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公开(公告)号：US08710148B2
公开(公告)日：2014-04-29
申请号：US13310146
申请日：2011-12-02
CPC分类号： C08L23/14 , A61L15/26 , C08F4/65908 , C08F4/65927 , C08F210/06 , C08L23/10 , C08L23/142 , C08L2205/025 , C08L2308/00 , D04H3/007 , D04H3/16 , Y10T442/601
摘要： Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 α-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.
摘要翻译： 提供了丙烯类聚合物组合物，其包括丙烯和约5重量％至约20重量％的一种或多种C 2和/或C 4 -C 12α-烯烃。 聚合物组合物的三单元组立构规整度大于约90％，熔融热小于约75J / g，熔体流动速率（MFR）大于或等于约25g / 10min（230℃， 2.16公斤）。 此外，聚合物组合物是包含第一聚合物和第二聚合物的反应器共混物的反应器级组合物，优选地，使用相同的催化剂体系制备第一和第二聚合物。 还提供了包含这种聚合物组合物的熔喷非织造织物，例如熔喷或纺粘织物，以及用于形成无纺织物的方法。
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公开(公告)号：US20130143461A1
公开(公告)日：2013-06-06
申请号：US13310146
申请日：2011-12-02
CPC分类号： C08L23/14 , A61L15/26 , C08F4/65908 , C08F4/65927 , C08F210/06 , C08L23/10 , C08L23/142 , C08L2205/025 , C08L2308/00 , D04H3/007 , D04H3/16 , Y10T442/601
摘要： Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 α-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.
摘要翻译： 提供了基于丙烯的聚合物组合物，其包含丙烯和约5重量％至约20重量％的一种或多种C 2和/或C 4 -C 12α-烯烃。 聚合物组合物的三单元组立构规整度大于约90％，熔融热小于约75J / g，熔体流动速率（MFR）大于或等于约25g / 10min（230℃， 2.16公斤）。 此外，聚合物组合物是包含第一聚合物和第二聚合物的反应器共混物的反应器级组合物，优选地，使用相同的催化剂体系制备第一和第二聚合物。 还提供了包含这种聚合物组合物的熔喷非织造织物，例如熔喷或纺粘织物，以及用于形成无纺织物的方法。
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公开(公告)号：US06809168B2
公开(公告)日：2004-10-26
申请号：US10406036
申请日：2003-04-02
申请人： Pawan Kumar Agarwal , Weiqing Weng , Aspy K. Mehta , Armenag H. Dekmezian , Main Chang , Rajan K. Chudgar , Olivier Jean Georjon , Chon-Yie Lin , Michael C. Chen , Galen C. Richeson , Palanisamy Arjunan
发明人： Pawan Kumar Agarwal , Weiqing Weng , Aspy K. Mehta , Armenag H. Dekmezian , Main Chang , Rajan K. Chudgar , Olivier Jean Georjon , Chon-Yie Lin , Michael C. Chen , Galen C. Richeson , Palanisamy Arjunan
IPC分类号： C08F23620
CPC分类号： C08F4/65927 , C08F4/65908 , C08F4/65912 , C08F4/65916 , C08F110/06 , C08F210/06 , C08L23/14 , C08L23/145 , C08L23/16 , C08L2666/04 , C08F236/20 , C08F2500/12 , C08F2500/03 , C08F2500/04 , C08F2500/26
摘要： The co-polymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations. Desirably, the melting point range of one of the crystalline populations is distinguishable from the melting point range of another crystalline population by a temperature range of from 1° C. to 8° C. More desirably, one of the crystalline populations has a melting point in the range from 152° C. to 158° C. and another crystalline population has a melting point in the range from 142° C. to 148° C.
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公开(公告)号：US20120123374A1
公开(公告)日：2012-05-17
申请号：US13276035
申请日：2011-10-18
CPC分类号： 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
摘要： 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-C12 α-olefins 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.
摘要翻译： 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。 另外，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％的三单元立构规整度和小于约75J的熔融热 /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。
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公开(公告)号：US5891814A
公开(公告)日：1999-04-06
申请号：US800436
申请日：1997-02-18
IPC分类号： C08F4/642 , C08F4/6592 , C08F8/00 , C08F10/00 , C08L23/12 , D01F6/06 , D03D15/00 , D04H1/54 , D04H1/56 , D04H3/16
CPC分类号： C08L23/12 , D01F6/06 , D04H1/4291 , D04H1/56 , D04H3/007 , D04H3/16 , Y10S242/918 , Y10T428/26 , Y10T428/29 , Y10T428/2907 , Y10T428/2913 , Y10T428/2915 , Y10T428/2964 , Y10T428/2967 , Y10T428/2969 , Y10T428/298 , Y10T442/20 , Y10T442/30 , Y10T442/40 , Y10T442/68 , Y10T442/681
摘要： This invention relates to improved polypropylene nonwoven fabrics. The fabrics are made from isotactic polypropylene which has been produced with a catalyst systems comprising at least two metallocenes. These nonwoven fabrics, particularly when prepared using a spunbonding process, exhibit significantly improved strength without significant sacrifice of other favorable properties.
摘要翻译： 本发明涉及改进的聚丙烯无纺织物。 织物由具有包含至少两种金属茂的催化剂体系生产的全同立构聚丙烯制成。 这些非织造织物，特别是当使用纺粘法制备时，表现出显着提高的强度，而不会显着牺牲其它有利的性能。
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公开(公告)号：US09212432B2
公开(公告)日：2015-12-15
申请号：US12678626
申请日：2008-09-05
CPC分类号： D01D5/0023 , D01D1/065 , D01D5/08 , D01F6/06 , D04H3/16 , D10B2321/022 , Y10T442/681
摘要： 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.
摘要翻译： 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。
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7.发明申请Elastic Nonwoven Materials Comprising Propylene-Based and Ethylene-Based Polymers 审中-公开弹性非织造材料，包括丙烯基和乙烯基聚合物公开(公告)号：US20120329351A1
公开(公告)日：2012-12-27
申请号：US13486643
申请日：2012-06-01
CPC分类号： D04H1/00 , C08F210/06 , C08F210/16 , D01F6/30 , D01F6/46 , D04H3/00 , Y10T442/601 , C08F2500/11 , C08F2500/12 , C08F2500/15 , C08F2500/18 , C08F2500/20 , C08F2500/23
摘要： The present invention relates to elastic nonwoven materials comprising an elastic layer formed from a polymer blend comprising a propylene-based polymer and a minor amount of an ethylene-based polymer. The propylene-based polymer may comprise from about 75 to about 95 wt % propylene and from about 5 to about 25 wt % ethylene and/or a C4-C12 α-olefin, and may have a triad tacticity greater than about 90% and a heat of fusion less than about 75 J/g. The ethylene-based polymer may comprise from about 65 to about 100 wt % ethylene and from 0 to about 35 wt % of one or more C3-C12 α-olefins.
摘要翻译： 本发明涉及弹性非织造材料，其包括由包含丙烯类聚合物和少量基于乙烯的聚合物的聚合物共混物形成的弹性层。 基于丙烯的聚合物可以包含约75至约95重量％的丙烯和约5至约25重量％的乙烯和/或C 4 -C 12α-烯烃，并且可以具有大于约90％的三单元组立构规律度和 熔化热小于约75J / g。 基于乙烯的聚合物可以包含约65至约100重量％的乙烯和0至约35重量％的一种或多种C 3 -C 12α-烯烃。
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公开(公告)号：US09498932B2
公开(公告)日：2016-11-22
申请号：US12894955
申请日：2010-09-30
IPC分类号： B32B5/26 , B32B5/06 , D01F6/30 , B32B5/04 , B32B5/08 , D01D5/098 , D04H3/12 , D04H3/14 , D04H3/16 , B32B5/02 , B32B5/22
CPC分类号： B32B5/26 , B32B5/022 , B32B5/04 , B32B5/06 , B32B5/08 , B32B5/22 , B32B2250/20 , B32B2262/0207 , B32B2262/0253 , B32B2262/14 , B32B2307/51 , B32B2307/718 , B32B2437/00 , B32B2555/00 , B32B2555/02 , D01D5/0985 , D01F6/30 , D04H3/12 , D04H3/14 , D04H3/16 , Y10T428/24942 , Y10T442/659
摘要： Multilayer meltblown composites, articles made therefrom, and methods for making same. One method can include meltblowing a first material to form a first meltblown layer; meltblowing a second material to form a second meltblown layer; and meltblowing a third material to form a third meltblown layer, wherein each material is the same or different, each material includes at least one resin having a MFR of about 2,000 dg/min or less, as measured by ASTM D1238, 2.16 kg, 230° C., and at least one of the first, second, and third materials comprises an elastomer having a recovery of at least 70% after 100% deformation, as determined by ASTM D412.
摘要翻译： 多层熔喷复合材料，由其制成的制品及其制造方法。 一种方法可以包括熔喷第一种材料以形成第一熔喷层; 熔化第二材料以形成第二熔喷层; 并且吹制第三材料以形成第三熔喷层，其中每种材料相同或不同，每种材料包括至少一种具有约2,000dg / min或更低的MFR的树脂，如ASTM D1238,2.16kg，230 ℃，并且第一，第二和第三材料中的至少一种材料包括按照ASTM D412测定的在100％变形后具有至少70％回收率的弹性体。
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公开(公告)号：US20110081529A1
公开(公告)日：2011-04-07
申请号：US12894955
申请日：2010-09-30
CPC分类号： B32B5/26 , B32B5/022 , B32B5/04 , B32B5/06 , B32B5/08 , B32B5/22 , B32B2250/20 , B32B2262/0207 , B32B2262/0253 , B32B2262/14 , B32B2307/51 , B32B2307/718 , B32B2437/00 , B32B2555/00 , B32B2555/02 , D01D5/0985 , D01F6/30 , D04H3/12 , D04H3/14 , D04H3/16 , Y10T428/24942 , Y10T442/659
摘要： Multilayer meltblown composites, articles made therefrom, and methods for making same. One method can include meltblowing a first material to form a first meltblown layer; meltblowing a second material to form a second meltblown layer; and meltblowing a third material to form a third meltblown layer, wherein each material is the same or different, each material includes at least one resin having a MFR of about 2,000 dg/min or less, as measured by ASTM D1238, 2.16 kg, 230° C., and at least one of the first, second, and third materials comprises an elastomer having a recovery of at least 70% after 100% deformation, as determined by ASTM D412.
摘要翻译： 多层熔喷复合材料，由其制成的制品及其制造方法。 一种方法可以包括熔喷第一种材料以形成第一熔喷层; 熔化第二材料以形成第二熔喷层; 并且吹制第三材料以形成第三熔喷层，其中每种材料相同或不同，每种材料包括至少一种具有约2,000dg / min或更低的MFR的树脂，如ASTM D1238,2.16kg，230 ℃，并且第一，第二和第三材料中的至少一种材料包括按照ASTM D412测定的在100％变形后具有至少70％回收率的弹性体。
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公开(公告)号：US20100233928A1
公开(公告)日：2010-09-16
申请号：US12678626
申请日：2008-09-05
IPC分类号： D04H3/16 , B29C47/00 , C08F110/06 , C08L23/12
CPC分类号： D01D5/0023 , D01D1/065 , D01D5/08 , D01F6/06 , D04H3/16 , D10B2321/022 , Y10T442/681
摘要： 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.
摘要翻译： 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。
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