塑料助剂
塑料助劑
소료조제
PLASTIC ADDITIVES
2012年
1期
24-27
,共4页
双(1,2,2,6,6-五甲基-4-哌啶)癸二酸酯%1-甲基-8-(1,2,2,6,6-五甲基-4-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
雙(1,2,2,6,6-五甲基-4-哌啶)癸二痠酯%1-甲基-8-(1,2,2,6,6-五甲基-4-哌啶)癸二痠酯%癸二痠二甲酯%1,2,2,6,6-五甲基-4-羥基哌啶%受阻胺光穩定劑%閤成
쌍(1,2,2,6,6-오갑기-4-고정)계이산지%1-갑기-8-(1,2,2,6,6-오갑기-4-고정)계이산지%계이산이갑지%1,2,2,6,6-오갑기-4-간기고정%수조알광은정제%합성
bis (1,2,2,6,6-pentamethyl-4-piperdimyl)sebacate%1,2,2,6,6,-pentamethyl-4-piperidinol%dimethyl sebacate: 1-methyl-8(1,2,2,6,6- pentamethyl-4-piperidinyl)sebacate%hindered amine light stabilizer%synthesis
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,-定比例的癸二酸二甲酯和1.2.2.6,6-五甲基-4-羟基哌啶在110~120qC下缩合反应2~5h。然后水洗、活性炭脱色、脱溶齐4等后处理操作。-步合成了产物受阻胺光稳定剂(HALS)UV-292,其中1-甲基-8-(1,2,2,6.6-五甲基-4-哌啶)癸二酸酯(单酯)质量分数为15%~30%和双(1,2,2,6,6-五甲基-4-哌啶基1癸二酸酯(双酯1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0.1IYIOl的情况下,n(癸二酸二甲酯):n(1。2,2,6,6-五甲基-4-羟基哌啶)为0.1:0.165,催化剂用量为1.0g、溶剂的用量为40g。催化剂不经处理可循环使用多次,
以石油醚為溶劑,顆粒狀活性炭負載四丁基鈦痠酯為催化劑,-定比例的癸二痠二甲酯和1.2.2.6,6-五甲基-4-羥基哌啶在110~120qC下縮閤反應2~5h。然後水洗、活性炭脫色、脫溶齊4等後處理操作。-步閤成瞭產物受阻胺光穩定劑(HALS)UV-292,其中1-甲基-8-(1,2,2,6.6-五甲基-4-哌啶)癸二痠酯(單酯)質量分數為15%~30%和雙(1,2,2,6,6-五甲基-4-哌啶基1癸二痠酯(雙酯1質量分數為65%~80%),收率超過97%.純度不低于96%。得到瞭優化的工藝條件:反應時間為2.5h,在癸二痠二甲酯為0.1IYIOl的情況下,n(癸二痠二甲酯):n(1。2,2,6,6-五甲基-4-羥基哌啶)為0.1:0.165,催化劑用量為1.0g、溶劑的用量為40g。催化劑不經處理可循環使用多次,
이석유미위용제,과립상활성탄부재사정기태산지위최화제,-정비례적계이산이갑지화1.2.2.6,6-오갑기-4-간기고정재110~120qC하축합반응2~5h。연후수세、활성탄탈색、탈용제4등후처리조작。-보합성료산물수조알광은정제(HALS)UV-292,기중1-갑기-8-(1,2,2,6.6-오갑기-4-고정)계이산지(단지)질량분수위15%~30%화쌍(1,2,2,6,6-오갑기-4-고정기1계이산지(쌍지1질량분수위65%~80%),수솔초과97%.순도불저우96%。득도료우화적공예조건:반응시간위2.5h,재계이산이갑지위0.1IYIOl적정황하,n(계이산이갑지):n(1。2,2,6,6-오갑기-4-간기고정)위0.1:0.165,최화제용량위1.0g、용제적용량위40g。최화제불경처리가순배사용다차,
The hindered amine light stabilizers(HALS) UV-292 is synthesized in one step through react- ing dimethyl sebacate with 1,2,2,6,6,-pentamethyl-4-piperidinol at 110-120℃ for 2.5h by using petroleum ether as solvent , tetra-tert-butyl titanate supported on granule activated carbon as catalyst. The obtained mixture is washed with water at first, then decolorized with activated carbon 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%,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 sebacate is 0.1 tool). The catalyst could be used for times without any treatments.