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    Process for blending fluids of widely differing viscosities
    1.
    发明授权
    Process for blending fluids of widely differing viscosities 有权
    用于混合广泛不同粘度的流体的方法

    公开(公告)号：US06698917B2

    公开(公告)日：2004-03-02

    申请号：US10159333

    申请日：2002-05-31

    申请人： Arthur William Etchells, III ,  Charles Linfred Henderson ,  Felix Alfred Streiff ,  Andreas Walder

    发明人： Arthur William Etchells, III ,  Charles Linfred Henderson ,  Felix Alfred Streiff ,  Andreas Walder

    IPC分类号： B01F506

    CPC分类号： B01F5/0619 ,  B01F3/10 ,  B01F5/0646

    摘要： A process is provided for blending two fluids having widely differing viscosities, such that the ratio of the two viscosities is at least 10,000:1. The low viscosity fluid is injected into the high viscosity fluid as it flows through a conduit, such that the low viscosity fluid is at least 30% by weight of the total weight of the low viscosity fluid and the high viscosity fluid. The two fluids are then forwarded to a second conduit containing a first set of static mixing elements providing a fluid shear rate in excess of 0.57 sec−1. The two fluids are then further forwarded to a third conduit containing a second set of static mixing elements of a larger diameter than the first set, providing a fluid shear rate in excess of 0.20 sec−1. Within the third conduit the two fluids form a homogeneous blend.

    摘要翻译： 提供了一种用于混合具有广泛不同粘度的两种流体的方法，使得两种粘度的比例至少为10,000:1。 低粘度流体在其流过导管时被注入高粘度流体中，使得低粘度流体为低粘度流体和高粘度流体的总重量的至少30重量％。 然后将两种流体送到含有提供超过0.57秒-1的流体剪切速率的第一组静态混合元件的第二导管。 然后将两种流体进一步送到含有比第一组直径大的第二组静态混合元件的第三导管，提供超过0.20秒-1的流体剪切速率。 在第三导管内，两种流体形成均匀的混合物。

    Continuous process for the production of polyamides
    2.
    发明授权
    Continuous process for the production of polyamides 有权
    生产聚酰胺的连续工艺

    公开(公告)号：US07009028B2

    公开(公告)日：2006-03-07

    申请号：US10439463

    申请日：2003-05-16

    申请人： Arthur William Etchells, III ,  Frederick K. Mallon

    发明人： Arthur William Etchells, III ,  Frederick K. Mallon

    IPC分类号： C08G69/26 ,  C08G69/08 ,  C08G73/10

    CPC分类号： C08G69/28 ,  C08G69/04

    摘要： In a two-step precondensate process for preparing polyamides diamines are reacted with dicarboxylic acid dihalides in a polar, non-basic, inert organic liquid medium under conditions such that a condensation product having a low degree of polymerization is formed. The resulting condensation then is contacted with an aqueous solution of a water-soluble acid acceptor by continuously feeding the components into a reactor system having a total residence time from about 2 seconds to about 2 minutes, and having a Peclet number greater than about 3.5 to form a polyamide product having a high degree of polymerization.

    摘要翻译： 在两步预缩合方法中，制备聚酰胺二胺与二羧酸二卤化物在极性非碱性惰性有机液体介质中反应，使得形成低聚合度的缩合产物。 然后通过将组分连续地供入到具有约2秒至约2分钟的总停留时间的反应器系统中，然后使所得缩合物与水溶性酸受体的水溶液接触，并且具有大于约3.5至约3.5的佩佩克数 形成具有高聚合度的聚酰胺产品。