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    PROCESS FOR PREPARING POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS BY HOMOPOLYMERIZATION OR COPOLYMERIZATION OF TRIOXANE, STARTING FROM METHANOL
    1.
    发明申请
    PROCESS FOR PREPARING POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS BY HOMOPOLYMERIZATION OR COPOLYMERIZATION OF TRIOXANE, STARTING FROM METHANOL 失效
    制备聚甲基苯乙烯共聚物或共聚物的方法，由三元共聚物的共聚合或共聚合，从甲醇开始

    公开(公告)号：US20100280195A1

    公开(公告)日：2010-11-04

    申请号：US12747742

    申请日：2008-12-11

    申请人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

    发明人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

    IPC分类号： C08G65/06 ,  C08F2/00

    CPC分类号： C07D323/06 ,  C08G2/10

    摘要： A process for preparing polyoxymethylene homopolymers or copolymers (7) by homopolymerization or copolymerization of trioxane, starting from methanol (1), in which methanol (1) is oxidized in a first reactor in a first production plant (A) to give an aqueous formaldehyde-comprising stream (2) which is fed to a second production plant (B) in which pure trioxane (6) is obtained and removal of low boilers (5) by distillation is carried out and the pure trioxane (6) is fed to a third production plant (C) in which it is homopolymerized or copolymerized to form polyoxymethylene homopolymers or copolymers (7), wherein the low boiler stream (5) from the low boiler removal column (K 2) is recycled to the feed stream into the first reactor in the first production plant (A), is proposed.

    摘要翻译： 从甲醇（1）开始，通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物（7）的方法，其中甲醇（1）在第一生产设备（A）中的第一反应器中被氧化，得到甲醛水溶液 （2），其被供给到其中获得纯三恶烷（6）并通过蒸馏除去低锅炉（5）的第二生产设备（B），并将纯三恶烷（6）进料至 第三生产厂（C），其中其被均聚或共聚以形成聚甲醛均聚物或共聚物（7），其中来自低锅炉除去塔（K 2）的低沸点物流（5）被再循环到进料流中， 提出了第一个生产厂（A）中的反应堆。

    Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol
    2.
    发明授权
    Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol 失效
    通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物的方法，从甲醇开始

    公开(公告)号：US08378144B2

    公开(公告)日：2013-02-19

    申请号：US12747742

    申请日：2008-12-11

    申请人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

    发明人： Markus Siegert ,  Tobias Kortekamp ,  Eckhard Stroefer ,  Christoph Sigwart ,  Neven Lang

    IPC分类号： C07C213/00

    CPC分类号： C07D323/06 ,  C08G2/10

    摘要： A process for preparing polyoxymethylene homopolymers or copolymers (7) by homopolymerization or copolymerization of trioxane, starting from methanol (1), in which methanol (1) is oxidized in a first reactor in a first production plant (A) to give an aqueous formaldehyde-comprising stream (2) which is fed to a second production plant (B) in which pure trioxane (6) is obtained and removal of low boilers (5) by distillation is carried out and the pure trioxane (6) is fed to a third production plant (C) in which it is homopolymerized or copolymerized to form polyoxymethylene homopolymers or copolymers (7), wherein the low boiler stream (5) from the low boiler removal column (K 2) is recycled to the feed stream into the first reactor in the first production plant (A), is proposed.

    摘要翻译： 从甲醇（1）开始，通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物（7）的方法，其中甲醇（1）在第一生产设备（A）中的第一反应器中被氧化，得到甲醛水溶液 （2），其被供给到其中获得纯三恶烷（6）并通过蒸馏除去低锅炉（5）的第二生产设备（B），并将纯三恶烷（6）进料至 第三生产厂（C），其中其被均聚或共聚以形成聚甲醛均聚物或共聚物（7），其中来自低锅炉除去塔（K 2）的低沸点物流（5）被再循环到进料流中， 提出了第一个生产厂（A）中的反应堆。

    Method for separating tioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification
    4.
    发明授权
    Method for separating tioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 失效
    通过压力变换精馏从三恶烷/甲醛/水混合物中分离二恶烷的方法

    公开(公告)号：US08350063B2

    公开(公告)日：2013-01-08

    申请号：US12682294

    申请日：2008-09-22

    申请人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

    发明人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

    IPC分类号： C07D323/06 ,  C07D45/00 ,  B01D3/10

    CPC分类号： C07D323/06

    摘要： A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which a) a feed stream I comprising formaldehyde as main component and trioxane and water as secondary components is provided, b) the feed stream I, a recycle stream V and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components are fed into a first distillation stage and distilled at a pressure of from 0.1 to 2.5 bar to give a stream II comprising formaldehyde as main component and water as secondary component and a stream III comprising trioxane as main component and water and formaldehyde as secondary components and a stream X comprising water, trioxane and formaldehyde, c) the stream III is, if appropriate after removal of low boilers from the stream III in a low boiler removal stage, distilled in a second distillation stage at a pressure of from 0.2 to 17.5 bar, with the pressure in the second distillation stage being from 0.1 to 15 bar higher than the pressure in the first distillation stage, to give a stream IV consisting essentially of trioxane and the recycle stream V comprising trioxane as main component and water and formaldehyde as secondary components, c1) the stream IV is purified in at least one further trioxane distillation stage at a pressure at the top of from 0.5 to 2 bar to give purified trioxane as side offtake stream XII in the enrichment section of the column, d) the stream X and, if appropriate, a stream IX comprising water as main component are fed into a third distillation stage and distilled at a pressure of from 1 to 10 bar to give a stream VI consisting essentially of water and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components, is described.

    摘要翻译： 提供了从包含甲醛，三恶烷和水的进料流I中分离三恶烷的方法，其中a）以甲醛为主要成分的进料流I和作为次要组分的三恶烷和水，b）进料流I，再循环流 V和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷进料到第一蒸馏阶段并在0.1至2.5巴的压力下蒸馏，得到包含甲醛作为主要成分的流II和作为次要的水 组分和包含三恶烷作为主要组分的流III和作为次要组分的水和甲醛，以及包含水，三恶烷和甲醛的流X，如果在低锅炉中从流III中除去低锅炉之后，则流III 去除阶段，在第二蒸馏阶段在0.2至17.5巴的压力下蒸馏，第二蒸馏阶段的压力为0.1 得到基本上由三恶烷组成的物流IV和包含三恶烷作为主要成分的再循环流V，以及作为次要组分的水和甲醛，c1）流IV至少纯化 在0.5至2巴的顶部的压力下进一步进一步三恶烷蒸馏阶段，以在柱的富集部分中提供作为侧馏出物流XII的纯化的三恶烷，d）流X和如果合适的话，将包含水的流IX 主要组分进料到第三蒸馏阶段并在1至10巴的压力下蒸馏，得到基本上由水组成的料流VI和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷。

    METHOD FOR THE PRODUCTION OF CRUDE TRIOXANE
    5.
    发明申请
    METHOD FOR THE PRODUCTION OF CRUDE TRIOXANE 审中-公开
    生产三氧化二铁的方法

    公开(公告)号：US20100324311A1

    公开(公告)日：2010-12-23

    申请号：US12809338

    申请日：2008-12-11

    申请人： Markus Siegert ,  Neven Lang ,  Joachim Thiel ,  Eckhard Stroefer ,  Christoph Sigwart

    发明人： Markus Siegert ,  Neven Lang ,  Joachim Thiel ,  Eckhard Stroefer ,  Christoph Sigwart

    IPC分类号： C07D323/06

    CPC分类号： C07D323/06 ,  Y02P20/127

    摘要： A process for preparing crude trioxane (1) having a concentration in the range from 50 to 75% by weight of trioxane by trimerization of formaldehyde from an aqueous formaldehyde solution (2) in the presence of an acid catalyst (3) and concentration of the trioxane from the reaction mixture from the trimerization by distillation, wherein the trimerization of the formaldehyde and the concentration of the trioxane from the reaction mixture from the trimerization are carried out in a single column (K) which is divided by a horizontal dividing plate (T) into a lower column region (A) and an upper column region (B), with the lower column region (A) and the upper column region (B) being connected by an external vapor line and an external liquid line, and a reactive distillation in which the formaldehyde is trimerized to trioxane and the trioxane in the reaction mixture is concentrated to the solubility limit of formaldehyde is carried out in the lower column region (A) at a pressure in the range from 1 to 5 bar and a distillation in which the trioxane is concentrated to give crude trioxane having a concentration in the range from 50 to 75% by weight is carried out in the upper column region (B) at a pressure in the range from 200 to 900 mbar, is proposed.

    摘要翻译： 一种在酸催化剂（3）的存在下，通过甲醛从甲醛水溶液（2）中三聚化而制备浓度在50至75重量％范围内的三恶烷的粗三恶烷（1）的方法， 来自三聚的蒸馏反应混合物中的三恶烷，其中甲醛的三聚和来自三聚反应​​混合物的三恶烷的浓度在单塔（K）中进行，该柱由水平分隔板（T ）下部列区域（A）和上部列区域（B），其中下部列区域（A）和上部列区域（B）通过外部蒸汽管线和外部液体管线连接，并且反应性 将甲醛三聚为三恶烷并将反应混合物中的三恶烷浓缩至甲醛的溶解度极限的蒸馏，在下部塔区（A）中在压力下进行 nge为1至5巴，并且其中三恶烷浓缩以产生浓度为50至75重量％浓度的粗三恶烷的蒸馏在上部塔区（B）中以 建议200至900毫巴。

    METHOD FOR SEPARATING TIOXANE FROM A TRIOXANE/FORMALDEHYDE/WATER MIXTURE BY MEANS OF PRESSURE CHANGE RECTIFICATION
    6.
    发明申请
    METHOD FOR SEPARATING TIOXANE FROM A TRIOXANE/FORMALDEHYDE/WATER MIXTURE BY MEANS OF PRESSURE CHANGE RECTIFICATION 失效
    通过压力变化方法从三氧化E /甲醛/水混合物中分离三氧化二锑的方法

    公开(公告)号：US20100270140A1

    公开(公告)日：2010-10-28

    申请号：US12682294

    申请日：2008-09-22

    申请人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

    发明人： Markus Siegert ,  Neven Lang ,  Laszlo Szarvas ,  Christoph Sigwart ,  Franz Niklaus Windlin ,  Eckhard Stroefer

    IPC分类号： B01D3/10 ,  B01D3/36

    CPC分类号： C07D323/06

    摘要： A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which a) a feed stream I comprising formaldehyde as main component and trioxane and water as secondary components is provided, b) the feed stream I, a recycle stream V and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components are fed into a first distillation stage and distilled at a pressure of from 0.1 to 2.5 bar to give a stream II comprising formaldehyde as main component and water as secondary component and a stream III comprising trioxane as main component and water and formaldehyde as secondary components and a stream X comprising water, trioxane and formaldehyde, c) the stream III is, if appropriate after removal of low boilers from the stream III in a low boiler removal stage, distilled in a second distillation stage at a pressure of from 0.2 to 17.5 bar, with the pressure in the second distillation stage being from 0.1 to 15 bar higher than the pressure in the first distillation stage, to give a stream IV consisting essentially of trioxane and the recycle stream V comprising trioxane as main component and water and formaldehyde as secondary components, c1) the stream IV is purified in at least one further trioxane distillation stage at a pressure at the top of from 0.5 to 2 bar to give purified trioxane as side offtake stream XII in the enrichment section of the column, d) the stream X and, if appropriate, a stream IX comprising water as main component are fed into a third distillation stage and distilled at a pressure of from 1 to 10 bar to give a stream VI consisting essentially of water and a recycle stream VII comprising formaldehyde as main component and water and trioxane as secondary components, is described.

    摘要翻译： 提供了从包含甲醛，三恶烷和水的进料流I中分离三恶烷的方法，其中a）以甲醛为主要成分的进料流I和作为次要组分的三恶烷和水，b）进料流I，再循环流 V和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷进料到第一蒸馏阶段并在0.1至2.5巴的压力下蒸馏，得到包含甲醛作为主要成分的流II和作为次要的水 组分和包含三恶烷作为主要组分的流III和作为次要组分的水和甲醛，以及包含水，三恶烷和甲醛的流X，如果在低锅炉中从流III中除去低锅炉之后，则流III 去除阶段，在第二蒸馏阶段在0.2至17.5巴的压力下蒸馏，第二蒸馏阶段的压力为0.1 得到基本上由三恶烷组成的物流IV和包含三恶烷作为主要成分的再循环流V，以及作为次要组分的水和甲醛，c1）流IV至少纯化 在0.5至2巴的顶部的压力下进一步进一步三恶烷蒸馏阶段，以在柱的富集部分中提供作为侧馏出物流XII的纯化的三恶烷，d）流X和如果合适的话，将包含水的流IX 主要组分进料到第三蒸馏阶段并在1至10巴的压力下蒸馏，得到基本上由水组成的料流VI和包含甲醛作为主要成分的再循环料流VII和作为次要成分的水和三恶烷。

    Process for preparing polytetrahydrofuran and derivatives thereof
    9.
    发明授权
    Process for preparing polytetrahydrofuran and derivatives thereof 失效
    制备聚四氢呋喃及其衍生物的方法

    公开(公告)号：US6111147A

    公开(公告)日：2000-08-29

    申请号：US269210

    申请日：1999-04-01

    申请人： Christoph Sigwart ,  Karsten Eller ,  Rainer Becker ,  Klaus-Dieter Plitzko ,  Rolf Fischer ,  Frank Stein ,  Ulrich Mueller ,  Michael Hesse

    发明人： Christoph Sigwart ,  Karsten Eller ,  Rainer Becker ,  Klaus-Dieter Plitzko ,  Rolf Fischer ,  Frank Stein ,  Ulrich Mueller ,  Michael Hesse

    IPC分类号： C08G65/10 ,  C08G18/48 ,  C08G65/20 ,  C08G65/28 ,  C07C43/10 ,  C07C43/11 ,  C07C67/24 ,  C07C69/76

    CPC分类号： C08G65/20 ,  C08G18/4854

    摘要： Polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butyne-1,4-diol, diesters of these polymers with C.sub.2 -C.sub.20 -monocarboxylic acids or monoesters of these polymers with C.sub.1 -C.sub.10 -monocarboxylic acids are prepared by polymerization of tetrahydrofuran in the presence of one of the telogens water, 1,4-butanediol, 2-butyne-1,4-diol, polytetrahydrofuran having a molecular weight of from 200 to 700 Dalton, a C.sub.1 -C.sub.10 -monocarboxylic acid or an anhydride of a C.sub.2 -C.sub.20 -monocarboxylic acid or a mixture of these telogens over a heterogeneous supported catalyst which comprises a catalytically active amount of an oxygen-containing molybdenum and/or tungsten compound on an oxidic support material and which has been calcined at from 5OO.degree. C. to 1OOO.degree. C. after application of the precursor compounds of the oxygen-containing molybdenum and/or tungsten compounds onto the support material precursor, wherein the catalyst is activated by treatment with a reducing agent before it is used as a polymerization catalyst.

    摘要翻译： PCT No.PCT / EP97 / 05204 Sec。 371日期1999年4月1日 102（e）1999年4月1日PCT PCT 1997年9月23日PCT公布。 第WO98 / 15589号公报 日期：1998年4月16日四氢呋喃，四氢呋喃和2-丁炔-1,4-二醇的共聚物，这些聚合物与C2-C20-一元羧酸的二酯或这些聚合物与C1-C10-一元羧酸的单酯通过四氢呋喃 在其中一种使用水，1,4-丁二醇，2-丁炔-1,4-二醇，分子量为200-700道尔顿的聚四氢呋喃，C1-C10-一元羧酸或 C2-C20-一元羧酸或这些方法的混合物在非均相载体催化剂上的混合物，其包含在氧化载体材料上的催化活性量的含氧钼和/或钨化合物，并且已经在500℃煅烧 将含氧钼和/或钨化合物的前体化合物施加到载体材料前体上之后，至1000℃，其中催化剂在用作还原剂之前通过用还原剂进行活化 聚合催化剂。