The product, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, is identified by the CAS numbers 41556-26-7 and 82919-37-7. It is a high - quality chemical compound that is widely recognized in the industry for its excellent performance. This product is often used as a light stabilizer due to its remarkable ability to protect polymers from the harmful effects of ultraviolet (UV) radiation. Chemically, it is a sebacate ester of 1,2,2,6,6 - pentamethyl - 4 - piperidine. The high - quality version of this product is formulated to meet strict industry standards, ensuring consistent quality and performance. It has a specific molecular weight and melting point, which are important parameters for its application in various processes. The purity of the product is maintained at a high level, which contributes to its effectiveness in its intended uses.
One of the primary uses of bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate is as a light stabilizer in the polymer industry. Polymers such as polypropylene, polyethylene, and other plastics are prone to degradation when exposed to UV light. This degradation can lead to changes in the mechanical properties of the polymers, such as reduced strength and increased brittleness. By incorporating this product into the polymer matrix, it can absorb and dissipate the energy of UV light, preventing the formation of free radicals that cause degradation. Another important application is in coatings. In paint and coating formulations, it can enhance the durability and weather resistance of the coatings. This helps to maintain the appearance and performance of the coated surfaces over a longer period, even under harsh environmental conditions. Additionally, it can be used in adhesives, fibers, and elastomers to improve their resistance to UV radiation and extend their service life.
When using bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, the first step is to determine the appropriate dosage. The dosage depends on various factors, such as the type of polymer or material, the intended application, and the expected exposure to UV light. Generally, for polymers, the recommended dosage ranges from 0.1% to 1.0% by weight. It can be added during the polymer processing stage, such as during extrusion or injection molding. For coatings, it can be mixed with other coating components during the formulation process. It is important to ensure uniform dispersion of the product in the matrix to achieve optimal performance. This can be accomplished through proper mixing techniques, such as high - shear mixing. Safety precautions should also be taken when handling the product. Wear appropriate personal protective equipment, such as gloves and goggles, to avoid direct contact with the skin and eyes.
Case 1: A plastics manufacturer was producing outdoor plastic furniture. Before using bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, their products started to show signs of yellowing and embrittlement after just a few months of outdoor exposure. After incorporating this product into their polypropylene formulations at a dosage of 0.5% by weight, the outdoor furniture maintained its original color and mechanical properties for over two years. This significantly improved the product's market competitiveness and customer satisfaction. Case 2: A paint company used this product in their exterior wall paint formulations. The paint was tested on a building facade in a region with high sunlight intensity. Without the light stabilizer, the paint started to peel and fade after one year. However, the paint with the appropriate amount of bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate remained intact and retained its color vibrancy for more than three years, demonstrating its excellent ability to enhance the durability of coatings.
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