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    POWER RECOVERY FOR USE IN START-UP OR RE-START OF A PURE TEREPHTHALIC ACID PRODUCTION PROCESS
    31.
    发明申请
    POWER RECOVERY FOR USE IN START-UP OR RE-START OF A PURE TEREPHTHALIC ACID PRODUCTION PROCESS 审中-公开
    电源恢复用于启动或重新启动纯正庚酸生产过程

    公开(公告)号：WO2014189818A1

    公开(公告)日：2014-11-27

    申请号：PCT/US2014/038546

    申请日：2014-05-19

    Applicant: INVISTA TECHNOLOGIES S.À.R.L.

    Inventor： ROBINS, Clive, T. ,  CARRICK, Harald, B. ,  AIRD, Graham

    IPC: F01N3/08 ,  B01D53/86 ,  B01D53/75 ,  F02C6/18 ,  F01K25/14 ,  F23J15/02

    CPC classification number: F02C6/18 ,  F01K25/14 ,  F01N5/02 ,  F02C3/22 ,  F05D2220/62 ,  F22B1/1815

    Abstract: The invention relates to a method and system for recovering power from the gaseous stream produced by a paraxylene - air oxidation reaction. Specifically, the invention is based on heating the gaseous stream from the oxidation reaction to a temperature of at least 600°C, recovering energy through an expander, heating the expander vent stream and recovering heat from the vent stream. The recovered heat is used to maintain the oxidation process, purification process, start-up the process, or re¬ start the process after an interruption.

    Abstract translation: 本发明涉及一种从对二甲苯 - 空气氧化反应产生的气流中回收功率的方法和系统。 具体地，本发明基于将来自氧化反应的气流加热到至少600℃的温度，通过膨胀器回收能量，加热膨胀机排放流并从排气流中回收热量。 回收的热量用于维持氧化过程，净化过程，启动过程，或在中断后重新启动过程。

    VACUUM PRE-CASTING OF POLYAMIDE POLYMERS
    32.
    发明申请
    VACUUM PRE-CASTING OF POLYAMIDE POLYMERS 审中-公开
    聚氨酯聚合物的真空预成型

    公开(公告)号：WO2014179056A1

    公开(公告)日：2014-11-06

    申请号：PCT/US2014/034206

    申请日：2014-04-15

    Applicant: INVISTA TECHNOLOGIES S.à.r.l.

    Inventor： MONSTER, Leen ,  NOMIKOS, Paul

    IPC: B29B9/12 ,  C08G69/28

    CPC classification number: B29B9/12 ,  B29B7/38 ,  B29B7/72 ,  B29B7/7461 ,  B29B7/90 ,  B29B9/06 ,  B29B9/14 ,  B29K2077/00 ,  C08G69/28

    Abstract: The present disclosure provides methods and apparatuses providing uniform polyamide pellets. In one example, a method can include maintaining a vacuum during a pre-casting polymerization cycle of the cyclic process such that the pre-casting polymerization cycle produces a reactive polyamide polymer with decreased pre-casting polymerization cycle time, extruding the reactive polyamide polymer during a casting cycle by adjusting process parameters including vessel pressure and extrusion valve opening to generate a throughput of extruded polymer, and cutting the extruded polymer at a cutting speed substantially proportional to the throughput to provide polyamide pellets.

    Abstract translation: 本公开提供了提供均匀聚酰胺颗粒的方法和装置。 在一个实例中，一种方法可以包括在循环过程的预铸聚合循环期间维持真空，使得预铸聚合循环产生具有降低的预铸聚合循环时间的反应性聚酰胺聚合物，在反应性聚酰胺聚合物期间挤出反应性聚酰胺聚合物 通过调整包括容器压力和挤出阀打开的过程参数以产生挤出聚合物的通过量并以基本上与生产量成比例的切割速度切割挤出的聚合物以提供聚酰胺颗粒的铸造循环。

    REDUCTION OF ORGANONITRILE IMPURITY LEVELS IN HCN FROM AN OXYGEN ANDRUSSOW PROCESS
    33.
    发明申请
    REDUCTION OF ORGANONITRILE IMPURITY LEVELS IN HCN FROM AN OXYGEN ANDRUSSOW PROCESS 审中-公开
    从氧气和硫酸过程中减少HCN中的有机物污染物浓度

    公开(公告)号：WO2014099613A1

    公开(公告)日：2014-06-26

    申请号：PCT/US2013/074699

    申请日：2013-12-12

    Applicant: INVISTA TECHNOLOGIES S.À.R.L.

    Inventor： FORSYTH, Stewart ,  LIU, Aiguo ,  RENNER, Martin, J. ,  STAHLMAN, Brent, J.

    IPC: C01C3/02

    CPC classification number: C01C3/0212

    Abstract: The invention provides an oxygen Andrussow process for production of hydrogen cyanide from a methane-containing feedstock such as natural gas in the presence of oxygen and ammonia over a platinum catalyst, wherein the production of byproduct organonitrile impurities, such as acrylonitrile, is reduced. Limiting the content of C 2 + hydrocarbons in the methane feedstock in the oxygen Andrussow process, in contrast to the air Andrussow process, has been found to reduce formation of organonitriles, such as acrylonitrile. The organonitrile impurities can require additional processing for removal, cause fouling of equipment, and can also contribute to hydrogen cyanide polymerization. Reduction of C 2 + hydrocarbon levels to less than 2 wt%, or 1 wt%, or less than 0.1 wt%, in the methane can provide an improved yield of higher purity HCN. Reduction of C 2 + hydrocarbon levels also solves the problem of polymer buildup in process equipment, reducing downtime required for cleaning when higher C 2 + hydrocarbon levels are present in the reaction feed.

    Abstract translation: 本发明提供了一种用于在铂催化剂上在氧和氨存在下从含甲烷的原料例如天然气生产氰化氢的氧气Andrussow方法，其中副产物有机腈杂质如丙烯腈的生产被还原。 已经发现，与空气Andrussow方法相反，限制了氧气Andrussow方法中甲烷原料中的C2 +烃的含量，以减少有机腈如丙烯腈的形成。 有机腈杂质可能需要额外的除去处理，造成设备污染，也可能导致氰化氢聚合。 在甲烷中将C2 +烃水平降低至小于2重量％，或1重量％或小于0.1重量％可提供更高纯度HCN的提高的产率。 降低C2 +烃水平也解决了工艺设备中聚合物积聚的问题，当反应进料中存在较高的C2 +烃含量时，可减少清洗所需的停机时间。

    STITCHBONDED FABRIC
    37.
    发明申请
    STITCHBONDED FABRIC 审中-公开
    刺绣布

    公开(公告)号：WO2004076733A1

    公开(公告)日：2004-09-10

    申请号：PCT/US2004/005322

    申请日：2004-02-20

    Applicant: INVISTA TECHNOLOGIES S.à.r.l. ,  YANAGAWASE, Takeshi ,  ISSHIKI, Takasaburo

    Inventor： YANAGAWASE, Takeshi ,  ISSHIKI, Takasaburo

    IPC: D04B21/00

    CPC classification number: D04H1/45 ,  D04B21/165 ,  D04H1/52 ,  D04H3/115 ,  D04H3/16 ,  D06N3/0009 ,  Y10T428/24033 ,  Y10T442/637 ,  Y10T442/643

    Abstract: The invention provides a stitchbonded nonwoven fabric comprising a nonwoven web, stitches of a first yarn, and stitches of a second yarn wherein the first yarn comprises polyester bicomponent fibers exhibiting latent crimp and comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate). The invention further provides a process for making such stitchbonded nonwoven fabric.

    Abstract translation: 本发明提供了一种缝合非织造织物，其包括非织造纤维网，第一纱线的线圈和第二纱线的线圈，其中第一纱线包含显示潜在卷曲且包含聚（对苯二甲酸乙二醇酯）和聚（对苯二甲酸丙二醇酯）的聚酯双组分纤维。 本发明还提供了制造这种缝合无纺织物的方法。

    THIN-WALLED POLYURETHANE ARTICLES
    39.
    发明申请
    THIN-WALLED POLYURETHANE ARTICLES 审中-公开

    公开(公告)号：WO2003103741A3

    公开(公告)日：2003-12-18

    申请号：PCT/US2003/017258

    申请日：2003-06-03

    Applicant: INVISTA TECHNOLOGIES S.à.r.l.

    Inventor： DIMAIO, William, G., Jr.

    IPC: C08G18/10

    Abstract: This invention relates to low-tack thin-walled articles comprising a polyurethane elastomer, for example surgical gloves, clean-room gloves, condoms, and the like. More particularly, the invention relates to such elastomeric articles containing specific amounts of molecular sieve.

    PROCESS FOR PRODUCING A PARTIALLY BALANCED ACID SOLUTION
    40.
    发明申请
    PROCESS FOR PRODUCING A PARTIALLY BALANCED ACID SOLUTION 审中-公开
    生产部分平衡酸溶液的方法

    公开(公告)号：US20160060460A1

    公开(公告)日：2016-03-03

    申请号：US14786651

    申请日：2014-04-15

    Applicant: INVISTA TECHNOLOGIES S.À. R.L.

    Inventor： Robert J. WELCH

    IPC: C08L77/06 ,  G01N27/416 ,  G01N33/44

    CPC classification number: C08L77/06 ,  C07C51/412 ,  C08G69/28 ,  G01N27/4167 ,  G01N33/442 ,  Y02P20/582 ,  C07C55/14 ,  C07C55/02

    Abstract: A process for producing a partially balanced acid solution that involves metering dicarboxylic acid powder, based on weight, from a loss-in-weight feeder to a feeding conduit that transfers the dicarboxylic acid powder at a low variability feed rate into an in-line disperser, adding a first feed stream of diamine to the in-line disperser in an amount sufficient to form the partially balanced acid solution having a solids content of less than 60%, and storing the partially balanced acid solution at a temperature to maintain the dissolved dicarboxylic acid and to prevent formation of a slurry. The partially balanced acid solution may be used as a feed solution to prepare a nylon salt solution. Process controls for the process are also disclosed.

    Abstract translation: 一种制备部分平衡的酸溶液的方法，其涉及将二羧酸粉末以重量计从重量损失进料器计量到以低变异性进料速率将二羧酸粉末转移到在线分散器中的进料管道 将二胺的第一进料流以足以形成固体含量小于60％的部分平衡的酸溶液的量向在线分散器中加入，并将部分平衡的酸溶液储存在保持溶解的二羧酸的温度 酸，并防止淤浆的形成。 部分平衡的酸溶液可以用作进料溶液以制备尼龙盐溶液。 还公开了该方法的过程控制。

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