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- The deblocking studies of blocked isocyanates reveal that the aromatic isocyanates undergo deblocking easily compared to aliphatic isocyanates. 对封闭异氰酸酯的反块效应的研究表明,芳香异氰酸酯进行反块容易脂肪族异氰酸酯相比。
- A series of aromatic isocyanates were synthesized by adding dropwise corresponding arylamines into the solution of bis(trichloromethyl) carbonate (BTC) and refluxing. 将伯芳胺或其溶液滴加到双(三氯甲基)碳酸酯溶液中,经回流反应合成了相应的芳基异氰酸酯。
- The blocking reaction of N-methylaniline with aromatic isocyanates and aromatic polyisocyanates occur faster when compared to the aliphatic isocyanates. 对N封闭反应与芳香族异氰酸酯和芳香族聚异氰酸酯甲基苯胺发生得更快相比,脂肪族异氰酸酯。
- From the areas of the selection of raw materials,UV shield and coupling agent,the characteristics of aromatic isocyanates type WPU coatings using in PVC gloves were discussed. 简述了国内PVC手套用水性聚氨酯(WPU)涂饰剂的现状,重点从原料的选择、紫外光屏蔽剂和偶联剂等几方面讨论了自制PVC手套用芳香族异氰酸酯WPU涂饰剂的特点。
- Aqueous PUA dispersion based on aromatic isocyanate was prepared with blocked prepolymer.The blocking agent with enol keto stucture( BAEK) .diethyl malonate( DEM) , was used to prepare the dispersion. 采用具有烯醇结构的封端剂,用反应活性较高的芳香族异氰酸酯制备了聚氨酯-丙烯酸酯(PUA)水分散液。
- The results show that amine content increases with ageing time and polyurethanes based on aromatic isocyanate has much better ageing resistance than ones based on aliphatic isocyanate. 芳香族异氰酸酯制成的聚氨酯比脂肪族异氰酸酯的耐老化性能好得多。
- Test Method for Polyurethane Raw Materials: Determination of Acidity in Moderate to High Acidity Aromatic Isocyanates 聚氨酯原材料的试验方法:中等酸度至高酸度芳香异氰酸酯酸度的测定
- Test Method for Polyurethane Raw Materials: Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates 聚氨酯原料测试方法通过银盐定量测定芳香异氰酸酯单体中的可水解氯测试酸度
- The drink was mixed with aromatic spices. 饮料中带有香料。
- Standard Test Method for Polyurethane Raw Materials Determination of Acidity in Low-Acidity Aromatic Isocyanates and Polyurethane Prepolymers 聚氨酯原料的标准试验方法:低酸度芳香异氰酸酯和聚氨酯预聚物中酸度测定
- Standard Test Method for Polyurethane Raw Materials: Acidity by Argentometric Determination of Hydrolyzable Chlorine in Monomeric, Aromatic Isocyanates 单体芳香异氰酸酯中水解氯银量滴定法测定聚氨酯原料酸度的标准试验方法
- Aromatic herbs are often used in cooking. 芳草常用於烹调。
- Standard Test Method for Polyurethane Raw Materials: Determination of Acidity in Moderate to High Acidity Aromatic Isocyanates 聚氨酯原材料的标准试验方法:中酸度至高酸度芳香异氰酸酯酸度的测定
- aromatic isocyanates 芳香族异氰酸酯
- It has an agreeable aromatic smell. 它有一种好闻的香味。
- The hard, aromatic seed of this tree, used as a spice when grated or ground. 肉豆蔻种子这种树硬而带香味的种子,磨碎或碾碎后作香料用
- I was fascinated by the aromatic smell of roses. 我被玫瑰的香气陶醉了。
- Old World genus of frequently aromatic herbs. 一般芬芳的草本旧大陆的属。
- Test Method for Polyurethane Raw Materials: Determination of the Isocyanate Content of Aromatic Isocyanates 聚氨酯原材料的试验方法:芳香族异氰酸酯中异氰酸酯含量的测定
- They are often synthesized from isocyanates or substituted ureas. 其合成方法主要有异氰酸酯法和取代脲法等方法。