具有高效清洗性能的微乳润滑剂MELT的研究

简要介绍一种由基础油、水、表面活性剂、防锈剂、抗氧化剂和缓蚀剂等多种活性物质组成的水溶性微乳润滑剂。试验表明，这种润滑剂具有良好的稳定性，润滑性（PB＝60kg)、抗腐蚀性和特别易清洗性（ΔW=-2～2mg)，其pH值为7.5到9.0，燃点＞450℃，能够取代一般的油基润滑油和进口挥发润滑油应用于空调机散热器的制造及其它相关领域，减少工序、节约能源、保护环境，应用前景广阔。     

壳聚糖化学改性条件的探讨

探讨了如何控制在均相条件下以高脱乙酰度的壳聚糖为主要原料,在乙酸水溶液-乙醇-吡啶介质中实现壳聚糖N位乙酰化反应的问题;制备了脱乙酰度为50%左右,具有良好水溶性的壳聚糖;重点研究了乙酰酐的用量、反应时间、反应温度、溶剂对脱乙酰度的影响.结果表明:乙酰酐用量与壳聚糖的摩尔比在2.0左右,温度为40℃,溶剂为乙醇时产物的脱乙酰度接近50%,反应时间为3小时.     

水溶性C60-脱氢枞胺衍生物的合成及生物活性

以C60-脱氢枞胺吡咯烷衍生物和C60-脱氢枞胺氮烯加成物为原料,通过两种不同的水性化途径分别合成了两种水溶性的C60-脱氢枞胺富勒醇衍生物和两种水溶性的C60-脱氢枞胺甘氨酸衍生物。产物经TEM、FT-IR、ESI-MS、1H NMR和HPLC等分析方法检测确认为目标产物,且为加成度不同的混合物。对合成出的4种水溶性C60-脱氢枞胺衍生物进行了生物活性测试。结果表明,4种水溶性C60-脱氢枞胺衍生物对rTaq DNA聚合酶和HIV-1反转录酶均表现出一定的抑制作用,对卵巢癌细胞株几乎不表现出抑制活性。     

水溶性超支化光敏有机硅聚氨脂丙烯酸酯低聚物的合成

以三羟甲基丙烷(TMP)和N,N-二羟乙基-3-胺基丙酸甲酯为单体,通过“准一步法”合成三代超支化聚胺-酯(HBP-OH),再与羟烷基硅油、异佛尔酮二异氰酸酯(IPDI)、二羟甲基丙酸(DMPA)和丙烯酸-β-羟乙酯(HEA)反应,合成了三代水溶性超支化光敏有机硅聚氨脂丙烯酸酯低聚物(WHBPSUA)。研究了反应温度、DMPA用量等因素对合成反应和产物性能的影响,确定了最佳反应条件,并通过IR、¹H-NMR和GPC对超支化聚胺-酯及低聚物结构进行了表征。结果表明,三代超支化聚胺-酯(HBP-OH)最佳反应温度分别为120、130和135 ℃;DMPA和羟烷基硅油物质的量的比为1∶1时,所合成产物WHBPSUA具有良好的水溶性和成像性。     

Enzyme-Mediated Hydrolysis of Poly（ethylene glycol）-Supported Carbonates

Enzymatic kinetic resolution of racemic alcohols or esters is known as a useful method for the preparation of optically active secondary alcohols. However, the work-up including the separation of the mixture of the remaining substrate and the resulting compound spend a lot of time and waste much amount of solvents. On the other hand, organic synthesis based on polymer supports has made rapid progress. Although the methodology is potentially useful for the easy separation of compounds obtained by the enzymatic reaction, there have been relatively few reports on enzymatic resolutions of using a polymer so far. We have noticed that using a watersoluble polymer could be suitable for enzymatic transformation. Here, we report the first example of an enzyme-mediated enantioseleetive hydrolysis of poly（ethylene glycol）（PEG）-supported substrates with a carbonate moiety to afford optically active compounds, and the method enables us to achieve the easy separation of the products. See Scheme 1.     

Synthesis and Characterization of A Novel Water-soluble Block Copolymer with A Rod-coil Structure

In this paper, a novel water-soluble block copolymer with rod-coil structures was prepared using polyfluorene （PF） as rod segment and polyethylene glycol （PEG） as coil segment in the main chain. A new but simple way of polycondensation （shown in Scheme 1 ） was employed, compared with tedious atom transfer radical polymerization and ionic polymerization approaches.     

Enzyme-Mediated Hydrolysis of Poly(ethylene glycol)-Supported Carbonates

1Introduction Enzymatic kinetic resolution of racemic alcohols or esters is known as a useful method for the preparation of optically active secondary alcohols. However, the work-up including the separation of the mixture of the remaining substrate and the resulting compound spend a lot of time and waste much amount of solvents. On the other hand, organic synthesis based on polymer supports has made rapid progress. Although the methodology is potentially useful for the easy separation of compounds obtained by the enzymatic reaction, there have been relatively few reports on enzymatic resolutions of using a polymer so far. We have noticed that using a watersoluble polymer could be suitable for enzymatic transformation. Here, we report the first example of an enzyme-mediated enantioselective hydrolysis of poly(ethylene glycol)(PEG)-supported substrates with a carbonate moiety to afford optically active compounds, and the method enables us to achieve the easy separation of the products[1]. See Scheme 1.     

水溶性三聚氰胺甲醛树脂的合成及其性质的研究

研究了固体含量大于50％,粘度100秒(B-4杯,25℃),有效使用期6个月以上的三聚氰胺甲醛树脂的合成方法。测定结果表明,该样品与美国ACCOBOND 3900锚固剂比,IR吸收峰基本相同,分子量为247(占78％)、492(占16％)和1.5×10~4(占6％)。该树脂用作防潮玻璃纸的锚固剂,效果很好,热封值为93g/cm我们还合成了三聚氰胺甲醛粉状树脂,可直接用于嘧胺塑料制品的表面罩光,增加光泽度和耐磨性。     

2-（2-甲氧基-4-硝苯基）-3-（4-硝苯基）-5-（2,4-二磺基苯）-2H-四唑单钠盐的合成方法改进

2-（2-甲氧基-4-硝苯基）-3-（4-硝苯基）-5-（2,4-二磺基苯）-2H-四唑单钠盐（6）是用于细胞增殖和细胞毒性试验的CCK-8试剂盒的主要成分,该试剂盒具有操作方便、重复性好,灵敏度高等优点.改进了化合物（6）合成方法,使用N-溴代丁二酰亚胺（NBS）氧化甲臜（5）中间体,路线总收率34.4%.同时,利用高分辨质谱（HRMS）、核磁共振（NMR）、熔点测定、紫外光谱（UV）方法对目标产物（6）进行了结构验证.实验方法具有路线简单、操作安全、原料价廉易得等优点,并且后处理简单,适合工业生产.     

水溶性硫化黑BR染色性能和检验办法

介绍了水溶性硫化黑BR的标准技术指标，从强度和色光检测、分光强度测定等方面阐述了水溶性硫化黑BR染色性能和检验方法。