Acrylic resins used in adhesives differ from those used in coatings in the following ways: Performance Characteristics Acrylic resins used in adhesives High bond strength: They must form a strong bond between different materials and cure quickly to generate sufficient cohesive and adhesive strength. For example, α-cyanoacrylate adhesives cure in seconds, achieving fast bonding. Good flexibility: When applied to the adherend, their flexibility buffers stress, preventing cracking at the bonded area and ensuring a durable bond. For example, second-generation acrylic adhesives form a tough cured product through the reaction of monomers and elastomers. Strong surface adaptability: They exhibit good adhesion to a variety of surfaces, including metal, plastic, glass, and wood. Surface preparation requirements are relatively low, and some adhesives can even bond to oily surfaces. Acrylic Resins for Coatings Excellent Weather Resistance: In outdoor environments, they offer long-term resistance to UV rays, rain, wind, sand, and temperature fluctuations. They resist fading, chalking, cracking, or peeling, maintaining the integrity and decorative properties of the coating. They are often used for coatings on outdoor buildings and facilities. Excellent Decorative Properties: They can be produced in various gloss levels, from high gloss to matte, offering rich colors with excellent color retention, providing a pleasant visual effect. They also exhibit excellent leveling properties, resulting in a smooth, even coating surface. Excellent Mechanical Properties: They possess a certain degree of hardness, abrasion resistance, and flexibility to withstand mechanical forces such as friction and impact during use, protecting the coated surface. However, different coatings prioritize different hardness and flexibility. For example, wood coatings may prioritize flexibility, while metal coatings may prioritize hardness. Chemical Composition and Formulation Acrylic Resins for Adhesives Monomer Selection: Monomers such as acrylates and methacrylates are commonly used. Specialized functional monomers may also be introduced to enhance bonding performance. For example, monomers containing polar groups such as hydroxyl and carboxyl groups can enhance surface interaction with the adherend. Additives: Initiators, accelerators, stabilizers, plasticizers, etc. are added. For example, anaerobic adhesives require a special initiation system to initiate the curing reaction under oxygen-free conditions. Acrylic Resins for Coatings Monomer Selection: In addition to commonly used acrylate monomers, monomers with specific functions are also selected to improve coating performance. For example, fluorinated acrylate monomers can enhance water resistance and stain resistance. Additives: Pigments, fillers, dispersants, leveling agents, and defoamers are added. Pigments and fillers impart color and hiding power to the coating. Dispersants help evenly disperse the pigment. Leveling agents and ...

Sinograce Chemical has launched a washable pressure-sensitive adhesive label adhesive for use on washable film labels for PET bottles and trays. This allows for efficient separation of labels from bottles during the recycling process, optimizing the recycling and reuse of PET materials. Single-Step Separation of PET Labels Recycled PET plastic bottles undergo a series of processes before becoming high-purity flakes ready for subsequent processing. Labels with various pressure-sensitive adhesives, in particular, can leave adhesive adhering to the PET flakes after removal, requiring high temperatures and detergents to partially remove. Flakes that cannot be removed must be discarded. In contrast, using washable pressure-sensitive adhesive for labels makes removal much easier. Generally, European countries use hot alkaline water at temperatures between 65 and 85 degrees Celsius and other reagents to remove pressure-sensitive adhesive from PET flakes. Labels made with BOPP facestock and washable pressure-sensitive adhesive automatically peel off PET bottle flakes after soaking in hot alkaline water for a period of time. The BOPP label facestock, due to its lower density, floats on the water surface, while the PET flakes, due to their higher density, sink to the bottom, thus separating the bottle cap, label, and flakes in a single step. This design not only simplifies the "label removal," "friction cleaning," and "high-temperature cleaning" steps in the recycling process, but also improves the purity and recovery rate of the recycled flakes. Advantages of Sinograce Chemical's Washable Pressure-Sensitive Label Adhesives Excellent water-based performance allows for rapid separation of labels from PET bottles, enhancing PET purity and recycling value. Excellent elution efficiency allows for effective elution even at low temperatures (e.g., 65 degrees Celsius), reducing energy consumption. Excellent water-whitening resistance ensures that transparent labels maintain their appearance after washing. Excellent cleaning results ensure a thorough, residue-free rinse. By developing sustainable label adhesives, Sinograce Chemical is actively exploring the possibilities of a circular economy—making every recycling effort both environmentally and economically beneficial. Please call: +86 0551 63459511 If you are interested in our products, please scan the QR code below to register your information. Sinograce Chemical will arrange for shipment as soon as possible.

Product Description SW7541,SW7542,SW7543 is a modified, fluorine-free, waterproof paper coating emulsion based on a specialized polymer system. It offers excellent heat-activated adhesion and printability, as well as excellent oil and grease resistance. It is proven biodegradable in industrial composting environments and meets FDA food contact regulations, making it an ideal choice for paper packaging applications. Applications 1. SW7541 is suitable for use in disposable cups,packaging boxes, and other applications as a heat-sealable alternative to lamination. 2. SW7542 is suitable for food-contact paper, such as disposable food packaging bags and lunch boxes. 3. SW7543 is used in Barrier Coating for Paper Bags, and as a base formulation for functional coatings, providing excellent water-proof,moisture-proof, and barrier properties. 4. Depending on the application, Barrier Coating can be diluted with a specific proportion of deionized water. Thickeners can also be used to achieve varying viscosity requirements. If necessary, please follow our technical guidance and add appropriate amounts of defoaming, thickening, and wetting agents. Please call: +86 0551 63459511 If you are interested in our products, please scan the QR code below to register your information. Sinograce Chemical will arrange for shipment as soon as possible.

Removable labels feature low peel force and can be removed cleanly from the surface after a period of time without contamination. These require a low-tack adhesive that can be removed without residue after rigorous aging. Currently, a widely adopted low-cost removable adhesive design involves adding a small amount of crosslinking agent to a general-purpose low-tack pressure-sensitive adhesive to increase its molecular weight and reduce its tack. However, this design does not alter the polarity or microstructure of the pressure-sensitive adhesive, resulting in only a short period of removability. After exposure to high temperature and humidity or after a certain period of storage, pressure-sensitive adhesives may still fully wet the substrate, exhibiting permanent adhesive properties and making them difficult to completely remove. Sinograce Chemical's removable label adhesive offers three key performance advantages: peel force, removability, and substrate adhesion. Removability Removable pressure-sensitive adhesives exhibit a wide range of removable properties on various surfaces. Surface adhesion Surface adhesion is a key property of removable pressure-sensitive adhesives. They exhibit excellent adhesion to paper substrates. For film-based surface materials, a suitable surface treatment (such as double-layer coating) is required to achieve good adhesion. Applications Various single copper, mirror copper, mirror wet-strength paper, thermal paper, mirror aluminum paper, aluminum foil labels, and advertising materials. If you would like to learn more about Sinograce Chemical's removable pressure-sensitive adhesive products, especially for label applications, please feel free to contact us! Please call: +86 0551 63459511 If you are interested in our products, please scan the QR code below to register your information. Sinograce Chemical will arrange for shipment as soon as possible.