[EN] CATALYST FOR THE PREPARATION OF POLYURETHANES<br/>[FR] CATALYSEUR POUR LA PRÉPARATION DE POLYURÉTHANES
申请人:BASF SE
公开号:WO2017085252A1
公开(公告)日:2017-05-26
Object of the invention are novel thermolatent bases and their use as catalysts for the preparation of polyurethanes or epoxy resins as well as a process for the preparation of polyurethanes or epoxy resins in the presence of the catalyst according to the present invention.
A straightforward and general method has been developed for the synthesis of phthalimide derivatives from 2-iodobenzamides and PPh3/I2/HCOOH in the presence of a catalytic amount of Pd(OAc)2. The reaction results demonstrate that PPh3/I2/HCOOH is a facile, efficient and safe CO source. The whole process is carried out in toluene at 80 °C and furnishes the desired products in good to excellent yields
已经开发了一种简单且通用的方法,用于在催化量的Pd(OAc)2存在下由2-碘联苯甲酰胺和PPh 3 / I 2 / HCOOH合成邻苯二甲酰亚胺衍生物。反应结果表明,PPh 3 / I 2 / HCOOH是一种简便,高效,安全的CO源。整个过程在80°C的甲苯中进行,并以优异的产率提供了所需的产品。
Facile Syntheses and Characterization of Hyperbranched Poly(ester−amide)s from Commercially Available Aliphatic Carboxylic Anhydride and Multihydroxyl Primary Amine
作者:Xiuru Li、Jie Zhan、Yuesheng Li
DOI:10.1021/ma049232z
日期:2004.10.1
a series of model reactions. The hyperbranched poly(ester−amide)s with multihydroxyl end groups are prepared by thermal polycondensation of carboxyl anhydrides (AA‘) and multihydroxyl primaryamine (CBx) without any catalyst and solvent. The reaction mechanism in the initial stage of polymerization was investigated with in situ 1H NMR. In the initial stage of the reaction, primary amino groups of 2-amino-2-ethyl-1
在一系列模型反应的基础上,开发了一种由市售的AA'和CB x型单体合成新型超支化聚(酯酰胺)的新方法。具有多羟基端基的超支化聚(酯酰胺)是通过在不使用任何催化剂和溶剂的情况下使羧酸酐(AA')与多羟基伯胺(CB x)热缩聚而制备的。用原位1 H NMR研究了聚合反应初期的反应机理。在反应的初始阶段,2-氨基-2-乙基-1,3-丙二醇(AEPO)或三(羟甲基)氨基甲烷(THAM)的伯氨基与酸酐迅速反应,形成中间体,该中间体可以被认为是一个新的AB x型单体。AB x分子的进一步自缩聚反应产生超支化聚合物。使用1 H和13 C NMR光谱进行的分析表明,所得聚合物的支化度为0.36至0.55。这些超支化的聚(酯酰胺)包含13 C和DEPT 13 C NMR光谱观察到的构型异构体,分子量高,分布宽,显示的玻璃化转变温度(T g s)在7至96°C之间。热重分析测量显示分解温度为10%失重温度(T
The reaction of phthalidylidene dichloride with primary amines. Synthesis and X-ray molecular structure of N-substituted phthalisoimides
作者:Antonio Guirado、Andrés Zapata、M. Carmen Ramírez de Arellano
DOI:10.1016/s0040-4020(97)00194-4
日期:1997.4
efficient method for the synthesis of N-substituted phthalisoimides, by reaction of phthalidylidene dichloride with primaryamines, is described. The reactions with arylamines, arylenediamines and alkylenediamines lead to the corresponding phthalisoimides or bisphthalisoimides in nearly quantitative yields. However, the reactions with alkylamines are not useful because of the relatively high nucleophilicity