Larger pore size is favorable to the ring opening reaction.

孔道尺寸较大的分子筛有利于茚满的转化。

This paper reports a new green ring opening reactions of aziridines with H_2O.

本文主要研究了一种利用氮杂环丙烷开环反应合成邻位氨基醇的有机新反应。

Low acid value resins were synthesized by E10 with low temperature ring opening.

采用E10低温开环酯化合成低酸值树脂。

The intermediate dye can then undergo an acid catalyzed ring opening to produce a colored dye form.

然后中间体染料可进行酸催化的开环，以产生有色染料形式。

Results showed that imidazoline was hydrolyzed to amide by ring opening reaction under high temperature.

试验结果表明，高温条件下，咪唑啉发生开环反应，生成了酰胺类物质。

This article reviews the ring opening reaction of five membered nitrogen containing heterocyclic compounds.

综述了近年来各种五元氮杂环的开环反应及其在有机合成中的应用。

It was found that the ring opening polymerizations of epoxide based monomers with THEIC can be carried out in a heterogeneous medium smoothly.

发现THEIC与环氧单体可在非均相体系中平稳地进行阳离子开环聚合反应。

Dimethyldiphenyl RTV silicone rubber with low phenyl contents was synthesized by ring opening copolymerization of phenyl cyclic siloxane with DMC.

以苯基环体、二甲基环硅氧烷为原料，在催化剂存在下，经开环共聚、降解、脱除低沸物，制得低苯基含量的二苯基硅橡胶。

Bicyclic fused aziridines can generate regioselective ring opening reaction with various alcohols, catalyzed by slight concentrated sulfuric acid.

用醇作溶剂、微量的浓硫酸作催化剂，稠合双环氮杂环丙烷衍生物可发生区域选择性氮杂环开环反应。

The hydrogenation saturation of aromatics and selective ring opening of cycloalkane were the most important process during deep dearomatization of diesel oil.

单环芳烃的加氢饱和与环烷烃的选择开环是柴油深度脱芳过程中的重要反应。

This paper reviews briefly recent developments in the regio and stereoselective ring opening of 2, 3 epoxy alcohols and their derivatives by a variety of methods.

简要综述了对2,3 -环氧醇及其衍生物进行区域及立体选择性开环的各种方法的近期进展。

Ring opening reaction of 2, 3-epoxy ketones with nitric oxide in dichloromethane occurred in a syn-selective fashion, producing syn-2-hydroxy nitrates as main products.

在二氯甲烷溶液中，一氧化氮导致2,3 -环氧酮发生顺式开环反应，生成的顺式羟基硝酸酯化合物为主要产物。

Polylactic acid (PLA) is a linear aliphatic polyester produced by poly-condensation of naturally produced lactic acid or by the catalytic ring opening of the lactide group.

聚乳酸(PLA)是一种线性脂肪族聚酯的聚乳酸中自然产生的或由丙交酯开环缩合催化剂组产生。

The ring opening polymerization of aminoacid N-carboxyanhydrides ( NCAs) was applied to the synthesis of cylindrical polypeptide brushes by using the " grafting from" technique.

本文通过“胺”引发氨基酸酸酐开环聚合机理及“表面接枝”路线合成柱状多肽分子刷。

The degree of hydrocarbon evolution increases with depth, which is accompanied by demethylation of alkanes, ring opening of cycloalkanes, aromatization and heightening alkylating degree.

随着演化程度加深，链烷烃脱甲基、环烷烃开环作用、芳构化作用和烷基化程度不断提高。

The synthesis of oxyethylene oxypropylene copolyethers used for quenchant was studied by using anionic ring opening polymerization, diol or triol as the starting agent and KOH as the catalyst.

研究了以KOH为催化剂，二元或三元醇为起始剂，采用阴离子开环聚合合成淬火剂用共聚醚。 结果表明：产物的分子量随起始剂和杂质量的减少而增加；

Tribenuron-methyl is synthesized via ring-opening reaction, phosgenation and condensation.

经过开环、光气化、缩合等一系列反应制备了苯磺隆。

Such a rematch would add a little extra spice to opening night, especially if Dirk received his ring right in front of LeBron before tipoff.

这样的重赛将会给我们的揭幕战增添一些别样的趣味的，尤其是德克诺维斯基在勒布朗等人的面前领取自己的总冠军戒指。

What a moment it will be when we ring the Centennial bell to signify the opening of the Centennial Convention in Chicago!

当我们宣布在芝加哥敲响百年纪念钟，象征百周年纪念年会正式开始时，那会是多美好的一刻！

Showing that the country has a sense of humour, dancers during the opening section of the show mocked the moment a ring failed to open during the opening ceremony.

在闭幕式的开头，舞者们模仿了开幕式中因技术故障未能绽放的第五环，展现出俄罗斯的幽默感。

A large opening in the elliptical ring is intended to invite passersby into the internal courtyard.

椭圆环中的大开口旨在邀请路人进入内部庭院。

Polylactic acid synthesis in two major ways:direct polymerization and lactate lactide ring-opening polymerization.

聚乳酸的合成方法主要有两种：乳酸直接聚合和丙交酯开环聚合。

Using sodium dicyandiamide and saccharin as raw materials, tribenuron-methyl is synthesized via ring-opening reaction, phosgenation and condensation with total yield of 57.

以双氰胺钠和糖精为起始原料，经过开环、光气化、缩合等一系列反应制备了苯磺隆，合成反应的总收率可达57。

Synthetic reactions of hyperbranched polymers included condensation reaction, addition reaction, ring - opening reaction, grafting reaction, etc.

超支化聚合物的合成反应主要有缩聚反应、加成反应、开环聚合、接枝反应等。

There are two main methods to synthesis PLA, condensation polymerization of lactic acid and ring-opening polymerization of lactide.

聚乳酸的合成主要有两种方法：乳酸直接缩聚和丙交酯的开环聚合。

There are two main methods to synthesis PLA, ring - opening polymerization of lactide and condensation polymerization of lactic acid.

聚乳酸的合成主要有两种方法：丙交酯的开环聚合和乳酸直接缩聚。

Poly(L-lactide)(PLLA) was synthesized by ring-opening polymerization of L-lactide using cyclic tin alkoxide compound as initiator.

以环烷氧锡化合物引发L-丙交酯开环聚合制备高分子量聚L-乳酸。

The of polylactic acid(PLA) was obtained by ring-opening polymerization and the synthesis conditions to get 444,848 molecular weight were optimized.

采用间接开环聚合法合成了平均分子量为444 ，848的聚乳酸，并对合成工艺作了优化。

Figure 7... Several monomers for cationic ring... opening polymerization.

图7…几种阳离子开环聚合的单体。