利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2857 条记录 (耗时 0.025 秒)

    Natural circulation reactor and use for producing linear and cyclic acetals
    2.
    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。

    Double-face circular knit
    8.
    发明授权
    Double-face circular knit 失效
    双面圆形针织

    公开(公告)号：US5651847A

    公开(公告)日：1997-07-29

    申请号：US195859

    申请日：1994-02-10

    申请人： Alfons Loeffler

    发明人： Alfons Loeffler

    IPC分类号： D04B1/22 ,  D04B1/00 ,  D04B1/16 ,  B60R13/01 ,  B68G11/00 ,  D04B9/06 ,  E04F13/00

    CPC分类号： D04B1/16 ,  D10B2403/021 ,  D10B2505/08 ,  Y10T29/481 ,  Y10T442/425 ,  Y10T442/488

    摘要： There is described a double-face circular knit comprising two concentric lengths of knit web and an in-between spacer structure, wherein the spacer threads are optionally textured coarse-filament multifilament yarns, optionally in combination with monofilaments, the distance between the two lengths of knit web is from 0.3 to 8 mm, the stitch density corresponds to a machine gauge from E 16 to E 32, and the density of the spacer threads is between 150 and 250 threads per cm.sup.2. Preferably all the yarns of the double-face circular knit are made of the same polymer.Also described are the production and use of this double-face circular knit.

    摘要翻译： 描述了一种双面圆形针织物，其包括两个同心长度的编织幅材和中间间隔结构，其中间隔丝线是可选地织构化的粗丝复丝纱线，任选地与单丝组合，两个长度之间的距离 针织纤维网为0.3至8毫米，针迹密度对应于E 16至E 32的机械规格，间隔丝的密度为每平方厘米150至250线。 优选地，双面圆形针织物的所有纱线由相同的聚合物制成。 还描述了这种双面圆形针织物的生产和使用。

    Production of fibers or films using specific forming solutions and the fibers of films obtainable thereby
    9.
    发明授权
    Production of fibers or films using specific forming solutions and the fibers of films obtainable thereby 失效
    使用特定的成形溶液生产纤维或薄膜以及由此获得的薄膜的纤维

    公开(公告)号：US5646234A

    公开(公告)日：1997-07-08

    申请号：US416148

    申请日：1995-04-04

    申请人： Holger Jung ,  Richard Neuert ,  Peter Klein ,  Georg-Emerich Miess

    发明人： Holger Jung ,  Richard Neuert ,  Peter Klein ,  Georg-Emerich Miess

    IPC分类号： B29C55/02 ,  B29K77/00 ,  B29L7/00 ,  C08G69/32 ,  C08G69/42 ,  C08J5/18 ,  C08L77/00 ,  C08L77/10 ,  D01F6/60 ,  D01F6/80 ,  D01F6/90 ,  C08G69/12

    CPC分类号： C08J5/18 ,  C08G69/32 ,  C08G69/42 ,  D01F6/805 ,  C08J2377/10 ,  Y10T428/2969 ,  Y10T428/2971 ,  Y10T428/31725

    摘要： A process for producing fibers or films by the steps of:a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol %, based on the total amount of dicarbonyl dihalides in the reaction mixture, of compounds of the formula I or mixtures of such compoundsHal--OC--Ar.sup.1 --CO--Hal (I)with at least 90 mol%, based on the total amount of diamines in the reaction mixture, of compounds of the formula II and optionally III or mixtures of such compoundsH.sub.2 N--Ar.sup.2 --NH.sub.2 (II), H.sub.2 N--Ar.sup.3 --NH.sub.2 (III)where Ar.sup.1, Ar.sup.2 and Ar.sup.3 are independently of each other a bivalent aromatic radical, the proportion of structural repeat units in the aromatic polyamide derived from the compounds of the formula II, based on the proportion of the structural repeat units derived from the compounds of the formulae II and III, being at least 50 mol %, and said aromatic polyamide is soluble in organic solvents,b) forcing the solution of the aromatic polyamide obtained in step a) through dies of the desired cross-sectional shape at temperatures from 40.degree. to 120.degree. C. to form fibers or films,c) removing the organic solvent in a conventional manner to produce solvent-leaner or -free fibers or films sufficiently mechanically stable and nontacky for further processing.The process of the invention omits the customary neutralization after the aromatic polyamide has been prepared.

    摘要翻译： 一种通过以下步骤制备纤维或薄膜的方法：a）通过二羰基二卤化物或其混合物与N-烷基内酰胺中的至少两种二胺作为溶剂进行缩聚来制备芳族聚酰胺，所述缩聚为至少90mol％，基于 对于反应混合物中二羰基二卤化物的总量，式I化合物或这些化合物Hal-OC-Ar1-CO-Hal（I）的混合物与至少90mol％的二胺的总量相比， 反应混合物，式II和任选III的化合物或这些化合物H 2 N-Ar 2 -NH 2（II），H 2 N-Ar 3 -NH 2（III）的混合物，其中Ar 1，Ar 2和Ar 3彼此独立地是二价芳族基团 衍生自式II化合物的芳族聚酰胺中结构重复单元的比例基于衍生自式II和III的化合物的结构重复单元的比例为至少50mol％，所述芳族 聚酰胺可溶于或 粗制溶剂，b）在40℃至120℃的温度下，将步骤a）中获得的芳族聚酰胺溶液强迫所需的横截面形状，以形成纤维或膜，c）将 以常规的方式制备足够机械稳定和非粘性以进行进一步处理的溶剂稀的或无 - 纤维或薄膜。 在制备芳族聚酰胺之后，本发明的方法省略了常规中和。