说明:双击或选中下面任意单词,将显示该词的音标、读音、翻译等;选中中文或多个词,将显示翻译。
您的位置:首页 -> 词典 -> 双羟基四配位硅
1)  di-hydroxy tetra coordinated
双羟基四配位硅
1.
Research on di-hydroxy tetra coordinated water-borne polyurethane emulsion and its properties.;
双羟基四配位硅改性水性聚氨酯乳液的制备及其性能
2)  epoxy-tetra-coordinated silicon
环氧基四配位硅
1.
The waterborne polyurethane modified by epoxy-tetra-coordinated silicon was prepared through a two-step process.
通过二步法制备了环氧基四配位硅(ETCS)改性水性聚氨酯,研究了n(—NCO)∶n(—OH)、二羟甲基丙酸(DMPA)的含量、ETCS含量对水性聚氨酯乳液及成膜性能的影响,确定了n(—NCO)∶n(—OH)在1。
3)  tetra-coordinated silicon
四配位硅
1.
Copolymerized emulsion (PUA emulsion) with core-shell structure was prepared with aqueous polyurethane modified by acrylate and this emulsion was further modified by tetra-coordinated silicon monomer based on ethylene.
采用丙烯酸酯对水性聚氨酯进行改性,制备了具有核壳结构的共聚乳液(PUA乳液),并在此基础上引入乙烯基四配位硅单体对PUA乳液进行改性。
4)  caged bicyclic phosphorous quadridentate silicon complex
双环笼状四配位硅
1.
A novel caged bicyclic phosphorous quadridentate silicon complex was synthesized by reaction of 1-oxo-1-phospha-4-chloromethyl-2,6,7-trioxabicyclo[2.
2]-4-氯甲基辛烷反应合成出具有对称结构的双环笼状四配位硅,通过红外光谱、13C和29Si固体核磁共振、质谱等测试手段确定了其结构。
5)  1,3-bis(3-hydroxypropyl)-1,3,3-tetramethyldisiloxane
1,3-双(3-羟丙基)-1,3,3-四甲基二硅氧烷
6)  1,3-bis(4-hydroxybutyl) tetramethyldisiloxane
1,3-双(4-羟丁基)-1,3,3-四甲基二硅氧烷
补充资料:2,2′,5,5′-四羟基-4,4′-双甲苯醌
分子式:
CAS号:

性质:又称2,2′,5,5′-四羟基-4,4′-双甲苯醌。为菌类成分之一。存在于Oospora colorous van Beyma,Chaetomium aureum Chiuers等菌体内。青铜色板状晶体(由丙酮、石油醚重结晶),或橙红色针状晶体(由二噁烷重结晶)。熔点260~275℃(分解)。升华点260℃(常压),155℃(0.1333Pa,部分分解)。不溶于氯仿、苯、石油醚,微溶于水(呈蓝紫色),溶于热甲醇、热乙醇、热醋酸(呈黄红色),易溶于二噁烷。水溶液随酸性变为碱性时由黄经橙、紫变为蓝紫色。水溶液遇三氯化铁变为绿棕色。其浓乙醇溶液遇三氯化铁即产生绿棕色沉淀。将干燥菌体用石油醚萃取,浓缩萃取液,得棕色沉淀,滤取、干燥后,用丙酮在加热下进行萃取,经减压浓缩即得青铜色板状结晶。为抗菌素。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条