The heterocyclic compounds containing isothiazole were synthesized by reacting of 3,5-dichloro-4-cyano isothiazole with corres corresponding phenol.All the compoundes were characterized by elemental analysis? 1HNMR an...The heterocyclic compounds containing isothiazole were synthesized by reacting of 3,5-dichloro-4-cyano isothiazole with corres corresponding phenol.All the compoundes were characterized by elemental analysis? 1HNMR and IR spectrometry.The preliminary bioassay showed almost all of the compounds possessed selectivity herbicidal and better fungicidal activities.展开更多
采用Yamazaki聚合体系,以9,9-二[4-(4-羧基苯氧基)苯基]呫吨(BCPX)为第三单体,将其与对苯二甲酸(PTA)、对苯二胺(PPD)进行共缩聚反应,合成了一系列含呫吨结构的聚酰胺共聚物.研究了单体摩尔浓度、反应温度、BCPX和PTA摩尔比等对共聚反...采用Yamazaki聚合体系,以9,9-二[4-(4-羧基苯氧基)苯基]呫吨(BCPX)为第三单体,将其与对苯二甲酸(PTA)、对苯二胺(PPD)进行共缩聚反应,合成了一系列含呫吨结构的聚酰胺共聚物.研究了单体摩尔浓度、反应温度、BCPX和PTA摩尔比等对共聚反应的影响,并用IR、DSC、TGA等方法对共聚物进行了表征.结果表明,新型聚芳酰胺的对数比浓粘度为1.90~2.95 d L·g^(-1),具有较高的玻璃化温度(Tg=297.3~320.5℃),在氮气氛中5%热失重温度为522~540℃,800℃时的残炭率在51%以上.随着单体BCPX和PTA摩尔比的增加,共聚物的Tg逐渐降低,当BCPX和PTA摩尔比大于50/50时,共聚酰胺在常温下可溶于N-甲基-2-吡咯烷酮、N,N-二甲基乙酰胺、吡啶等极性有机溶剂中.展开更多
文摘The heterocyclic compounds containing isothiazole were synthesized by reacting of 3,5-dichloro-4-cyano isothiazole with corres corresponding phenol.All the compoundes were characterized by elemental analysis? 1HNMR and IR spectrometry.The preliminary bioassay showed almost all of the compounds possessed selectivity herbicidal and better fungicidal activities.
文摘采用Yamazaki聚合体系,以9,9-二[4-(4-羧基苯氧基)苯基]呫吨(BCPX)为第三单体,将其与对苯二甲酸(PTA)、对苯二胺(PPD)进行共缩聚反应,合成了一系列含呫吨结构的聚酰胺共聚物.研究了单体摩尔浓度、反应温度、BCPX和PTA摩尔比等对共聚反应的影响,并用IR、DSC、TGA等方法对共聚物进行了表征.结果表明,新型聚芳酰胺的对数比浓粘度为1.90~2.95 d L·g^(-1),具有较高的玻璃化温度(Tg=297.3~320.5℃),在氮气氛中5%热失重温度为522~540℃,800℃时的残炭率在51%以上.随着单体BCPX和PTA摩尔比的增加,共聚物的Tg逐渐降低,当BCPX和PTA摩尔比大于50/50时,共聚酰胺在常温下可溶于N-甲基-2-吡咯烷酮、N,N-二甲基乙酰胺、吡啶等极性有机溶剂中.