UV-3638, also known as Cytec Cyasorb UV 3638, Cytec 3638, Cyasorb UV 3638, UV Absorber UV-3638, Light Stabilizer UV-3638, 2,2-(1,4-Phenylene)bis-4H-3,1-benzoxazin-4-one, 2,2-(1,4-phenylene)bis((4H-3,1-benzoxazine-4-one), and 2,2-benzene-1,4-diylbis(4H-3,1-benzoxazin-4-one), is a highly effective ultraviolet (UV) absorber and light stabilizer. It is widely used in various industrial applications, such as plastics, coatings, adhesives, and printing inks, to protect them from UV degradation and enhance their durability and performance.

Ningbo Inno Pharmchem Co., Ltd. is a leading manufacturer, supplier, and factory of UV-3638, with many years of expertise in producing high-quality and cost-effective photoinitiators and other specialty chemicals for different industries. Our UV-3638 is made from advanced technology and raw materials, ensuring consistent and reliable quality, excellent compatibility, and ease of use.

UV-3638 works by absorbing UV radiation in the range of 270-350 nm, which is the most damaging and harmful to polymers and other organic materials. It converts the absorbed energy into heat, which dissipates harmlessly, preventing the formation of free radicals, chain scission, crosslinking, yellowing, and other degradation mechanisms that can weaken or destroy the material. UV-3638 also acts as a stabilizer, preventing the oxidation and other chemical reactions that can further degrade the material.

UV-3638 has many advantages over other UV absorbers and stabilizers. It is highly efficient, with a low loading level (usually 0.1-1.0%) required to achieve the desired protection. It is also compatible with a wide range of polymers, such as polyethylene, polypropylene, PVC, PET, polycarbonate, acrylates, and styrenics, as well as different processing methods, such as extrusion, injection molding, blow molding, and film casting. UV-3638 is also resistant to migration, leaching, and blooming, which can cause surface defects and reduce the efficacy of the additive.

UV-3638 can be used alone or in combination with other additives, such as antioxidants, antistatic agents, and flame retardants, to provide comprehensive protection and performance enhancement. It can also be formulated into masterbatches and concentrates for easier handling and dispersion, as well as customized to meet specific requirements, such as color, transparency, and weatherability.

UV-3638 has many applications in different industries. In plastics, it is used to protect products from UV degradation during outdoor exposure, such as automotive parts, packaging, toys, and construction materials. It is also used in electronics, such as LCD screens, to prevent yellowing and loss of clarity. In coatings, it is used to maintain the color and gloss of paints, varnishes, and enamels, as well as to prevent rust and corrosion of metal surfaces. In adhesives, it is used to improve the adhesion and cohesion of joints and laminates, as well as to prevent cracking and delamination. In printing inks, it is used to prevent fading and discoloration of images and texts.

UV-3638 is a promising photoinitiator for industrial use, with many advantages and applications. Its high efficiency, compatibility, and stability make it a cost-effective and reliable solution for protecting and enhancing various materials and products. As a manufacturer, supplier, and factory of UV-3638, Ningbo Inno Pharmchem Co., Ltd. can provide you with the best quality and service, as well as technical support and customization options. Contact us today to learn more about our UV-3638 and how it can benefit your business.

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