吡咯烷

Antiphase evaporation transonic method and high speed agitation method was adopt to prepare semustine PVP magnetic liposome.

加入聚乙烯吡咯烷酮作为磁性粒子包裹剂制备水基磁流体，采用反相蒸发超声法加高速搅拌制备司莫司汀聚乙烯吡咯烷酮磁性脂质体。

Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

本文首先对线性溶剂化能关系进行了分析介绍，也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤，并将这些参数用于萃取精馏萃取剂的选择与优化；也通过线性溶剂化能关系式建立无限稀释活度系数预测模型，取得了一定的预测精度；将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究，通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂，测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据，并进行关联计算；以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究，取得大量塔内数据；通过选用合适的热力学模型，采用ASPEN中RadFrac模块对分离过程进行模拟研究，通过实验与模拟相结合，建立了C5分离的新工艺，为将来的工业化打下了坚实的基础。

Thephenomenon did not occur when weak organic acids were added above solutionbecause of the weak base of pyrrolidine ring.

由于〓吡咯烷上的吡咯是弱碱性，与弱的有机酸不能形成盐，故在〓吡咯烷的衍生物中加入有机弱酸，其紫外光谱不发生兰移，这一点与我们的实验结果是一致的。

For further studied on nano-Ni catalytic hydrogenation of pyroole and its derivatives at normal temperature and pressure, we have did relevant catalytic hydrogenation experiments to pyrrole, pyrrolidine and pyrrolidone.

为进一步研究常温常压下吡咯及其衍生物的镍催化加氢反应，我们对试剂吡咯、吡咯烷和吡咯烷酮做了相应的催化加氢实验。

N-methy-pyrrolidone is named as NMP for short and nitrogen heterocyclic ring compound.

N-甲基吡咯烷酮，又称N-甲基-2-吡咯烷酮或N-甲基-a-吡咯烷酮，简称NMP，属于氮杂环化合物。

Puyang City, Henan Province The largest professional pyrrolidone series products suppliers --- Puyang Guangming Chemical Co., Ltd., the company now has 12,000 tons / annual production capacity of -butyrolactone, 8000 tons N-methyl pyrrolidone and 2,000 tons of N-ethyl pyrrolidone joint installations, with domestic leading production scale and technology, product quality to meet international standards for similar products, product purity, moisture better than the imports of similar products, is currently the cutting edge of technology, quality, optimal , the lowest cost, the largest N-methyl pyrrolidone and N-ethyl pyrrolidone high-tech enterprises.

河南省濮阳市最大的专业吡咯烷酮系列产品供应商－－－濮阳市光明化工有限公司，公司现拥有12000吨/年产γ-丁内酯、8000吨N-甲基吡咯烷酮和2000吨N-乙基吡咯烷酮的联合装置，具有国内领先的生产规模和技术，产品质量达到国际同类产品标准，产品纯度、水分优于进口同类产品，是目前国内技术前沿、质量最优、成本最低、规模最大的N-甲基吡咯烷酮和N-乙基吡咯烷酮高新技术企业。

The tablets is made from PVPk30, PVPP, MCC, corrigent and other excipients

本制剂处方中采用了聚乙烯吡咯烷酮（PVPk30）、交联聚乙烯吡咯烷酮、微晶纤维素和矫味剂，另加以部分其他辅料。

About 70 years ago, towards the end of 1938 and at the start of 1939 to be exact, the chemist Walter Reppe, working in a BASF laboratory in Ludwigshafen, used acetylene and pyrrolidone to produce a new monomer called vinylpyrrolidone, which in turn can be transformed into the polymer polyvinylpyrrolidone.

大约70年前，对1938年底和1939年开始的，确切地说，是化学家沃尔特雷佩，在路德维希港的巴斯夫在实验室使用的乙炔和吡咯烷酮产生新的单体，工作称为乙烯基，这反过来又可以转化为聚合物聚乙烯吡咯烷酮。

The sequence of effects of these three dispersants on the stability of ITO suspension is PVP＞β-alanine＞triammonium citrate, which is in agreement with the sequence of their acidity and alkalinity in the suspension.

结果表明：3种分散剂分散机制均为静电和空间位阻稳定作用；在相对ITO粉体质量比为5%、最佳球磨分散时间为48 h时，在15 d内ITO浆料的RSH可维持在10%以内；3种分散剂对ITO浆料稳定性的影响由强至弱的顺序为：聚乙烯吡咯烷酮＞β-丙氨酸＞柠檬酸三铵，与其在溶液中酸碱性强弱顺序一致，其中聚乙烯吡咯烷酮的分散效果最好。

Thermal reaction of N-methyl-2-pyrrolidinone and carbon disulfide (CS2) under elevated pressure leads to the formation of N-methylprrolidine-2-thione.

N-甲基吡咯烷酮和二硫化碳(CS2)在加压下发生热反应生成N-甲基吡咯烷-2-硫酮。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。