N,N -二甲氨基丙烯酸乙酯的合成研究

N,N-二甲氨基乙醇（DMAE）与丙烯酸甲酯（MA）为原料,二月桂酸二丁基锡催化剂品种及用量、反应时间对原料DMAE转化率及产品收率的影响。结果表明,在原料DMAE与MA摩尔比1：3,二月桂酸二丁基锡为催化剂,采用酯交换工艺,对N,N-二甲基氨基丙烯酸乙酯（DMAEA）的合成进行了研究。主要考察了原料摩尔比、催化剂用量占反应物总量3．6％,反应时间6h,反应温度80—120℃反应条件下,原料DMAE转化率99％以上,产品DMAEA收率大于94％,产品纯度大于99％。     

二甲基乙醇胺在高回弹聚氨酯泡沫中的应用

分别采用二甲基乙醇胺(DMEA)和二月桂酸二丁基锡(DBTL) 2种催化剂制备了高回弹聚氨酯(HRPU)泡沫塑料.探讨了DMEA和DBTL对HRPU泡沫组合料反应活性、流动性及制品物理性能、热稳定性的影响.结果表明,以DMEA作催化剂的HRPU泡沫物理性能、热老化性及工艺稳定性优于DBTL催化剂,DMEA可以替代DBTL应用于HRPU泡沫塑料.     

二甲基乙醇胺萃取反应器的模拟

二甲基乙醇胺(DMEA)是一种重要的化工产品,其现有的合成工艺由于存在副反应导致收率较低。本研究将萃取反应技术应用到DMEA反应器中,建立了该反应器的数学模型,通过实验获取了相应的模型参数,并对反应器进行了数值模拟。模拟结果表明,该反应器以萃取促反应,可以有效降低水相中的DMEA浓度,提高产品收率。     

甲基丙烯酸二甲氨基乙酯的制备

介绍了以甲基丙烯酸甲酯 (MMA)与二甲氨基乙醇 (DMAE)为原料 ,铅作催化剂来制备甲基丙烯酸二甲氨基乙酯 (DMA)的方法 ,讨论了不同反应物配比、反应温度与反应压力等条件对反应产率的影响 ,得出了反应的最佳条件。     

Novel new ester quaternaries for improved performance benefits as rinse cycle fabric softeners

A number of new diesterquats and anidoester quats were synthesized and tested for biodegradation and softening. Methyldiethanolamine, 3-methoxylpropylamine, diethanolaminopropylamine, aminoethylethanolamine, dimethylethanolamine, and diethanolamine were reacted, either “as is” or after alkoxylation, with tallow fatty acid and further converted into dialkyl quats. The diesterquat from diethanolisopropanolamine was by far the best of the ester quats synthesized in overall biodegradation, softening, and cost/ease of manufacture. It appears that two ester groups are needed for ready biodegradation as opposed to an amide-ester combination. Increasing unsaturation of the alkyl chains within a molecule increases its rate of biodegradation slightly. This paper was presented at the 89th American oil Chemists' Society Annual Meeting & Expo, Orlando, May 1999.