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    Production of polyester using preblended cobalt-phosphorus
    1.
    发明申请
    Production of polyester using preblended cobalt-phosphorus 有权

    公开(公告)号：US20040044172A1

    公开(公告)日：2004-03-04

    申请号：US10653364

    申请日：2003-09-02

    申请人： ARTEVA NORTH AMERICA S.a.r.l.

    发明人： Rekha V. Kulkarni ,  Ligia Dominguez

    IPC分类号： C08G063/78 ,  C08G063/82 ,  C08G063/00 ,  C08G063/16 ,  C08G063/18 ,  C08G063/87

    CPC分类号： C08G63/87 ,  C08G63/183 ,  C08G63/826 ,  Y10T428/1352

    摘要： A preblended additive composition and process for the preparation of polyester resins useful in the manufacture of plastic containers such as bottles is disclosed. The additive composition includes a cobalt-containing compound that is preblended with a phosphorous compound. The polyester resin, e.g., a PET resin, may be prepared by reacting ethylene glycol with dimethyl terephthalate (DMT) or terephthalic acid (TA) in an esterification reaction. The additive composition may be prepared by quickly dumping the phosphorus compound into the cobalt compound such as cobalt acetate, and the resulting composition is added to the reactor vessel before the polycondensation reaction. On the other hand, the additive composition may be prepared by slowly dumping the phosphorus compound into the cobalt compound over a period of at least 5 minutes. Such preblending substantially eliminates any yellow or blue color, or haze in the product article.

    Drawn polyester yarn having a high tenacity, a high modulus and a low shrinkage
    4.
    发明授权
    Drawn polyester yarn having a high tenacity, a high modulus and a low shrinkage 失效
    具有高强度，高模量和低收缩率的拉伸聚酯纱线

    公开(公告)号：US6015616A

    公开(公告)日：2000-01-18

    申请号：US719135

    申请日：1996-02-20

    申请人： F. Holmes Simons ,  Ron L. Griffith

    发明人： F. Holmes Simons ,  Ron L. Griffith

    IPC分类号： D01D5/08 ,  D01D5/084 ,  D01F6/60 ,  D01F6/62 ,  D02G3/00

    CPC分类号： D01F6/62 ,  D01D5/084 ,  Y10T428/2913 ,  Y10T428/2964

    摘要： In the instant invention, drawn yarns, with the following properties, are obtained: tenacity of at least 8.5 gpd; initial modulus of at least 150 gpd/100%; and shrinkage of less than 6%. Alternatively, the yarn may be characterized as: tenacity of greater than 10 gpd; initial modulus of greater than 120 gpd/100%; and shrinkage of less than 6%. These yarns are made by a process directed mainly toward affecting the yarn properties as they are spun.

    摘要翻译： 在本发明中，获得具有以下特性的拉伸丝：韧度至少为8.5gpd; 初始模量至少为150 gpd / 100％; 收缩率小于6％。 或者，纱线可以表征为：强度大于10gpd; 初始模量大于120 gpd / 100％; 收缩率小于6％。 这些纱线通过主要在纺丝时影响纱线性能的方法制成。

    Reactor with a flexurally rigid stirrer element
    6.
    发明授权
    Reactor with a flexurally rigid stirrer element 失效
    具有弯曲刚性搅拌器元件的反应器

    公开(公告)号：US6007782A

    公开(公告)日：1999-12-28

    申请号：US712429

    申请日：1996-09-11

    申请人： Hartmut Hey ,  Hans Lohe ,  Roland Schmidt ,  Gordon Shaw

    发明人： Hartmut Hey ,  Hans Lohe ,  Roland Schmidt ,  Gordon Shaw

    IPC分类号： B01D1/22 ,  B01J10/02 ,  B01J19/18 ,  C08G63/78 ,  B01J14/00

    CPC分类号： C08G63/785 ,  B01D1/225 ,  B01J10/02 ,  B01J19/1887

    摘要： The invention relates to a device, in particular for the treatment of low-viscosity polymer melts, containing a vessel (1) with a stirrer element, the stirrer element (6) essentially comprising a support structure which passes through the vessel and on which surface formers (8) are arranged. According to the invention, the support structure is designed as a cage-like rod frame (7).This results in the following advantages:1. Owing to the now possible continuous wetting or wiping of the surfaces, encrustations and inhomogeneities are avoided.2. Due to enhanced cascading with weir plates, the residence time spectrum can be controlled, which likewise improves the product quality.3. The flexing of the stirrer element is reduced.

    摘要翻译： 本发明涉及一种装置，特别是用于处理含有具有搅拌器元件的容器（1）的低粘度聚合物熔体的装置，该搅拌器元件（6）基本上包括穿过容器的支撑结构，并且在该表面上 （8）。 根据本发明，支撑结构被设计为笼状杆框架（7）。 这导致以下优点：1.由于现在可能连续润湿或擦拭表面，避免了结垢和不均匀性。 2.由于加强了与堰板的级联，可以控制停留时间谱，同样提高了产品质量。 搅拌器元件的弯曲减小。

    Preparation of dimethyl terephthalate via the air oxidation of p-tolualdehyde
    7.
    发明授权
    Preparation of dimethyl terephthalate via the air oxidation of p-tolualdehyde 有权
    通过对甲苯甲醛的空气氧化制备对苯二甲酸二甲酯

    公开(公告)号：US6160159A

    公开(公告)日：2000-12-12

    申请号：US365325

    申请日：1999-07-30

    申请人： Brad Lee Smith

    发明人： Brad Lee Smith

    IPC分类号： C07C51/255 ,  C07C51/265 ,  C07C67/39 ,  C07C67/00 ,  C07C51/16

    CPC分类号： C07C51/265 ,  C07C51/255 ,  C07C67/39 ,  C07C63/26 ,  C07C69/82

    摘要： The invention is directed to a process for the production of terephthalic acid and esters thereof from p-tolualdehyde or mixtures of p-tolualdehyde and p-xylene. The process of the invention can be carried out at lower temperatures and faster throughput than conventional processes using p-xylene. The use of p-tolualdehyde facilitates safety considerations by eliminating the induction period and high oxiding fluid concentrations encountered in typical oxidation reactions which use only p-xylene as the terephthalic acid or ester precursor.

    摘要翻译： 本发明涉及从对甲苯甲醛或对甲苯甲醛和对二甲苯的混合物生产对苯二甲酸及其酯的方法。 本发明的方法可以在比使用对二甲苯的常规方法更低的温度和更快的产量下进行。 对甲苯甲醛的使用通过消除在仅使用对二甲苯作为对苯二甲酸或酯前体的典型氧化反应中遇到的诱导期和高氧化流体浓度来促进安全性考虑。

    Pressure polymerization of polyester
    9.
    发明授权
    Pressure polymerization of polyester 失效
    聚酯压力聚合

    公开(公告)号：US6127493A

    公开(公告)日：2000-10-03

    申请号：US185998

    申请日：1998-11-04

    申请人： Charles J. Maurer ,  Gordon Shaw ,  Vicky S. Smith

    发明人： Charles J. Maurer ,  Gordon Shaw ,  Vicky S. Smith

    IPC分类号： C08F2/00 ,  C08G63/183 ,  C08G63/78 ,  C08F6/00

    CPC分类号： C08G63/78 ,  C08G63/183 ,  Y02P20/582

    摘要： A process is disclosed for the preparation of a polyester polymer or polyester copolymer under superatmospheric pressure conditions in a pipe or tubular reaction under turbannular flow conditions. Reaction material having a glycol equivalents to carboxylic acid equivalents mole ratio of from 1.0:1 to 1.2:1, together with a superatmospheric dense gaseous medium are fed co-currently to the reactor. Dicarboxylic acid and/or diol raw materials may be injected into any of the reaction zones in the process during operation to achieve the overall desired mole ratio balance. The process operates at temperatures of from about 220.degree. C. to about 320.degree. C., with turbannular flow achieved before the polymer product and gas exit the reactor process. The pressure in the reaction zones can be in the range from 15 psia to 2500 psia. A polymer product having a DP of a greater than 40, more preferably at least about 70, is achieved by the transfer of water from the reacting material polymer melt to the gaseous medium in the reactor.

    摘要翻译： 公开了一种在超大气压条件下在管道或管状反应中在涡流流动条件下制备聚酯聚合物或聚酯共聚物的方法。 将具有1.0:1至1.2:1的羧酸当量摩尔比的二醇当量的反应物质与超大气密度气体介质一起同时加入到反应器中。 在操作过程中，可将二羧酸和/或二醇原料注入任何反应区，以达到总体所需的摩尔比平衡。 该方法在约220℃至约320℃的温度下操作，在聚合物产物和气体离开反应器过程之前达到涡旋流。 反应区中的压力可以在15psia至2500psia的范围内。 通过将水从反应材料聚合物熔体转移到反应器中的气态介质，获得DP大于40，更优选至少约70的聚合物产物。