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    MELTBLOWN NONWOVEN COMPOSITIONS AND METHODS FOR MAKING THEM
    1.
    发明申请
    MELTBLOWN NONWOVEN COMPOSITIONS AND METHODS FOR MAKING THEM 审中-公开
    非金属组合物及其制备方法

    公开(公告)号：WO2012064468A2

    公开(公告)日：2012-05-18

    申请号：PCT/US2011/056695

    申请日：2011-10-18

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC. ,  RICHESON, Galen, C. ,  WESTWOOD, Alistair, D.

    Inventor： RICHESON, Galen, C. ,  WESTWOOD, Alistair, D.

    IPC: D01F6/30

    CPC classification number: D01F6/30 ,  C08F8/50 ,  C08F210/06 ,  C08F2800/10 ,  C08F2810/10 ,  C08L23/142 ,  C08L2203/12 ,  D04H1/4291 ,  D04H1/544 ,  D04H1/559 ,  D04H1/56 ,  D04H3/007 ,  Y10T442/601 ,  C08F210/16 ,  C08F2500/12 ,  C08F2500/15 ,  C08F2500/20 ,  C08L2023/42

    Abstract: Meltblown nonwoven compositions and processes for forming them are described herein. In one or more embodiments, the invention is directed to meltblown nonwoven fabrics having at least one elastic layer, wherein the elastic layer comprises a propylene-based polymer having an MFR greater than about 25 g/10 min. Additionally, the propylene-based polymer comprises from about 5 to about 25 wt% of one or more C2 and/or C4-Ci2 a-olefms and has a triad tacticity greater than about 90% and a heat of fusion less than about 75 J/g. The present invention is also directed to processes for forming meltblown nonwoven fabrics comprising forming a molten propylene-based polymer having an MFR of at least about 25 g/10 min, forming fibers comprising the propylene-based polymer, and forming an elastic nonwoven layer from the fibers.

    Abstract translation: 熔喷非织造组合物及其形成方法在本文中描述。 在一个或多个实施方案中，本发明涉及具有至少一个弹性层的熔喷非织造织物，其中弹性层包含MFR大于约25g / 10min的丙烯类聚合物。 此外，基于丙烯的聚合物包含约5至约25重量％的一种或多种C 2和/或C 4 -C 12α-烯烃，并且具有大于约90％的三单元组立构规正度和小于约75J的熔解热 /G。 本发明还涉及用于形成熔喷非织造织物的方法，其包括形成MFR至少约25g / 10min的熔融丙烯基聚合物，形成包含基于丙烯的聚合物的纤维，并从 纤维。

    POLYPROPYLENE RESIN SUITABLE FOR FIBERS AND NONWOVENS
    3.
    发明申请
    POLYPROPYLENE RESIN SUITABLE FOR FIBERS AND NONWOVENS 审中-公开
    聚丙烯树脂适用于纤维和非织造布

    公开(公告)号：WO2005080497A1

    公开(公告)日：2005-09-01

    申请号：PCT/US2005/003936

    申请日：2005-02-07

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC. ,  CHENG, Chia, Yung ,  RICHESON, Galen, C.

    Inventor： CHENG, Chia, Yung ,  RICHESON, Galen, C.

    IPC: C08L23/10

    CPC classification number: D01F6/46 ,  C08L23/10 ,  C08L23/12 ,  C08L23/142 ,  C08L2205/02 ,  D04H1/4291 ,  D04H1/4382 ,  C08L2666/06 ,  C08L2666/04

    Abstract: A blended polypropylene composition, fiber, and nonwoven articles made therefrom are provided. In one aspect, the blended polypropylene composition comprises a first polymer component having a molecular weight distribution of from 2.5 to 8, and a second polymer component having a molecular weight distribution of from 1.8 to 3. The frst polymer component has a melt flow rate of greater than 30 g/10 min. and the second polymer component has a melt flow rate of less than 40 g/10 min., and the blended polypropylene composition has a melt flow rate of greater than 5 g/10 min.

    Abstract translation: 提供由其制成的共混聚丙烯组合物，纤维和非织造制品。 一方面，共混聚丙烯组合物包含分子量分布为2.5至8的第一聚合物组分和分子量分布为1.8至3的第二聚合物组分。第一聚合物组分的熔体流动速率为 大于30g / 10min。 并且第二聚合物组分具有小于40g / 10min的熔体流动速率，并且共混的聚丙烯组合物的熔体流动速率大于5g / 10min。

    POLYPROPYLENE SPUNBOND FIBERS
    6.
    发明申请
    POLYPROPYLENE SPUNBOND FIBERS 审中-公开
    聚丙烯弹性纤维

    公开(公告)号：WO2009058477A1

    公开(公告)日：2009-05-07

    申请号：PCT/US2008/075368

    申请日：2008-09-05

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC. ,  FERRY, William, M. ,  RICHESON, Galen, C.

    Inventor： FERRY, William, M. ,  RICHESON, Galen, C.

    IPC: D01F6/06 ,  D04H3/16

    CPC classification number: D01D5/0023 ,  D01D1/065 ,  D01D5/08 ,  D01F6/06 ,  D04H3/16 ,  D10B2321/022 ,  Y10T442/681

    Abstract: Disclosed herein is a spunbond fiber of visbroken polypropylene having an Mw/Mn of from 3.5 to 7.0, an Mz/Mw of from greater than 2.0 and a melt flow rate (230/2.16) of from 50 to 100 dg/min. Also disclosed is a process for producing spunbond fibers comprising melt blending a polypropylene having a melt flow rate (230/2.16) of from 10 to 30 dg/min with a peroxide visbreaker such that the resulting melt flow rate of the visbroken polypropylene is from 50 to 100 dg/min; melt extruding the visbroken polypropylene through a die block such that filaments of the visbroken polypropylene being produced are exposed to a cabin pressure of from 4500 to 7000 Pa; and forming fibers of from less than 6.0 denier. Nonwoven fabrics and multiple-layer structures can be made from the fibers described herein that are useful for filtering and absorption related articles.

    Abstract translation: 本文公开了具有3.5至7.0的Mw / Mn，大于2.0的Mz / Mw和50至100dg / min的熔体流动速率（230 / 2.16）的脱模聚丙烯的纺粘纤维。 还公开了一种生产纺粘纤维的方法，其包括将熔体流动速率（230 / 2.16）为10至30dg / min的聚丙烯与过氧化物破乳剂熔融共混，使得所得的抗坏裂聚丙烯的熔体流动速率为50 至100 dg / min; 通过模块将熔融挤出减枝裂纹的聚丙烯，使得生产的抗坏裂聚丙烯的长丝暴露于4500至7000Pa的客舱压力; 并形成小于6.0旦尼尔的纤维。 无纺织物和多层结构可以由本文所述的纤维制成，其可用于过滤和吸收相关物品。

    PELLETIZED POLYMER FOR NON-WOVEN FILTER ELEMENTS
    7.
    发明申请
    PELLETIZED POLYMER FOR NON-WOVEN FILTER ELEMENTS 审中-公开
    非过滤器元件的柔性聚合物

    公开(公告)号：WO2007126994A1

    公开(公告)日：2007-11-08

    申请号：PCT/US2007/007824

    申请日：2007-03-28

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC., A CORPORATION OF THE STATE OF DELAWARE ,  RICHESON, Galen, C. ,  WELLS, Bryan, G.

    Inventor： RICHESON, Galen, C. ,  WELLS, Bryan, G.

    IPC: C08F8/50 ,  C08J3/12 ,  B01D39/16

    CPC classification number: B01D39/1623 ,  B29B9/00 ,  B29B9/12 ,  B29B9/16 ,  C08F8/50 ,  C08K5/3435 ,  Y10T442/60 ,  C08F10/06 ,  C08L23/10

    Abstract: Provided is a propylene polymer composition comprising a neat polymer and a hydroxylamine ester compound suitable for preparing low melt viscosity polymers useful in spinning, melt blowing, extruding and the like. The polymer composition exhibits near-neat propylene polymer melt viscosity such that it can be readily pelletized for transport or use by an end user other than the composition manufacturer. Also provided are high quality non-woven fabrics and fabrics, particularly suitable for use as filter media, with superior filtration efficiencies and charge retention.

    Abstract translation: 本发明提供一种丙烯聚合物组合物，其包含纯聚合物和适于制备用于纺丝，熔喷，挤出等的低熔融粘度聚合物的羟胺酯化合物。 聚合物组合物表现出近纯丙烯聚合物的熔融粘度，使得其可以容易地造粒以供除组合物制造商之外的最终用户运输或使用。 还提供了高质量的无纺织物和织物，特别适合用作过滤介质，具有优良的过滤效率和电荷保持性。

    BICOMPONENT FIBERS AND METHODS FOR MAKING THEM
    8.
    发明申请
    BICOMPONENT FIBERS AND METHODS FOR MAKING THEM 审中-公开
    双色纤维及其制作方法

    公开(公告)号：WO2012064469A1

    公开(公告)日：2012-05-18

    申请号：PCT/US2011/056736

    申请日：2011-10-18

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC. ,  RICHESON, Galen, C. ,  WESTWOOD, Alistair, D. ,  MEHTA, Aspy, K.

    Inventor： RICHESON, Galen, C. ,  WESTWOOD, Alistair, D. ,  MEHTA, Aspy, K.

    IPC: D01D5/06 ,  D01F6/46 ,  D01F8/06

    CPC classification number: D01F8/06 ,  D01D5/0985 ,  D01D5/40 ,  D01F1/00 ,  D01F6/46 ,  Y10T428/2929 ,  Y10T442/3154

    Abstract: The present invention relates to bicomponent polymer fibers, and to processes for forming those fibers. Bicomponent polymer fibers are described, having a core comprising a core polymer and a sheath comprising a sheath polymer, wherein the sheath polymer is a polyolefm having an Mw less than about 65,000 g/mol. The core polymer has an Mw at least about 20,000 g/mol greater than the Mw of the sheath polymer. Processes for forming bicomponent fibers are also described, comprising (i) forming a molten blend of a core polymer and a sheath polymer; (ii) extruding the molten polymer blend using an extrusion die having a length to diameter ratio greater than or equal to about 10 and under shear conditions sufficient to drive the sheath polymer to the die wall; and (iii) forming meltblown fibers having a core comprising the core polymer and a sheath comprising the sheath polymer.

    Abstract translation: 本发明涉及双组分聚合物纤维，以及用于形成这些纤维的方法。 描述了双组分聚合物纤维，其具有包含芯聚合物和包含鞘聚合物的护套的芯，其中所述鞘聚合物是Mw小于约65,000g / mol的聚烯烃。 芯聚合物具有比鞘聚合物的Mw大至少约20,000g / mol的Mw。 还描述了用于形成双组分纤维的方法，其包括（i）形成芯聚合物和鞘聚合物的熔融共混物; （ii）使用长度至直径比大于或等于约10的挤出模头挤出熔融聚合物共混物，并且在足以将护套聚合物驱动到模具壁的剪切条件下; 和（iii）形成具有芯的熔喷纤维，所述芯包含芯聚合物和包含鞘聚合物的护套。

    NONWOVEN FABRICS MADE FROM POLYMER BLENDS AND METHODS FOR MAKING SAME
    9.
    发明申请
    NONWOVEN FABRICS MADE FROM POLYMER BLENDS AND METHODS FOR MAKING SAME 审中-公开
    聚合物混合物制成的非织造织物及其制造方法

    公开(公告)号：WO2011159400A1

    公开(公告)日：2011-12-22

    申请号：PCT/US2011/034967

    申请日：2011-05-03

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC. ,  RICHESON, Galen, C.

    Inventor： RICHESON, Galen, C.

    IPC: D01F6/46 ,  D01D5/098 ,  D04H1/56

    CPC classification number: D01F6/46 ,  D01D5/0985 ,  D04H1/541 ,  D04H1/56 ,  D04H13/00 ,  Y10T442/697

    Abstract: The present invention is directed to fabrics formed from the polymer blends. The polymer blends comprise from about 70 to about 99.9 wt%, based on the total weight of the composition, of a first propylene -based polymer and from about 0.1 to about 30 wt% of a second propylene based polymer. The first polymer has a melt flow rate of from about 100 to about 5,000 g/10 min, and the second polymer has a melt flow rate of from about 1 to about 500 g/min, and the second polymer has either a lower melt flow rate or a higher triad tacticity than the first polymer.

    Abstract translation: 本发明涉及由聚合物共混物形成的织物。 基于组合物的总重量，聚合物共混物包含约70至约99.9重量％的第一丙烯基聚合物和约0.1至约30重量％的第二丙烯基聚合物。 第一聚合物的熔体流动速率为约100至约5,000g / 10min，第二聚合物的熔体流动速率为约1至约500g / min，第二聚合物具有较低的熔体流动 速率或高于第一聚合物的三单元组立构规整度。

    BICOMPONENT FIBERS AND METHODS FOR MAKING THEM
    10.
    发明申请
    BICOMPONENT FIBERS AND METHODS FOR MAKING THEM 审中-公开
    双组分纤维及其制备方法

    公开(公告)号：WO2012064469A8

    公开(公告)日：2012-09-20

    申请号：PCT/US2011056736

    申请日：2011-10-18

    Applicant: EXXONMOBIL CHEM PATENTS INC ,  RICHESON GALEN C ,  WESTWOOD ALISTAIR D ,  MEHTA ASPY K

    Inventor： RICHESON GALEN C ,  WESTWOOD ALISTAIR D ,  MEHTA ASPY K

    IPC: D01D5/06 ,  D01F6/46 ,  D01F8/06

    CPC classification number: D01F8/06 ,  D01D5/0985 ,  D01D5/40 ,  D01F1/00 ,  D01F6/46 ,  Y10T428/2929 ,  Y10T442/3154

    Abstract: The present invention relates to bicomponent polymer fibers, and to processes for forming those fibers. Bicomponent polymer fibers are described, having a core comprising a core polymer and a sheath comprising a sheath polymer, wherein the sheath polymer is a polyolefm having an Mw less than about 65,000 g/mol. The core polymer has an Mw at least about 20,000 g/mol greater than the Mw of the sheath polymer. Processes for forming bicomponent fibers are also described, comprising (i) forming a molten blend of a core polymer and a sheath polymer; (ii) extruding the molten polymer blend using an extrusion die having a length to diameter ratio greater than or equal to about 10 and under shear conditions sufficient to drive the sheath polymer to the die wall; and (iii) forming meltblown fibers having a core comprising the core polymer and a sheath comprising the sheath polymer.

    Abstract translation: 本发明涉及双组分聚合物纤维，以及形成这些纤维的方法。 描述了双组分聚合物纤维，其具有包含芯聚合物的芯和包含鞘聚合物的鞘，其中鞘聚合物是Mw小于约65,000g / mol的聚烯烃。 芯聚合物具有比鞘聚合物的Mw大至少约20,000g / mol的Mw。 还描述了用于形成双组分纤维的方法，其包括（i）形成芯聚合物和鞘聚合物的熔融共混物; （ii）使用长度与直径之比大于或等于约10的挤出模具并在足以将鞘聚合物驱动到模壁的剪切条件下挤出熔融聚合物共混物; 和（iii）形成具有包含芯聚合物的芯和包含鞘聚合物的包壳的熔喷纤维。

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