Tinuvin 326, with the CAS number 3896 - 11 - 5, is a widely recognized light stabilizer in the chemical industry. This product is offered by our factory at the best price, ensuring high - quality and cost - effective solutions for our customers.
It has a molecular formula of C17H18ClN3O3 and a molecular weight of approximately 347.8 g/mol. The appearance of Tinuvin 326 is a yellowish - white crystalline powder. It has a melting point in the range of 137 - 141°C and is insoluble in water but soluble in many organic solvents such as acetone, toluene, and ethyl acetate.
Our factory supply adheres to strict quality control standards. The purity of our Tinuvin 326 is typically above 99%, which guarantees its excellent performance in various applications.
Tinuvin 326 is mainly used as a UV absorber in polymers. It can effectively protect polymers from the harmful effects of ultraviolet (UV) radiation, such as discoloration, loss of gloss, cracking, and reduced mechanical properties.
In the plastics industry, it is commonly added to polyolefins (such as polyethylene and polypropylene), PVC, polystyrene, and engineering plastics. For example, in automotive interior parts made of plastics, Tinuvin 326 helps to maintain the color and mechanical strength of the parts under long - term sunlight exposure.
In the coatings industry, it can be incorporated into various types of coatings, including automotive coatings, industrial coatings, and wood coatings. By absorbing UV rays, it extends the service life of the coatings, preventing them from chalking, blistering, and peeling.
The usage of Tinuvin 326 depends on the specific application and the requirements of the final product. Generally, it can be added during the polymer processing or coating formulation stage.
For plastics, it can be added directly to the polymer resin during extrusion, injection molding, or blow molding processes. The recommended dosage is usually in the range of 0.1% - 1.0% by weight, depending on the thickness of the plastic product, the intensity of UV exposure, and the type of polymer.
In coatings, it can be mixed with other coating components such as binders, pigments, and solvents. It is important to ensure thorough mixing to achieve uniform dispersion in the coating system. The dosage in coatings is typically 0.5% - 3.0% by weight, again depending on the specific coating type and end - use environment.
Case 1: Automotive Exterior Plastics
A major automotive manufacturer was facing problems with the discoloration and cracking of their exterior plastic parts, such as bumpers and side mirrors, after long - term outdoor exposure. They decided to use our Tinuvin 326 in their polypropylene - based plastic formulations. By adding 0.3% Tinuvin 326 by weight, they conducted accelerated weathering tests. After 2000 hours of testing, the parts showed only minimal discoloration compared to the non - stabilized parts, which had significant yellowing and cracking. In real - world applications, the use of Tinuvin 326 has extended the service life of these plastic parts by at least two years.
Case 2: Wood Coatings
A furniture manufacturer was struggling with the rapid degradation of their wood coatings under sunlight. Their traditional coatings were losing gloss and developing cracks within a year of use. After incorporating 1.5% Tinuvin 326 by weight into their polyurethane - based wood coatings, they carried out outdoor exposure tests. The coated wood samples maintained their gloss and integrity for over three years. This not only improved the appearance of the furniture but also increased customer satisfaction and reduced product returns.
If you have any further questions or need more information, please contact us at info@vivalr.com or call (86) 15866781826.
This is William, CEO of Zhishang Chemical Co., Ltd.
Welcome to visit our factory . As the top chemical manufacturer, we have been striving for product quality, innovation , R&D, and customer service for the past 7 years. In the next 10 years or even longer, we are committed to becoming the most reliable chemical supplier in the world , creating a well-known international brand trusted by customers, with the spirit of “one meter wide, ten thousand meters deep”, we continue to focus on product research and development, continue to focus on customer service, continue to improve the supply chain service system, to create a professional chemical supply service team, to achieve win-win long-term cooperation. Please feel free to contact us if you have any questions.
