催化合成受阻胺光稳定剂UV-292.pdf

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料助剂
2012年第1期(总第91期
催化合成受阻胺光稳定剂UV-292
王树清高崇1王歆然2
(1.南通大学化学化工学院,南通,226019;2.南通惠康国际企业有限公司,南通,226009
摘要以石油醚为溶剂,颗粒状活性炭负载四丁基钛酸酯为催化剂,一定比例的癸二酸二甲酯和
1,2,2,65-五甲基一4-羟基啾啶在110~120℃下缩合反应2~5h。然后水洗、活性炭脱色、腕溶剂等后处理
操作,一步合成了产物受阻胺光稳定剂(HALS)UV-292,其中1ー甲基-8-(1,2,2,6,6-五甲基-4ー哌啶)癸ニ
酸酯(单酯)质量分数为15%~30%和双(1,2,2,6,6-五甲基-4ー哌啶基)癸二酸(双酯)质量分数为65%
80%),收率超过97%,纯度不低于96%。得到了优化的工艺条件:反应时间为2.5h,在癸二酸二甲酯为
0.1mol的情沉下,n(癸二酸二甲醋)n(1,2,2,6,6-五甲基一4一羟基啄啶)为01:0.165,催化荆用量为1.0g、溶
剂的用量为40g。催化剂不经处理可循环使用多次
关键词双(1,2,2,6,6-五甲基一4-哌啶)癸二酸酯1-甲基-8-(1,2,2,6,6-五甲基一4一哌啶)癸二酸酯
癸二酸二甲酯1,2,2,6,6-五甲基-4-羟基哌啶受阻胺光稳定剂合成
Preparation of Hindered Amine Light Stabilizer 0v-292 in Presence of Catalyst
Wang Shuqing Gao Chong Wang Xinran'
1. College of Chemistry and Chemical Engineering, antong University, Nantong. 226019
2. Nantong Huikang International enterprise CO, LTD, Nanlong, 226009
Abstract: The hindered amine light stabilizers(H AIS)UV-292 is synthesized in one step through react
ing dimethyl sebacate with 1, 2, 2.6.6, - pentamethyl-4-piperidinol at 110-120 C for 2. 5h by using petroleum
ether as solvent,tetra-tert-butyl titanate supported on granule activated carbon as catalyst. The oblained
mixture is washed with water at first, then decolorized with activated caron and finally with solvent to give
HALS UV-292, Contents of 1-methyl-8(1. 2.2 6.6-pentamethyl-4-piperidinyl)sebacate(single ester)and bis
1, 2, 2, 6,6-pentamethyl-4-piperidinyl)sebacate (two ester)in products can reach 15-30% (mass fraction)and
65-80% respectively, The yield of HALS UV-292 can reach over 97%o, purity of the stearate 2, 2, 6, 6-tetram-
ethyl-4-piperidinyl ester (single ester and two ester)is over 96, The optimal technological conditions were
given as follows: reaction time 2. 5 h,n (dimethyl sebacate): n (1, 2, 2, 6.6, -pentamethyl-4-piperidinol)equal to
0.1: 0.165, the amounts of catalysts is 1.0 g the amounts of solvent is 40 g(when dimethyl seharate is 0.1 mol)
The catalyst could be used for times without any treatments
Keywords bis (1. 2, 2. 6. 6-peltamethyl-4-piperdimyl)sebacate; 1.2, 2, 6.6, -pentamethyl-4-piperidinol
dimethyl sebacate: I-methyl-8(1, 2, 2, 6,6-pentametlyl-4-piperidinyl)seacale; hindered amine light stabilizer
synthesis
牧稱门期:2011-1-09
金项日1:江汇苏省商通市科技局自然科学基食资助项(项日编号:S12010058;TBA2010023