A Study on Metabolic Pathways of 2,6-di-tert-butylphenol Degradation by Alcaligenes F-3-4;
产碱菌株F-3-4降解2,6-二叔丁基苯酚机理研究
The antioxidant intermediate compound 2,6-di-tert-butyl-4-nitrophenol was synthesised through the reaction of 2,6-di-tert-butylphenol with the solution of petroleum ether.
以2,6-二叔丁基苯酚为原料,石油醚为溶剂,通过硝化反应合成了抗氧剂中间体2,6-二叔丁基对硝基苯酚,并采用元素分析和红外光谱对其结构进行表征。
3,5-Di-tert-butyl-4-hydroxylbenzyl methyl ether,an important intermediate of the antioxidant 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl) benzene,was efficiently synthesized by reacting 2,6-di-tert-butylphenol with paraformaldehyde and methanol in the presence of dimethylamine as catalyst.
结果表明,以150 g 2,6-二叔丁基苯酚为基准,催化剂用量为2,6-二叔丁基苯酚质量的5%,聚甲醛30 g,甲醇550 mL,反应温度130℃,反应时间6 h,收率达到90%,纯度为97%,用甲醇重结晶后纯度达到99。
The shortcoming such as easily migration,volatile and low antiaging efficiency of 2,6-di-tert-butyl-4-methylphenol(BHT) as synthetic rubber antioxidant was analyzed,the mechanism of antiaging of BHT and bridged alkylene phenols were explained,and the advantage,synthetic methods of bridged alkylene bisphenols were introduced with 20 references.
分析了2,6-二叔丁基-4-甲基苯酚(BHT)作为合成橡胶防老剂存在易迁移、易挥发、抗老化效率低等问题,阐述了BHT与桥键烷基酚类防老剂的作用机理,介绍了桥键烷基酚类防老剂的优势、合成方法,指出用桥键烷基酚及其衍生物取代BHT是合成橡胶防老剂发展的方向。
