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    MIXTURES OF MONO-, BI- AND NON-FUNCTIONAL FLUORINATED POLYMERS COMPRISING A PLURALITY OF (PER)FLUOROPOLYETHER SEGMENTS
    43.
    发明申请
    MIXTURES OF MONO-, BI- AND NON-FUNCTIONAL FLUORINATED POLYMERS COMPRISING A PLURALITY OF (PER)FLUOROPOLYETHER SEGMENTS 审中-公开

    公开(公告)号：US20170327641A1

    公开(公告)日：2017-11-16

    申请号：US15531092

    申请日：2015-11-23

    申请人： SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    发明人： Claudio Adolfo Pietro TONELLI ,  Ivan WLASSICS ,  Giuseppe MARCHIONNI ,  Letanzio BRAGANTE

    IPC分类号： C08G65/323 ,  C08G65/334 ,  C08L71/02

    摘要： Disclosed are mixtures containing: mono- and bi-functional polymers [polymers (P-A) and (P-B)] comprising a plurality of (per)fluoropolyether segments [segments (SRF)] joined together by hydrogenated (poly)ether segments [segments (SH)], said polymers having two ends, wherein one or both ends comprises a hydroxy or a leaving group; a non-functional polymer comprising a plurality of (per)fluoropolyether segments (S) joined together by hydrogenated (poly)ether segments (SB), with the proviso that the hydrogenated (poly)ether segments (SRF) are not segments of formula —CH2OCH2OCH2—. Disclosed are also monofunctional polymers (P-A) that can be isolated from such mixtures. Methods for the obtainment of the mixtures and for separating the polymers therein contained are also provided, as well as methods of using the mixtures or each polymer therein contained as intermediates or building blocks for the synthesis of other polymers or as ingredients of compositions.

    Method for preparing a composition comprising perfluoropolyether having a carboxyl group at one terminal
    46.
    发明授权
    Method for preparing a composition comprising perfluoropolyether having a carboxyl group at one terminal 有权
    制备包含一端具有羧基的全氟聚醚的组合物的方法

    公开(公告)号：US09217059B2

    公开(公告)日：2015-12-22

    申请号：US14615171

    申请日：2015-02-05

    申请人： Shin-Etsu Chemical Co., Ltd.

    发明人： Yuji Yamane ,  Yasunori Sakano

    IPC分类号： C08C2/04 ,  C08G65/00 ,  C08G65/30 ,  C08G75/02 ,  C08G65/323

    CPC分类号： C08G65/00 ,  C08G65/007 ,  C08G65/30 ,  C08G65/3236 ,  Y02P20/544

    摘要： An object of the present invention is to provide a method for efficiently and highly selectively preparing a composition comprising a perfluoropolyether having a carboxyl group at one terminal at a higher ratio. The present invention provides a method for increasing a ratio of a perfluoropolyether having a carboxyl group at one terminal, relative to a total amount of the perfluoropolyether having a carboxyl group at one terminal and a perfluoropolyether having carboxyl groups at both terminals in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a carboxyl group at one terminal at a higher ratio. Further, present invention provides for increasing a ratio of a perfluoropolyether having a carboxyl group at one terminal, relative to a total amount of the perfluoropolyether having a carboxyl group at one terminal, a perfluoropolyether having carboxyl groups at both terminals and a perfluoropolyether having no carboxyl group at any terminal perfluoropolyether, in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a carboxyl group at one terminal at a higher ratio.

    摘要翻译： 本发明的目的是提供一种高效选择性地制备包含在一个末端具有较高比例的具有羧基的全氟聚醚的组合物的方法。 本发明提供一种提高一端具有羧基的全氟聚醚的比例相对于在一末端具有羧基的全氟聚醚的总量和在两末端具有羧基的全氟聚醚的比例的方法， 全氟聚醚，其中所述方法包括使组合物进行色谱，其中移动相是特定温度和比压的超临界或亚临界状态二氧化碳，并且固定相是硅胶，从而收集含有全氟聚醚的级分 在一个末端具有较高比例的羧基。 此外，本发明提供了增加一端具有羧基的全氟聚醚的比例，相对于一端具有羧基的全氟聚醚的总量，两末端具有羧基的全氟聚醚和不具有羧基的全氟聚醚 在包含这些全氟聚醚的组合物中的任何末端全氟聚醚组，其中该方法包括使组合物进行色谱，其中移动相是特定温度和比压的超临界或亚临界状态二氧化碳，以及固定相 是硅胶，从而在一个末端以更高的比例收集含有具有羧基的全氟聚醚的级分。

    Fluorination in tubular reactor system
    49.
    发明授权
    Fluorination in tubular reactor system 失效
    管式反应器系统中的氟化

    公开(公告)号：US5488142A

    公开(公告)日：1996-01-30

    申请号：US130764

    申请日：1993-10-04

    申请人： David J. Fall ,  Miguel A. Guerra

    发明人： David J. Fall ,  Miguel A. Guerra

    IPC分类号： B01J19/24 ,  C07B39/00 ,  C07C17/10 ,  C07C19/08 ,  C07C23/06 ,  C07C41/22 ,  C07C67/287 ,  C07C303/22 ,  C07C309/80 ,  C08G65/32 ,  C08G65/323 ,  C07C69/63

    CPC分类号： C08G65/3236 ,  B01J19/2435 ,  C07B39/00 ,  C07C17/10 ,  C07C303/22 ,  C07C41/22 ,  C07C67/287

    摘要： Direct fiuorination of organics such as 1,8-dichlorooctane in tubular reactor. Inert liquid containing organic feed is circulated through tubular reactor with fluorine gas for a time and at a temperature sufficient to yield fluorinated organic. Preferably, liquid and gas phases are separated from reactor product stream containing inert liquid, fluorinated organic, and any unreacted organic is recycled to turbulent mixing zone upstream of reactor in which fresh organic feed is added; and fluorine is added to recycle stream at end of mixing zone. Flow in tubular reactor is turbulent. Rate of organic feed and fluorine addition to process are independent of each other. Among process advantages are: Freon solvents not required; good control of reaction exotherm; and HF scavengers not required. Process useful for partial or complete fluorination.

    摘要翻译： 在管式反应器中直接使用有机物如1,8-二氯辛烷。 含有有机原料的惰性液体用氟气在管状反应器中循环一段时间并在足以产生氟化有机物的温度下循环。 优选地，将液相和气相与包含惰性液体，氟化有机物的反应器产物流分离，并且将任何未反应的有机物循环到反应器上游的湍流混合区，其中加入新鲜有机进料; 并且在混合区末端加入氟再循环流。 管式反应器中的流动是紊流的。 有机进料和氟加成速率彼此独立。 工艺优点是：不需要氟利昂溶剂; 良好的反应放热控制; 和HF清除剂不需要。 用于部分或全部氟化的方法。