壬基酚聚氧乙烯（7）醚磷酸酯的合成研究及单,双酯含量的测定

本文合成了壬基酚聚氧乙烯（７）醚磷酸酯（ＮＥＰ－７），研究了合成条件对单、双酯含量的影响，并介绍了一种测量单、双酯含量的新方法。     

国内壬基酚的生产技术及新进展

综述了我国壬基酚的研究开发情况、生产技术及新进展。指出我国壬基酚的生产水平已有了明显的提高。     

Changes in phospholipid bilayers caused by sodium dodecyl sulfate/nonionic surfactant mixtures

The interaction of mixtures of sodium dodecyl sulfate (SDS) and oxyethylenated nonylphenol (30 mol of ethylene oxide) [NP(EO)₃₀] with phosphatidylcholine liposomes was investigated. Permeability alterations were detected as a change in 5(6)-carboxyfluorescein (CF) released from the interior of vesicles, and bilayer solubilization was measured as a decrease in the static light scattered by liposome suspensions. Three parameters were described as the effective surfactant/lipid molar ratios (Re) at which the surfactant system: (i) resulted in 50% CF release (Re _50%CF); (ii) saturated the liposomes (Re _SAT); (iii) led to complete solubilization of these structures (Re _SOL). The corresponding surfactant partition coefficients (K _50%CF, K _SAT, and K _SOL) were determined from these parameters. The free surfactant concentrations S _W were lower than the mixed surfactant critical micellar concentration at subsolubilizing levels, whereas they remained similar to these values during saturation and solubilization of bilayers. Although the Re values increased linearly as the mole fraction of the SDS rose (X _SDS), the K parameters showed maximum values at X _SDS 0.6 for K _50%CF and approximately at X _SDS 0.2 for K _SAT and K _SOL, respectively. Thus, the lower the surfactant contribution in the surfactant/lipid system, the higher the X _SDS at which the maximum bilayer/water partitioning of added mixed surfactant systems occurred. As a consequence, the influence of SDS in this partition appears to be more significant at the sublytic level (monomeric effect), whereas the influence of NP(EO)₃₀ seems to be greater during saturation and solubilization of liposomes via formation of mixed micelles.     

壬基酚聚氧乙烯聚氧丙烯醚合成研究

介绍了NC-2催化剂,在130C、0.3MPa条件下合成出壬基酚聚氧乙烯聚氧丙烯醚。此法操作方便、工艺简单、易于工业化。     

壬基酚衍生的季铵盐阳离子表面活性剂的合成及性能

利用环氧氯丙烷和三乙胺分别与壬基酚、壬基酚聚氧乙烯醚 (n =4)反应 ,合成了 (2 -羟基 -3 -壬苯基 )丙基三乙基氯化铵 (1)和 (2 -羟基 -3 -壬苯基聚氧乙烯基 )丙基三乙基氯化铵 (2 )新型阳离子表面活性剂。化合物 (1)和 (2 )的γcmc 分别为 3 1 2 0mN/m、 3 3 47mN/m ,cmc分别为3 16× 10 -4mol/dm3 和 2 0 3× 10 -4mol/dm3 ,具有良好的絮凝能力。     

提高壬基酚一级品率的关键环节--齐聚工艺的技术改造

通过丙烯齐聚工艺的技术改造，提高了壬烯的质量和收率，从而增加了壬基酚一级品的产量，为装置创造了良好的经济效益。     

两种典型内分泌干扰物的研究现状

从用途、来源、分布、测试方法对两种典型内分泌干扰物双酚A和壬基酚进行了研究,指出了开展内分泌干扰物研究的重要性,并着重对其迁移转化和降解方法进行了阐述.     

壬基酚聚氧乙烯醚硫酸铵的合成与性能

以壬基酚聚氧乙烯醚(NP-4)、氨基磺酸为主要原料,尿素为催化剂,合成了壬基酚聚氧乙烯醚硫酸铵(NPSA),壬基酚聚氧乙烯醚(NP-4)的转化率可达98.39%(质量分数)。对NPSA的表面化学性能、热力学函数、应用性能进行了研究,结果表明:随着温度的升高,NPSA溶液的临界胶束溶度(cmc)逐渐增加,最低表面张力(γcmc)和表面最大吸附量(Γmax)逐渐减小;随着NaCl浓度的增加,cmc和γcmc逐渐减小,Γmax略有增大;40℃、c(NaCl)=0.50mol/L时,cmc和γcmc分别为2.253×10-4 mol/L和24.15mN/m。NPSA的热力学函数表明其形成胶团的过程是个熵驱动过程。NPSA的乳化性、分散力和润湿性都优于十二烷基苯磺酸钠(LAS),增溶能力低于LAS,润湿性与LAS相差不大。     

壬基酚生产工艺条件研究

研究了以苯酚、壬烯为原料 ,酸性阳离子交换树脂为催化剂 ,进行烷基化反应生产壬基酚的工艺条件。最佳反应条件是 :反应温度在催化剂使用初期为 90～ 95℃ ,原料酚烯物质的量比为 (15～ 2 0 )∶1,反应循环比为 (8～ 10 )∶1,反应压力对反应基本没有影响。     

我国壬基酚的生产与发展

介绍了我国壬基酚生产的工艺技术和装置及新进展 ,指出我国壬基酚的生产水平有了明显的提高 ,能够提供颜色浅且稳定的产品 ,并对今后的发展提出了看法和建议