脂肪酸甲酯磺酸盐作为表面活性剂的重要性

根据大量实验研究，可以得出这样的结论，脂肪酸甲酯磺酸盐（ＭＥＳ）是很有的表面活性剂，并具有极好的吸附性能，在硬水和低浓度时，ＭＥＳ仍具有很好的作用同时，它提高了常规线性烷基苯磺酸盐（ＬＡＳ）和伯烷基磺酸盐（ＰＡＳ）作为表面活性剂的去污性能。     

脂肪酸甲酯磺酸盐

脂肪酸甲酯磺酸盐脂肪酸甲酯磺酸盐简称（ＭＥＳ）是以天然动植物油脂为原料制得的脂肪酸系阴离子表面活性剂。它具有良好的去污性、钙皂分散性、乳化性、增溶性和生物降解性，并能改进肥皂的溶解性。ＭＥＳ由于其性能优良，主要用于合成洗衣粉、复合皂粉、复合肥皂；也可...     

油剂及其他助剂

<正>TQ 340.47220145292含胶囊颗粒乳液的纤维处理剂制备方法Lion Corp.;JP2012167389A(2012.9.6)(日)标题纤维处理剂可用于制备水洗后的织物整理,制备方法包括:混合阳离子表面活性剂和非离子表面活性剂制备油相,水相的主要成分是水,将油相和水相混合,制得第一乳液;将第一乳液与0.1~10倍剂量的非离子表面活性剂混合,制得第二乳液;然后,将第二乳液和胶囊颗粒混合,所述胶囊颗粒的芯层包含不溶于水的高分子化合物。例如,将氢化的PastellM182(由油酸甲酯、亚油酸甲酯和硬脂酸甲酯组成的棕榈油脂肪酸甲酯)与硬脂     

AOS生产与应用情况

ＡＯＳ生产与应用情况中国日用化学工业研究所孙明和（太原０３０００１）α烯基磺酸盐（ＡＯＳ）是α烯烃经ＳＯ３磺化制得的一种阴离子表面活性剂。早在６０年代美国就使用石蜡裂解的α烯烃进行ＳＯ３磺化制得ＡＯＳ。美国ＡＯＳ的主要生产厂家是Ｓｔｅｐａｎ...     

牵线搭桥

牵线搭桥烷基多苷（ＡＰＧ）新型天然表面活性剂技术简介ＡＰＧ是国际上８０年代以来致力开发的新型天然表面活性剂，性能全面且优异，能部分或全部代替ＬＡＳ，与ＡＥＳ用于家用、工业及公共设施用的各类粉状或液体洗涤剂。ＡＰＧ４非离子表面活性剂，但因其特殊的结构使...     

关于α—甲酯磺酸盐生产

脂肪酸甲酯磺酸盐（以下简称ＭＥＳ）作为脂肪酸衍生物的表面活性剂在国示上已经实现工业化，在国内尚处于引进开发阶段，本对国内引进国际先进技术和消化吸收，总结了自己的体会。     

脂肪酸系列表面活性剂的研究进展

概括和综述了4大类10余个脂肪酸系列表面活性剂的合成、性能和应用现状，重点评述了烷醇酰胺及其衍生物、乙氧基化脂肪酸甲酯、脂肪酸甲酯磺酸盐、N-酰基ED3A、氨基酸、咪唑啉、甜菜碱、双子表面活性剂等脂肪酸系列表面活性剂的研究进展。此系列表面活性剂易生物降解、安全、多功能和高效能。     

乙氧基化脂肪酸甲酯非离子表面活性剂的制造和性质

环氧乙烷（ＥＯ）不能直接与脂及酸甲酯反应是因为没有活性氢，我们开发一种新的合成方法，直接将ＥＯ加主脂肪酸甲酯（ＲＣＯＯＣＨ３）中，得到（ＲＣＯ（ＯＣＨ２ＣＨ２）ｎＯＣＨ３）这是通用利用金属阳离子活性的新型固体催化剂实现的。通过这种方法获得的脂肪酸甲酯乙氧基化物是均一的单酯类，并具有非离子表面活性剂的良好性质。     

表面活性剂在家用洗涤剂中的应用进展

论述了表面活性剂在家用洗涤剂中的应用现状和发展趋势,分析了直链烷基苯磺酸钠、α-烯基磺酸钠、脂肪醇聚氧乙烯醚硫酸钠、脂肪酸甲酯磺酸钠、脂肪醇聚氧乙烯醚、脂肪酸甲酯乙氧基化物、烷基糖苷等几种重要的表面活性剂的应用和市场情况,阐明了脂肪酸甲酯磺酸钠有望成为新一代有影响力的阴离子表面活性剂。指出家用洗涤剂的发展趋势将是功能化、浓缩化和液体化,表面活性剂将向油脂基和特种表面活性剂发展,其安全性也将倍受关注。建议加强油脂化学工业建设,为油脂基表面活性剂的发展打下坚实基础。     

脂肪酸甲酯磺酸钠

脂肪酸甲酯磺酸钠(MES)是以天然植物油或动物油为原料制成的一种新型表面活性剂，作为LAS的替代品，为理想的钙皂分散剂和洗衣粉活性剂，显示出良好的去污性、钙皂分散性、乳化性、增溶性。磺基脂肪酸甲酯是一种新型阴离子表面活性剂，近来作为表面活性物质在清洗行业倍受关注。其原因包括：钙皂分散性能好；去污力强，特别在硬水和磷酸盐存在下，脂肪酸甲酯都有极佳的去污力；生物降解性能好。     

Reduced Maternal Erythrocyte Long Chain Polyunsaturated Fatty Acids Exist in Early Pregnancy in Preeclampsia

The present prospective study examines proportions of maternal erythrocyte fatty acids across gestation and their association with cord erythrocyte fatty acids in normotensive control (NC) and preeclamptic pregnancies. We hypothesize that maternal fatty acid status in early pregnancy influences fetal fatty acid stores in preeclampsia. 137 NC women and 58 women with preeclampsia were included in this study. Maternal blood was collected at 3 time points during pregnancy (16–20th weeks, 26–30th weeks and at delivery). Cord blood was collected at delivery. Fatty acids were analyzed using gas chromatography. The proportions of maternal erythrocyte α‐linolenic acid, docosahexaenoic acid, nervonic acid, and monounsaturated fatty acids (MUFA) (p < 0.05 for all) were lower while total n‐6 fatty acids were higher (p < 0.05) at 16–20th weeks of gestation in preeclampsia as compared with NC. Cord 18:3n‐3, 22:6n‐3, 24:1n‐9, MUFA, and total n‐3 fatty acids (p < 0.05 for all) were also lower in preeclampsia as compared with NC. A positive association was observed between maternal erythrocyte 22:6n‐3 and 24:1n‐9 at 16–20th weeks with the same fatty acids in cord erythrocytes (p < 0.05 for both) in preeclampsia. Our study for the first time indicates alteration in maternal erythrocyte fatty acids at 16th weeks of gestation which is further reflected in cord erythrocytes at delivery in preeclampsia.     

Preparation and properties of fully esterified erythritol

Pure tetraesters of erythritol with C₁₀, C₁₂, C₁₄, C₁₆, C₁₈ saturated, and C_18:1 unsaturated (oleoyl) fatty acyl chains have been prepared for the first time and characterized using the acylating systems fatty acid/N,N′‐dicyclohexylcarbodiimide/4‐dimethylaminopyridine (DMAP), fatty acid anhydride/DMAP, fatty acyl chloride/pyridine, and fatty acyl chloride/boron trifluoride etherate. For the first three systems the yields were in the range of 80–90% while the fatty acyl chloride/pyridine system has the advantage of lower cost. The fatty acyl chloride/boron trifluoride etherate system gave lower (ca 70%) yields of the tetraesters. The tetraesters of erythritol may have applications analogues to those of triglycerides. In addition, new applications can be envisaged for these compounds, as a result of their differences in physical, chemical, and biochemical properties compared to triglycerides. Practical applications: The tetraesters of erythritol with saturated fatty acyl chains may have applications analogous to those of saturated triglycerides. However, tetraesters with unsaturated fatty acid chains may have greater prospects of having industrial uses after doing chemistry on the carbon–carbon double bonds.     

An Empirical Equation for Estimation of Kinematic Viscosity of Fatty Acid Methyl Esters and Biodiesel

Kinematic viscosity (µ) is an important physical property of fatty acid methyl esters (FAME) and biodiesel. In this work, the Martin's rule of free energy additivity is extended to cover the kinematic viscosity of saturated and unsaturated FAME commonly found in nature. The proposed model can also be extended to estimate kinematic viscosity of biodiesel. The kinematic viscosity of a FAME or a biodiesel can be easily estimated from its carbon number (z), number of double bonds (n_d) at different temperatures (T) without a prior knowledge of the viscosity of individual FAME. Both z_ave and n_d(ave) can be derived from its fatty acid composition. Thus, kinematic viscosity of biodiesel at temperatures between 20 and 100 °C and at atmospheric pressure can be estimated. The average absolute deviation (AAD) estimated at 20–100 °C for saturated, unsaturated FAME, biodiesels and biodiesel blends are 4.15, 3.25, 6.95 and 2.79 %, respectively. The biodiesels collected in this study (191 data points) have the z_ave and n_d(ave) between 14.10 and 17.96 and 0.21–1.54, respectively. The standard deviation was 0.249. The proposed model would be good for estimation of viscosity of biodiesel containing normal fatty acids, generally found in biodiesel feed stocks.     

Synthesis of Biodiesel via Deoxygenation of Stearic Acid over Supported Pd/C Catalyst

High catalytic activity was achieved in the deoxygenation of stearic acid in dodecane in a temperature range of 270–300 °C under 17 bar helium over palladium on nanocomposite carbon Sibunit. Besides n-heptadecane, which was obtained previously in this reaction with palladium on activated carbon, n-pentadecane was also formed in significant amounts.     

脂肪酸三乙醇胺单酯琥珀酸磺酸盐的制备及表面活性

以三乙醇胺、长链脂肪酸为原料,先经酯化、柱色谱提纯得到脂肪酸三乙醇胺单酯(FTME),再经磺化反应合成了4种脂肪酸三乙醇胺单酯琥珀酸酯磺酸盐(FTMS)两性表面活性剂,以月桂酸、棕榈酸、硬脂酸、油酸为脂肪酸合成的FTMS分别命名为FTMS-1、FTMS-2、FTMS-3、FTMS-4,通过FTIR与1HNMR表征了其结构,分别用碱性亚甲基蓝法和酸性溴酚蓝法验证了产物的离子性,并考察了FTMS结构中的烷基链长度及其不饱和度对表面张力、Krafft点、样品液粒径及粒径分布、乳化能力的影响。实验结果表明：产物显示出两性离子的特征;在系列FTMS中,随着脂肪链碳数增加,其Krafft点升高,平均粒径逐渐增大,但脂肪链中的不饱和双键有助于Krafft点的降低和粒径的减小。FTMS-1和FTMS-4具有优异的表面活性,其中FTMS-1的临界胶束质量浓度(CMC)为52.97mg/L,表面张力γCMC为36.1mN/m,其乳化能力（分离时间为148.8s）与AEO-9（分离时间为139.0s）相当且优于十二烷基磺酸钠(分离时间为113.8s)。     

不同碳氮组合对小球藻异养培养油脂积累的影响

目的探讨不同碳氮组合对小球藻Chlorella pro tothecoides CS-41异养培养油脂积累的影响。方法以不同浓度葡萄糖为碳源,尿素为氮源,异养培养小球藻,采用干重法测定小球藻生物量,氯仿/甲醇法提取总脂,并采用GC-MS分析脂肪酸含量。结果小球藻最佳生长条件的碳氮组合配比为葡萄糖浓度40g/L,尿素浓度3g/L,此时小球藻生物量达最高,为9.1g/L,脂肪酸产率最大,为1.26g/L;总脂含量最高,为4.38g/L。结论获得了碳氮最佳配比,使小球藻脂肪酸含量提高到1.26g/L,为发酵扩大化培养小球藻制备生物柴油奠定了基础。