查询词典 diphenyl-carbinol

A New type of benzoxzine precursors was systhesized based on methoxy methylene diphenyl ether oligomer.The struture of product was characterized by IR and H-NMR analysis and effects of solvent polarity,temperature on the precursor composition were investigated.

以甲氧基次甲基二苯醚低聚物为基础合成了苯并口恶嗪预聚物，用H－NMR、IR表征了该预聚物的结构，讨论了反应温度、溶剂的极性等因素对合成预聚物的结构和组成的影响。

The industrialized situation, problems and solving ways of heavy alkylbenzene sulfonate and petroleum sulfonate were mainly, such introduced, and the research developments and industrialized prospect of arylalkyl sulfonate, alkylated diphenyl ether sulfonate and fatty alcohol ether sulfonate were discussed at the same time.

介绍了重烷基苯磺酸盐和石油磺酸盐工业化生产的现状、存在的问题以及解决的途径，并探讨了芳基烷基磺酸盐、烷基二苯醚磺酸盐和脂肪醇醚磺酸盐的研究现状与工业化前景。

In this paper, serum thyroid hormones level of the adult rats exposed to decabrominated diphenyl ether（BDE-209） at different doses was determined and the influence of BDE-209 to thyroid hormones was studied preliminarily. The dose dependent relationships between THs and BDE-209 concentrations were studied.

论文建立了十溴联苯醚（BDE-209）暴露剂量的成年大鼠模型，测定了不同暴露剂量的实验动物血清甲状腺激素（Thyroid hormones，THs）水平，初步研究了PBDEs污染物对生物体甲状腺激素的影响。

A water molecular gel can be formed by the aggregation and self- assembly of gelator 4,4-bissteaiylarnide diphenyl ether at very low concentration. The microcosmic morphology, thin fiber-like structure, was observed from atomic force microscope and TEM of the gels.

通过原子力显微镜以及透射电子显微镜对水分子凝胶的微观形态进行了表征，表明凝胶因子可以在水中聚集、自组装成延伸的螺旋缠绕细纤维结构，并且得出了纤维束的平均直径在100nm左右，平均孔径在100nm左右。

Keywords polychlorinated diphenyl ether;density functional theory;position of Cl atom substitu-tion;structural parameter;thermodynamic property;relative stability

多氯联苯醚；密度泛函理论；氯原子取代位置；结构参数；热力学性质；相对稳定性

Dissolve 50.0g of polyethylene glycol in 75ml of diphenyl ether, previously warmed, if necessary, just to melt the crystals, in a 250ml distilling flask.

你的理解好像是必要时加入聚乙二醇和二苯醚后一起加热，而我的理解是必要时加入聚乙醇后用预先加热的二苯醚溶解。

But, at present, the production of a soil displacement agent from heavy alkylbenzene sulfonate and petroleum sulfonate as oil displacement agent, there were still some problems as the instable quality, produce scale. It is necessary to develop a feasible production process of arylalkyl sulfonate, alkylated diphenyl ether sulfonate and fatty alcohol ether sulfonate as they can be used as oil displacement assistant in some special oil reservoir. In which Because their abundant raw material, big changeability of structure, high electrolyte tolerance, especial strong calcium tolerance, fatty alcohol ether sulfonate has huge industrialized value.

指出重烷基苯磺酸盐和石油磺酸盐作为三次采油的主表面活性剂，目前在工业化生产中仍存在一些问题，产品质量不太稳定，需进一步改进生产工艺技术，提高产品质量，扩大生产规模；芳基烷基磺酸盐和烷基二苯醚磺酸盐可作为助表面活性剂用于特殊的油藏条件，有必要尽快开发可行的工业化生产工艺；脂肪醇醚磺酸盐类表面活性剂的原料来源丰富，分子结构可变性强，耐电解质能力强，尤其是耐钙能力强，应用领域广，极具工业化价值。

In the reduction of 1, 6-diphenyl-1, 6-hexanedione catalyzed by the bis-squaryl proline, good enantioselectivities were obtained, the ee values were up to 90%.We also studied the asymmetric borane reduction of prochiral ketone catalyzed by a series of thiazolidine ligands.

本文考察了由L-半胱氨酸衍生的2-位无取代基的以及2-位芳基取代的噻唑烷酸及醇配体在前手性酮的不对称还原反应中的催化性能。

Latest researches in the catalysts for synthesis of carbamate by ammonolysis of dimethyl carbonate;2. Progress in the catalysts for synthesis of carbamates by ammonolysis of dimethyl carbonate;3.4,4′-Methylene diphenyl carbamatewas synthesized by ammonolysis of dimethyl carbonate, a substitute of phosgene, and 4,4′-diaminodiphenyl methane with anhydrous zinc acetate as catalyst.

用碳酸二甲酯代替光气，以4，4′-二氨基二苯基甲烷为原料，在无水醋酸锌催化剂的作用下，经胺解反应合成了4，4′-二苯甲烷二氨基甲酸甲酯；测定了MDC的熔点；采用傅里叶变换红外光谱和氢核磁共振对产品结构进行了表征；考察了反应温度、DMC用量、反应压力、反应时间、催化剂用量对MDC收率的影响。

The cross-coupling reaction of DOPO with halogenated phenols were achieved for the first time, novel phenolic hydroxyl-containing reactive-type DOPO-based flame retardants used in epoxy resins were synthesized; the cross-coupling reactions of 2\'-hydroxybiphenyl-2-ylphosphinic acid or diphenyl phosphine oxide with halogenated phenols were studied according to the above result, new reactive-type flame retardants used in epoxy resins were synthesized.

采用Pd催化的方法首次实现了DOPO与卤代酚的交叉偶联，合成了新型含酚羟基的反应型DOPO基环氧树脂阻燃剂；在此基础上实现了2-(2-羟基苯基)苯基次磷酸和二苯基氧化膦与卤代酚的偶联，合成了新型反应型有机磷环氧树脂阻燃剂。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。