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Characteristics of Acrylic Polyurethane Topcoat Acrylic polyurethane paint, formed by the reaction of hydroxyl-containing acrylic ester and aliphatic polyisocyanate such as HDI trimer, has a paint film with excellent hardness and flexibility, and good chemical resistance. Its outstanding weather resistance, high gloss, good drying properties, and fast surface drying without dust adhesion make it t...
Polyurethane materials are a general term for a class of macromolecular compounds that have urethane structures in their molecular structure. They are usually prepared by the polyaddition reaction of diisocyanates and polyols. Polyurethane polymers possess both polar functional groups that allow for physical cross-linking and non-polar and flexible chain segments. When used properly, these po...
The Secret to Non-Peeling Labels: How Adhesives Determine Label Lifespan In everyday packaging, label peeling is a common yet troublesome problem – not only affecting product appearance but also potentially raising consumer doubts about quality. But have you ever considered that a crucial science lies behind this: adhesives? Adhesives: The "Invisible Guardians" of Labels Adhesives a...
One component of self-adhesive label materials is the adhesive, also known as glue. The adhesive determines the label's stickiness and applicable scenarios. The adhesive is also the bonding layer between the label and the object it's applied to; its stickiness, temperature resistance, and magnetic adhesion directly affect the label's adhesion effect. It can be divided into the following categories...
01 Polyurethane The structure of polyurethane is formed by the reaction of polyisocyanates (e.g., diisocyanate OCN-R-NCO) and polyols (e.g., diol HO-R-OH), where urethane segments are repeating structural units. Polyurethane structures have structures similar to amide and ester groups; therefore, the chemical and physical properties of polyurethane are between those of polyamides and polyesters. S...
Product Recommendation | Dimethylol Butyric Acid (DMBA) Dimethylol Butyric Acid (DMBA) CAS No.:10097-02-6 Molecular Formula:C6H12O4 Molecular Weight:148.16 Physicochemical Properties:White crystalline solid Melting Point:108–115 °C; soluble in water, methanol, acetone, etc. Applications of Dimethylol Butyric Acid (DMBA) Core Function: A hydrophilic chain extender for water-based polyurethane...
Many people find themselves torn when selecting materials: since both are used for coatings, which one offers greater durability? Which is the more suitable choice for waterproofing during renovation? In reality, neither possesses an absolute advantage over the other; the key lies in the specific requirements of the application scenario. Today, we will clarify the core distinctions between the two...
Removable adhesive labels are widely used in modern packaging, product identification and temporary labeling applications. Unlike permanent labels, removable labels can be applied firmly during use and removed cleanly when needed, helping brands improve product presentation, user experience and packaging flexibility. In many industries, removable labels are required not only to provide clear infor...
When manufacturing labels, the choice of adhesive backing is just as crucial as the face material and print quality. Whether a label adheres firmly, resists edge curling, or leaves behind residue upon removal often depends heavily on the adhesive applied to its backing. The adhesive commonly used on the back of labels is known as pressure-sensitive adhesive (PSA). This type of adhesive requires ne...
As carbon reduction and circular economy continue to gain momentum worldwide, the packaging industry is paying more attention to material recyclability and recycled material value. For PET bottles, food trays, and household product packaging, labels are not only used for brand display, but also play an important role in the recycling process. In traditional recycling systems, label adhesives that ...
Washable Labels Powered by Water-based Adhesives: Safeguarding High-Quality "Bottle-to-Bottle" PET Recycling Safeguarding a Green Future In the global effort to address climate challenges and plastic pollution, Sinograce Chemical remains steadfastly focused on the R&D and innovation of surface material products. We are committed to driving the circular economy through sustainable chemical solu...
PET plastic bottles are widely used in beverage, food, household chemical, personal care, and many other packaging applications. Although PET has high recycling value, label materials and adhesive residues can still affect the washing, sorting, and reprocessing quality of recycled PET flakes during the actual recycling process. Traditional label adhesives are often difficult to remove completely d...
PET bottles are widely used in food, beverage, personal care, and household packaging. Because PET has a relatively simple material structure compared with many multi-layer packages, it is often considered more suitable for recycling. However, the final quality of recycled PET does not depend on the bottle material alone. Labels and adhesives also play an important role in the recycling process. I...
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Sinograce Chemical is professional technical enterprise providing solutions of surface materials and manufacturing of raw materials. Sinograce Chemical Company is composed of R&D center, Manufacture center, Quality control department, Market center and International trade department. We have been dedicating to research on excellent paint/coating, adhesive for over 15 years. And now still conti...
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