全氟碘代烷调聚工艺研究

全氟碘代烷(CF3（CF2）nI)是合成氟表面活性剂、疏水疏油织物整理剂和其他含氟精细化学品的重要原料，主要由低级全氟碘代烷和全氟烯烃以调聚法合成，工艺复杂，链长难以控制。国内无全氟碘代烷的生产，严重制约了有机氟精细化学品的发展。本文较为全面地介绍了全氟碘代烷调聚反应的机理、评价指标以及国外调聚工艺的研究现状。     

全氟碘烷合成技术进展与应用前景

全氟碘烷是一类重要的有机氟中间体，是生产含氟表面活性剂、含氟织物整理剂和其他含氟精细化学品的主要原料，含氟表面活性剂和织物整理作为各自领域的精英产品倍受国内外关注，具有极好的市场空间和发展前景，因此全氟碘烷化合物作为基础原料具有良好开发前景。     

全氟碘烷合成技术进展与应用前景

全氟碘烷是一类重要的有机氟中间体，是生产含氟表面活性剂、含氟织物整理剂和其他含氟精细化学品的主要原料，含氟表面活性剂和织物整理作为各自领域的精英产品倍受国内外关注，具有极好的市场空间和发展前景，因此全氟碘烷化合物作为基础原料具有良好开发前景。     

全氟碘烷在织物整理剂中的应用前景看好

全氟碘烷化合的是一类氢原子被氟原子完全取代的单碘代全氟烷化合物。目前，具有商业价值的是碳数在1—12的全氟碘烷，其中8碳含量最为重要，其相应的产品具有极高的表面活性，是生产含氟表面活性剂，织物整理剂的关键中间体。     

全氟碘代烷调聚反应的机理与工艺研究进展

介绍了全氟碘代烷调聚反应的机理,对气相调聚法、催化调聚法和自由基调聚法等全氟碘代烷调聚工艺进行了评价。指出调聚法制备全氟碘代烷的关键主要在以下2个方面:提高反应器单位产出率,降低生产成本;提高终产物的选择性,减少碳10以上的调聚物和其他副产物的生成。建议把反应器分成几个列管式反应单元和精馏塔,分段进行调聚。     

含氟中间体的生产与开发

介绍了2,4-二氯氟苯、2,4-二氟硝基苯、2,4-二氟苯胺、3,5-二氟苯胺、邻氟苯酚、对三氟甲基苯胺、2,3,5,6-四氟苄醇、六氟丙酮、三氟乙酸、全氟碘烷等21种含氟中间体的用途、生产方法和生产厂家。我国含氟中间体的主要生产厂家有阜新特种化学品股份有限公司、江苏暨阳集团、江苏东方化工集团、台州市第二化工厂、浙江鹰鹏化工有限公司等。     

全氟碘烷合成技术进展与应用前景

全氟碘烷是一类重要的有机氟中间体．是生产含氟表面活性剂，含氟织物整理剂和其他含氟精细化学品的主要原料．含氟表面活性剂和织物整理剂作为各自领域的精英产品倍受国内外关注．具有极好的市场空间和发展……     

含氟中间体专利信息

一种氧化还原引发制备全氟烷基碘的调聚方法 本发明涉及一种通式为Rf(CF2CF2)nI的全氟烷基碘的调聚方法,以含氟烯烃为主链物,RfI为调聚剂.     

1，1，2，2-四氢全氟烷基碘合成工艺研究

含氟表面活性剂具有高表面活性、高耐热稳定性及高化学稳定性以及既憎水又憎油的独特性能，目前已广泛应用于化工、机械、纺织、造纸、涂料、玻璃、陶瓷等许多行业。全氟烷基碘化物（CnF2n＋1I，n=1～12）易与乙烯发生加成反应，生成全氟烷基碘乙烯加成物——1，1，2，2-四氢全氟烷基碘．该加成物中碘原子不再与全氟烷基相连，受到全氟烷基的诱导作用减弱，因此1．1，2，2-四氢全氟烷基碘上的碘易发生取代反应，可以转变成相应的醇、硫醇和磺酰氯等各种含氟中间体，故1，1，2，2-四氢全氟烷基碘是制备含氟表面活性剂的重要中间体。在此基础上，可开展大量含氟表面活性剂的研制。其合成路线主要有：（1）在水或水与另一极性溶剂为共溶剂的体系中，以能产生二氧化硫阴离子基的物质为引发剂，以金属的碱或盐为吸酸剂。经全氟碘代烷对乙烯的自由基加成反应而制得。该法反应时间较短．但对设备要求高．反应过程较为复杂。（2）使用金属铜催化剂，在50-200℃．0．01-3MPa下得到目标产物。该法对设备要求高，还需进行催化剂的制备。（3）利用钌／活性炭、铂／活性炭、银／氧化铝等贵金属作为催化剂的方法。该法贵金属价格高，制造成本高。（4）利用偶氮二异丁腈、过氧化苯甲酰等过氧化物作为催化剂的方法。该法工艺简单，引发剂用量少，反应液无需处理可直接进行下一步反应。 本工艺采用了第四条路线．以全氟烷基碘、乙烯为原料，过氧化物为引发剂。经过加成反应一步制得1，1，2，2-四氢全氟烷基碘。     

超临界流体中六氟环氧丙烷的合成研究

六氟环氧丙烷（hexafluoropropylene oxide（HFPO））是一个重要的含氟中间体,是生产六氟丙酮、六氟异丙醇、全氟聚醚和全氟乙烯基醚等的重要原料。     

Efficient Synthesis of 2‐Fluoromethylated Quinolines via Copper‐Catalyzed Alkynylation and Cyclization of Fluorinated Imidoyl Iodides

2‐Fluoromethylated quinolines were synthesized through the reaction of N‐aryl‐fluorinated imidoyl iodides with terminal alkynes in good yields by the catalysis of copper(I) iodide (CuI) alone.     

含氟表面活性剂的创新发展刻不容缓

含氟表面活性剂现有品种由于对人类健康有害,受国际公约限制,即将淘汰,其创新发展刻不容缓。     

含氟表面活性剂的创新发展刻不容缓

含氟表面活性剂现有品种由于对人类健康有害,受国际公约限制,即将淘汰,其创新发展刻不容缓.     

气相催化脱氟化氢制备含氟烯烃催化剂的研究进展

含氟烯烃是一类重要精细化学品,最近几年其制备得到了广泛研究。本文主要介绍了以含氟烷烃为原料经气相催化脱氟化氢制备含氟烯烃的方法。简述了气相催化脱氟化氢法所涉及的反应机理。综述了此法采用的催化剂,主要包括活性炭基催化剂、铬基催化剂和铝基催化剂。活性炭基催化剂制备简单,成本低,但不易再生;铬基催化剂性能优异,但其使用存在引发环境问题的可能;目前铝基催化剂是此法研究的重点,但如何维持较高的活性和选择性,抑制催化剂失活是亟待解决的问题,通过添加合适的助剂有望解决这一问题。     

中国含氟精细化学品的现状和发展对策

对我国含氟精细化学品研究开发和生产现状进行较为全面的剖析,对存在的问题提出一些对策和建议。     

芳香族氟化物的合成方法研究进展

人们对环保的要求越来越高,使得绿色化学成为21世纪化学发展的目标与方向。同时,未来精细化学品的发展趋势必须符合高效、安全和经济的原则。从氟原子的特殊性质出发,简述了芳香族氟化物在医药、农药和染料等领域的突出优点及广泛应用前景。详尽介绍了不同的氟化合成方法：直接氟化法、Balz—Schiemann法、无水氟化氢重氮法、电化学氟化法、卤素交换法、氟代脱硝法、超声波和微波法。针对这些方法,讨论了它们的反应原理,具体分析了各自的优缺点,并提出了对今后芳香族氟化物发展的建议。     

含氟聚氨酯树脂涂料的制备及应用

本文介绍了可溶性的带痉基含氟烯烃的合成及含氟聚氨酯涂料的制备，含氟聚氨酯涂料具有优异的耐候性，保色性及耐热，耐腐蚀，耐化学性，可用于建筑，储罐，船舶和飞机等领域。     

Colloidal and polymer properties difference of fluorinated acrylate latex prepared with different fluorinated monomers

Fluorinated acrylate latex was prepared by copolymerizing fluorinated monomer, butyl acrylate, and methyl methacrylate, which was initiated by potassium persulfate in the water. The resultant fluorinated latex and its film were characterized with contact angle determinator, dynamic light scattering detector, and differential scanning calorimetry, respectively. Influence of type of fluorinated monomers on colloidal and polymer properties of fluorinated acrylate latex was studied. Results show that the coagulation rate, particle size, contact angle, glass transition temperature, and chemical resistance are increased with the increase of the number of fluorine atom in the fluorinated monomer. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

Facile preparation and characterization of novel fluoroalkyl end‐capped oligomer/zinc oxide nanocomposites

BACKGROUND: The aim of the present work was to prepare novel fluoroalkyl end‐capped oligomer/zinc oxide nanocomposites by the use of fluoroalkyl end‐capped oligomers as key intermediates. In addition, it was intended to clarify the unique properties of these fluorinated nanocomposites. RESULTS: A variety of fluoroalkyl end‐capped oligomer/zinc oxide nanocomposites were prepared by the interaction of the corresponding oligomers with zinc oxide particles, which were obtained by the reaction of zinc acetate dihydrate with sodium hydroxide in ethanol solution at room temperature. In contrast, fluoroalkyl end‐capped 2‐methacryolyoxyethanesulfonic acid oligomer was found to afford the corresponding fluorinated amorphous zinc oxide composites under similar conditions. CONCLUSION: These fluorinated zinc oxide composites thus obtained are nanometer size‐controlled very fine particles, and they exhibit a good dispersibility and stability in water and traditional organic media. These fluorinated nanocomposites were also applied for the surface modification of poly(methyl methacrylate) (PMMA) films, which gave not only a good surface‐active property imparted by fluorine but also unique characteristics related to the presence of zinc oxide nanoparticles on the modified PMMA film surface. Copyright © 2008 Society of Chemical Industry     

Probing the Outstanding Local Hydrophobicity Increases in Peptide Sequences Induced by Incorporation of Trifluoromethylated Amino Acids

In order to achieve accurate determination of the local hydrophobicity increases in peptide sequences produced by incorporation of trifluoromethylated amino acids (TfmAAs), the chromatographic hydrophobicity indexes (?₀) of three series of tripeptides containing three unnatural trifluoromethylated amino acids have been measured and compared with those of their non‐fluorinated analogues. The hydrophobic contribution of each fluorinated amino acid was quantified by varying the position and the protection of (R)‐ and (S)‐α‐trifluoromethylalanine (TfmAla), (R)‐trifluoromethylcysteine (TfmCys), and (S)‐trifluoromethionine (TFM) in a short peptide sequence. As a general trend, strong increases in hydrophobicity were precisely measured, even exceeding the high hydrophobic contribution of the natural amino acid isoleucine. This study validates the incorporation of trifluoromethylated amino acids into peptide sequences as a rational strategy for the fine‐tuning of hydrophobic peptide–protein interactions.