查询词典 trimethoxy

A steel bar is washed and dried, and then put into a glass pipe which is sealed to obtain stirring magneton; a mixed solvent of Gamma-methacrylate oxide propyl trimethoxy silane and methanol is prepared and added with an organic base to obtain a pre-bonding solvent; the stirring magneton is immerged into the pre-bounding solvent, and the outer surface of the glass pipe of the stirring magneton is bonded with a layer of silane substance with alkenyl; a reactive monomer mixture and a pore-forming agent mixed solvent are evenly mixed and then added into a container, the stirring magneton after the pre-bounding is put into the container which is sealed and then put into a water bath; after reaction, the container is removed, the stirring magneton coated with a polymer is taken out and put into a extractor and extracted by using a solvent; or the stir bar is immersed into the solvent till no impurity can be checked in the solvent, thereby obtaining the product.

将铁条清洗干燥，放入玻璃管内，密封得搅拌磁子；配制γ-甲基丙烯酸氧丙基三甲氧基硅烷与甲醇的混合溶液，加入有机碱得预键合溶液，将搅拌磁子浸入预键合溶液，在搅拌磁子的玻璃管外壁键合一层带烯基的硅烷化物质；将反应单体混合剂和致孔剂混合溶液混匀后倒入容器中，将预键合后的搅拌磁子放入容器，密封后置于水浴中，反应后除去容器，取出涂有聚合物的搅拌磁子，置于提取器中，以溶剂提取，或将搅拌棒置于溶剂中浸泡至溶剂中无杂质检出，得产物。

There were also different components came into being, such as dodecanal, 2-methyl-1-Hexadecanol, Oleic acid eicosyl ester, 9-Octadecenoic acid-phenylmethyl ester, and 7,3',4'-trimethoxy quercetin in each kinds of concentration, and 1-tetradecanol, 1,5,5-trimethyl-6-acetomethyl-Cyclohexen, 2,6-bis(1,1-dimethylethyl)-4-methyl-phenol , 14-á-H-pregna,-5,6,7,7a-tetrahydro-4,4,7a-trimethyl-2(4H)-Benzofuranone, and heneicosane determined in 4 different treatments.

可见，添加蜜糖对黄棪毛茶的香气组分的种类有很大的影响。

The first synthetic route uses 1,2,4-trimethoxybenzene and chloroacetonitrile in forming 2,4,5-trimethoxy-a-chlor-acetophenone under the anhydrous condition, then the intermediate condensates with papaverine forming the core pyrro[2,l-a]isoquinoline, followed by formation and lactonization to form the lactone ring. The second synthetic route uses prepared aldehyde with prepared ethyl nitroacetate by Knoevenagel condensation to obtain 2-Nitro-3-(2,4,5-tris-methoxy-phenyl)-acrylic acid ethyl ester and 2-Nitro-3-(2,4,5-tris-benzyloxy -phenyl)-acrylic acid ethyl ester etal intermediates. The lamellarin skeleton could arise from condensation of the papaverine and these intermediates by Michael reaction, the ester group is provided for subsequent lactonization. The third synthetic route uses coumarin or indan-l,3-dione derivatives and papaverine to form lamellarin under basic conditions.

第一条路线首先从1，2，4-三甲氧基苯出发与卤乙腈作用合成卤代芳酮中间体，然后与罂粟碱反应合成开链片螺素，最后经乙酰化、去保护、成内酯环得到片螺素；第二条路线由制备的芳醛和制备的硝基乙酸乙酯经缩合得到2-硝基-3-芳基丙烯酸乙酯，然后由该中间体与罂粟碱反应，在完成关环的同时也引入酯基，最后去保护、成内酯环得到片螺素；第三条路线是由香豆素或茚二酮出发，经溴代后的中间体与罂粟碱反应，得到片螺素的基本框架。

Three part of research works had been carried out in the dissertation. The first part: a kind of multidentate amine modified silica gel was synthesized through the following steps:(1) introduce the amino groups onto the surface of silica-gel by the treatment of surface silanol groups withγ-aminopropyl trimethoxy silane;(2) michael addition of excess trihydroxymethyl propyl triacrylate to amino groups on the silica gel surface;(3) amidation of the unreacted double bonds of TMPTA on the surface of TMPTA modified silica gel with diethylenetriamine;(4) the multidentate amine modified silica gel was finally obtained by the reaction of amino groups on the surface of DETA modified silica gel with double bond of butyl acrylate.

本论文进行了三部分研究工作，第一部分：通过多步反应对硅胶进行改性合成了一种多齿胺改性硅胶配体，合成过程如下：1通过γ-氨丙基三甲氧基硅烷与硅胶表面的硅羟基反应，使硅胶表面带有氨基；2利用硅胶表面氨基与过量的三羟甲基丙烷三丙烯酸酯发生Michael加成反应；3利用二乙烯三胺与TMPTA改性硅胶表面未反应的双键发生反应使硅胶表面氨基化；4最后用丙烯酸正丁酯与DETA改性硅胶表面氨基充分反应成功合多齿胺改性硅胶配体。

Results Six compounds were isolated and identified as:5α,8α-epidioxy-(22E,24R)-ergosta-6,22-dien-3β-ol,scopoletin,isofraxidin,p-hydroxy benzaldehyde,3,4,5-trimethoxy benzoic acid,protocatechuic acid ethyl ester...

结果得到6个化合物，分别鉴定为：5α，8α表二氧(22E，24R)麦角甾6，22二烯3β醇、东莨菪素、异秦皮啶、对羟基苯甲醛、3，4，5三甲氧基苯甲酸、原儿茶酸乙酯。结论化合物Ⅰ～Ⅵ均为首次从该属植物中分离得到。

Using tetrabutyl titanate and methyl methacrylateor 2-Hydroxyethylmethacrylate (HEMA as materials, methacryloxylpropyl trimethoxy siliane a...

实验结果表明，当n：n(H2O)≥5、HCl浓度在0.3mol/L左右、n：n≥1、预水解时间为12h以及反应时间为6h时，可制得理想的聚丙烯酸酯类-TiO2纳米复合材料。采用红外光谱。。。

Poly silica hybrids were prepared through polymerization, condensation and sol gel processes of the mixture of methyl methacrylate, poly and a small amount of coupling agent methacryloxylpropyl trimethoxy siliane in tetrahydrofuran.

采用溶胶-凝胶技术，以硅酸钠为原料制备聚硅酸/四氢呋喃溶胶，再与甲基丙烯酸甲酯及少许偶联剂甲基丙烯酰氧丙基三甲氧基硅烷(MPTMS 混合，经聚合、缩合和溶胶-凝胶过程制备了有机/无机两相间有— C—Si—O—键的杂化材料——聚甲基丙烯酸甲酯/二氧化硅(PMMA/Si O2 )。

In this study, the amino propyl trimethoxy silane was used for the surface modification of silica, and the modified silica was adsorbed to surface of clay/silica (SiO2 : Clay = 4:1 and 2:1) and the clay/silica was adsorbed by the surfactant. Also, we used Dimethyldistearylammonium chloride and Dodecyltriphenylphosphonium surfactant to modify clay/silica. Then we prepared the Epoxy/clay/silica nanocomposites and Epoxy/clay/silica/DOPO composites.

中文摘要本研究利用胺基矽氧烷改质二氧化矽，并将改质二氧化矽吸附於蒙脱土上(SiO2 ： Clay = 4：1与2：1)再分别以Dimethyldistearylammonium chloride 与Dodecyltriphenylphosphonium界面活性剂改质蒙脱土/二氧化矽并与环氧树脂制备成复材，并且再另外加入含磷阻燃剂 9，10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide与环氧树脂制备成复材。

We have synthesized SiO2-main chain acrylate material successfully. First, the surface of SiO2 nanoparticle was modified with MPS (3-Methacryloxypropyl Trimethoxy Silane). Then TEGDA (Tetraethylene glycol diacrylate) was added to control the amount of organic-inorganic ratio(10-60wt%).

本实验室已成它X成二氧化矽主链压克力混成材料，首先将粒径介於20至25nm的SiO2颗粒表面改质成压克力基，利用MPS(3-Methacryloxypropyl Trimethoxy Silane)经水解与缩合，即接在SiO2颗粒表面，再加入压克力单体TEGDA(Tetraethylene glycol diacrylate)，藉以调控有机无机的比例。

Ambient temperature self-crosslinking acrylic latexes were prepared through semicontinuous emulsion polymerization using 3 different polymerizable alkoxysilanes, i.e. vinyl tri silane (A172), Vinyl triethoxy silane and γ-methacryloxypropyl trimethoxy silane (A174). The hydrolysis of these siloxanes under different pH was characterized, and dependence of the latex and polymer properties on these siloxanes and their incorporated amounts in the polymers was studied.

使用三种含不饱和双键硅氧烷，乙烯基三硅烷(A172)、乙烯基三乙氧基硅烷和γ-甲基丙烯酰氧丙基三甲氧基硅烷(A174)为功能单体，采用半连续乳液聚合法制备了室温自交联丙烯酸酯乳液，探讨了硅氧烷功能单体在不同pH条件下水解情况以及其种类和用量对乳液及乳胶膜性能的影响。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。