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    Continuous method for multi-staged drying and subsequent condensation of a polyamide granulate
    3.
    发明授权
    Continuous method for multi-staged drying and subsequent condensation of a polyamide granulate 有权
    多级干燥和聚酰胺颗粒随后冷凝的连续方法

    公开(公告)号：US08703879B2

    公开(公告)日：2014-04-22

    申请号：US12999988

    申请日：2009-06-19

    申请人： Wolfgang Loth ,  Faissal-Ali El-Toufaili ,  Achim Stammer ,  Gad Kory ,  Achim Gerstlauer ,  Jens Becker

    发明人： Wolfgang Loth ,  Faissal-Ali El-Toufaili ,  Achim Stammer ,  Gad Kory ,  Achim Gerstlauer ,  Jens Becker

    IPC分类号： C08G69/16 ,  C08G69/46 ,  C08L77/00

    CPC分类号： C08G69/46 ,  C08G69/16

    摘要： A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.

    摘要翻译： 用于固相中聚酰胺粒料的多级干燥和缩聚的连续方法包括：1）在连续干燥装置中进行预干燥过程，所述连续干燥装置以逆流模式或与惰性气体或蒸汽交叉流动模式运行，或者与 惰性气体和蒸汽，使用颗粒温度在70至200℃的范围内，以及2）在具有移动床的单独的垂直管道中进行随后的连续缩聚过程，颗粒温度在120至210℃的范围内 C.其中管道以逆流模式与惰性气体或蒸汽或惰性气体和蒸汽的混合物操作，惰性气体沿着管道被引入至少两个位置，并且惰性气体的15至90％ 引入垂直管道的底部，并且10至85％的惰性气体被引入颗粒表面下方的上半部分。

    CONTINUOUS METHOD FOR MULTI-STAGED DRYING AND SUBSEQUENT CONDENSATION OF A POLYAMIDE GRANULATE
    4.
    发明申请
    CONTINUOUS METHOD FOR MULTI-STAGED DRYING AND SUBSEQUENT CONDENSATION OF A POLYAMIDE GRANULATE 有权
    聚氨酯颗粒多级干燥和后续凝结的连续方法

    公开(公告)号：US20110092645A1

    公开(公告)日：2011-04-21

    申请号：US12999988

    申请日：2009-06-19

    申请人： Wolfgang Loth ,  Faissal-Ali El-Toufaili ,  Achim Stammer ,  Gad Kory ,  Achim Gerstlauer ,  Jens Becker

    发明人： Wolfgang Loth ,  Faissal-Ali El-Toufaili ,  Achim Stammer ,  Gad Kory ,  Achim Gerstlauer ,  Jens Becker

    IPC分类号： C08L77/06 ,  C08L77/00 ,  C08G63/91

    CPC分类号： C08G69/46 ,  C08G69/16

    摘要： A continuous process for the multistage drying and postcondensation of polyamide pellets in the solid phase comprises 1) carrying out the predrying process in a continuous drying apparatus which is operated in countercurrent mode or in crossflow mode with inert gas or steam, or with a mixture of inert gas and steam, using a pellet temperature in the range from 70 to 200° C., and 2) Carrying out the subsequent continuous postcondensation process in a separate vertical duct with moving bed at a pellet temperature in the range from 120 to 210° C., where the duct is operated in countercurrent mode with inert gas or steam, or with a mixture of inert gas and steam, the inert gas is introduced at least two sites along the duct, and from 15 to 90% of the inert gas is introduced at the base of the vertical duct and from 10 to 85% of the inert gas is introduced in the upper half below the surface of the pellets.

    摘要翻译： 用于固相中聚酰胺粒料的多级干燥和缩聚的连续方法包括：1）在连续干燥装置中进行预干燥过程，所述连续干燥装置以逆流模式或与惰性气体或蒸汽交叉流动模式运行，或者与 惰性气体和蒸汽，使用颗粒温度在70至200℃的范围内，以及2）在具有移动床的单独的垂直管道中进行随后的连续缩聚过程，颗粒温度在120至210℃的范围内 C.其中管道以逆流模式与惰性气体或蒸汽或惰性气体和蒸汽的混合物操作，惰性气体沿着管道被引入至少两个位置，并且惰性气体的15至90％ 引入垂直管道的底部，并且10至85％的惰性气体被引入颗粒表面下方的上半部分。

    Method for separating trioxane from a mixture containing trioxane, formaldehyde and water
    7.
    发明申请
    Method for separating trioxane from a mixture containing trioxane, formaldehyde and water 审中-公开
    从含有三恶烷，甲醛和水的混合物中分离三恶烷的方法

    公开(公告)号：US20070155972A1

    公开(公告)日：2007-07-05

    申请号：US10583696

    申请日：2004-12-21

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

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

    IPC分类号： C07D305/12 ,  C07C41/03

    CPC分类号： C07D323/06 ,  B01D3/146 ,  B01D3/36 ,  Y02P20/127

    摘要： A process for removing trioxane from a mixture I of formaldehyde, trioxane and water, by a) distilling the mixture I in a first distillation stage at a pressure of from 0.1 to 2 bar to obtain a stream II which comprises formaldehyde and a stream III which comprises predominantly trioxane and additionally water and formaldehyde, b) mixing the stream III with a recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde to obtain a stream IIIa which comprises predominantly trioxane and additionally water and formaldehyde, c) distilling the stream IIIa, if appropriate after removing low boilers from the stream III or IIIa in a further distillation stage, in a second distillation stage at a pressure of from 0.2 to 10 bar, the pressure in the second distillation stage being at least 0.1 bar higher than the pressure in the first distillation stage, to obtain a stream IV of trioxane and a stream V which comprises predominantly trioxane and additionally water and formaldehyde, d) distilling the stream V in a third distillation stage at a pressure of from 0.1 to 4 bar to obtain a stream VI which comprises predominantly water and additionally formaldehyde, and the recycle stream VII which comprises predominantly trioxane and additionally water and formaldehyde, e) if appropriate, distilling the stream VI in a fourth distillation stage to obtain a stream VIII which comprises predominantly water, and a stream IX which comprises predominantly formaldehyde.

    摘要翻译： 一种从甲醛，三恶烷和水的混合物I中除去三恶烷的方法，通过以下步骤a）在0.1至2巴的压力下在第一蒸馏阶段中蒸馏混合物I以获得包含甲醛和流III的流II 主要包含三恶烷，另外还含有水和甲醛，b）将流III与主要包含三恶烷，另外含有水和甲醛的再循环流VII混合，得到主要含有三恶烷，另外含有水和甲醛的流IIIa，c）蒸馏流IIIa 如果适当，则在进一步蒸馏阶段从流III或IIIa除去低锅炉后，在0.2至10巴的压力的第二蒸馏阶段中，第二蒸馏阶段中的压力比压力高至少0.1巴 在第一蒸馏阶段，获得三恶烷的流IV和主要包含三恶烷并另外包含的流V 和d）在0.1至4巴的压力下在第三蒸馏阶段中蒸馏物流V以获得主要包含水和另外甲醛的物流VI，以及主要包含三恶烷和另外的水的再循环流VII，以及 甲醛，e）如果合适，在第四蒸馏阶段中蒸馏物流VI以获得主要包含水的物流VIII和主要包含甲醛的物流IX。

    PROCESS FOR PRODUCING MOLDINGS
    8.
    发明申请
    PROCESS FOR PRODUCING MOLDINGS 审中-公开
    生产模具的工艺

    公开(公告)号：US20130052444A1

    公开(公告)日：2013-02-28

    申请号：US13588446

    申请日：2012-08-17

    申请人： Dietrich Scherzer ,  Philippe Desbois ,  Freddy Gruber ,  Achim Stammer

    发明人： Dietrich Scherzer ,  Philippe Desbois ,  Freddy Gruber ,  Achim Stammer

    IPC分类号： B29C39/06 ,  B32B5/00

    CPC分类号： B29C41/08 ,  B29B9/10 ,  B29C41/28 ,  B29C41/365 ,  B29C41/50 ,  B29K2105/251 ,  B29K2277/00 ,  C08G69/16

    摘要： The present invention relates to a process for producing moldings comprising (A) at least one lactam, (B) at least one activator, and (C) at least one catalyst, where (A) to (C) proceed through treatments comprising a) mixing of (A), (B), and (C), b) metering of (A), (B), and (C) into an apparatus for producing mixture droplets, and producing mixture droplets, and c) depositing the mixture droplets comprising (A), (B), and (C) on a belt, and d) producing moldings.

    摘要翻译： 本发明涉及一种用于生产模制品的方法，其包含（A）至少一种内酰胺，（B）至少一种活化剂和（C）至少一种催化剂，其中（A）至（C） （A），（B）和（C）的混合，b）将（A），（B）和（C）计量加入到用于产生混合液滴的装置中，并产生混合物液滴，以及c） 在带上包含（A），（B）和（C）的液滴，以及d）制造模制品。

    Method for the Separation by Distillation of Pure Trioxane
    9.
    发明申请
    Method for the Separation by Distillation of Pure Trioxane 审中-公开
    蒸馏纯三恶烷分离方法

    公开(公告)号：US20070293688A1

    公开(公告)日：2007-12-20

    申请号：US11660530

    申请日：2005-08-18

    申请人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

    发明人： Markus Siegert ,  Neven Lang ,  Eckhard Stroefer ,  Achim Stammer ,  Thorsten Friese

    IPC分类号： C07D323/06

    CPC分类号： B01D3/146 ,  B01D3/141 ,  C07D323/06

    摘要： The present invention relates to a process for distillatively removing pure trioxane from a feedstream (I) comprising trioxane in a proportion of at least 50% by weight, based on the total weight of the feedstream (I), and additionally formaldehyde and water, which comprises feeding the feedstream I and a further aqueous stream (II) which does not contain any components extraneous to the feedstream to a dividing wall column (TWK1) having a dividing wall TW which is arranged substantially perpendicularly and divides the column interior into a feed region (A1), a withdrawal reaction (B1), an upper combined column region (C1) and a lower combined column region (D1), and drawing off from the first dividing wall column (TWK1) a bottom stream (III) comprising pure trioxane and a sidestream (IV) at the withdrawal region (B1), comprising pure water.

    摘要翻译： 本发明涉及一种从基于原料流（I）的总重量至少50重量％的比例的另外的甲醛和水的含有三恶烷的原料流（I）蒸馏除去纯三恶烷的方法，以及另外的甲醛和水 包括将进料流I和不含任何与进料流无关的任何组分的另外的水流（II）进料到具有基本上垂直布置的分隔壁TW的分隔壁塔（TWK 1），并将塔内部分成进料 区域（A 1），取出反应（B 1），上部组合塔区域（C 1）和下部混合塔区域（D 1），从第一分隔壁塔（TWK 1） （III），其包含纯三恶烷和在取出区（B1））的侧流（IV），其包含纯水。

    Method for the separation of formaldehyde from a reaction mixture containing polyols by the addition of solvents before and/or during the distillation
    10.
    发明授权
    Method for the separation of formaldehyde from a reaction mixture containing polyols by the addition of solvents before and/or during the distillation 失效
    在蒸馏之前和/或期间通过加入溶剂从含有多元醇的反应混合物中分离甲醛的方法

    公开(公告)号：US06809224B2

    公开(公告)日：2004-10-26

    申请号：US10168999

    申请日：2002-06-26

    申请人： Matthias Dernbach ,  Detlef Kratz ,  Achim Stammer ,  Gerhard Schulz

    发明人： Matthias Dernbach ,  Detlef Kratz ,  Achim Stammer ,  Gerhard Schulz

    IPC分类号： C07C4582

    CPC分类号： C07C45/82 ,  C07C45/83 ,  C07C47/19

    摘要： Formaldehyde is removed by distillation from reaction solutions containing a methlolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic hydrogen atom &agr; to the carbonyl function or from the reaction of a 2-alkylacrolein or acrolein with water and formaldehyde, by a process in which this reaction was carried out in the presence of catalytic amounts of organic amine. The process permits the improved removal of formaldehyde from the reaction mixture and furthermore facilitates the hydrogenation of the alkanals thus obtained to give polyols.

    摘要翻译： 从甲醛与具有至少一个羰基官能度的至少一个酸性氢原子的α-烷醛或由2-烷基丙烯醛或丙烯醛与水的反应的甲醛反应获得的含有甲基化的烷醛的反应溶液中蒸馏除去甲醛， 甲醛，通过在催化量的有机胺存在下进行该反应的方法。 该方法允许从反应混合物中改善甲醛的去除，并且进一步促进由此获得的链烷烃的氢化以产生多元醇。