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- The refined process of 2,6 di tert butyl 4 methylphenol is studied by means of batch distillation and the design of technological process on the basis of the result is completed. 采用间歇精馏方法,对2,6二叔丁基对甲苯酚的精制过程进行了研究,并根据研究结果进行了工艺过程的设计。
- Good results have been obtained for both polyether urethane and nitrate esters when using 2,6 di t butyl 4 methyl phenol(BHT) as stabilizer. 2 ,6-二叔丁基 - 4 -甲基酚 (BHT)对硝酸酯和聚氨酯粘结剂均具有良好的稳定作用。
- Hexamethylene glycol bis[3 (3,5 di tert butyl 4 hydroxyphenyl)] propionate was synthesized without solvent with methyl 3 (3,5 di tert butyl 4 hydroxyphenyl) propionate and hexamethylene glycol as raw materials and organic tin as catalyst. 以 3 -(3 ,5 -二叔丁基 -4-羟基苯基 )丙酸甲酯 (简称 3 ,5 -甲酯 )与 1 ,6-己二醇为原料 ,有机锡为催化剂 ,在无溶剂的条件下合成了己二醇双 [3 -(3 ,5 -二叔丁基 -4-羟基苯基 ) ]丙酸酯。
- Keywords addition reaction;selectivity;potassium tert butoxide;methyl (3;5 di tert butyl 4 hydroxyphenyl) propionate; 加成反应;选择性;叔丁醇钾;3.;5-二叔丁基-4-羟基苯丙酸甲酯;
- Keywords 2;6 di tert butyl 4 methylphenol (BHT);oxygenfreeradicals;antioxidation; 二叔丁基-4-甲基苯酚;氧自由基;抗氧化作用;
- Visiting time in this hospital is from 4 to 6. 这家医院的探望时间是从4点到6点。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4点25分吧。
- Keywords methyl 3;5 di tert butyl 4 hydroxyphenylpropionate;1;6 hexanedimine;aminolysis;reaction mechanism;reaction kinetics; 二叔丁基-4-羟基苯丙酸甲酯;己二胺;氨解反应;反应机理;反应动力学;
- A monthly is more economical than 4 weeklies. 一张月票比四张周票上算。
- He is remanded on his own recognizance of$4,000. 在保证付款4,000美元后他被还押(以后再出庭)。
- The doors were numbered 2,4, 6 and 8. 这些门编为2、 4、 6、 8号。
- The compound butyl rubber is calendered. 将混制成的丁基橡胶进行精压。
- We were routed out of our beds at 4 am. 清晨 4 点钟就把我们从床上叫起来了。
- The next postal delivery is at 4 o'clock. 下一次邮递时间是四点钟。
- He was said to have salted away $4 million. 据说他已积蓄了四百万美元。
- To bring a butyl group into(a compound). 丁基化将丁基组引入(某化合物)
- Subtract 3 from 7 and you have 4. 七减三得四。
- The champion is running in lane 4. 冠军跑在第四跑道上。
- We can't get Channel 4 on our television. 我们的电视机收看不到第4频道的节目。
- Our flight is boarding at gate number 4. 我们的航班在四号门登机。