聚乙二醇二丁醚;
还涉及其制备方法,它包括:1)乙二醇独丁醚为介质;
Its preparing method comprises:1)ethylene glycol monobutyl ether as medium;
甲基叔丁醚(MTBE)是在临床试验中的一种胆石溶解剂。
用微型蒸馏头替代常量分水器来制备正丁醚,既能满足分析要求,又能节省实验经费。
It reports that n-butyl ether can be prepared in microscale experiment with a microscale distillation head.
另一些鱼在接触杀螟松之前分别用胡椒基丁醚(pbo)和磷酚三苯酯(TPP)做预处理。
Fish were also pretreated with piperonyl butoxide (PBO) or triphenyl phosphate (TPP) and then exposed to fenitrothion.
介绍了乙二醇单异丁醚的反应机理及原料的摩尔比、反应温度和反应时间等因素对合成反应的影响。
This paper dealt with reaction mechanisms and synthesis and the effects of raw materials mole ratio, reaction temperature and reaction time.
一种含磷酸酯叔氟水分散体树脂,按树脂的单体总重量计,其包括:1) 30.0%的乙二醇独丁醚;
A phosphate ester tert-fluorine water dispersion resin(resin monomer total weight% )comprises:1)30.0% ethylene glycol monobutyl ether;
清洁的胡椒基丁醚生产工艺的研究i, 5 -丙基- 1,3 -苯并二氧杂茂的氯甲基化废水的处理。
Studies on Environmentally Sound Technology for Producing Piperonyl Butoxide I. Treatment of Waste Water from Chloromethylation of 5-propyl-1, 3-benzodioxole.
结论当淡色库蚊产生抗药性后,采用杀虫剂与氧化胡椒基丁醚混用的方法,可以减少杀虫剂的使用剂量,取得较好防治效果。
Conclusion the lower dosage of commonly used insecticides mixed with Piperonyl Butoxide may have better control efficacy after the resistance of mosquitoes to insecticides was produced.
着重讨论了DBP(邻苯二甲酸二丁酯)生产过程中,丁醇分子间脱水生成丁醚的副反应机理及危害,并找出了预防副反应发生的措施。
Discusses the mechanism and harmfulness of undesired formation of butyl ether by inter-molecular dehydration of n-butanol during DBP production. Preventive measures are also provided.
利用改进型的乌别洛特毛细管黏度计,对268.123~373.131K温度区间内的甲基叔丁醚的饱和液相黏度进行了实验研究。
The viscosity of saturated liquid methyl tert-butyl ether(MTBE) was presented over the temperature range from 268.123 to 373.131 K with a calibrated Ubbelohde-type capillary viscometer.
利用本文实验数据拟合了甲基叔丁醚饱和液相粘度方程,方程和实验数据的平均和最大相对偏差分别为0.49%和1.21%,可以满足工程实际应用.。
The experimental data of this work were correlated as a polynomial function of the temperature. The average and maximum relative deviation were 0.49% and 1.21%, respectively.
为研究硫醇烯光固化组成物的反应机理,选用安息香双甲醚、安息香乙醚、安息香正丁醚、二苯甲酮和噻吨酮为光敏剂,用红外光谱法研究了硫醇烯的光化学反应动力学。
The kinetics of thiol-ene reaction is studied by Fourier Transform Infrared when benzoin dimethyl ether, benzoin ethyl ether, benzoin butyl ether, benzophenone and ITX were used as photosensitizer.
盆栽试验研究了2,4 - D丁酯、油菜素内酯对大豆的安全性和对氟磺胺草醚除草活性的影响。
By pot trial we studied the influence of 2, 4-d butyl and brassinolide to the safety of soybean and to efficacy of fomesafen.
采用一步法合成以4 ,4 '-甲烷二环已基二异氰酸酯(HMDI)、扩链剂1,4 -丁二醇(BDO)为硬段,聚四氢呋喃醚(PTMG)为软段的脂肪族聚氨酯。
The one step method was adopted in this study to synthesize aliphatic polyurethane with 4,4 methylene dicyclohexyl diisocyanate(HMDI), 1,4 butanediol(BDO) and poly (tetrahydrofuran)(PTMG).
产品成分:去离子水、甘油、丁二醇、芦荟提取液、透明质酸、尿囊素、苯氧乙醇、维生素c乙基醚、PEG - 40氢化蓖麻油、EDTA -二钠、香料。
Ingredients: Deionized Water, Glycerin, Butanediol, Aloe Extract, ha, Allantoin, Phenoxyethanol, Ethyl Ascorbic Acid, PEG-40 Hydrogenated Castor Oil, EDTA-Disodium Salt, Essence.
结果表明,丁硫醚的去除率随辐射剂量的增加而上升,去除反应符合一级动力学;
The results show that the degradation efficiency of DBS increases with the accretion of radiation dose of gamma rays and the degradation reaction of DBS seems following first-order kinetic.
系统研究了以TBP为萃取剂,乙酸丁酯、二甲苯、石油醚、煤油为稀释剂,从高酸度盐酸溶液中萃取镓。
Extraction of Gallium from high concentration HCl solution using organic phases which composes of TBP and butyl acetic ester, xylene, petroleum ether and kerosene, respectively, are investigated.
以乙酰乙酸叔丁酯为原料,经过肟化、醚化、氯代酯解反应合成了头孢克肟开环侧链酸。
Cefixime open side chain acid was prepared by oximation, etherification, chlorination, ester decomposition using t-butyl acetoacetate as starting material.
结果表明:2,4—D丁酯与氟磺胺草醚、精稳杀得混用具有提高除草效果的作用;
The results showed that: there was synergism to combination between 2,4-D butyl and fomesafen, fluazifop-p-butyl;
结果表明:2,4—D丁酯与氟磺胺草醚、精稳杀得混用具有提高除草效果的作用;
The results showed that: there was synergism to combination between 2,4-D butyl and fomesafen, fluazifop-p-butyl;
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