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142 条记录 (耗时 0.027 秒)

    METHOD OF PRODUCING TRIOXANE
    4.
    发明申请
    METHOD OF PRODUCING TRIOXANE 审中-公开
    生产三氧化二铁的方法

    公开(公告)号：US20160075679A1

    公开(公告)日：2016-03-17

    申请号：US14817736

    申请日：2015-08-04

    申请人： Sung Yong BAEK

    发明人： Sung Yong BAEK

    IPC分类号： C07D323/06

    CPC分类号： C07D323/06

    摘要： Disclosed is a method of producing trioxane, including: (A) preparing trioxane from a high-concentration formaldehyde aqueous solution in the presence of an acid catalyst; (B) distilling a mixture including trioxane; (C) liquefying the distilled gas mixture; (D) mixing the liquefied liquid mixture with an extraction solvent and separating the mixture into an aqueous phase and a solvent phase; (E) distilling the solvent phase to give trioxane, and mixing the aqueous phase with the extraction solvent to give a mixture, which is then separated into an aqueous phase and a solvent phase; and (F) discharging the aqueous phase separated in (E) out of the system, and recirculating the solvent phase so as to be reused in (D) and (E).

    摘要翻译： 公开了三恶烷的制造方法，其包括：（A）在酸催化剂的存在下，由高浓度甲醛水溶液制备三恶烷; （B）蒸馏含三恶烷的混合物; （C）液化蒸馏气体混合物; （D）将液化液体混合物与提取溶剂混合并将混合物分离成水相和溶剂相; （E）蒸馏除去溶剂相，得到三恶烷，并将水相与萃取溶剂混合，得到混合物，然后将其分离成水相和溶剂相; 和（F）将（E）中分离出的水相排出体系，并使溶剂相再循环以便在（D）和（E）中重新使用。

    Process for Producing A Cyclic Acetal In A Heterogeneous Reaction System
    5.
    发明申请
    Process for Producing A Cyclic Acetal In A Heterogeneous Reaction System 有权
    在异相反应体系中生成环状缩醛的方法

    公开(公告)号：US20140350216A1

    公开(公告)日：2014-11-27

    申请号：US14359594

    申请日：2012-11-23

    申请人： Ticona GMBH

    发明人： Michael Haubs ,  Damian Feord ,  n/a Joni ,  Klaus Kurz ,  Jürgen Lingnau

    IPC分类号： C07D323/06 ,  C08G65/06

    CPC分类号： C07D323/06 ,  C07C47/04 ,  C07D323/04 ,  C08G2/10 ,  C08G2/36 ,  C08G65/06 ,  C08G65/16 ,  C08G65/30 ,  C08G2650/62 ,  C08J11/16 ,  C08J11/28 ,  C08J2359/02 ,  Y02P20/125

    摘要： A process for producing a cyclic acetal is disclosed. According to the process, a formaldehyde source is combined with an aprotic compound and contacted with a heterogeneous catalyst which causes the formaldehyde source to convert into a cyclic acetal such as trioxane. The catalyst, for instance, may comprise a solid catalyst such as an ion exchange resin. In one embodiment, the process is used for converting anhydrous formaldehyde gas to trioxane. The anhydrous formaldehyde gas may be produced form an aqueous formaldehyde solution by an extractive distillation.

    摘要翻译： 公开了一种制备环状缩醛的方法。 根据该方法，甲醛源与非质子化合物组合并与非均相催化剂接触，使得甲醛源转化为环状缩醛如三恶烷。 例如，催化剂可以包含固体催化剂，例如离子交换树脂。 在一个实施方案中，该方法用于将无水甲醛气体转化为三恶烷。 无水甲醛气体可以通过萃取蒸馏由甲醛水溶液形成。

    METHOD FOR PREPARING 1,3,5-TRIOXANE
    6.
    发明申请
    METHOD FOR PREPARING 1,3,5-TRIOXANE 有权
    制备1,3,5-三氯乙烯的方法

    公开(公告)号：US20130261318A1

    公开(公告)日：2013-10-03

    申请号：US13882034

    申请日：2011-08-18

    申请人： In Gi Cho ,  Jin Sang Choi ,  Kyung Min Kang

    发明人： In Gi Cho ,  Jin Sang Choi ,  Kyung Min Kang

    IPC分类号： C07D323/06

    CPC分类号： C07D323/06 ,  B01D3/009 ,  B01D3/40 ,  Y02P20/127

    摘要： The present invention relates to a method for preparing 1,3,5-trioxane using a reaction distillation tower including a reactor and integrally formed distillation and extraction sections. Particularly, the present invention relates to a method for preparing 1,3,5-trioxane characterized in that the amount of formaldehyde discharged to the outside of the system is reduced, to thereby increase the yield of 1,3,5-trioxane by recirculating a portion of the water phase, which is discharged through the top of the reaction extraction tower, to the extraction section, and thus to the upper portion of the extractor supply stream which supplies extractant to the extraction section.

    摘要翻译： 本发明涉及使用包括反应器和整体形成的蒸馏和萃取部分的反应蒸馏塔制备1,3,5-三恶烷的方法。 特别地，本发明涉及一种制备1,3,5-三恶烷的方法，其特征在于减少了排出到体系外的甲醛的量，从而通过再循环来提高1,3,5-三恶烷的产率 通过反应提取塔的顶部排出的水相的一部分提取到提取部分，从而提供给提取器供应流的上部，该提取物供应流提供到提取部分。

    Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification
    7.
    发明授权
    Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 有权
    通过压力变换精馏从三恶烷/甲醛/水混合物中分离三恶烷的方法

    公开(公告)号：US07713387B2

    公开(公告)日：2010-05-11

    申请号：US10583698

    申请日：2004-12-21

    申请人： Markus Siegert ,  Neven Lang ,  Eckhard Ströfer ,  Achim Stammer ,  Thorsten Friese ,  Hans Hasse

    发明人： Markus Siegert ,  Neven Lang ,  Eckhard Ströfer ,  Achim Stammer ,  Thorsten Friese ,  Hans Hasse

    IPC分类号： B01D3/00 ,  C07D323/06 ,  C07C45/78

    CPC分类号： C07D323/06

    摘要： A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.

    摘要翻译： 一种从甲醛，三恶烷和水的使用流I中除去三恶烷的方法，通过以下步骤：a）提供以甲醛为主要成分的使用流I和作为第二组分的三恶烷和水，b）将使用流I与再循环 流VII以获得进料流Ia，c）在第一蒸馏阶段中蒸馏出使用流Ia以获得作为主要组分的甲醛的流II和作为第二组分的水，以及作为主要组分的三恶烷的流III和 水和甲醛作为次要组分，d）在具有高于第一蒸馏阶段的压力的第二蒸馏阶段中蒸馏料流III，得到三恶烷的流IV和三恶烷的流V作为主要成分， 甲醛作为次要组分，e）在第三蒸馏阶段中蒸馏物流V以获得水的流VI和三恶烷的再循环流VII作为主要成分，水和甲醛为t 他的次要成分。

    Spiro-1,2,4-trioxanes
    9.
    发明授权
    Spiro-1,2,4-trioxanes 失效
    螺-1,2,4-三恶烷

    公开(公告)号：US07495025B2

    公开(公告)日：2009-02-24

    申请号：US11514453

    申请日：2006-09-01

    申请人： Chandan Singh ,  Heetika Malik ,  Sunil Kumar Puri

    发明人： Chandan Singh ,  Heetika Malik ,  Sunil Kumar Puri

    IPC分类号： A61K31/357 ,  C07D323/06

    CPC分类号： C07D323/04

    摘要： The present invention relates to spiro 1,2,4-trioxanes of general formula 4. This invention more particularly relates to a process for the preparation of a series of spiro 1,2,4-trioxanes. Wherein, Ar represents aryl groups such as phenyl, 4-biphenyl, 4-chlorophenyl, 4-methoxyphenyl, 4-methylphenyl, 4-cyclohexylphenyl, 1-naphthyl, 2-naphthyl and the like and R represents hydrogen or the alkyl group such as methyl, ethyl and the like. Several of these compounds show high order of antimalarial activity against multidrug-resistant malaria in mice and thus hold promise as antimalarial agents against multidrug-resistant malaria.

    摘要翻译： 本发明涉及通式4的螺-1,2,4-三恶烷。本发明更具体地涉及制备一系列螺-1,2,4-三恶烷的方法。 其中Ar表示苯基，4-联苯基，4-氯苯基，4-甲氧基苯基，4-甲基苯基，4-环己基苯基，1-萘基，2-萘基等芳基，R表示氢或烷基 甲基，乙基等。 这些化合物中的几种在小鼠中表现出抗多种抗疟疾抗疟活性，因此作为抵抗多药耐药性疟疾的抗疟剂具有希望。

    Integrated Method For the Production of Trioxane From Formaldehyde
    10.
    发明申请
    Integrated Method For the Production of Trioxane From Formaldehyde 审中-公开
    甲醛生产三恶烷的综合方法

    公开(公告)号：US20080281109A1

    公开(公告)日：2008-11-13

    申请号：US12063155

    申请日：2006-08-01

    申请人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

    发明人： Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese ,  Markus Siegert ,  Hans Hasse ,  Thomas Grutzner ,  Sergej Blagov

    IPC分类号： C07D323/06

    CPC分类号： C07D323/06 ,  Y02P20/125

    摘要： The invention relates to an integrated process for preparing trioxane from formaldehyde in which, in a first step, a stream A1 comprising water and formaldehyde and a recycle stream B2 consisting substantially of water and formaldehyde are fed to a trioxane synthesis reactor in which the formaldehyde is converted to trioxane to obtain a product stream A2 comprising trioxane, water and formaldehyde. Stream A2 and a recycle stream D1 comprising trioxane, water and formaldehyde are fed to a first distillation column and distilled at a pressure in the range from 0.1 to 2.5 bar to obtain a stream B1 enriched in trioxane, and the stream B2 consisting substantially of water and formaldehyde. Stream B1 is fed to a second distillation column and distilled at a pressure in the range from 0.2 to 17.5 bar to obtain a product stream C2 consisting substantially of trioxane, and a stream C1 comprising trioxane, water and formaldehyde. Stream C1 is fed to a third distillation column and distilled at a pressure in the range from 1 to 10 bar to obtain the recycle stream D1 comprising trioxane, water and formaldehyde, and a stream D2 consisting substantially of water.

    摘要翻译： 本发明涉及从甲醛制备三恶烷的综合方法，其中在第一步中，将包含水和甲醛的料流A 1和基本上由水和甲醛组成的再循环料流B 2加入到三恶烷合成反应器中，其中 将甲醛转化成三恶烷，得到包含三恶烷，水和甲醛的产物流A 2。 将流A 2和包含三恶烷，水和甲醛的再循环流D 1加入到第一蒸馏塔中，并在0.1-2.5巴的压力下蒸馏，得到富含三恶烷的料流B 1，并且料流B 2 基本上由水和甲醛组成。 将料流B 1加入到第二蒸馏塔中，在0.2至17.5巴的压力下蒸馏，得到基本上由三恶烷组成的产物流C 2和包含三恶烷，水和甲醛的料流C 1。 将料流C 1加入到第三蒸馏塔中并在1至10巴的压力下进行蒸馏以获得包含三恶烷，水和甲醛的再循环流D 1和基本上由水组成的料流D 2。