Multifunctional hindered amine light stabilizer and preparation method thereof

• Main Authors: XIANG ZHANBO, FANG XINGLIANG, ZHANG CHAO, KIM SE-RANG, CHEN WEIXING, XIANG ZHANFENG
• Format: Patent
• Language: Chinese; English
• Published: 11.11.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The invention discloses a multifunctional hindered amine light stabilizer and a preparation method thereof, and the preparation method comprises the following steps: step S1, N-n-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine and 2, 4, 6-trichloro-1, 3, 5-triazine are used as raw materials, and 2-chloro-4, 6-di-[N-n-butyl-N-(2, 2, 6, 6-tetramethyl-4-piperidyl) amino]-1, 3, 5-triazine is synthesized through nucleophilic substitution; s2, 2-(2 ', 4'-dihydroxybenzene)-4, 6-di [N-n-butyl-N-(2, 2, 6, 6-tetramethyl-4-piperidyl) amino]-1, 3, 5-triazine is synthesized through a substitution reaction, and 2-(2 ', 4'-dihydroxybenzene)-4, 6-di [N-n-butyl-N-(2, 2, 6, 6-tetramethyl-4-piperidyl) amino]-1 S3, 2-(2 ', 4'-dihydroxybenzene)-4, 6-bis [N-n-butyl-N-(2, 2, 6, 6-tetramethyl-4-piperidyl) amino]-1, 3, 5-triazine and 1-chlorohexane are subjected to an etherification reaction, and a multifunctional hindered amine light stabilizer UH is obtained; according to the invention, an internal hydrogen bond structure is introduc