want to know which Anjeka thixotrope is more suitable for your specific system, please feel free to contact us. We can provide you with: Free Samples: Obtain samples of products like Anjeka 4420 and 4561 for testing. Technical Documentation: Access detailed Product Technical Data Sheets (TDS) and application guides. Formulation Support: Consult with our technical engineers for targeted application advice. Take action now to make your waterborne coatings "stand" more steadily and "flow" more beautifully!

Anjeka Experimental Report (No.: 2025051003) Testing the Effect of Dispersants on the Storage Stability of Water-Based Inkjet Inks Experiment Item: Testing the Storage Stability of Water-Based Inkjet Inks Experiment Category: Dispersant Testing Experimenter: Shan Chen, Technical Department Submission Date: May 15, 2025 Abstract Water-based inkjet inks were prepared using Anjikang dispersants. The stability of the inks was evaluated by measuring the particle size and viscosity of the colorant in the inks, as well as the particle size, viscosity, and centrifugal color development after thermal storage. The experimental results indicate that the water-based inkjet ink prepared with Anjeka 6612 dispersant exhibits the best storage stability. Keywords: dispersant; particle size; viscosity 1. Experimental Objective To prepare inks using Anjeka dispersants for dye dispersion, and to evaluate the stability of the prepared inks by testing particle size, viscosity, filtration residue, and centrifugal color development. 2. Experimental Protocol Materials: Dyes (60 Red, 54 Yellow, 360 Blue), Anjeka dispersants, purified water, co-solvent, wetting agent. Instruments: Nano bead mill, high-speed disperser, nanoparticle size analyzer, rotational digital viscometer, oven, centrifuge, filtration equipment (Büchner funnel, vacuum pump). Preparation of Dye Paste: Purified water, co-solvent, wetting agent, and dispersant were mixed in a certain proportion until homogeneous. The dye was then added and dispersed uniformly, followed by grinding using a nano bead mill. Preparation of Ink: Purified water, co-solvent, wetting agent, and the dye paste were mixed in a certain proportion until homogeneous, followed by dispersion using a high-speed disperser. Thermal Storage: The inks were stored in an oven at 60°C for 14 days. Particle Size Measurement: The ground slurry was diluted 10,000 times with purified water. The particle size distribution of the dye in the diluted ink was measured using a nanoparticle size analyzer. Viscosity Measurement: The viscosity of the inks was measured at 25°C using a rotational viscometer. Filtration Test: A 1 μm pore size filter membrane was placed tightly on a Büchner funnel, and vacuum filtration was performed. Residue on the filter membrane was observed. Centrifugation Test: The inks were centrifuged at 3000 rpm for 30 minutes, and the color development difference between the upper and lower layers was compared. 3. Experimental Formulations and Methods Table 1. Dye Paste Formulation Raw Material Amount Remarks Purified Water 34.7   Co-Solvent 5 Glycerol Wetting Agent 0.3 Anjeka 7414 Dispersant 30 Anjeka 6612 Dye 30 60 Red, 54 Yellow, 360 Blue Total 100       The dye paste was prepared according to the formulation in Table 1 above and ground using a nano bead mill at 2800 rpm for 6 hours.   Table 2. Ink Formulation Raw Material 60 Red   54 Yellow, 360 Blue Remarks Purified Water 30.3 43.3 37.3   Glycerol 9 9 9   Ethylene Glycol 28 28 28   Ethylene Glycol Butyl Ether 1 1 1   7412 0.2 0.2 0.2 Anjeka Wetting Agent E-65 1.5 1.5 1.5 Wetting Agent Dye Paste  30 17 23 prepared with Anjeka 6612 Total 100 100 100       The inks were prepared according to the formulation in Table 2 above and dispersed using a high-speed disperser at 1000 rpm for 10 minutes.     3.1.1 Experimental Results and Discussion Particle Size Distribution Comparison of Dye Pastes particle size(nm) Z-Avg (nm) PDI D50 D90 D100   60 Red Initial 119.94 0.322 127.31 241.04 476.29 After 7 days thermal storage 125.68 0.269 125.22 288.52 551.73   54 Yellow Initial 118.18 0.164 119.65 197.66 307.16 After 7 days thermal storage 122.84 0.174 120.82 188.13 297.55   360 Blue Initial 107.6 0.264 118.25 246.85 651.73 After 7 days thermal storage 109.34 0.345 137 286.67 662.38 As shown in the table above, the particle size of the dye pastes prepared with Anjeka 6612 showed almost no change before and after thermal storage.   Particle Size Distribution Comparison of Inks particle size(nm) Z-Avg (nm) PDI D50 D90 D100   60 Red Initial 123.29 0.238 125.27 236.7 557.15 After 7 days thermal storage 146.42 0.26 113.98 183.12 557.15 After 14 days thermal storage 150.29 0.21 172.8 294.62 557.15   54 Yellow Initial 119.15 0.33 155.97 286.28 651.73 After 7 days thermal storage 158.56 0.19 149.55 283.24 651.73 After 14 days thermal storage 149.46 0.092 136.59 212.17 651.73   360 Blue Initial 108.29 0.323 90.82 182.22 651.73 After 7 days thermal storage 150.93 0.155 143.05 251.28 651.73 After 14 days thermal storage 148.69 0.156 148.6 247.56 651.73     As shown in the table above, the particle size of the inks prepared with Anjeka 6612 showed almost no change before and after thermal storage.   Ink Viscosity Comparison During Storage Viscosity (mPa·s) at 25°C 60 Red 54 Yellow 360 Blue Initial Viscosity 9 4 4 After 7 Days Thermal Storage 8 7 4 After 14 Days Thermal Storage 5 5 4   As shown in the table above, the viscosity of the inks prepared with Anjeka 6612 showed little change before and after thermal storage.   Filtration Test 100 g of ink was poured into a Büchner funnel and vacuum filtration was performed. The time required for the funnel to run dry was recorded.   Filtration Time (seconds) Filtration Residue After 7 Days Thermal Storage 15 No flocculation residue After 14 Days Thermal Storage 15 No flocculation residue     The ink exhibited a fast filtration rate after thermal storage, and no residue was observed on the filter membrane following filtration. This indicates that no flocculation or agglomeration leading to the formation of large particles occurred in the ink.   After the inks were subjected to thermal storage at 60°C for 14 days and then centrifuged at 3000 rpm for 30 minutes, the color development of the upper layer and the bottom layer was consistent, indicating that the inks did not stratify.   4. Experimental Conclusion The water-based inkjet ink prepared with Anjeka 6612 exhibits good storage stability, as summarized below: For the dye pastes and inks prepared with Anjeka dispersant 6612 using different dyes (60 Red, 54 Yellow, and 360 Blue), both the particle size and viscosity showed little change before and after thermal storage. The inks prepared with Anjikang dispersant 6612 exhibited fast filtration rates after thermal storage, with no residue or flocculation observed on the filter membrane. After thermal storage and centrifugation, the color development of the upper layer and the bottom layer of the inks prepared with Anjekadispersant 6612 remained consistent, confirming that the inks did not stratify.    

 EZHOU ANJEKA TECHNOLOGY CO.,Ltd Experimental Record Sheet Experiment Title  Screening of Dispersants for Aqueous Carbon Nanotubes Temperature / Humidity 23°C / 47% RH Customer  / Applicant  Chen Experiment Date  March 23, 2026     Experimental Objective: Customer requirements: D90 particle size: < 300 nm Total solid content: > 8.5% Viscosity: 2000–5000 cPs Dispersion medium: Deionized water Color Paste Formulation           Deionized Water 87             Wetting Agent 0.5 7414           Dispersant 7.5 6871 6881 6272 6240-50     Multi-Walled Carbon Nanotubes (MWCNTs) 5                             Experimental Method Samples were prepared using various dispersants. Glass beads were added and the mixtures were ground using a machine. The resulting samples were then tested and compared for various properties.   Test Results     Appearance D90 Particle Size (nm) Solid Content (%) Viscosity       6871 Severe pseudoplasticity, no flow 552.05 7.8 Severe pseudoplasticity, no flow       6881 Slight stirring restores fluidity 162 11 1562       6272 Slight stirring restores fluidity 11260 11 2403       6240-50 Slight stirring restores fluidity 12027 8 384.5                                                       实验结论:6881合格

How Does CPT Block Copolymer Technology Solve the Dispersion Stability Challenge in Water-based Dye Inks? In fields like digital textile printing and high-end signage, water-based disperse dye inks are rapidly gaining ground due to their vibrant colors and eco-friendly profile. However, the journey from dye powder to a stable, homogeneous ink is fraught with challenges: How to stably disperse nano-sized dye particles to prevent agglomeration and nozzle clogging? How to ensure batch-to-bitch color consistency and avoid sedimentation and color shifts after storage? The key to these problems often lies in a critical additive—the dispersant. Today, we delve into how a dispersion solution based on CPT block copolymer technology provides the foundational support for the high performance and stability of water-based dye inks.   I. The "Stringent" Demands of the High-Precision Inkjet Era on Dye Inks Inkjet printing technology is evolving towards higher precision, faster speeds, and broader substrate compatibility. This translates to near-rigorous physicochemical requirements for inks, especially water-based disperse dye inks: an extremely narrow particle size distribution (often requiring D90 < 200nm), excellent long-term storage stability (no viscosity increase, no sedimentation), outstanding color strength and transparency, and reliable jetting performance without clogging. Any instability in dispersion can lead to nozzle blockages, color banding, and inconsistent print quality, directly impacting production efficiency and end-user trust.   II. Steric Hindrance: The Core Mechanism for High-Stability Dispersion For water-based systems, especially those with high pigment/dye loading, electrostatic stabilization alone is often insufficient. The more reliable mechanism is steric hindrance. This mechanism requires the dispersant molecule to have a specific structure: one end contains powerful anchoring groups that firmly adsorb onto the dye particle surface; the other end consists of long-chain solvated tails composed of hydrophilic segments. When these tails extending into the aqueous phase overlap, they generate a repulsive force, acting like an "invisible protective umbrella" for each dye particle, effectively preventing them from re-flocculating as they approach due to Brownian motion. This protection is not dependent on the system's electrical properties, making it less susceptible to environmental factors and providing more durable stability.     III. Anjeka-6610: A Block Copolymer Solution Tailored for Water-based Disperse Dye Inks Based on a deep understanding of the above mechanism and long-term technical accumulation, Anjeka introduces Anjeka-6610—a block copolymer dispersant synthesized using CPT technology. Its design directly addresses the core pain points of water-based disperse dye inks: Precise Anchoring and Long-lasting Stability: The special block copolymer structure allows its pigment-affinic groups to form strong, durable adsorption on the dye surface, which is not easily desorbed under thermal storage or solvent conditions, thereby providing continuous steric hindrance protection. Efficient Deflocculation and Performance Enhancement: Through powerful deflocculation, it aids grinding to achieve finer pigment particle size and a narrower distribution. This directly correlates to high gloss, enhanced color strength, significantly improved ink flow properties, and helps increase the transparency of transparent dyes or the opacity of opaque dyes. Broad Compatibility and Application Flexibility: Anjeka-6610 exhibits wide compatibility with various water-based systems. It is not only highly suitable for preparing general dye ink concentrates but also the resin-free pigment concentrates it produces can be further used in high-quality water-based coatings requiring no floating or flooding, offering formulators greater design freedom. IV. Practical Guide: How to Use Anjeka-6610 for Optimal Performance Even the best tool requires correct usage. According to Anjeka's technical documentation, we recommend the following when using Anjeka-6610: Add Early in the Process: For optimal wetting and dispersion effects, it is recommended to add the additive to the grinding mixture before adding the pigment during the milling stage. Dosage Requires Scientific Validation: For disperse dyes, the recommended starting addition range is 30%-50% (based on dispersant solids to dye weight). However, this is only an empirical starting point. The optimal dosage must be determined through a series of gradient tests for the specific dye and formulation. Storage Notes: This product is a water-soluble liquid and should be stored in a cool, dry place. If the ambient temperature falls below 0°C, the product may stratify or become cloudy. Before use, heat it to around 20°C and stir thoroughly to restore uniformity. The stability of dye ink is a critical factor affecting final print quality and customer trust. Choosing a dispersant with a clear mechanism and strong targeting is a wise strategy for building product competitiveness from the source. If you are developing or upgrading water-based disperse dye inks, or need to prepare highly stable resin-free color pastes, Anjeka-6610 deserves your in-depth verification. Take Action Now, Get Your Customized Technical Solution: Free Sample: Contact us privately, provide basic information about your system (e.g., dye type, approximate formulation), and you can apply for an Anjeka-6610 sample for testing. Technical Consultation: Our application engineering team is available for one-on-one technical exchanges to help solve specific dispersion stability challenges. Get Detailed TDS: Reply with the keyword "6610" to automatically receive the complete Technical Data Sheet and Application Guide for Anjeka-6610.  

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.