羟基聚硅氧烷是有机硅工业的重要产品之一。
The hydroxide polysiloxane is one of the important products of the organic silicon industry.
以二羟基聚二甲基硅氧烷(PDMS)为基体,加入不同填料和助剂,制备了室温硫化硅橡胶涂层。
With hydroxyl group terminated PDMS on both side as feedstock, adding several kinds of fillers and adjuvants, the room-temperature vulcanized silicone rubber coatings are prepared.
采用Z桨捏合机,将端乙烯基硅橡胶、气相法白炭黑及羟基硅氧烷进行混炼,制备了高强度硅橡胶混炼胶。
High strength silicone rubber compounds were prepared using vinyl-terminated silicone rubber, fumed silica and hydroxy siloxane by intensive mixing method in Z blade mixer.
综述了在甾体化合物11 -位引入羟基的各种化学合成方法,主要包括酮基还原法、上脱卤素法、硼烷双氧水法、过氧化-还原法等。
Introduction of 11-hydroxy group into steroids by chemical methods, such as keto-reduction, halogenation-dehalogenation, borane-hydrogen peroxide and peroxidation-reduction are reviewed.
探讨了烷氧基硅烷封端率及端羟基聚丁二烯的含量对单组分密封胶的力学性能、硬度及表干时间的影响。
The effects of different silane end-capped ratios and HTPB content on mechanical properties, hardness and surface dry time of the sealant were discussed.
本文即从这方面着手,开展了固定化脂肪酶催化15—羟基十五烷酸甲酯合成环十五内酯的研究。
So in this research, synthesis of cyclopentadecanolide with Methyl 15-Hydroxy-pentadecanate by immobilized lipase had been studied.
对烷基化壳聚糖进行X射线光电子能谱分析表明,随着卤代烷试剂反应活性的增高,发生在壳聚糖羟基上的烷基取代反应增多。
X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.
采用羟基树脂通过TDI对聚甲基硅氧烷进行化学改性,用红外光谱、热重分析等手段对改性产物进行了表征。
Hydroxyl resin is used to modify polymethylsiloxane through the action of TDI and the products are characterized by IR and TGA.
扩链剂是用来将聚二甲基硅氧烷两端活性较弱的羟基转变为高活性的异氰酸酯基。
The chain extender is used to convert the low-activity hydroxy groups of both ends of the polydimethylsiloxane into high-activity isocyanate groups.
烷氧基- 3,4,5 -三羟基-烷基酰胺的衍生物,它们的制备,包含它们的组合物和用途。
Derivatives of 2-alkoxy-3, 4, 5-trihydroxy-alkyl amides, preparation and use thereof, and compositions containing the same.
支的内毒素工作标准品中除含有3-羟基十四烷酸外,还含有3-羟基十二烷酸,说明其含有非大肠杆菌的细菌。
There was 3-hydroxydodecanoic acid in 20 EU/tube working standard endotoxin, which indicated the presence of impurity of bacterium source.
支的内毒素工作标准品中除含有3-羟基十四烷酸外,还含有3-羟基十二烷酸,说明其含有非大肠杆菌的细菌。
There was 3-hydroxydodecanoic acid in 20 EU/tube working standard endotoxin, which indicated the presence of impurity of bacterium source.
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