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28 条记录 (耗时 0.02 秒)

    Process and equipment for the continuous manufacture of trioxan
    1.
    发明授权
    Process and equipment for the continuous manufacture of trioxan 失效
    连续生产三恶烷的工艺和设备

    公开(公告)号：US4340542A

    公开(公告)日：1982-07-20

    申请号：US201751

    申请日：1980-10-29

    申请人： Helmut Bar ,  Herbert Mader ,  Karl-Friedrich Muck ,  Paul Zorner

    发明人： Helmut Bar ,  Herbert Mader ,  Karl-Friedrich Muck ,  Paul Zorner

    IPC分类号： B01J14/00 ,  B01J19/24 ,  C07D323/06

    CPC分类号： C07D323/06 ,  B01J14/00 ,  B01J19/2435

    摘要： The invention relates to a process for the continuous manufacture of trioxan, if appropriate together with cyclic formals, from aqueous formaldehyde solutions in a circulation reactor with an evaporator, wherein the vapor/liquid mixture, before it enters the reactor, is separated into the vapor phase and the liquid phase, and subsequently the two phases are fed separately to the reactor. In particular, high space-time yields can be achieved by the process according to the invention. Moreover, equipment for carrying out this process is a subject of the invention.

    摘要翻译： 本发明涉及一种在具有蒸发器的循环反应器中连续制备三恶烷（如果合适的话）与循环形式的甲醛水溶液的连续制备方法，其中蒸气/液体混合物在其进入反应器之前被分离成蒸气 相和液相，随后两相分别进料到反应器中。 特别地，通过根据本发明的方法可以实现高的时空产率。 此外，用于执行该过程的设备是本发明的主题。

    Process for preparing polyoxymethylene homo- and copolymers and apparatus suitable for this purpose
    3.
    发明申请
    Process for preparing polyoxymethylene homo- and copolymers and apparatus suitable for this purpose 审中-公开
    制备聚甲醛均聚物和共聚物的方法及适用于此目的的设备

    公开(公告)号：US20060252912A1

    公开(公告)日：2006-11-09

    申请号：US11405140

    申请日：2006-04-17

    申请人： Michael Hoffmockel ,  Matthias Kramer ,  Karl-Friedrich Muck ,  Horst Roschert

    发明人： Michael Hoffmockel ,  Matthias Kramer ,  Karl-Friedrich Muck ,  Horst Roschert

    IPC分类号： C08G65/34

    CPC分类号： C08L59/04 ,  C08G2/08 ,  C08G2/10 ,  C08L59/02

    摘要： Process for preparing polyoxymethylene homo- and copolymers and apparatus suitable for this purpose An apparatus is described for preparing polyoxymethylene homo- and copolymers. This has the following elements: A) reactor (1) encompassing a polymerization zone (2) and a deactivation zone (3) directly downstream thereof for polymerizing and deactivating polyoxymethylene homo- and copolymers in a homogeneous phase in a manner known per se, B) depressurizing assembly (4), which, if appropriate, has a metering apparatus (5) for additives for the polymer, C) pelletizer (6), D) extraction apparatus (7), and E) if appropriate, a drying apparatus (8). Use of the apparatus and of the polymerization process carried out therein can achieve particularly low residual monomer contents in a simple manner which saves energy.

    摘要翻译： 制备聚甲醛均聚物和共聚物的方法以及适用于该目的的装置描述了一种用于制备聚甲醛均聚物和共聚物的装置。 这具有以下要素：A）包含聚合区（2）和直接在其下游的失活区（3）的反应器（1），用于以本身已知的方式使均聚相中的聚甲醛均聚物和共聚物聚合和失活，B 减压组件（4），如果合适，其具有用于聚合物的添加剂的计量装置（5），C）造粒机（6），D）提取装置（7）和E）如果合适，可以使用干燥装置 8）。 在其中进行的设备和聚合方法的使用可以以简单的方式实现特别低的残留单体含量，从而节省能量。

    Natural circulation reactor and use for producing linear and cyclic acetals
    4.
    发明授权
    Natural circulation reactor and use for producing linear and cyclic acetals 失效
    自然循环反应器，用于生产线性和环状缩醛

    公开(公告)号：US5955041A

    公开(公告)日：1999-09-21

    申请号：US534550

    申请日：1995-09-27

    申请人： Dieter Arnold ,  Bernhard Hierholzer ,  Hubert Wloch ,  Karl-Friedrich Muck

    发明人： Dieter Arnold ,  Bernhard Hierholzer ,  Hubert Wloch ,  Karl-Friedrich Muck

    IPC分类号： B01J19/24 ,  C07D323/06 ,  F28D8/04 ,  B01D3/02

    CPC分类号： C07D323/06 ,  B01J19/006 ,  B01J19/246 ,  B01J2219/00081 ,  B01J2219/00085

    摘要： This invention relates to a reactor 1 for the continuous production of linear or cyclic acetals, in particular trioxane, dioxolane, tetroxane, dimethoxymethane, diethoxymethane, diethoxyethane and dibutoxyethane. This reactor has internal adjacently arranged evaporator elements 2, which allow for flow-through of a heat transport medium, and which are at least two meters high so as to generate a thermosiphon flow. The clear cross section between the evaporator elements is 20 to 80% of the overall cross section. Using the reactor, circulation ratios of up to 250 can be achieved. Thus, the reliability and availability of a production plant is increased while the susceptibility to breakdown decreases.

    摘要翻译： 本发明涉及用于连续生产线性或环状缩醛的反应器1，特别是三恶烷，二氧戊环，四氧杂环己烷，二甲氧基甲烷，二乙氧基甲烷，二乙氧基乙烷和二丁氧基乙烷。 该反应器具有内部相邻布置的蒸发器元件2，其允许传热介质的流过，并且其高度至少为两米，以便产生热虹吸管流。 蒸发器元件之间的透明横截面为整个横截面的20至80％。 使用反应器，可实现高达250的循环比。 因此，生产设备的可靠性和可用性增加，而击穿的易感性降低。

    Continuous process for removing unstable components from crude oxymethylene copolymer
    7.
    发明授权
    Continuous process for removing unstable components from crude oxymethylene copolymer 失效
    从原始甲基乙烯共聚物中除去不稳定成分的连续方法

    公开(公告)号：US5144005A

    公开(公告)日：1992-09-01

    申请号：US152170

    申请日：1988-02-04

    申请人： Gunter Sextro ,  Karl-Friedrich Muck ,  Karlheinz Burg ,  Eberhard Fischer

    发明人： Gunter Sextro ,  Karl-Friedrich Muck ,  Karlheinz Burg ,  Eberhard Fischer

    IPC分类号： C08G2/10 ,  C08G2/28

    CPC分类号： C08G2/28

    摘要： Continuous process for removing unstable components from crude oxymethylene copolymer, which still contains catalysts, monomeric starting materials and unstable components, by treating the copolymer with deactivators, optionally in the presence of auxiliaries, in a pressure zone, and subsequently removing volatile components in a pressure-release zone in the presence or absence of stabilizers, in which process the crude polymer is fully melted in the absence of the deactivators and auxiliaries immediately after completion of the polymerization step, and the deactivators are subsequently incorporated, alone or together with auxiliaries, under pressure into the resultant polymer melt in at least one pressure zone.By this process, degradation is avoided and significantly better properties are obtained.

    摘要翻译： 通过在压力区任选地在助剂的存在下用失活剂处理共聚物，然后在压力下除去挥发性组分，从而仍然含有催化剂，单体原料和不稳定组分的粗制甲醛共聚物中除去不稳定组分的连续方法 在存在或不存在稳定剂的情况下，释放区域，在该方法中，在聚合步骤完成之后，粗聚合物在不存在失活剂和助剂的情况下完全熔融，随后将失活剂单独或与助剂一起加入到助剂中 在至少一个压力区中压入所得聚合物熔体。 通过该过程，可以避免劣化并获得显着更好的性能。

    Process for preparation of polymer blends composed of polyoxymethylenes and of thermoplastic elastomers
    9.
    发明申请
    Process for preparation of polymer blends composed of polyoxymethylenes and of thermoplastic elastomers 失效
    由聚甲醛和热塑性弹性体组成的聚合物共混物的制备方法

    公开(公告)号：US20070060715A1

    公开(公告)日：2007-03-15

    申请号：US11520415

    申请日：2006-09-13

    申请人： Karl-Friedrich Muck ,  Ernst Hofmann ,  Michael Hoffmockel

    发明人： Karl-Friedrich Muck ,  Ernst Hofmann ,  Michael Hoffmockel

    IPC分类号： C08L71/02 ,  C08L75/04 ,  B32B27/00

    CPC分类号： C08L59/00 ,  C08L75/04 ,  Y10T428/31942 ,  C08L2666/20

    摘要： The invention relates to a process for preparation of polymer blends comprising at least one polyoxymethylene and at least one thermoplastic elastomer, where the thermoplastic elastomer is micropelletized by a pelletizing process and the pellets obtained in a) are dispersed in the polyoxymethylene matrix via melting of the components and mixing of these at low shear forces, and also to the use of micropelletized thermoplastic elastomers for preparation of polyoxymethylenes with low formaldehyde emission.

    摘要翻译： 本发明涉及一种制备包含至少一种聚甲醛和至少一种热塑性弹性体的聚合物共混物的方法，其中热塑性弹性体通过造粒工艺进行微胶体化，并且将a）中获得的颗粒分散在聚甲醛基体中， 组分和这些在低剪切力下的混合，以及使用微胶体化热塑性弹性体制备低甲醛释放的聚甲醛。

    Process for separating formaldehyde and trioxane
    10.
    发明授权
    Process for separating formaldehyde and trioxane 失效
    甲醛和三恶烷分离方法

    公开(公告)号：US5872263A

    公开(公告)日：1999-02-16

    申请号：US431100

    申请日：1995-04-28

    申请人： Michael Hoffmockel ,  Karl-Friedrich Muck ,  Gunter Sextro

    发明人： Michael Hoffmockel ,  Karl-Friedrich Muck ,  Gunter Sextro

    IPC分类号： C07C45/78 ,  C07C45/82 ,  C07C47/058 ,  C07D323/06

    CPC分类号： C07D323/06 ,  C07C45/783 ,  C07C45/82

    摘要： A process for separating a gaseous reaction mixture in the preparation of trioxane is described, in which a) the gaseous mixture leaving the reactor is scrubbed in countercurrent with an organic solvent whose boiling point is above 135.degree. C. in which the trioxane predominantly dissolves and which leaves the formaldehyde predominantly in the gas phase which is returned to the reactor, b) the trioxane together with residual formaldehyde is stripped from the solvent by distillation via a column, the overhead product being partially condensed in the temperature range from 62.degree. to 100.degree. C. c) some of the resulting condensate is applied to the column as reflux and some is taken off as product and d) the non-condensed portion is returned to the scrubbing step a).

    摘要翻译： 描述了在三恶烷制备中分离气态反应混合物的方法，其中a）离开反应器的气体混合物与沸点高于135℃的有机溶剂逆流洗涤，其中三恶烷主要溶于其中， 其主要在气相中离开甲醛，其返回到反应器中，b）通过柱蒸馏将三恶烷与残余甲醛一起从溶剂中汽提，塔顶产物在62℃至100℃的温度范围内部分冷凝 c）将一些所得的冷凝物作为回流加到塔上，一些作为产物取出，d）将未冷凝的部分返回到洗涤步骤a）。