Method for producing polytetrahydrofurane having a low color indices
    1.
    发明授权
    Method for producing polytetrahydrofurane having a low color indices 有权
    具有低颜色指数的聚四氢呋喃的制备方法

    公开(公告)号:US07148318B2

    公开(公告)日:2006-12-12

    申请号:US10515208

    申请日:2003-05-19

    摘要: The invention provides a process for preparing polytetrahydrofuran, tetrahydrofuran copolymers, their monoesters or diesters and the monoesters or diesters of polytetrahydrofuran having a low color number in the presence of a catalyst, which comprises converting crude tetrahydrofuran which has been prepared in a manner per se into pure tetrahydrofuran by distillation, subsequently subjecting the latter to essentially complete hydrogenation and using the high-purity tetrahydrofuran obtained in this way for the polymerization directly after its preparation.

    摘要翻译: 本发明提供了一种在催化剂存在下制备聚四氢呋喃,四氢呋喃共聚物,它们的单酯或二酯以及具有低颜色数的聚四氢呋喃的单酯或二酯,其包括将以本身方式制备的粗四氢呋喃转化为 通过蒸馏进行纯四氢呋喃,随后使其后者基本上完全氢化,并使用这样获得的高纯度四氢呋喃直接在其制备之后进行聚合。

    Method for producing polytetrahydrofurane having a low color indices
    2.
    发明申请
    Method for producing polytetrahydrofurane having a low color indices 有权
    具有低颜色指数的聚四氢呋喃的制备方法

    公开(公告)号:US20050182238A1

    公开(公告)日:2005-08-18

    申请号:US10515208

    申请日:2003-05-19

    摘要: The invention provides a process for preparing polytetrahydrofuran, tetrahydrofuran copolymers, their monoesters or diesters and the monoesters or diesters of polytetrahydrofuran having a low color number in the presence of a catalyst, which comprises converting crude tetrahydrofuran which has been prepared in a manner per se into pure tetrahydrofuran by distillation, subsequently subjecting the latter to essentially complete hydrogenation and using the high-purity tetrahydrofuran obtained in this way for the polymerization directly after its preparation.

    摘要翻译: 本发明提供了一种在催化剂存在下制备聚四氢呋喃,四氢呋喃共聚物,它们的单酯或二酯以及具有低颜色数的聚四氢呋喃的单酯或二酯,其包括将以本身方式制备的粗四氢呋喃转化为 通过蒸馏进行纯四氢呋喃,随后使其后者基本上完全氢化,并使用这样获得的高纯度四氢呋喃直接在其制备之后进行聚合。

    Method for processing pTHF polymerization catalysts
    4.
    发明授权
    Method for processing pTHF polymerization catalysts 有权
    加工pTHF聚合催化剂的方法

    公开(公告)号:US06713422B1

    公开(公告)日:2004-03-30

    申请号:US09889403

    申请日:2001-07-17

    IPC分类号: B01J3806

    摘要: A process for working up at least partially deactivated polymerization catalysts for the polymerization or copolymerization of THF which are contaminated with the products of the polymerization or copolymerization of THF comprises (a) in a first step, cleaning the polymerization catalyst by treatment with steam at from 80 to 250° C. and a pressure of from 0.5 to 40 bar and, preferably, (b) in a second step, regenerating the clean polymerization catalyst.

    摘要翻译: 用于处理被THF聚合或共聚的产物污染的至少部分失活的聚合催化剂的聚合催化剂的方法包括(a)在第一步骤中,通过用 80至250℃,压力为0.5至40巴,优选(b)在第二步骤中再生清洁聚合催化剂。

    Method for safely preventing backflowing in the conveying of a fluid
    5.
    发明授权
    Method for safely preventing backflowing in the conveying of a fluid 有权
    用于在流体输送中安全防止回流的方法

    公开(公告)号:US09086191B2

    公开(公告)日:2015-07-21

    申请号:US13001467

    申请日:2009-06-16

    IPC分类号: F17D1/08 F17D1/14 F16K15/00

    摘要: A method for reliably avoiding backflow in the transport of a liquid under pressure via a transport pipe (1), in which a shut-off device (2) with differential pressure switching is arranged, into a container (3) which is under pressure and which comprises the liquid to be transported and/or another liquid is proposed, wherein a pressure accumulator (4) which is filled with the liquid to be transported up to a certain level and above the liquid level, in direct contact with the liquid to be transported, with an inert gas is arranged in the transport pipe (1) upstream from the shut-off device (2) in the transport direction, the inert gas being provided in the pressure accumulator (4) under an excess pressure and in an amount relative to the container (3) to be filled which are designed so that, in the case of a drop in the pressure in the transport pipe (1), the inert gas ensures a positive pressure difference in the transport pipe (1) to the container (3) over a period which is at least as long as the reaction time of the shut-off device (2) and the shut-off device (2) has an emptying pipe (6) with emptying valve (7).

    摘要翻译: 一种用于可靠地避免在压力下输送液体的回流的方法,该输送管(1)具有压差切换的切断装置(2),其中所述输送管(1)设置在处于压力下的容器(3)中, 其包括待运输的液体和/或另一种液体,其中填充有待运输的液体达到一定水平并高于液面的压力蓄积器(4)与液体直接接触 在输送方向上从切断装置(2)的上游配置有惰性气体输送的惰性气体,惰性气体在过压压力下设置在蓄压器(4)中, 相对于被填充的容器(3),其被设计成使得在输送管(1)中的压力下降的情况下,惰性气体确保输送管(1)中的正压差 容器(3)至少在一段时间内 只要关闭装置(2)和切断装置(2)的反应时间具有排空阀(7)的排空管(6)。

    TUBE BUNDLE REACTOR FOR UNCATALYZED OR HOMOGENEOUSLY CATALYZED REACTIONS
    6.
    发明申请
    TUBE BUNDLE REACTOR FOR UNCATALYZED OR HOMOGENEOUSLY CATALYZED REACTIONS 有权
    用于未加氢化或均相催化反应的管组反应器

    公开(公告)号:US20120157719A1

    公开(公告)日:2012-06-21

    申请号:US13380207

    申请日:2010-01-19

    IPC分类号: C07C45/00 B01J19/00

    摘要: The invention relates to a tube bundle reactor with a flat feed hood. Alternatively, the release hood may also have a flat design. The flat design reduces the heat of reaction which arises in the hood in the case of reaction types which take place not only in the tube bundle (uncatalyzed reactions and reactions with homogeneously distributed catalyst). This greatly suppresses undesired reactions which already take place in the hood owing to accumulated heat, which achieves a higher selectivity in the case of thermally sensitive reactions. In addition, the thermal distribution within the hoods can be controlled precisely.The tube bundle reactor comprises a tube bundle which has a feed end which is connected to a feed hood of the tube bundle reactor, wherein the feed hood is configured in a flat design with a cross-sectional area at the feed end and an internal volume, and the ratio of internal volume to cross-sectional area is less than 0.35 m. The invention is further implemented by means of a process for operating a tube bundle reactor, comprising: introducing a reactant mixture into a tube bundle and converting at least a proportion of the reactant mixture within the tube bundle to a product. The introducing comprises: feeding the reactant mixture into an interior of a feed hood of the tube bundle reactor and passing the reactant mixture on into a feed end of the tube bundle in the form of a fluid stream. The fluid stream has a cross-sectional area on entry into the feed end, and the interior of the feed hood through which the fluid stream flows has an internal volume; where the ratio of internal volume to cross-sectional area is less than 0.35 m.

    摘要翻译: 本发明涉及具有扁平进料罩的管束反应器。 或者,释放罩也可以具有平坦的设计。 在反应类型不仅在管束(未催化的反应和具有均匀分布的催化剂的反应)的情况下,扁平设计减少了发动机罩中产生的反应热。 这大大地抑制了由于积热而在罩中发生的不期望的反应,这在热敏反应的情况下实现了更高的选择性。 此外,可以精确地控制罩内的热分布。 管束反应器包括管束,其具有连接到管束反应器的进料罩的进料端,其中进料罩构造成平坦设计,在进料端具有横截面积,内部体积 ,内部体积与横截面积的比值小于0.35μm。 通过用于操作管束反应器的方法进一步实现本发明,其包括:将反应物混合物引入管束并将至少一部分管束内的反应物混合物转化成产物。 引入包括:将反应物混合物进料到管束反应器的进料罩的内部,并将反应物混合物以流体流的形式送入管束的进料端。 流体流在进入进料端时具有横截面面积,流体流流过的进料罩的内部具有内部容积; 其中内部体积与横截面积的比值小于0.35μm。

    Process for the preparation of novel light stabilizers
    7.
    发明授权
    Process for the preparation of novel light stabilizers 失效
    制备新型光稳定剂的方法

    公开(公告)号:US4461898A

    公开(公告)日:1984-07-24

    申请号:US437929

    申请日:1982-11-01

    CPC分类号: C07D211/46 C08K5/3435

    摘要: Mixtures of esters of polyalkylpiperidine derivatives, of the formulae I and II ##STR1## in which the proportions of I to II are 95 to 70% by weight and 5 to 30% by weight, are obtained by reacting about 2 mols of a piperidine of the formula III ##STR2## with 0.9 to 1.3 mols of a diester of the formula IV ##STR3## in the melt at between 100.degree. and 145.degree. C., in the presence of an alkali metal amide as a catalyst.The mixtures of esters thus obtained are very suitable as light stabilizers for plastics.

    摘要翻译: 得到式I和II的多烷基哌啶衍生物的酯的混合物,其中I至II的比例为95至70重量%和5至30重量%,其中得到 通过使约2摩尔的式III(III)的哌啶与熔体中的0.9至1.3摩尔的式IV(II)的二酯在100-145℃之间,在 碱金属酰胺作为催化剂的存在。 由此获得的酯的混合物非常适合作为塑料的光稳定剂。

    PROCESS FOR PREPARING PURE CYCLODODECANONE
    8.
    发明申请
    PROCESS FOR PREPARING PURE CYCLODODECANONE 有权
    制备纯环己酮的方法

    公开(公告)号:US20100191018A1

    公开(公告)日:2010-07-29

    申请号:US12694815

    申请日:2010-01-27

    IPC分类号: C07C45/27

    摘要: The present invention relates to a process for preparing at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group, at least comprising the stages: (a1) oxidation of a composition (A), at least comprising one cyclic olefin with Z cycles and 7 to 16 carbon atoms and at least two C—C double bonds, by means of dinitrogen monoxide to give a composition (A1), (a2) separating off the at least one cyclic olefin with Z cycles and 7 to 16 carbon atoms with at least two C—C double bonds from the composition (A1) in order to obtain a composition (A2), and (b) distillative treatment of the composition (A2) from step (a2) in order to obtain a composition (B), comprising the at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group and less than 1.0% by weight of the at least one compound with Z−1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, where Z can be 1, 2, 3 or 4.

    摘要翻译: 本发明涉及一种制备具有Z环和至少具有7至16个碳原子的酮基的至少一种环状化合物的方法,至少包括以下步骤:(a1)组合物(A)的氧化,至少包含一个环状 烯烃,Z循环和7至16个碳原子和至少两个C-C双键,借助于一氧化二氮,得到组合物(A1),(a2)以Z循环分离至少一种环状烯烃, 16个碳原子与来自组合物(A1)的至少两个C-C双键,以获得组合物(A2),和(b)从步骤(a2)中的组合物(A2)的蒸馏处理,以获得 组合物(B),其包含至少一种Z循环的环状化合物和具有酮基的7至16个碳原子和小于1.0重量%的至少一种具有Z-1循环和7至16个碳原子的化合物, 至少一个醛基,其中Z可以是1,2,3或4个。

    Method for producing an ethylamine
    9.
    发明申请
    Method for producing an ethylamine 失效
    乙胺的制造方法

    公开(公告)号:US20090234163A1

    公开(公告)日:2009-09-17

    申请号:US11908820

    申请日:2006-03-14

    IPC分类号: C07C209/16

    CPC分类号: C07C209/16 C07C211/05

    摘要: Processes comprising: (a) providing a first reactant comprising a bioethanol; and (b) reacting the first reactant with a second reactant comprising a component selected from the group consisting of ammonia, primary amines, secondary amines and mixtures thereof, in the presence of hydrogen and a catalytically effective amount of a heterogeneous hydrogenation/dehydrogenation catalyst to form an ethylamine; wherein the catalyst has been activated at a temperature of 100 to 500° C. for at least 25 minutes; wherein prior to activation the catalyst comprises: (i) 20 to 65% by weight of a support material comprising one or both of zirconium dioxide (ZrO2) and aluminum oxide (Al2O3), (ii) 1 to 30% by weight of oxygen-comprising compounds of copper, calculated as CuO, and (iii) 21 to 70% by weight of oxygen-comprising compounds of nickel, calculated as NiO; and wherein after activation the catalyst has a CO uptake capacity of >110 μmol of CO/g of the catalyst.

    摘要翻译: 方法包括:(a)提供包含生物乙醇的第一反应物; 和(b)使第一反应物与包含选自氨,伯胺,仲胺及其混合物的组分的第二反应物在氢气和催化有效量的非均相氢化/脱氢催化剂存在下反应至 形成乙胺; 其中所述催化剂已经在100至500℃的温度下活化至少25分钟; 其中在活化之前,催化剂包括:(i)20至65重量%的包含二氧化锆(ZrO 2)和氧化铝(Al 2 O 3)中的一种或两种的载体材料,(ii)1至30重量% 包括以CuO计算的铜化合物,和(iii)以NiO计算的含有21重量%的含氧化合物的镍; 并且其中在活化后,催化剂的CO吸收能力为> 110molol的CO / g催化剂。