paraldehydism

Synthesis of 1 - hexene by trimerization of ethylene;

乙烯三聚制1-己烯的研究

Methods for the modification of isocyanates include process of urethane,dimerization,trimerization,biuret,carbodiimide,and blocking reaction,etc.

异氰酸酯的改性方法包括氨酯改性、二聚改性、三聚改性、缩二脲改性、碳化二亚胺改性和封闭改性等。

Quaternary ammonium salt,triethylenediamine and Mannich base used as catalysts in trimerization of IPDI was studied.

研究了季铵盐等催化剂对异佛尔酮二异氰酸酯(IPDI)三聚反应的催化效率,探讨了季铵盐用量、反应温度、反应时间等工艺参数的影响,结果表明,季铵盐具有较好的催化活性;当季铵盐催化剂质量分数为0。

Research on removal of nitrogen and carbon in wastewater from melamine production;

三聚氰胺生产废水脱氮除碳的试验研究

Study on the Water Resistance of Low Toxic Urea-formaldehyde Resin Modified with Melamine;

三聚氰胺改性低毒脲醛树脂耐水性研究

Hydrogen-bonding Interactions in Co-crystals of Melamine and 1,3-Benzenedisulfonic Salt;

三聚氰胺与1,3-苯二磺酸盐共晶中的氢键作用

Synthesis of a 1,3,5-triazin Derivative by cyanuric chloride and hexane-1,6-diamine;

用三聚氯氰和己二胺合成均三嗪衍生物的研究

Progress in the study of active monomers and polymers prepared from cyanuric chloride;

三聚氯氰在活性单体及聚合物合成中的应用研究进展

A Study in Material Selection and Failure Mechanism for Cyanuric Chloride Plant Polymerization Reactor;

三聚氯氰装置聚合反应器的材料选择及失效机理研究

Theoretical Study on the Hydrogen Bonding Structures and Properties of 4-pyridinemethanol Dimer and Trimer;

4-羟甲基吡啶二聚体和三聚体氢键结构性质的理论研究

Using DMP-30 as catalyst,the various contents of trimer were synthesized from pure MDI.

利用2,4,6-三(二甲胺基甲基)苯酚作三聚催化剂对纯MD I进行三聚合成,得到一系列不同三聚体浓度的标准样品。

Methods Synthesize compounds by using the nucleophilic substituion of 4,4′-Bi(dichloro-s-triazinyl)aminodiplenylmethane with cyanuric chloride and make them characterized by elementary analysis,IR and 1HNMR.

方法通过4,4′-二氨基二苯甲烷和三聚氰氯的亲核取代反应进行合成,并通过元素分析、红外光谱和核磁共振对其结构进行表征。

A novel phosphorus-containing triazine polymer, used as flame retardant for polymers, was synthesized from triethyl phosphite, cyanuric chloride and anhydrous piperazine via intermediate, triazinyl phosphate.

以亚磷酸三乙酯、三聚氰氯和无水哌嗪为原料,合成了一种新型的含磷三嗪环聚合物,采用凝胶渗透色谱、傅里叶变换红外光谱、核磁共振对中间体三嗪环磷酸酯和产物含磷三嗪环聚合物的结构进行了表征,并采用热重分析对含磷三嗪环聚合物的热稳定性进行了分析。

A phosphorus-containing triazine oligomer was synthesized from triethyl phosphite,cyanuric chloride,pentaerythritol and morpholine through three steps.

以亚磷酸三乙酯、三聚氰氯、季戊四醇和吗啉为原料,经3步反应合成了含磷三嗪环低聚物,考察了反应条件对中间体及产物收率的影响,对中间体及产物的结构和热性能进行了表征。

Analysis of Process for the Coupling Reaction of Trioxane and Methyl Formate with Acid Catalyst;

酸催化三聚甲醛与甲酸甲酯偶联反应过程的分析

Synthesis of methyl glycolate by coupling methyl formate with trioxane Ⅲ.Exploration of carbonyl reaction mechanism;

甲酸甲酯与三聚甲醛合成乙醇酸甲酯 Ⅲ.羰化反应机理的初步探索

Synthesis of methyl glycolate by coupling of methyl formate with trioxane I. Study of optimum reaction conditions with sulphuric acid as catalyst;

甲酸甲酯与三聚甲醛偶联合成乙醇酸甲酯 Ⅰ.硫酸催化反应条件优选

The thermoregulated PEG(polyethylene glycol)biphasic catalytic system,which has a characteristic of “being homogeneous at high temperature and biphasic at room temperature”,was applied for the hydroformylation of tripropene catalyzed by Rh(acac)(CO)2/TMPGP(TMPGP:P[O(CH2CH2O)nCH3]3,n=8).

将具有“高温混溶、室温分相”特征的温控PEG(聚乙二醇)两相催化体系用于三聚丙烯氢甲酰化反应。

Based on the critical solution temperature (CST) of non-ionic phosphine ligand, a thermoregulated phase-separable catalyst formed in-situ from P[p-C 6H 4O(CH 2CH 2O) nH] 3 (PETPP) and RhCl 3·3H 2O were applied for the first time in hydroformylation of tripropene (TP).

首次将温控相分离催化概念应用于三聚丙烯氢甲酰化反应中 。

One, two and three carboxyl terminal groups were introduced into star-shaped oligofluo- renes, respectively; and more planar core structure truxene with 1,3,5-triazine-2,4-diamine end-groups was also designed and synthesized for systematic research and comparison.

包括端基上分别带有1,2和3个羧酸基团的星状芴分子,以及结构更为刚性的3个端基均为2,4-二胺基三嗪环的三聚茚分子,以此形成一个系列的分子结构,便于进行系统性研究。