Biaxially-Oriented Metallocene-Based Polypropylene Films Having Reduced Thickness
    1.
    发明申请
    Biaxially-Oriented Metallocene-Based Polypropylene Films Having Reduced Thickness 失效
    双轴取向的茂金属基聚丙烯薄膜具有减小的厚度

    公开(公告)号:US20090072432A1

    公开(公告)日:2009-03-19

    申请号:US12277619

    申请日:2008-11-25

    Inventor: SCOTT D. COOPER

    Abstract: A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The film has a permeability to water vapor of less than about 2.5 g/m2day/25 μm and a permeability to oxygen of less than about 2200 cc/m2day/25 μm. The film also has a haze properties of less than about 1%. The polypropylene contains 0.1 to 1% 2,1 insertions and has an isotacticity of at least 96% meso pentads. The isotactic polypropylene thus produced is then extruded into a sheet that is biaxially-oriented by stressing the sheet in the transverse and longitudinal directions to a draw ratio of at least about 6:1 in the transverse direction, and at least about 4:1 in the longitudinal direction.

    Abstract translation: 由全同立构聚丙烯的双轴取向聚丙烯膜形成厚度为10微米或更小并且对水蒸汽和氧气均具有改善的阻挡特性的聚合物膜。 聚丙烯通过丙烯在异相茂金属催化剂存在下的聚合制备。 该膜具有小于约2.5g / m 2·日/ 25mum的水蒸气渗透性,小于约2200cc / m 2·日/ 25mum的氧气渗透性。 该膜还具有小于约1%的雾度特性。 聚丙烯含有0.1至1%的2,1插入并且具有至少96%的内消旋五单元组的全同立构规整度。 然后将如此制备的全同立构聚丙烯挤压成双轴取向的片材,该片材沿横向和纵向施加片材的横向拉伸比至少约6:1,并且至少约4:1 纵向。

    Biaxially-oriented metallocene-based polypropylene films having reduced thickness
    2.
    发明申请
    Biaxially-oriented metallocene-based polypropylene films having reduced thickness 失效
    双轴取向金属茂基聚丙烯薄膜,厚度减小

    公开(公告)号:US20080177018A1

    公开(公告)日:2008-07-24

    申请号:US11656247

    申请日:2007-01-22

    Inventor: Scott D. Cooper

    Abstract: A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The film has a permeability to water vapor of less than about 2.5 g/m2day/25 μm and a permeability to oxygen of less than about 2200 cc/m2day/25 μm. The film also has a haze properties of less than about 1%. The polypropylene contains 0.1 to 1% 2,1 insertions and has an isotacticity of at least 96% meso pentads. The isotactic polypropylene thus produced is then extruded into a sheet that is biaxially-oriented by stressing the sheet in the transverse and longitudinal directions to a draw ratio of at least about 6:1 in the transverse direction, and at least about 4:1 in the longitudinal direction.

    Abstract translation: 由全同立构聚丙烯的双轴取向聚丙烯膜形成厚度为10微米或更小并且对水蒸汽和氧气均具有改善的阻挡特性的聚合物膜。 聚丙烯通过丙烯在异相茂金属催化剂存在下的聚合制备。 该膜具有小于约2.5g / m 2 /天/25μm的水蒸气渗透性,并且对氧的渗透性小于约2200cc / m 2日 / 25妈妈。 该膜还具有小于约1%的雾度特性。 聚丙烯含有0.1至1%的2,1插入并且具有至少96%的内消旋五单元组的全同立构规整度。 然后将如此制备的全同立构聚丙烯挤压成双轴取向的片材,该片材沿横向和纵向施加片材的横向拉伸比至少约6:1,并且至少约4:1 纵向。

    Polymerization process
    3.
    发明授权
    Polymerization process 失效
    聚合过程

    公开(公告)号:US06723769B2

    公开(公告)日:2004-04-20

    申请号:US10112561

    申请日:2002-03-28

    Abstract: A process for the production and treatment of a stereoregular propylene polymer such as isotactic polypropylene. The isotactic polypropylene can be produced by catalysis employing a metallocene catalyst or employing a Ziegler-Natta catalyst. A polymerization reactor is operated to provide for the reaction of propylene supplied to the reactor to produce a stereoregular propylene polymer fluff. A product stream containing unreacted propylene and the propylene polymer fluff is withdrawn from the polymerization reactor. The product stream is treated to separate at least a portion of the unreacted propylene from the product stream. The polymer fluff is heated to a temperature sufficient to melt the propylene polymer. Incorporated into the propylene polymer fluff in an amount within the range of 0.01-0.08 wt. % is a tertiary amine formula: wherein R is an aliphatic group containing 8-18 carbon atoms and R′ and R″ are each independently a hydroxyalkyl group containing from 1 to 3 carbon atoms. Thereafter, the heated polymer fluff containing the tertiary amine is extruded to produce particles of the propylene polymer.

    Abstract translation: 一种制备和处理立体规则丙烯聚合物如全同立构聚丙烯的方法。 全同立构聚丙烯可以通过使用茂金属催化剂或采用齐格勒 - 纳塔催化剂进行催化来制备。 操作聚合反应器以提供供应到反应器的丙烯的反应以产生立体规则的丙烯聚合物绒毛。 将含有未反应的丙烯和丙烯聚合物绒毛的产物流从聚合反应器中取出。 处理产物流以从产物流中分离出至少一部分未反应的丙烯。 将聚合物绒毛加热至足以熔化丙烯聚合物的温度。 掺入丙烯聚合物绒毛中的量在0.01-0.08重量%的范围内。 %是叔胺配方:其中R是含有8-18个碳原子的脂族基团,R'和R“各自独立地是含有1至3个碳原子的羟烷基。 此后,挤出含有叔胺的加热的聚合物绒毛以产生丙烯聚合物的颗粒。

    Biaxially-oriented metallocene-based polypropylene films having reduced thickness
    4.
    发明授权
    Biaxially-oriented metallocene-based polypropylene films having reduced thickness 失效
    双轴取向金属茂基聚丙烯薄膜,厚度减小

    公开(公告)号:US07473751B2

    公开(公告)日:2009-01-06

    申请号:US11656247

    申请日:2007-01-22

    Inventor: Scott D. Cooper

    Abstract: A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The film has a permeability to water vapor of less than about 2.5 g/m2day/25 μm and a permeability to oxygen of less than about 2200 cc/m2day/25 μm. The film also has a haze properties of less than about 1%. The polypropylene contains 0.1 to 1% 2,1 insertions and has an isotacticity of at least 96% meso pentads. The isotactic polypropylene thus produced is then extruded into a sheet that is biaxially-oriented by stressing the sheet in the transverse and longitudinal directions to a draw ratio of at least about 6:1 in the transverse direction, and at least about 4:1 in the longitudinal direction.

    Abstract translation: 由全同立构聚丙烯的双轴取向聚丙烯膜形成厚度为10微米或更小并且对水蒸汽和氧气均具有改善的阻挡特性的聚合物膜。 聚丙烯通过丙烯在异相茂金属催化剂存在下的聚合制备。 该膜具有小于约2.5g / m 2·日/ 25mum的水蒸气渗透性,小于约2200cc / m 2·日/ 25mum的氧气渗透性。 该膜还具有小于约1%的雾度特性。 聚丙烯含有0.1至1%的2,1插入并且具有至少96%的内消旋五单元组的全同立构规整度。 然后将如此制备的全同立构聚丙烯挤压成双轴取向的片材,该片材沿横向和纵向施加片材的横向拉伸比至少约6:1,并且至少约4:1 纵向。

    Process of making polypropylene fibers
    5.
    发明授权
    Process of making polypropylene fibers 失效
    制造聚丙烯纤维的工艺

    公开(公告)号:US06878327B2

    公开(公告)日:2005-04-12

    申请号:US10126316

    申请日:2002-04-19

    CPC classification number: D01F6/06

    Abstract: A method for the production of polypropylene fibers from a propylene polymer including isotactic polypropylene produced by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The polymer is heated to a molten state and extruded to form a fiber preform at a temperature within the range of about 170°-210° C. The fiber preform is spun at a spinning speed of at least 200 meters per minute and quenched at a heat transfer rate of no more than 12 joules per second fiber. The spun fiber is then subjected to a winding operation. The fiber may be drawn subsequent to the quenching operation and prior to winding. The cooled fiber preform may be drawn to produce a fiber at a draw ratio within the range of about 1.5-4.0 with shrinkage of the fiber over the range of the draw ratio at a variance of ±25% of the median of the shrinkage factor over the draw ratio.

    Abstract translation: 一种由丙烯聚合物生产聚丙烯纤维的方法,包括通过在特殊的茂金属催化剂存在下聚合丙烯生产的全同立构聚丙烯。 将聚合物加热至熔融状态并挤出以在约170℃-210℃的温度范围内形成纤维预制件。以至少200米/分钟的纺丝速度纺出纤维预制件,并在 传热速率不超过12焦耳/秒纤维。 然后将纺丝纤维进行卷绕操作。 纤维可以在淬火操作之后并且在卷绕之前被拉伸。 可以将冷却的纤维预成型件拉伸以在拉伸比为约1.5-4.0的范围内制造纤维,其中在拉伸比的范围内纤维的收缩率在收缩率的中值的±25%的变化范围以上 拉伸比。

    Polypropylene fibers
    6.
    发明授权
    Polypropylene fibers 有权
    聚丙烯纤维

    公开(公告)号:US06824721B2

    公开(公告)日:2004-11-30

    申请号:US10112798

    申请日:2002-03-29

    CPC classification number: D01F6/30

    Abstract: Process for the production of fibers formed from an ethylene-propylene copolymer characterized as a random copolymer of ethylene and isotactic polypropylene having a random ethylene content within the range of 2-12 mole %. The propylene content of the copolymer can have an isotacticity of at least 90% meso diads. The copolymer is heated to a molten state and then extruded to form a fiber preform. The fiber preform is subject to a spinning speed of at least 500 meters per minute. This is followed by drawing the spun fiber preform at a draw ratio within the range of 1:1-6:1 to produce a continuous fiber of the ethylene-propylene copolymer. A specific ethylene-propylene copolymer has an ethylene content within the range of 6-8%.

    Abstract translation: 用于生产由乙烯 - 丙烯共聚物形成的纤维的方法,其特征在于乙烯和无规乙烯含量在2-12摩尔%范围内的全同立构聚丙烯的无规共聚物。 共聚物的丙烯含量可以具有至少90%的内消旋二胺的全同立构规整度。 将共聚物加热至熔融状态,然后挤出以形成纤维预制件。 纤维预制件受到至少500米/分钟的纺丝速度。 然后以1:1-6:1的拉伸比拉伸纺丝纤维预成型件,得到乙烯 - 丙烯共聚物的连续纤维。 特定的乙烯 - 丙烯共聚物的乙烯含量在6-8%的范围内。

    Biaxially-oriented metallocene-based polypropylene films having reduced thickness
    7.
    发明授权
    Biaxially-oriented metallocene-based polypropylene films having reduced thickness 失效
    双轴取向金属茂基聚丙烯薄膜,厚度减小

    公开(公告)号:US07658875B2

    公开(公告)日:2010-02-09

    申请号:US12277619

    申请日:2008-11-25

    Inventor: Scott D. Cooper

    Abstract: A polymer film having a thickness of 10 microns or less and improved barrier characteristics to both water vapor and oxygen is formed from a biaxially-oriented polypropylene film of isotactic polypropylene. The polypropylene is prepared by the polymerization of propylene in the presence of an isospecific metallocene catalyst. The film has a permeability to water vapor of less than about 2.5 g/m2 day/25 μm and a permeability to oxygen of less than about 2200 cc/m2 day/25 μm. The film also has a haze properties of less than about 1%. The polypropylene contains 0.1 to 1% 2,1 insertions and has an isotacticity of at least 96% meso pentads. The isotactic polypropylene thus produced is then extruded into a sheet that is biaxially-oriented by stressing the sheet in the transverse and longitudinal directions to a draw ratio of at least about 6:1 in the transverse direction, and at least about 4:1 in the longitudinal direction.

    Abstract translation: 由全同立构聚丙烯的双轴取向聚丙烯膜形成厚度为10微米或更小并且对水蒸汽和氧气均具有改善的阻挡特性的聚合物膜。 聚丙烯通过丙烯在异相茂金属催化剂存在下的聚合制备。 该膜具有小于约2.5g / m 2日/ 25mum的水蒸气渗透性,小于约2200cc / m2 / 25mil的氧气渗透性。 该膜还具有小于约1%的雾度特性。 聚丙烯含有0.1至1%的2,1插入并且具有至少96%的内消旋五单元组的全同立构规整度。 然后将如此制备的全同立构聚丙烯挤压成双轴取向的片材,该片材沿横向和纵向施加片材的横向拉伸比至少约6:1,并且至少约4:1 纵向。

Patent Agency Ranking