以异丙醇为溶剂,柠檬酸、十二烷基二甲基叔胺和环氧氯丙烷为原料合成了柠檬酸三酯三联季铵盐阳离子表面活性剂(CTTTA)。在反应温度85℃,反应时间12 h 条件下,产物的收率大于90%,纯度97.58%,Krafft 点<0℃。用表面张力法、稳态荧光探...以异丙醇为溶剂,柠檬酸、十二烷基二甲基叔胺和环氧氯丙烷为原料合成了柠檬酸三酯三联季铵盐阳离子表面活性剂(CTTTA)。在反应温度85℃,反应时间12 h 条件下,产物的收率大于90%,纯度97.58%,Krafft 点<0℃。用表面张力法、稳态荧光探针法和电导法在25℃测定的产物临界胶束浓度(cmc)值分别为3.3×10^(-4),3.4×10^(-4)和3.5×10^(-4)mol/L。CTTTA 与传统阳离子表面活性剂相比,有较高的表面活性。展开更多
The novel type tetramethinmerocyanine red sensitive dyes with benzopyran nucleus on the bridged chain is synthesized by alkaline heterocyclic compound,3-carboxylmethyl rodanine,and chromone.The visible absorption spec...The novel type tetramethinmerocyanine red sensitive dyes with benzopyran nucleus on the bridged chain is synthesized by alkaline heterocyclic compound,3-carboxylmethyl rodanine,and chromone.The visible absorption spectra in methanol and the sensitizing spectra in AgBr-AgI emulsion are determined.Among those dyes,the sensitizing dye used for laser image film is selected.The result shows that the photographic sensitivity is high and photographic properties are stable,especially the residual color is very little after processing.展开更多
文摘以异丙醇为溶剂,柠檬酸、十二烷基二甲基叔胺和环氧氯丙烷为原料合成了柠檬酸三酯三联季铵盐阳离子表面活性剂(CTTTA)。在反应温度85℃,反应时间12 h 条件下,产物的收率大于90%,纯度97.58%,Krafft 点<0℃。用表面张力法、稳态荧光探针法和电导法在25℃测定的产物临界胶束浓度(cmc)值分别为3.3×10^(-4),3.4×10^(-4)和3.5×10^(-4)mol/L。CTTTA 与传统阳离子表面活性剂相比,有较高的表面活性。
文摘The novel type tetramethinmerocyanine red sensitive dyes with benzopyran nucleus on the bridged chain is synthesized by alkaline heterocyclic compound,3-carboxylmethyl rodanine,and chromone.The visible absorption spectra in methanol and the sensitizing spectra in AgBr-AgI emulsion are determined.Among those dyes,the sensitizing dye used for laser image film is selected.The result shows that the photographic sensitivity is high and photographic properties are stable,especially the residual color is very little after processing.