异氰酸

The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from an anion selected from 1,2,3- or 1,2,4-triazole, a substituted species of 1,2,3- or 1,2,4-triazole and carbocyclically and/or heterocyclically annellated species of 1,2,3- or 1,2,4-triazole and the cation selected from an alkali metal, alkaline-earth metal and/or monovalent ammonium cation and/or phosphonium cation of formula (5), wherein the E, R1, R2, R3, R4 are as defined in the descriotion.

本发明涉及一种制备低聚异氰酸酯的方法，包括二异氰酸酯在催化剂的存在下进行反应，其中所述催化剂由盐化合物组成，该盐化合物由选自1，2，3-或1，2，4-三唑、1，2，3-或1，2，4-三唑的取代系列者、1，2，4-三唑的碳环稠合系列者、1，2，3-或1，2，4-三唑的杂环稠合系列者的化合物及其混合物的阴离子和选自碱金属、碱土金属和/或通式(5)的一价铵阳离子和/或磷友衾胱拥难衾胱又票福其中E、R 1 、R 2 、R 3 和R 4 如说明书中所定义。

HDI's molecular structure is a special saturated straight chain and it has highly unsaturated double bonds.It has such very lively and chemical properties that can be used to form polyurea with water. And it also reacts with polyurethane to form polyol, reacts with amine to biuret.

己二异氰酸酯分子具有特殊的直链饱和结构和含有高度不饱和双键的异氰酸酯基团，化学性质非常活泼，能够与水生成聚二脲，与多元醇反应生成聚胺酯，与胺反应生成缩二脲。

The catalyst system for polyisocyanates has high reality and prompts to generate thiourea dione accounting for large proportion of polyisocyanates.

本发明所提供的异氰酸酯低聚用催化剂体系，具有高活性并且还促使生成占制成的多异氰酸酯中相当比例的脲二酮。

The salts of fulminic acid differ basically isocyanic acid and its trimers.

雷酸盐基本上不同于异氰酸盐和异氰三聚物的盐。

In our paper,1-hexylcarbamoyl-5-fluorouracils and1-cyclohexyl-carbamoyl-5-fluorouracils were prepared through 5-fluorouracil reacting with hexyl isocyanate or cyclohexyl isocyanate by using dimethylaminopyridine as the catalyst.

以5-氟尿嘧啶(5-FU)、正己基异氰酸酯和环己基异氰酸酯为原料，在N，N-二甲氨基吡啶的催化下，通过N-脲化反应制成1-己基氨基甲酰基-5-氟尿嘧啶及1-环己基氨基甲酰基-5-氟尿嘧啶。

This paper studied competing reaction parameters of isocyanate with alcohol and water at room temperature based on its independent reaction.

摘 要：本文基于异氰酸酯分别与醇和水的独立反应，研究求解了异氰酸酯在室温下与醇和水的竞争反应参数。

The functionality of the isocynate is extremely important to the production of polyurethanes and is determined by the number of isocyanate groups per molecule.

功能的异氰酸是极为重要的，以生产聚氨酯和数量而定异氰酸酯组每分子。

When the concentration of alcohol is same with the water, there is 77.89% consumed isocyanate reacted with water. When the concentration of water is 2 times as alcohol, more than 90% isocyanate reacted with water.

当体系中醇与水的浓度相同时，反应了的异氰酸酯基中有77.89%与水反应；当体系水的浓度是醇的2 倍以上时，将有90%以上的异氰酸酯基与水反应。

The methods of synthesizing polyurethane (Toluene, 2, 4-diisocyanate TDI and Isophorone diisocyanate IPDI) with paper were investigated.

研究了甲苯-2，4二异氰酸酯，异佛尔酮二异氰酸酯对纸张聚氨酯化处理的方法及反应机理。

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。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。