I. Why Must Cigarette Packaging Printing Shift to Water-Based Acrylic Emulsions? Traditional solvent-based inks contain large amounts of volatile organic compounds (VOCs) such as benzene and ketones, which not only harm the health of operators but also easily leave residues on packaging, affecting tobacco safety. Water-based acrylic emulsions, using water as the dispersion medium, have extremely low or even zero VOC content, are non-toxic, odorless, and non-flammable, meeting industry standards such as the "VOC Limits in Tobacco Products and Materials," making them the preferred material for current green printing certification. Furthermore, modern cigarette packaging pursues high gloss, metallic feel, and vibrant colors. Through molecular structure design, water-based acrylic emulsions can achieve printing performance comparable to or even superior to solvent-based inks. II. Key Performance Requirements and Technical Adaptation Cigarette packaging printing mostly employs gravure or flexographic high-speed overprinting processes, placing stringent requirements on the ink's workability, stability, and film-forming properties. Water-based acrylic emulsions must meet the following core indicators: Excellent color development and high gloss The emulsion must possess good pigment wetting and dispersion capabilities to ensure color saturation and accurate reproduction. Some specialized emulsions can achieve a gloss level of over 80 at a 60° angle, giving cigarette packs a luxurious feel. Rapid drying and good leveling properties Under medium-to-high speed printing conditions (80–150 m/min), rapid moisture evaporation and uniform film formation are required to avoid defects such as bubbling and orange peel. Controlling the emulsion particle size to 0.1–0.2 μm helps improve drying speed and film density. Strong adhesion and abrasion resistance Finished cigarette packs undergo processes such as folding, creasing, and stacking. The ink must possess excellent adhesion and abrasion resistance to prevent ink splattering or delamination. Styrene-acrylic polymer emulsions excel in this regard. Good Compatibility with Ethanol Systems In actual printing, ethanol is often added to adjust drying speed and viscosity. The emulsion must have excellent alcohol solubility to avoid demulsification or flocculation. Some products can be diluted with ethanol in any proportion and have good reconstitution properties. Environmental Compliance and Safety Free of APEO, heavy metals, and carcinogenic aromatic amines, meeting food-grade packaging safety requirements, suitable for high-hygiene-standard fields such as tobacco, alcohol, and pharmaceuticals. III. Quality Control and Storage Management Testing Items: Each batch should be tested for key parameters such as solid content (48±1%), viscosity (800–2000 cps), pH value (7–9), and particle diameter (0.1–0.2μm). Storage Conditions: Sealed and protected from light, avoid freezing and high temperatures. Recommended storage temper...

Emulsion polymerization, developed in the last century, has seen its production volume, quality, and variety of products increase year by year due to its unique advantages, with increasingly rational production processes. Furthermore, emulsion polymerization technology is constantly innovating. Besides conventional emulsion polymerization, various polymerization technologies have emerged, such as multicomponent emulsion polymerization, seed emulsion polymerization, microemulsion polymerization, fine emulsion polymerization, and non-aqueous emulsion polymerization. These new methods have greatly enriched the content of emulsion polymerization and also raised new questions for theoretical research. Multicomponent emulsion polymerization, through multi-component copolymerization, can increase the possible products and improve the performance of polymers by changing the monomers. We can utilize the synergistic and complementary properties of different monomers or polymer segments to prepare polymers with desired properties. Seed Emulsion Polymerization Seed emulsion polymerization technology is another important method for preparing functional emulsions. In the past one or two decades, the development and application of new emulsion polymerization processes and technologies have been very active. Extensive research has been conducted on the reaction kinetics and mathematical models of emulsion polymerization, achieving considerable and fruitful progress. Microemulsion Polymerization The concept of microemulsions was first proposed by Hoar and Schulman in 1943. Unlike traditional W/O and O/W, microemulsions can also adopt many other textured structures, such as spherical, columnar, and layered structures. A crucial property of microemulsions is that they are isotropic and thermodynamically stable systems; as long as the composition and temperature remain constant, the system will not aggregate. Fine Emulsion Polymerization Fine emulsion polymerization refers to emulsions with monomer droplets only 100–400 nm in size (submicron). Its main components are water, emulsifiers, and water-insoluble long-chain aliphatic hydrocarbons (alcohols) as co-emulsifiers. Because the monomer droplets are dispersed at the submicron level, their surface area is large, making it easier to capture free radicals. Therefore, the main reaction site is the submicron-sized monomer droplet dispersion phase. The presence of long-chain aliphatic hydrocarbons creates a robust interfacial layer between the dispersed phase and submicron-sized monomer droplets, formed by the emulsifier and the long-chain aliphatic hydrocarbon (alcohol). This layer prevents collisions and aggregation of monomer droplets and particles. Simultaneously, the water insolubility of the long-chain aliphatic hydrocarbon (alcohol) also inhibits the interdiffusion of monomers between droplets. Such emulsions are easily predictable and controllable. Non-aqueous emulsions: Non-aqueous emulsions are emulsions obtai...

Acrylic Emulsion Acrylic emulsion is a milky white or nearly transparent viscous liquid. It is an emulsion copolymerized from pure acrylate monomers, characterized by small particle size, versatility, and excellent performance. Features: △ Excellent gloss and transparency △ Water and weather resistance △ Alkali and stain resistance △ Good adhesion △ Non-toxic, non-irritating, harmless to humans, low pollution, and meets environmental protection requirements Applications: △ Suitable for various coating formulations, mainly used in building waterproofing, casein adhesives, water-based inks, and panel adhesives. △ High-gloss and semi-gloss coatings △ Masonry, wood, and steel surfaces △ Used to formulate matte, semi-gloss, and high-gloss latex paints; also suitable for formulating high-quality flooring, cement tiles, and tennis court coatings. Classification Emulsions can be classified according to their application as: interior wall emulsions, exterior wall emulsions, stone-like paint emulsions, elastic emulsions, liquid granite paint emulsions, waterproof emulsions, and sealing emulsions. According to their composition, they can be classified as: pure acrylic emulsions, silicone acrylic emulsions, styrene-acrylic emulsions, and vinyl acetate-acrylic emulsions. Composition of Emulsion Coatings 1. Synthetic Resin Emulsions: These are the base material of coatings and one of the main film-forming substances in emulsion coatings, acting as a binder. Acrylic Emulsion Coatings are classified according to polymer composition as: styrene-acrylate copolymer emulsions, acrylate-ethylene tert-carbonate copolymer emulsions, silicone-acrylate copolymer emulsions, and all-acrylate copolymer emulsions. According to film characteristics, they are classified as: thermoplastic emulsions, thermosetting emulsions, and elastic emulsions. According to particle charge properties, they are classified as: anionic emulsions, cationic emulsions, and nonionic emulsions. According to application: Emulsions for internal use, emulsions for external use, and special-purpose emulsions. Pigments and fillers: These are among the main film-forming substances in emulsion coatings. Additives: Pigment wetting and dispersing agents, pH adjusters, defoamers, rheology modifiers, thickeners, bactericides and preservatives, film-forming aids, antifungal and anti-algae agents, antifreeze agents, thixotropic agents, UV absorbers, etc. Water: In industrial production, distilled or deionized water should be used for emulsion polymers, with a sodium chloride content below 0.05 mg/L and a water conductivity below 10 mS. Room 1013, Building A5, Financial Port Center, Yangzijiang Road, Baohe District, Hefei City， Anhui province, China Factory Address: Feidong County Industrial Park, Hefei City, Anhui Province, China +86 0551 63459511 sales@sinogracechem.com vivisinograce@outlook.com +8615755193346 http://www.sinogracechem.com

ANHUI CHINA – February 24, 2026 – Sinograce Chemical today marked the official start of its 2026 business year with a traditional (Start of Work) ceremony at its headquarters. Embracing the dynamic spirit of the Year of the Horse, employees and leadership gathered to celebrate new beginnings and set the stage for the year ahead. The day featured the distribution of "Lucky Red Packets" , with senior leadership personally welcoming returning staff and extending wishes for prosperity and success. The celebration underscored the company's commitment to its people and its cultural heritage. Following the morning festivities, all departments resumed full operations, focusing on the company's strategic priorities for 2026, "As we enter this symbolic year of energy and progress, we do so with focus and determination ,Our team is united and ready to deliver exceptional value to our clients." About Sinograce Chemical Sinograce Chemical is a leading provider of Water based coating,water based resin. For more information, visit https://www.sinogracechem.com/.