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- This paper reports studies of IR spectra of a series of macrocyclic polyethers and their substitution derivatives and the information of steric effect in the molecule. 内酯冠醚化合物的红外光谱研究报道很少,特别是随醚环的扩大和醚环骨架上不同取代基的引入所引起的中红外光谱的变化尚缺乏研究。
- Some viewpoints about the technique are presented according to the development of macrocycle polyether chemistry and rich resources of the rare earths in our country. 并根据大环多元醚化学的发展和我国丰富的稀土资源提出了该项技术的一点看法。
- macrocyclic polyether 大环多醚
- Polyether types of polyurethane rubber. 聚醚多元醇与二异氰酸酯类化合物聚合制得的橡胶。
- Keywords Macrocyclic polyethers crown ethers organic synthesis phase transfer catalysis electroactive substances.; 大环多元醚;相转移催化;电活性物质;
- Cucurbituril is a macrocyclic cavitand compound with two portals. 葫芦脲是一种具有大环空腔、两端开口的葫芦状分子。
- Of tacrolimus or other drugs known macrocyclic allergy. 对他克莫司或其它大环类药物已知过敏者。
- A raw rubber for millable polyether polyurethane elastomer was prepared. 研制了一种新型的聚醚型聚氨酯生胶。
- Polyether diol mainly adopts polytetramethylene ether glycol (PTMEG). 聚醚二醇主要采用聚四氢呋喃醚二醇（PTMEG）。
- A new poly-sodium complex (Na3L) of a macrocyclic Schiff base was studied byAPCI and ESI mass spectrometry. 对新合成的大环Schiff碱－钠配合物（配体L的分子量为673），用电喷雾电离（ESI）及大气压化学电离（APCI）进行了质谱分析，并将其与快原子轰击（FAB）质谱分析结果进行了比较。
- Cyclopentadecanolide which a macrocyclic musk compound is one of the best perfume of musk. 目的研究高效液相色谱法测定合成化妆品香料麝香酮及黄蜀葵酮含量。
- Macrocyclic polymers have been obtained in the presence of cyclic thio-compound. 在环硫化合物存在下，获得了环形聚合物；
- Objective To explore the technique of the cooperation of nursing in auto-mixed polyether rubber impressions applying. 目的:探讨临床应用自动混合型聚醚橡胶制取印模时护理配合技巧。
- Microwave Irradiation Accelerated Detosylations of Poly(P-tosyl) Macrocyclic Polyamines. 魏俊发; 石先莹; 何地平; 马别厚.
- Studies of CFC-free formulation for flexible polyether PU foam is described in this paper. 本文介绍聚醚型软质聚氨酯泡沫塑料无氟氯烃配方的研究.
- The synthetic conditions and purifying methods of the intermediates and macrocyclic ligands were studied. 对中间体及产物的合成和分离纯化方法进行了讨论。
- A myriad of co-oligomers is possible: epoxy, urethane, polyester, polyether, amine and combinations are available. 它具有多种改性低聚体：环氧类、聚氨酯类、聚酯类、聚醚类和胺改性的。
- As for polyether PUA, Darcocur 4265 is preferred, and curing rate is fastest when neutralization degree is 80%. 在光固化性能方面，对于聚醚型PUA优选Darocur 4265，中和度为80%25时光固化速度最快；
- With the compounding of polyether glycol and triol, the foam sealant can get good allround properties. 聚醚二醇和聚醚三醇复配使用,可制得综合性能良好的单组分聚氨酯泡沫胶体系。
- A process of purifying polyether polyols with high activity and low unsaturated degree was studied. 对高活性低不饱和度聚醚多元醇的精制进行了研究。
