• 乙二醇

    Polyethylene glycol dibutyl ether;

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  • 还涉及制备方法它包括1乙二醇介质

    Its preparing method comprises:1)ethylene glycol monobutyl ether as medium;

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  • 甲基叔丁醚(MTBE)临床试验中的一种溶解

    MTBE is a gallstone dissolving agent in clinical trial.

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  • 微型蒸馏替代常量分水器来制备,既满足分析要求,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.

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  • 另一些接触杀螟松之前分别胡椒基丁醚(pbo)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.

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  • 介绍了乙二醇单丁醚反应机理原料摩尔、反应温度反应时间等因素对合成反应影响

    This paper dealt with reaction mechanisms and synthesis and the effects of raw materials mole ratio, reaction temperature and reaction time.

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  • 一种磷酸酯叔氟水分散体树脂,按树脂的单体重量计,其包括1) 30.0%的乙二醇

    A phosphate ester tert-fluorine water dispersion resin(resin monomer total weight% )comprises:1)30.0% ethylene glycol monobutyl ether;

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  • 清洁胡椒基丁醚生产工艺研究i, 5 -丙基- 1,3 -苯并二氧杂茂的甲基化废水处理

    Studies on Environmentally Sound Technology for Producing Piperonyl Butoxide I. Treatment of Waste Water from Chloromethylation of 5-propyl-1, 3-benzodioxole.

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  • 结论当淡色库产生抗药性采用杀虫剂氧化胡椒基丁醚混用方法,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.

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  • 着重讨论DBP(邻苯二甲酸二酯)生产过程中分子间脱水副反应机理危害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.

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  • 利用改进型乌别洛特毛细管黏度计,对268.123~373.131K温度区间内甲基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.

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  • 利用本文实验数据拟合了甲基丁醚饱和液相粘度方程,方程实验数据平均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.

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  • 研究硫醇烯光固化组成物的反应机理,选用安息香双甲、安息香、安息香正二苯甲酮噻吨酮光敏剂红外光谱法研究了硫醇烯光化学反应动力学

    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.

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  • 盆栽试验研究了2,4 - D油菜素内酯大豆安全性氟磺胺草除草活性的影响

    By pot trial we studied the influence of 2, 4-d butyl and brassinolide to the safety of soybean and to efficacy of fomesafen.

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  • 采用一步合成4 ,4 '-甲烷二环已基二异氰酸酯HMDI)、扩链剂1,4 -二醇(BDO)为硬段,四氢呋喃PTMG)为软段的脂肪聚氨酯

    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).

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  • 产品成分:去离子水甘油二醇芦荟提取液透明尿囊素、苯氧乙醇、维生素c乙基PEG - 40氢化蓖麻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.

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  • 结果表明去除率随辐射剂量增加而上升,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.

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  • 系统研究TBP萃取剂,乙酸二甲苯石油煤油为稀释剂,酸度盐酸溶液中萃取

    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.

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  • 乙酰乙酸叔原料,经过化、化、代酯解反应合成了头孢克

    Cefixime open side chain acid was prepared by oximation, etherification, chlorination, ester decomposition using t-butyl acetoacetate as starting material.

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  • 结果表明2,4—D磺胺、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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  • 结果表明2,4—D磺胺、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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