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1.发明授权Process for obtaining trioxane from aqueous solutions by high-pressure extraction 失效通过高压萃取从水溶液中获得三恶烷的方法
公开(公告)号：US4946561A
公开(公告)日：1990-08-07
申请号：US741754
申请日：1985-06-06
申请人： Gero Braun , Karlheinz Burg , Karl-Friedrich Muck
发明人： Gero Braun , Karlheinz Burg , Karl-Friedrich Muck
IPC分类号： B01D11/04 , C07D323/06
CPC分类号： C07D323/06 , Y02P20/544
摘要： The invention relates to a process for obtaining trioxane from aqueous solutions by high-pressure extraction using an extracting agent which is in the form either of a gas in the supercritical state or of a liquid gas. An intermediate separation is advantageous, especially in the former case.The trioxane can be obtained in high concentration and with a saving of energy by the process according to the invention.
摘要翻译： 本发明涉及一种通过使用超临界状态的气体或液体气体的提取剂通过高压萃取从水溶液中获得三恶烷的方法。 中间分离是有利的，特别是在前一种情况下。 可以通过根据本发明的方法以高浓度和节省能量获得三恶烷。
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2.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
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。
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公开(公告)号：US5041686A
公开(公告)日：1991-08-20
申请号：US546034
申请日：1990-06-29
IPC分类号： B01J29/12 , B01J29/068 , C07B61/00 , C07C45/38 , C07C45/39 , C07C47/055
CPC分类号： B01J29/068 , C07C45/38 , C07C45/39
摘要： A process for the preparation of carbonyl compounds by the oxydehydrogenation of (C.sub.1 -C.sub.4)-alcohols is carried out at a temperature from 400.degree. to 700.degree. C. in the presence of a silicate catalyst which has been doped with silver and silver ions. By means of the process carried out at relatively low temperatures, for example, are that high yields are achieved, the content of carbon monoxide is low and the product gas contains, apart from carbon dioxide, no further determinable by-products and has a low water/formaldehyde ratio.
摘要翻译： 通过（C1-C4） - 醇的氧化脱氢制备羰基化合物的方法在已经掺杂有银和银离子的硅酸盐催化剂的存在下，在400至700℃的温度下进行。 例如，通过在较低温度下进行的方法，可以实现高产率，一氧化碳含量低，除二氧化碳外，产物气体不含任何可进一步确定的副产物且含量低 水/甲醛比例。
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公开(公告)号：US5102838A
公开(公告)日：1992-04-07
申请号：US545852
申请日：1990-06-29
IPC分类号： B01J29/08 , B01J29/068 , C07C45/00 , C07C45/29 , C07C45/38 , C07C45/39 , C07C47/02 , C07C47/04
CPC分类号： C07C45/38 , B01J29/068 , C07C45/002 , C07C45/39
摘要： Silicate catalysts which can be employed for selective oxidation reactions of organic substances, a process for the preparation of these catalysts and their use are described.The catalyst is distinguished by high long-term activity, by the reaction temperature required for the reaction being lower in comparison with catalysts composed of pure silver and by higher conversions and selectivities in the oxidative dehydrogenation of alkanols in comparison with pure silver or silver on supports.
摘要翻译： 描述了可用于有机物质的选择性氧化反应的硅酸盐催化剂，制备这些催化剂的方法及其用途。 催化剂的长期活性高，与纯银催化剂相比反应所需的反应温度较低，与烷基醇氧化脱氢反应相比，在载体上纯银或银相比，反应温度较高 。
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公开(公告)号：US5008463A
公开(公告)日：1991-04-16
申请号：US541629
申请日：1990-06-21
CPC分类号： B01J23/04 , C07C45/002
摘要： The process dehydrogenates methanol in the presence of a catalyst based on aluminum oxide, alkali metal aluminate and/or alkaline earth metal aluminate with the exclusion of oxygen at a temperature of 650.degree. to 1050.degree. C. in a reactor whose inner wall is composed entirely or partly of aluminum oxide. The process gives anhydrous formaldehyde which contains only very minor impurities.
摘要翻译： 该方法在催化剂存在下，在基于氧化铝，碱金属铝酸盐和/或碱土金属铝酸盐的存在下，在内壁全部构成的反应器中，在650℃至1050℃的温度下排除氧气，使甲醇脱氢。 或部分氧化铝。 该方法产生仅含非常小的杂质的无水甲醛。
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公开(公告)号：US4703129A
公开(公告)日：1987-10-27
申请号：US808846
申请日：1985-12-13
IPC分类号： C07D323/06 , C07D325/00 , C07D317/12 , C07D319/06
CPC分类号： C07D323/06
摘要： The invention relates to a process for the continuous preparation of trioxane, optionally together with cyclic formals, from an aqueous formaldehyde solution in the presence of acidic solid-bed catalysts, the reaction taking place without simultaneous evaporation.The process according to the invention can be carried out even at high formaldehyde concentrations without appreciable paraformaldehyde deposits.
摘要翻译： 本发明涉及一种在酸性固体床催化剂存在下，从甲醛水溶液连续制备三恶烷，任选与环状甲缩醛一起连续制备的方法，该反应在不同时蒸发的情况下进行。 根据本发明的方法即使在高甲醛浓度下也可以进行，而没有明显的多聚甲醛沉积。
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公开(公告)号：US4504670A
公开(公告)日：1985-03-12
申请号：US539624
申请日：1983-10-06
申请人： Hartmut Voigt , Karl-Friedrich Muck , Helmut Bar , Herbert Mader , Karlheinz Burg , Gunter Sextro
发明人： Hartmut Voigt , Karl-Friedrich Muck , Helmut Bar , Herbert Mader , Karlheinz Burg , Gunter Sextro
IPC分类号： C07D323/06 , C07D317/12 , C07D319/06 , C07D321/00 , C07D321/06 , C07D321/12
CPC分类号： C07D323/06
摘要： The invention provides a process for the continuous manufacture of trioxan, optionally together with cyclic formals, from aqueous formaldehyde solutions in a circulation reactor with evaporator, the vapor/liquid mixture leaving the evaporator is fed in below the liquid level of the reaction mixture. The process of the invention allows to attain especially high space/time yields.
摘要翻译： 本发明提供了一种在具有蒸发器的循环反应器中连续制备三恶烷，任选地与环状甲醛一起从甲醛水溶液中连续制备的方法，将离开蒸发器的蒸气/液体混合物进料到反应混合物的液面以下。 本发明的方法允许获得特别高的空间/时间产率。
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公开(公告)号：US4323502A
公开(公告)日：1982-04-06
申请号：US81933
申请日：1979-10-04
IPC分类号： B01J27/00 , C07B61/00 , C07D317/12 , C07D323/06 , C07D317/10
CPC分类号： C07D323/06 , C07D317/12
摘要： A process for the simultaneous synthesis of trioxan and cyclic formals is provided, which comprises reacting a mixture of concentrated formaldehyde and diol and/or epoxide with acid catalysts at a temperature of from 30.degree. to 150.degree. C.
摘要翻译： 提供了一种同时合成三氧杂环己烷和环状缩甲醛的方法，其包括使浓甲醛与二醇和/或环氧化物的混合物与酸催化剂在30至150℃的温度下反应。
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公开(公告)号：US4150238A
公开(公告)日：1979-04-17
申请号：US757503
申请日：1977-01-07
摘要： Poly(acrylic acid) salts having specific structural characteristics, which salts are useful for combatting virus diseases.
摘要翻译： 具有特定结构特征的聚（丙烯酸）盐，该盐可用于对抗病毒病。
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10.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
IPC分类号： C08G65/34
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。
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