Polyester materials play an important role in various industries because of their good mechanical properties and high transparency. For example, in the construction industry, transparent PC sheet is widely used as an outdoor sunshade. Automotive industry, the use of PET film as a solar film. Packaging field, polyester can be made into different shapes and transparency of the bottle used for food packaging and cosmetics industry. In the field of clean energy, polyester can also be used for production of solar back film, etc., to create good social and economic benefits.
Accompanied by the promotion of polyester materials, the selection and development of UV absorbers are also put forward higher requests. Since conventional UV absorbers can not meet the requirements of the application of broad-band UV protection, OMNISTAB UV3638 came into being!
ØAchieve wider UV protection
UV absorption spectrum of UV3638
OMNISTAB UV3638 is a new generation of eco-friendly UV absorber with broadband absorption in the UVB and UVA bands, and partially strong absorption in the UVC band of 200-230nm. Therefore, UV3638 can comprehensively absorb polymer sensitive UV bands, efficiently prevent the material from UV aging, and can realize the protection effect that cannot be achieved by a single UV absorber.
UV3638 is particularly suitable for the optical industry that requires high light transmittance and color, such as PET films, PC optical lenses, light diffusing panels for backlighting liquid crystal display devices, and so on.
Chemical structure of OMNISTAB UV3638
Ø High molecular weight & good temperature resistance
OMNISTAB UV3638 has high molecular weight, low volatility in material formulations, excellent thermal stability. Its TGA (10%) > 370°C, and is suitable for thermoplastic polyester, nylon with high processing temperatures and stringent requirements for UV absorption.
In addition, UV3638 is an FDA-approved additive for food contact materials. It has high compatibility with PET materials, does not participate in the PET polyester polymerization process, and does not decompose, precipitate, or migrate during processing and storage.
