查询词典 isophorone

The results indicated that the total surface basic sites was in favor of increasing catalytic activity, while the higher ratio of medium-strength basic sites was good for improving the selectivity of isophorone.

经过镧改性催化剂的表面总碱量增加，可提高催化剂的活性，但增加的碱量主要位于弱碱性位，因而不利于提高催化剂对于异佛尔酮的选择性。

In this paper, asymmetric synthesis of oxidation reaction of achiral isophorone influenced by artificial centrifugal force field was studied. The reaction system was characterized by UV, Infrared and Circular dichroism.

摘要本文通过紫外、红外和圆二色光谱表征考察了外在离心力场对非手性化合物异佛尔酮不对称氧化生成光学活性产物的影响。

In this paper, asymmetric synthesis of oxidation reaction of achiral isophorone influenced by artificial centrifugal force field was studied. The reaction system was characterized by UV, Infrared and Circular dichroism.

本文通过紫外、红外和圆二色光谱表征考察了外在离心力场对非手性化合物异佛尔酮不对称氧化生成光学活性产物的影响。

The thermal decomposition process of water-solublity blocked isophorone diisocyanate was studied using thermal gravimetric analysis. The characteristic peaks of isocyanante groups at 40 and 140 ℃ were observed by Fourier transform infrared spectroscopy.

采用热失重分析法研究了水溶性封闭型异佛尔酮二异氰酸酯的热分解过程，利用傅里叶变换红外光谱法考察了谱图中40与140℃两种温度下的异氰酸酯特征峰。

The stability of isophorone disocyanate and the affecting factors of in-situ miniemulsion polymerization have been studied to carry out the simutaneous or two-step procesure of polyaddition and radical polymerization.

本文主要研究了水敏性单体IPDI的稳定性和原位细乳液聚合规律，探索在细乳液中分步或同步实现缩聚反应与自由基聚合的新方法，提出了水敏性单体的细乳液聚合实施方法。

A novel polyurethane dispersion with high gloss and excel le nt mechanical properties was prepared with polyether glycol and isophorone diiso cyanate as raw materials and castor oil and 3-aminopropyl-triethoxysilane as cross-linking agents.

探讨了胶膜光泽度与亲水基团及蓖麻油含量的关系，同时研究了氨丙基三乙氧基硅烷的加入对材料的机械性能和耐水性产生的影响。

Polyethylene glycol monomethylether, isophorone diisocyanate and hydroxyl ethyl methacrylate were used as raw materials, the mixmonomer was synthesized.

采用聚乙二醇单甲醚、异氟尔酮二异氰酸酯和甲基丙烯酸β-羟乙酯合成混合单体。

Also discussed is the research direction for development of new phosgenated products ,important among them being IPDI isophorone diiso.

简述了光气化产品开发研究方向，提出重点开发IPDI、NDI (1，5 萘二异氰酸酯)、氯磺酰异氰酸酯和较大分子量的氯代甲酸酯等光气化产品。

The activated hydroxyl of the rare earth complex reacted with the -NCO of the of isophorone diisocyanate,and a new bonding-type rare earth polymer materials was prepared. We studied the optical property, thermodynamic properties of the materials were, and the results obtained show that the materials have high light transmittance and thermal stability as well as good fluorescence properties.

同时利用配合物的活性基团羟基与异佛尔酮－二异氰酸酯中的异氰酸根活性基团进行反应，制备出一种新型的键合型稀土高分子材料，并考察了该材料的光学性能、热力学性能等。

At the same time, some of the pyrolysates are the important favors in cigarette smoke, such as isophorone and megastigmatrienone, etc. The amounts of these pyrolystaes alter with the change of pyrolysis temperatures and the concentration of oxygen. the lutein is applied to cigarettes as flavoring.

分析结果表明，叶黄素的裂解产物主要是甲苯和对-二甲苯等苯及其同系物、1，2–二氢-1，1，6-三甲基-萘和2，7-二甲基萘等萘及其同系物，另外还生成氧化异佛尔酮和巨豆三烯酮等酮类物质和烯烃类物质等，这些物质随着裂解温度和裂解氛围的变化，其种类和峰面积归一化百分含量有所不同。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。