十一至十五碳二元酸二(2，2，6，6-四甲基哌啶基)酯的合成及其光稳定性研究  

SYNTHESIS AND LIGHT STABILITY OF C_(11)-C_(15) DICARBOXYLIC ACID BIS(2,2,6,6-TETRAMETHYL-4-PIPERIDINYL) ESTER

作　　者：魏菁晶[1,2] 赵文军[1] 关建[1,2] 陈阳[1,2] 高林[1] 

机构地区：[1]中国科学院新疆理化技术研究所,新疆乌鲁木齐830011 [2]中国科学院研究生院,北京100049

出　　处：《精细石油化工》2008年第3期1-3,共3页Speciality Petrochemicals

摘　　要：以甲醇钠为催化剂,无水二甲苯为溶剂,采用4A分子筛脱醇脱水,以长链二元酸二甲酯(LDDE)和2, 2,6,6-四甲基哌啶醇(TMPO)为原料制备了十一至十五碳系列二元酸二(2,2,6,6-四甲基哌啶基)酯。通过正交实验确定的最佳工艺条件为:反应时间8 h,n(TMPO):n(LDDE)=4:1,催化剂用量为LDDE质量的0.8%。该产物可明显改善加氢基础油的光稳定性能。Long-chain dicarboxylic acid bis （2,2,6, 6-tetramethyl-4-piperidinyl） esters （LDPE） were synthesized with long-chain dicarboxylic acid dimethyl ester（LDDE） and 2,2,6,6-tetramethyl-4-piperidinol（TMPO） with sodium methoxide as catalyst, anhydrous xylene as solvent and 4A molecular sieve to dispose of water and carbinol. The optimum reaction conditions were found as follows, reaction time 8h, mole ratio of TMPO to LDDE 4.0 and sodium methoxide dosage 0.8% of the mass of long-chain dicarboxylic acid dimethyl ester. It was found that the products could effectively improve the stability of hydrotreated base oil against light.

关 键 词：酯交换 甲醇钠十一至十五碳二元酸二甲酯2 2 6 6-四甲基哌啶醇 十一至十五碳二元酸二 (2 2 6 6四甲基哌啶基)酯光稳定性 

分 类 号：TQ225.242[化学工程—有机化工] TQ314.245.2