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    Method for the production of defined mixtures of thf, bdo and gbl by gas phase hydrogenation
    15.
    发明申请
    Method for the production of defined mixtures of thf, bdo and gbl by gas phase hydrogenation 失效

    公开(公告)号：US20070135650A1

    公开(公告)日：2007-06-14

    申请号：US10581074

    申请日：2004-12-04

    申请人： Markus Rosch ,  Rolf Pinkos ,  Michael Hesse ,  Stephan Schlitter ,  Henrik Junicke ,  Olga Schubert ,  Alexander Weck ,  Gunther Windecker

    发明人： Markus Rosch ,  Rolf Pinkos ,  Michael Hesse ,  Stephan Schlitter ,  Henrik Junicke ,  Olga Schubert ,  Alexander Weck ,  Gunther Windecker

    IPC分类号： C07D307/02

    CPC分类号： C07D307/33 ,  C07D307/08

    摘要： The present invention provides a process for variably preparing mixtures of optionally alkyl-substituted BDO, GBL and THF by two-stage hydrogenation in the gas phase of C4 dicarboxylic acids and/or derivatives thereof, which comprises a) in a first step in the gas phase, hydrogenating a gas stream of C4 dicarboxylic acids and/or derivatives thereof over a catalyst at a pressure of from 2 to 100 bar and a temperature of from 200° C. to 300° C. in a first reactor in the presence of a catalyst in the form of shaped catalyst bodies having a volume of less than 20 mm3, said catalyst from 5 to 95% by weight of oxide of copper and from 5 to 95% by weight of an oxide having acidic sites, to give a stream mainly containing of optionally alkyl-substituted GBL and THF, b) removing any succinic anhydride formed by partial condensation, c) converting the products remaining predominantly in the gas phase in the partial condensation, THF, water and GBL, under the same pressure or under a pressure reduced by the pressure drops in the hydrogenation circuit and at a temperature of from 150 to 240° C., in a second reactor over a catalyst which ≦95% by weight of CuO and from 5 to 95% by weight of one or more oxides selected from the group of ZnO, Al2O3, SiO2, TiO2, ZrO2, CeO2, MgO, CaO, SrO, BaO, La2O3 and Mn2O3 to give a stream comprising a mixture of BDO, GBL and THF, d) removing the hydrogen from the products and recycling it into the hydrogenation, e) distillatively separating the products, THF, BDO, GBL and water, if appropriate recycling a GBL-rich stream into the second reactor or if appropriate discharging it, and working up BDO, THF and GBL distillatively, and setting the ratio of the products, THF, GBL and BDO, relative to one another within the range from 10 to 100% by weight of THF, from 0 to 90% by weight of GBL and from 0 to 90% by weight of BDO only by varying the temperatures in the two hydrogenation zones and also if appropriate the GBL recycle stream.

    Method for changing the predefined mean molecular weight Mn during the continuous production of polytetrahydrofuranes or THF copolymers
    18.
    发明授权
    Method for changing the predefined mean molecular weight Mn during the continuous production of polytetrahydrofuranes or THF copolymers 有权
    在连续生产聚四氢呋喃或THF共聚物期间改变预定平均分子量Mn的方法

    公开(公告)号：US08138283B2

    公开(公告)日：2012-03-20

    申请号：US12295152

    申请日：2007-12-10

    申请人： Rolf Pinkos ,  Jochen Steiner ,  Stefan Käshammer ,  Tobias Wabnitz

    发明人： Rolf Pinkos ,  Jochen Steiner ,  Stefan Käshammer ,  Tobias Wabnitz

    IPC分类号： C08G65/20 ,  C08G65/46

    CPC分类号： C08G65/20 ,  C08G65/2657 ,  C08G65/266 ,  C08G65/2696

    摘要： The present invention provides a process for changing the given mean molecular weight Mn in the continuous preparation of polytetrahydrofuran or tetrahydrofuran copolymers, the mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of a telogen and/or of a comonomer over an acidic catalyst, wherein a) the molar ratio of telogen to tetrahydrofuran or to tetrahydrofuran and comonomer is changed, b) then the mean molecular weight of at least one sample is determined, c) until the mean molecular weight thus determined differs from the molecular weight to be achieved by the change, the already formed polytetrahydrofuran or the tetrahydrofuran copolymers, the mono- or diesters of polytetrahydrofuran or tetrahydrofuran copolymer is at least partly depolymerized over an acidic catalyst and d) the tetrahydrofuran recovered by depolymerization is recycled at least partly into the polymerization.

    摘要翻译： 本发明提供了在四氢呋喃或四氢呋喃共聚物的连续制备中改变给定的平均分子量Mn的方法，所述共聚单体是四氢呋喃或四氢呋喃共聚物的单酯或二酯，其在四环缩聚物和/或共聚单体存在下聚合四氢呋喃 在酸性催化剂上，其中a）季戊四醇与四氢呋喃或四氢呋喃和共聚单体的摩尔比改变，b）确定至少一种样品的平均分子量，c）直到如此确定的平均分子量与 通过改变实现的分子量，已经形成的聚四氢呋喃或四氢呋喃共聚物，聚四氢呋喃或四氢呋喃共聚物的单酯或二酯在酸性催化剂上至少部分解聚，以及d）通过解聚回收的四氢呋喃至少部分地再循环 进入聚合。

    METHOD FOR CHANGING THE PREDEFINED MEAN MOLECULAR WEIGHT MN DURING THE CONTINUOUS PRODUCTION OF POLYTETRAHYDROFURANES OR THE COPOLYMERS
    19.
    发明申请
    METHOD FOR CHANGING THE PREDEFINED MEAN MOLECULAR WEIGHT MN DURING THE CONTINUOUS PRODUCTION OF POLYTETRAHYDROFURANES OR THE COPOLYMERS 有权
    在连续生产聚四氢呋喃或共聚物期间改变预测的均分子量MN的方法

    公开(公告)号：US20100240864A1

    公开(公告)日：2010-09-23

    申请号：US12295152

    申请日：2007-12-10

    申请人： Rolf Pinkos ,  Jochen Steiner ,  Stefan Käshammer ,  Tobias Wabnitz

    发明人： Rolf Pinkos ,  Jochen Steiner ,  Stefan Käshammer ,  Tobias Wabnitz

    IPC分类号： C08G65/20

    CPC分类号： C08G65/20 ,  C08G65/2657 ,  C08G65/266 ,  C08G65/2696

    摘要： The present invention provides a process for changing the given mean molecular weight Mn in the continuous preparation of polytetrahydrofuran or tetrahydrofuran copolymers, the mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of a telogen and/or of a comonomer over an acidic catalyst, wherein a) the molar ratio of telogen to tetrahydrofuran or to tetrahydrofuran and comonomer is changed, b) then the mean molecular weight of at least one sample is determined, c) until the mean molecular weight thus determined differs from the molecular weight to be achieved by the change, the already formed polytetrahydrofuran or the tetrahydrofuran copolymers, the mono- or diesters of polytetrahydrofuran or tetrahydrofuran copolymer is at least partly depolymerized over an acidic catalyst and d) the tetrahydrofuran recovered by depolymerization is recycled at least partly into the polymerization.

    摘要翻译： 本发明提供了在四氢呋喃或四氢呋喃共聚物的连续制备中改变给定的平均分子量Mn的方法，所述共聚单体是四氢呋喃或四氢呋喃共聚物的单酯或二酯，其在四环缩聚物和/或共聚单体存在下聚合四氢呋喃 在酸性催化剂上，其中a）季戊四醇与四氢呋喃或四氢呋喃和共聚单体的摩尔比改变，b）确定至少一种样品的平均分子量，c）直到如此确定的平均分子量与 通过改变实现的分子量，已经形成的聚四氢呋喃或四氢呋喃共聚物，聚四氢呋喃或四氢呋喃共聚物的单酯或二酯在酸性催化剂上至少部分解聚，以及d）通过解聚回收的四氢呋喃至少部分地再循环 进入聚合。

    APPARATUS FOR SEPARATION BY DISTILLATION
    20.
    发明申请
    APPARATUS FOR SEPARATION BY DISTILLATION 审中-公开
    通过蒸馏分离的装置

    公开(公告)号：US20110224401A1

    公开(公告)日：2011-09-15

    申请号：US13131790

    申请日：2009-11-29

    申请人： Stefan Käshammer ,  Rolf Pinkos ,  Tobias Wabnitz ,  Rolf-Hartmuth Fischer

    发明人： Stefan Käshammer ,  Rolf Pinkos ,  Tobias Wabnitz ,  Rolf-Hartmuth Fischer

    IPC分类号： B01D3/14 ,  C08G65/20 ,  C08G63/00

    CPC分类号： B01D1/065 ,  B01D1/22 ,  B01D3/06 ,  C08G65/20 ,  C08G65/30

    摘要： The invention relates to an apparatus for separating a liquid substance mixture by distillation, a method for producing a tetrahydrofuran homopolymer and copolymer in which the oligomers in a liquid starting mixture containing oligomers are separated by distillation in such an apparatus, tetrahydrofuran homopolymers and copolymers which can be obtained using said method and have a narrow distribution of the relative molar mass, and the use thereof.

    摘要翻译： 本发明涉及一种通过蒸馏分离液体物质混合物的装置，四氢呋喃均聚物和共聚物的制备方法，其中含有低聚物的液体起始混合物中的低聚物在这种装置中通过蒸馏分离，四氢呋喃均聚物和共聚物可以 使用所述方法获得并且具有相对摩尔质量的窄分布及其用途。