丁二酸的

Effect of ratio of dimethylol propionic acid to polybutylene adipate glycol on Tg and basic properties of films was studied.

考察了二羟甲基丙酸/聚己二酸丁二醇酯二醇比例对Tg以及膜基本性能的影响。

The studies segmented polyester polyurethaneurea elastomers based on 4,4'-diphenylmethane diisocyanate, ethylene diamine and polybutylene adipate (M. W. 1975 and M. W. 1228) were studied by means of IR spectrascopy.

用红外光谱法对基於4，4'-二苯基甲烷二异氰酸酯、乙二胺和聚己二酸丁二醇酯（分子量分别为1975和1228）的嵌段聚脲氨酯弹性体进行了研究。

In their structures, polyanions are bridged by Ln ions via the coordination of the bridging oxygen atoms and terminal oxygen atoms, forming a W–Ot′–Ln–Ob–W linkage; and through the W–Ot′–Ln–Ob–W linkage a one-dimension infinite linear chain with alternating cations and anions is formed.

在相似的合成条件下，我们向原有体系内加入顺丁烯二酸作为有机配体，合成了化合物7，其7的基本结构和化合物1-6很相似，但有一个顺丁烯二酸阴离子取代了一个NO3-离子的位置。

Utilization ofantiseptic would not be affected by temperature or pH.The antiseptics had a longperiod of validity,the effect is much better than most other antiseptics,could notarose skin hypersusceptibility,resist to metabolization,and had a wide utilizationrange.

研究中采用了本实验室自行合成的抗菌剂反丁烯二酸桂醇甲酯，测定了反丁烯二酸桂醇甲酯在不同的pH值、不同温度、不同浓度条件下的抑菌活性、抑菌谱，并与其它常用抗菌剂的抑菌效果做了比较。

Given the known reaction mechanism and general chemical considerations, we propose that nicotine, when used as the carbon source by P. putida J5, is catabolized to pyruvic acid via pyrrolidine pathway and then participates in the synthesis of vitamin pantothenate and CoA, which supply the energy for the normal functioning.

通过对突变位点基因的功能分析推测，假单胞杆菌可以将尼古丁代谢为2，5-二羟基吡啶，而2，5-二羟基吡啶可以进一步转化为丁烯二酸和丙酮酸，进而参与了泛酸和 CoA 的合成，为生理代谢提供基质。

A series of segmented thermally stimulated shape-memory polyurethanes, which consist of polyethylene adipate glycolas the soft segment and 4,4'-diphenylmethane diisocyanate-1,4-butanediol-DPA(which consists of ring components) as the hard segment were synthesized by one-step polymerization.

以聚己二酸乙二醇酯二醇为软段、4，4' -二苯基甲烷二异氰酸酯 1，4 丁二醇含环状结构的扩链剂DPA为硬段，采用一步聚合法制备了一种具有热致形状记忆功能的多嵌段聚氨酯弹性体。

On the basis of above works, dibutyl sebacate and 1、2-cyclohexanedicarboxylic acid diisobutyl ester were chosen to be absorbents of MA according to the solubility and property of solvents.

第二：在前一部分工作基础上，考虑了溶解度测定结果和溶剂本身性质选择有机溶剂癸二酸二丁酯和溶剂六氢化邻苯二甲酸二异丁酯作为吸收顺酐的吸收剂。

The density, binding energy and radical distribution function of HTPB/plasticizers blends and binder hydroxyl-terminated polybutadiene, and plasticizer dioctyl sebacate, dioctyl adipate, dibutyl phthalate, dioctylphthalate were calculated by molecular dynamics simulation for evaluating compatibility of HTPB and plasticizers.

为评价端羟基聚丁二烯与增塑剂相容性的优劣，采用分子动力学模拟方法对纯HTPB、增塑剂癸二酸二辛酯、己二酸二辛酯、邻苯二甲酸二丁酯、邻苯二甲酸二辛酯及HTPB与增塑剂组成的共混物的密度、结合能和径向分布函数等进行了计算。

Two types of haptens, the earboxylated propyl amino derivative of the acid moiety (HCA1) that is the hydrolyzed product of cyhalothrin, and the carboxylated ethyl carbonyl derivative of the alcohol moiety (HCB2) were synthesized, and conjugated with the carrier proteins bovine serum albumin and ovalbumin respectively by the active ester method and the mixed anhydride method. The polyclonal antibodies were obtained after immuning to the New Zealand rabbits.

通过对氯氟氰菊酯分子结构中的酸部分接4-氨基丁酸(HCA1)和醇部分接丁二酸酐(HCB2)，合成两种不同的半抗原，并通过碳二亚胺法将HCA1和HCB2分别与牛血清蛋白偶联制备了人工抗原HCA1-BSA和HCB2-BSA，通过活泼酯法将HCA1、HCAS和HCB2分别与卵清蛋白偶联制备包被抗原，两种人工抗原通过免疫新西兰大白兔来制备相应的多克隆抗体。

Disclosed is a method to prepare 3, 3-dimethyl butyric acid chloride, relating to an organically synthesized intermediated compound and particularly relating to a method to prepare 3, 3-dimethyl butyric acid chloride from 3,3-dimethyl butyric acid and phosphorus trichloride.

3，3-二甲基丁酰氯的制备方法，涉及一种有机合成中间体，尤其是涉及一种由3，3-二甲基丁酸与三氯化磷反应制备3，3-二甲基丁酰氯的方法。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。