• 论文最后催化在完成环加成反应过程中的催化机理进行了初步探讨。

    At last, the catalytic mechanism of cycloaddition of propylene oxide with carbon dioxide is discussed.

    youdao

  • 结果通过改变CHC组分可以成功的制备原位固化形成多孔结构的CHC。

    RESULTS: PCHC could be successfully established by in situ solidification through change of CHC component and addition of porous agent.

    youdao

  • 活性氢酰胺羧酸烯烃加成得到化合物,可作脱水和氧化使用。

    Many new compounds can be obtained by addition with water, hydrogen, alcohols, phenols, amines, amides, carboxylic acids, olefins, aldehydes, ketones, esters, etc.

    youdao

  • 环氧基聚二甲基硅氧烷,以化合物固化交联进行新型型硫化硅橡胶的研究。

    By using polydimethylsiloxane containing epoxy groups as base gum, the compounds containing amino groups as crosslinking reagent, a new addition type curable silicone rubber were prepared.

    youdao

  • 介绍聚丙烯进行结晶细化改性方法加成高分子材料共混以及控制温度

    The methods of decreasing spherulite size of polypropylene, such as adding nucleating agents, blending with other polymers and temperature control were introduced.

    youdao

  • 通过采用催化催化硅油烯丙基加成反应合成有机硅聚醚表面活性

    Silicone polyether surfactant was synthesized by the addition reaction of low hydrogen content silicone and allyl polyether with Pt catalyst and under no solvent condition.

    youdao

  • 第二金属催化条件下,使第一步产物缩水甘油发生加成反应生成双子表面活性中间体低聚二醇。

    The second step, the digomeric glycol-intermediate product of Gemini. surfactant was prepared by opening ring reaction of glycide ether in the presence of potassium as catalyst.

    youdao

  • 本文评论了用于硅氢加成反应过渡金属催化

    The transition metal catalysts for hydrosilation are reviewed in this paper.

    youdao

  • 研讨透明等对线型低密度聚乙烯( LLDPE)结构性能影响

    The influence of nucleating transparent agent on the structure and the properties of LLDPE was researched.

    youdao

  • 以均聚聚丙烯(PP)基体树脂,通过制备注塑透明pp专用

    The transparent polypropylene (PP) special material for injection is prepared by adding nucleating agent to homopolymerized PP matrix.

    youdao

  • 讨论了引入催化微波标记微波氚标记过程中脱加成作用影响。

    The influence of a palladium catalyst on the microwave tritium labelling reaction and dehalogenation or addition of the starting materials are discussed.

    youdao

  • 本文综述应用高分子催化手性化合物通过不对称氧化还原烷基化、加成反应进行不对称合成进展情况

    This review deals with the recent progress in asymmetric synthesis using chiral polymeric reagents and catalysts for oxidation, reduction, alkylation and addition of prochiral compounds.

    youdao

  • 我们纯净的,高品质香薰精油包含人工加成经过纯度的测试,保证不杀虫

    Our pure, aromatherapy quality essential oils do not contain synthetic additives; they are tested for purity and guaranteed pesticide free.

    youdao

  • 研究载液相催化制备及其3-氯丙烯与甲基二氯硅硅氢加成反应中的催化性能

    The preparation of supported liquid-phase platinum catalyst, and its catalytic property for hydro-(silylation) reaction of 3-chloropropene were studied.

    youdao

  • 水性环氧固化一般采用多元-环氧加成

    Polyamine - epoxy adduct is used as waterborne epoxy hardener generally.

    youdao

  • 通过研究单核加成基础上提出催化物和氧化生成双核加合物反应机理

    Formation of a dinuclear complex involving the oxidant, catalyst and the substrate has been proposed in the reaction mechanism.

    youdao

  • 通过对反应产物NCO含量黏度测定,考察了TMP水分含量、催化HDITMP摩尔、反应温度、反应时间加成产物影响

    The effect of water content in TMP, catalysts, molar ratio of HDI to TMP, temperature and time on the properties of products was studied by measuring the NCO content and viscosity of products.

    youdao

  • 综述了手性配体金属络合物催化催化1,3 -偶极加成反应研究进展

    The research advances of the chiral ligands metal complexes catalysts used in asymmetric 1, 3-dipolar cycloaddition reactions were reviewed in this paper.

    youdao

  • 本文介绍近年型无硅酮隔离研究状况涂布工艺应用

    The present situation of the research work, coating technology and application of additive solventless silicone release agent in recent years are described in this paper.

    youdao

  • 合成窄分布低摩尔数环氧乙烷加成物具有优良的润湿性作为新型渗透主体基料

    It shows that the low-mole narrow-range ethoxylatsproducts have excellent wetting property and this product can be used as a new material of penetrating agent.

    youdao

  • 粘结单体4META作为陶瓷偶加成分,对树脂粘结帮助

    As an additioner in silane coupling agent, the functional monomer of 4-META can not help the bonding between porcelain and composite resin.

    youdao

  • 研究5A分子筛固载催化制备催化乙炔三乙氧基硅烷硅氢加成反应的催化效果进行了探索。

    The preparation of 5A zeolite supported platinum catalyst, and its catalytic capabilities for hydrosilylation reaction of acetylene with triethoxysilane were studied.

    youdao

  • 考察温度催化用量加料速率等因素苯乙烯与甲基二氯硅烷硅氢加成反应的影响。

    The effects of temperature, the quantity of catalyst used, and reactant feed rate on hydrosilylation was discussed.

    youdao

  • 以乙二胺丙烯酸异辛酯为原料,甲醇为溶催化条件下,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.

    youdao

  • 甲基含氢硅油丙烯酸十二酯为原料,氯催化通过硅氢加成方法直接合成了烷基酯改性硅油

    Modified silicone with long chain acylate is synthesized by hydrosilation of PHMS and lauryl acrylate using chloroplatinic acid as the catalyst.

    youdao

  • 研究加成法制备有球形宏观孔的多孔氮化硅陶瓷不同孔隙率孔径下的介电性能。

    The porosity, pore diameter and solubility of ceramsite filter made by these two methods were analyzed and compared.

    youdao

  • 介绍型有机浸渍基本组成催化、阻聚及其固化机理,并综述国内外加成液体有机硅浸渍漆的应用情况。

    The paper introduces the basic components of an additive liquid silicone impregnating varnish, the catalyst, the inhibitor and its curing mechanism.

    youdao

  • 磷酸催化,催化工业戊烯顺丁烯二酸酐进行异构加成反应。

    In the presence of catalyst phosphoric acid, isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.

    youdao

  • 产品通过调整脂肪醇聚氧乙烯环氧乙烷加成来控制所合 成表面活性HLB

    The product controls the HLB value of synthesized surfactant by adjusting the epoxy ethane adduct number of the fatty alcohol polyoxyethylene ether.

    youdao

  • 关于性配体催化二烷基锌一羰基对称加成生成光活性醇反应催化、不对称催化机理自催化过程、手性放大等方面进行了概述参考文献50篇。

    The title reaction is reviewed with 50 references, the catalysts, the mechanism of asymmetric catalysis, the self-catalyzed process and the chiral amplification phenomenon are discussed.

    youdao

$firstVoiceSent
- 来自原声例句
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定
小调查
请问您想要如何调整此模块?

感谢您的反馈,我们会尽快进行适当修改!
进来说说原因吧 确定