POLYESTER CONTAINING BENZOTRIAZOLE GROUP, ITS PREPARATION, ULTRAVIOLET ABSORBENT AND SYNTHETIC RESIN COMPOSITION

• Main Authors: OKUMURA, KOICHI, ISOBE, TOMOHISA, ENDO, TOSHIO
• Format: Patent
• Language: English; Korean
• Published: 06.03.2000
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PURPOSE: Polyester containing the ultraviolet absorbing agent is prepared which has a good alkali resistance and solvent resistance. CONSTITUTION: Polyester(formula 1; R1 is hydrogen, halogen or C1- c10 alkyl; R2 is hydrogen or C1 -C10 alkyl; R3 is C1- C10 alkylene; R4 and R5 are C1- C10 alkyl; n= 4- 8; m= 1- 2) is prepared at 100- 220 degree C by the polymerization of alcohols such as 3-(5-chloro-2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxy-benzene propanol, 3-(2H-benzotriazol-2-yl)-4-hydroxy-benzene ethanol, or 3-(5-methyl-2H-benzotriazol-2- yl)-5-(1-methylethyl)-4-hydroxy-benzene propanol, and lactones such as eta-caprolactone, trimethyl-eta-caprolactone, monomethyl-eta-caprolactone, gamma-butyrolactone, delta-valerolactone, in the presence of tetraethyl titanate, tetrabutyl titanate, tetrapropyl titanate, organic titanium compound and organic tin compound and halogenated tin compound. 신규한 벤조트리아졸기 함유 폴리에스테르가, 3-(5-클로로-2H-벤조트리아졸-2-일)-5-(1,1-디메틸에틸)-4-히드록시-벤젠프로판올, 3-(2H-벤조트리아졸-2-일)- 4-히드록시-벤젠에탄올, 3-(5-메틸-2H-벤조트리아졸-2-일)-5-(1-메틸에틸)-4-히드록시-벤젠프로판올, 비스[3-(2H-벤조트리아졸-2-일)-4-히드록시-벤젠에탄올]메탄등에, 그 알콜성 수산기에서 락톤류를 개환부가중합시킴으로써 얻어지고, 이것을 자외선 흡수제에 사용하여 열가소성 수지에 배합함으로써 내광성 및 내약품성이 우수한 수지조성물이 얻어진다.