Hydroxypropyl Acrylate (HPA), a chemical compound identified by CAS 25584-83-2, is an essential acrylic monomer widely utilized across various industrial sectors. Understanding its key properties is fundamental to appreciating its extensive applications, from advanced coatings and adhesives to the synthesis of specialized polymers. As a derivative of acrylic acid, HPA offers a unique blend of reactivity and functionality that makes it a cornerstone ingredient for many modern material formulations.

Physically, Hydroxypropyl Acrylate is typically described as a colorless, transparent liquid. This liquid form facilitates easy handling and incorporation into liquid-based chemical processes and formulations. Its molecular weight is approximately 130.14 g/mol, and it possesses a characteristic ester-like odor. Key physical properties include a boiling point around 77°C at 5 mmHg, a density of approximately 1.044 g/mL at 25°C, and a refractive index of n20D 1.445. These specifications are critical for quality control and ensure consistent performance in manufacturing processes.

Chemically, HPA's defining feature is the presence of two reactive functional groups: a vinyl group (C=C) and a hydroxyl group (-OH). The vinyl group makes it a classic monomer capable of undergoing free-radical polymerization and copolymerization. This allows it to form long polymer chains and complex co-polymers with a wide range of other monomers, including other acrylates, methacrylates, styrene, and vinyl acetate. The hydroxyl group, on the other hand, provides a site for further chemical modification. It can react with isocyanates to form urethane linkages, with epoxides, or with carboxylic acids and their derivatives, enabling the creation of cross-linked networks or functionalized polymers with specific properties.

The applications of HPA are diverse and impactful. In the coatings industry, it is a valuable component for improving adhesion to substrates, enhancing flexibility, and increasing resistance to chemicals and abrasion. This makes it ideal for use in automotive coatings, industrial finishes, and protective paints. In the realm of adhesives and sealants, HPA contributes to stronger, more durable bonds and improved cohesive strength. Its role as a specialty monomer also extends to the production of inks, textiles, and other performance materials where enhanced properties such as hydrophilicity or specific reaction capabilities are desired.

Manufacturers seeking reliable sources of high-quality Hydroxypropyl Acrylate can partner with suppliers like NINGBO INNO PHARMCHEM CO.,LTD. Their commitment to quality ensures that this vital chemical intermediate meets the exacting standards required for successful implementation in demanding industrial applications, helping drive innovation and product excellence.