利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

20 条记录 (耗时 0.019 秒)

    Method for changing the predefined mean molecular weight Mn during the continuous production of polytetrahydrofuranes or THF copolymers
    3.
    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
    4.
    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
    6.
    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。

    PROCESS FOR PREPARING 1,6-HEXANEDIOL
    9.
    发明申请
    PROCESS FOR PREPARING 1,6-HEXANEDIOL 审中-公开

    公开(公告)号：US20110263907A1

    公开(公告)日：2011-10-27

    申请号：US13133006

    申请日：2009-11-30

    申请人： Olivier Abillard ,  Gerd-Dieter Tebben ,  Rolf Pinkos ,  Tobias Wabnitz

    发明人： Olivier Abillard ,  Gerd-Dieter Tebben ,  Rolf Pinkos ,  Tobias Wabnitz

    IPC分类号： C07C31/20

    CPC分类号： C07C67/08 ,  C07C29/149 ,  C07D313/04 ,  C07C31/20 ,  C07C69/675 ,  C07C69/44

    摘要： A process for preparing 1,6-hexanediol from a carboxylic acid mixture which comprises adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols and is obtained as a by-product of the oxidation of cyclohexane to cyclohexanone/cyclohexanol with oxygen or oxygen-comprising gases by water extraction of the reaction mixture, by esterification and hydrogenation to hexanediol, which comprises a) the mono- and dicarboxylic acids present in the aqueous reaction mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) in a second distillation stage, a separation is performed of the bottom product into an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, d) the ester fraction from (c) is catalytically hydrogenated and 1,6-hexanediol is obtained in a manner known per se by distilling the hydrogenation product, e) optionally the bottom product of stage c) is subjected to a further esterification reaction with a low molecular weight alcohol, the low molecular weight alcohol is distillatively removed on completion of the esterification reaction, then adipic diesters and 6-hydroxycaproic esters are substantially separated from 1,4-cyclohexanediols and high boilers in the remaining bottom stream by distillation and said adipic diesters and 6-hydroxycaproic esters are fed to stage c), which comprises performing at least one of the esterification reactions with a catalyst which comprises at least one element of groups 3-14, and adding a monomeric or oligomeric polyol with at least 3 hydroxyl functions after the esterification reaction. After step c) of the process according to the invention, in a third distillation stage, a stream comprising essentially methyl 6-hydroxycaproate can be at least partly removed and heated to temperatures above 200° C. under reduced pressure, which cyclizes 6-hydroxycaproic ester to caprolactone, and pure ε-caprolactone can be obtained from the cyclization product by distillation.

    MIXTURES OF ITACONIC ACID OR ITACONIC ACID DERIVATIVES AND PRIMARY AMINES FOR PRODUCING 1,3- AND 1,4-ALKYL METHYL PYRROLIDONES
    10.
    发明申请
    MIXTURES OF ITACONIC ACID OR ITACONIC ACID DERIVATIVES AND PRIMARY AMINES FOR PRODUCING 1,3- AND 1,4-ALKYL METHYL PYRROLIDONES 有权
    用于生产1,3-和1,4-亚烷基甲基吡咯烷酮的酸或酸性衍生物和主要胺的混合物

    公开(公告)号：US20110251119A1

    公开(公告)日：2011-10-13

    申请号：US13132785

    申请日：2009-11-24

    申请人： Tobias Wabnitz ,  Rolf Pinkos ,  Karl Ott ,  Katja Lamm

    发明人： Tobias Wabnitz ,  Rolf Pinkos ,  Karl Ott ,  Katja Lamm

    IPC分类号： C07D207/267 ,  C11D7/60 ,  C09K15/22 ,  B01F1/00 ,  C09K3/00

    CPC分类号： C07D207/267 ,  B01D53/1456 ,  B01D53/1493 ,  B01D2257/7022 ,  C07C57/13 ,  C09D9/005 ,  C11D3/28 ,  C11D7/3281

    摘要： The present invention relates to a mixture comprising itaconic acid or an itaconic acid derivative and a primary amine of the formula (I) R—NH2  (I) where the molar ratio of primary amine to itaconic acid or the itaconic acid derivative is in the range from 0.5:1 to 20:1, wherein the mixture comprises 50 mole percent or less of 4-carboxypyrrolidones of the formula (II), derivatives of the 4-carboxypyrrolidones of the formula (II) and 4-carbamidopyrrolidones of the formula (III) based on the itaconic acid used or the itaconic acid derivative used and in which R is a linear or branched saturated aliphatic radical having 1 to 24 carbon atoms or a saturated cycloaliphatic radical having 3 to 24 carbon atoms.The invention further provides for the use of the inventive mixtures for preparing 1,3-alkylmethylpyrrolidones and/or 1,4-alkylmethylpyrrolidones, and also a process for preparing 1,3-alkylmethylpyrrolidones and/or 1,4-alkylmethylpyrrolidones.In addition, the present invention relates to mixtures comprising 1,3-alkylmethylpyrrolidones and/or 1,4-alkylmethylpyrrolidones and 1,3-alkylmethylpyrrolidines, where the proportion of 1,3-alkylmethylpyrrolidines is in the range from 10 to 10 000 ppm, and to mixtures comprising 1,3-alkylmethylpyrrolidone and 1,4-alkylmethylpyrrolidone, wherein the molar ratio of 1,3-alkylmethylpyrrolidone to 1,4-alkylmethylpyrrolidone is in the range from 1:1 to 10:1.

    摘要翻译： 本发明涉及包含衣康酸或衣康酸衍生物和伯胺与衣康酸衍生物的摩尔比在式（I）R-NH 2（I）中的伯胺的混合物， 其中所述混合物包含50摩尔％或更少的式（II）的4-羧基吡咯烷酮，式（II）的4-羧基吡咯烷酮的衍生物和式（III）的4-氨基甲酰基吡咯烷酮 ），其中R是具有1至24个碳原子的直链或支链饱和脂族基团或具有3至24个碳原子的饱和脂环族基团。 本发明进一步提供本发明混合物用于制备1,3-烷基甲基吡咯烷酮和/或1,4-烷基甲基吡咯烷酮的用途，以及制备1,3-烷基甲基吡咯烷酮和/或1,4-烷基甲基吡咯烷酮的方法。 此外，本发明涉及包含1,3-烷基甲基吡咯烷酮和/或1,4-烷基甲基吡咯烷酮和1,3-烷基甲基吡咯烷的混合物，其中1,3-烷基甲基吡咯烷的比例在10至10000ppm的范围内， 以及包含1,3-烷基甲基吡咯烷酮和1,4-烷基甲基吡咯烷酮的混合物，其中1,3-烷基甲基吡咯烷酮与1,4-烷基甲基吡咯烷酮的摩尔比在1:1至10:1的范围内。