查询词典 methacrylate

The title anti-fogging coating was prepared from film-forming substance such as UV curing of n-butyl methacrylate,β-hydroxy ethyl acrylate,acrylamide and sodium propenyl alkyl ether hydroxyl sulfonate,and proper solvents, crosslinker s,photoinitiators and additives.

以光敏丙烯酸酯低聚物、甲基丙烯酸丁酯、丙烯酸-β-羟乙酯、丙烯酰胺及丙烯基烷醚羟磺酸钠为主要成膜物质，再配以适量的溶剂、交联剂、光敏剂及各种助剂制成UV固化防雾涂料。

Compared with organic modifications by propyl methacrylate and vinyl groups, the octyl-modification can improve the oxygen sensing properties most efficiently.

与甲基丙烯酸丙酯基和乙烯基相比，在凝胶载体中引入辛基修饰能够最有效地改善薄膜体系的发光氧气传感性能。

Polymethyl methacrylate is the most used filling materials at present; There is not significant difference between unipedicular and bipedicular vertebroplasty; Using vertebral body venography and appropriate dense bone cement can reduce leakage of bone cement; Bolster for self-replacement can rebound vertebral body height, and balloon kyphoplasty and sky bone expander kyphoplasty can be avoided; In order to reduce refracture of vertebral body, anti-osteoporosis drugs should be used in the treatment of percutaneous vertebroplasty.

聚甲基丙烯酸甲酯是目前最常用的填充物；单侧注射和双侧注射疗效没有明显差别；应用对比剂及掌握合适的骨水泥黏稠度可以减少骨水泥的渗漏率；成形前腰部垫枕自身复位可以恢复椎体的高度，避免采用操作复杂及价格昂贵的球囊后凸成形及骨膨胀椎体后凸成形；进行经皮椎体成形时应该配合应用抗骨质疏松药物，以减少椎体再骨折的发生。

When SiO〓-NH〓-Rh-Co complex was used to catalyze the hydroformylation of methyl methacrylate, an optimal conversion of 93.4% and optimal selectivity of 84.4% for the normal aldehyde were both obtained at Rh/Co ratio of 2/1, which were both higher than that catalyzed by SiO〓-SiNH〓-Rh and SiO〓-Si-NH〓-Co momometallic catalysts. Clearly a synergistic action between Rh and Co atoms presented in the complex.

我们以SiO〓-Si-NH〓-Rh-Co催化甲基丙烯酸甲酯的醛化反应，当催化剂中Rh/Co比为2/1时，催化活性最高，可达93.4％，对正构产物β-甲酰异丁酸酯的选择性达到84.4％，都高于单金属催化剂，表明了金属间存在相互作用。

Methacryloyloxydecyl-2-thiouracil-5-carboxylate was synthesized from the reaction of thiouracil with diethyl ethoxymethylene malonate and ω-hydroxy-decyl-methacrylate.

以硫脲、乙氧基次甲基丙二酸二乙酯和甲基丙烯酸ω-羟癸酯为主要原料合成了一种新的粘接性单体10-甲基丙烯酰氧癸基－2-硫脲嘧啶－5-羧酸酯。

In DMSO, the polymerization of methyl methacrylate could be carried out efficiently. However the photopolymerization was inhibited in acetonitrile. It was ascribed to the complex formed between coumarin 1 and HTIB photolyzed to unreactive species after irradiation in acetonitrile.

在一般极性溶剂中如DMSO中能有效地引发甲基丙烯酸甲酯光聚合，而在电子受体性质的极性溶剂如乙腈中，光聚合反应受阻，这归结于香豆素1与羟基苯基碘鎓盐形成络合物，使得光反应后生成不具活性的产物。

Third, Polymerization behaviors of alkenyl substituted Cp Lanthanide complexes as Methyl Methacrylate polymerization catalysts were also studied.

最后，本文还分别考察了烯丁基和烯丙基取代茂的稀土络合物对甲基丙烯酸甲酯的催化聚合反应。

This paper contains three parts: 1 Synthesis of novel titanium complexes; 2 Polymerization behaviors of alkoxyl substituted Cp Titanocenes as catalysts for styrene syndiotactic polymerization; 3 Polymerization behaviors of alkenyl substituted Cp Lanthanocenes as Methyl Methacrylate polymerization catalysts.

中文题名新型茂钛、噁唑啉钛络合物的合成、表征以及茂钛、茂稀土络合物催化性能的研究副题名外文题名 Synthesis，characterization of novel Cp，oxazoline titanium complexes and polymerization behaviors of titanocenes and lanthanocenes 论文作者张浩导师钱延龙黄吉玲学科专业应用化学研究领域\研究方向金属有机与均相催化学位级别博士学位授予单位华东理工大学学位授予日期2003 论文页码总数148页关键词金属有机化学稀土络合物噁唑啉类钛络合物茂钛络合物馆藏号BSLW /2003 /O627 /27 本论文包括三部分内容：1）有机金属钛络合物的合成；2）烷氧基取代茂钛络合物催化苯乙烯间规聚合的研究；3）烯基取代茂稀土络合物催化甲基丙烯酸甲酯聚合的研究。

In regard to C〓-functionalized hydrophilicpolymer , we synthesized the adducts of C〓 with polyallyl-amine and poly( allylamine- co -hydroxypropyl methacrylate ).

作为〓修饰的水溶性高分子体系，我们合成了烯丙基胺均聚物和烯丙基胺-甲基丙烯酸羟丙酯共聚物，并使之与〓进行反应。

Using N, N-dimethyl-ethylenediamine as cationic substitute and 2-hydroxyethyl methacrylate or allylamine as co-substitute, a kind of pH-sensitive polyorganophosphazenes bearing unsaturated side group was prepared.

以N，N-二甲基乙二胺为阳离子型取代基，甲基丙烯酸羟乙酯或烯丙胺为共取代基，制备了同时带有pH响应性侧基和不饱和双键侧基的聚膦腈。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。