• 头孢普生头孢辛酯有效

    The cefpodoxime proxetl and cefuroxime axetil were both efficient.

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  • 首次硫酸铁用于催化合成马来辛酯

    Ferric sulfate was first used for the synthesis of di 2 ethylhexyl maleate.

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  • 目的制备头孢辛酯评价稳定性

    Objective:To prepare cefuroxime axetil tablets and evaluate their stabilities.

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  • 己二

    Adipic acid bis(2-ethylhexyl) ester;

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  • 研究了用新型催化剂催化合成马来酸二工艺。

    The catalytic properties of solid super acid for the synthesis of dioctyl melate;

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  • 用自燃点法硝酸硝酸辛酯性能进行了试验研究

    Experimental investigation of performance of amyl nitrate and isooctyl nitrate is made.

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  • 采用自燃点法硝酸硝酸异辛酯性能进行了试验研究。

    The autoignition temperature method was adopted in this paper to investigate the performance of amyl nitrate and isooctyl nitrate.

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  • 催化剂制备条件戊二酸二异辛酯合成条件进行了研究。

    The preparation conditions of the complex catalysts and esterification conditions were studied.

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  • 发明涉及微囊化头孢呋药物组合物及其制备方法。

    The present invention relates to one kind of medicine composition of cefuroxime ester microcapsule and its preparation process.

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  • 十二烷基磺酸为催化剂直接合成没食子酸正辛酯

    Then-octyl gallate was prepared by esterification of alcohol and gallic acid in catalysis system of dodecyl benzene sulfonic acid.

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  • 选用重复使用固体催化剂,复相催化合成水杨酸辛酯

    A kind of solid acid catalyst can be used repeatedly as esterification catalyst to synthesize iso-octyl salicylate.

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  • 开发了固定化假丝酵母脂肪酶99 12 5合成棕榈酸异工艺。

    The synthesis of 2-ethylhexyl palmitate by immobilized lipase candida sp. 99-125 was investigated.

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  • 本文介绍了采用直接法制取增塑剂对苯二甲酸二异DOTP)的研究。

    The artical introduced experiment that made DOTP Plasticizer with waste polyester directly.

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  • 正交实验确定工艺条件98%。产品性能指标与已二酸二辛酯相近。

    The process condition was determined by orthogonal test, and the esterification rate of the above reaction reaches to 98%.

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  • 标准溶液以邻苯二甲酸二正辛酯实验室准确配制分装于2毫升安瓿中

    This standard solution was accurately prepared in super-clean laboratory with din-octyl o-phthalate and sub-packed in 2ml ampoules.

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  • 条件下制得硝酸辛酯收率纯度都比较方法安全可靠,适用于化工生产

    In the condition both the yield and purity of isooctyl nitrate are very high. The method is safe and reliable. and suits to chemical production.

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  • 不饱和氨基甲酸、丙烯酸交联悬浮聚合的方法制备吸油性树脂

    Useing unsaturated urethane, 2-ethylhexyl acrylate, crosslinking agent, high oil-absorbent resin was prepared by suspension polymerization.

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  • 醇和羧酸分离为原料,硫酸催化剂合成了戊二酸二辛酯

    The dioctyl glutaricate was prepared by esterification of octyl alcohol and glutaric acid separated from dicarboxylic acid in catalysis of sulfuric acid.

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  • 另外,在NBR胶料中添加25耐寒增塑剂(二甲酸二丁10二酸二15)。

    In addition, 25 PHR of cold resistant plasticizer (dibutyl phthalate 10 PHR; dioctyl sebacate 15 PHR) were added into NBR compound to improve th.

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  • 文中讨论了影响反应外部条件,同时制约水杨酸化率的内在因素作了相应解释

    It not only describes the extraneous factors influencing the esterification, but also explains the internal reasons which restrict the ester value of iso-octyl salicylate.

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  • 采用明胶作为主要材料,利用固体分散技术制备头孢呋颗粒剂,并进行掩味效果稳定性考察

    Cefuroxime Axetil granules were prepared by solid dispersion technique with gelatin as the main materials for masking the bitter. The bitter after masking and the stability were investigated.

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  • 采用-刮-中和吸附-压滤-吸附工艺处理邻二甲酸二辛酯废水处理工艺的运行条件进行了探讨。

    Dioctyl Phthalate wastewater was treated by pressure filtration oil scrapping neutralization adsorption pressure filtration adsorption process, and its operating conditions were explored.

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  • 介绍了偏苯三酸三辛酯工业制取方法,生产技术进行经济分析探讨工业生产存在一些技术问题

    The technology of trioctyl trimellitate is introduced, and an economic analysis on it is undertaken. A few problems existing in its production are also discussed.

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  • 探讨PUR-T、邻苯二甲酸二辛酯DOP导电炭黑用量PVC/PUR-T共材料性能影响

    The effects of PUR-T, DOP and conductive carbon black contents on the performance of PVC/PUR-T blend were discussed.

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  • 以乙二胺丙烯酸辛酯为原料,甲醇为溶剂,催化剂条件下,迈克尔加成反应合成了低代的树枝状化合物

    A lower generation dendritic compound was synthesized from ethylenediamine and iso-octyl acrylate by Michael addition in methanol without catalyst.

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  • 一些研究表明DEHP(邻苯二甲酸二辛酯),(静脉输血袋中用的)乙烯基中包含的一种化学物质具有这样特性

    And there's some research showing that DEHP, this chemical that's in vinyl [used in IV bags], has this property.

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  • 本文苦味酸溴代十六烷基吡啶离子作为活性物质,以邻苯二甲酸二增塑剂研制成以PVC为基质苦味酸离子选择电极

    In the paper, a PVC membrane picric acid anion selective electrode is developed using Bromhexadecyl pyridine picrate ion pair as the active component and dioctyl phthalate as the plasticizer.

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  • 硫化体系采用酚酸树脂2402/氯化亚锡(8/0.5)、加入一定量增塑剂二甲酸二补强高耐磨炭黑,获得性能好的体。

    A blend with better properties could be obtained by adding phenolic resin 2402/tin bichloride (8/0. 5) curative and a certain level of dioctyl phthalate plasticizer and HAF reinforcing agent.

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  • 研究以没食子为原料合成没食子酸正辛酯新工艺 ,讨论了正用量、夹水剂的种类和过量正醇的循环使用次数化反应影响。

    The effects of the amount of sodium bisulfate monohydrate, the amount of n butyl alcohol and reaction time on the yield of n butyl gallate have been investigated.

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  • 本文系统研究了增韧剂氯化聚烯烃(M_1)腈基橡胶(M_2),增塑剂邻苯二甲酸二辛酯P以及几种不同填料对硬质PVC填充体系力学性能影响

    The effects of common impact modifiers M_1 and M_2, plasticizer P and different fillers on the mechanical properties of filled PVC were studied systematically in this paper.

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