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14 条记录 (耗时 0.036 秒)

    Rheology modification of low density polyethylene
    3.
    发明授权
    Rheology modification of low density polyethylene 有权
    低密度聚乙烯的流变改性

    公开(公告)号：US06521306B1

    公开(公告)日：2003-02-18

    申请号：US09129163

    申请日：1998-08-05

    申请人： Wendy D. Hoenig ,  Teresa Karjala ,  Li-Min Tau ,  Clark H. Cummins ,  Michael J. Mullins ,  H. Craig Silvis ,  Thoi H. Ho

    发明人： Wendy D. Hoenig ,  Teresa Karjala ,  Li-Min Tau ,  Clark H. Cummins ,  Michael J. Mullins ,  H. Craig Silvis ,  Thoi H. Ho

    IPC分类号： B29D2200

    CPC分类号： C08L23/02 ,  C08G81/02 ,  C08K5/43 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L23/0838 ,  C08L23/0853 ,  C08L23/16 ,  C08L2205/22 ,  C08L2312/00 ,  C08L2314/06 ,  Y10T428/1334 ,  Y10T428/1352 ,  Y10T428/1386 ,  Y10T428/139 ,  Y10T428/31913 ,  Y10T428/31917 ,  C08L2666/04

    摘要： The invention includes a process of preparing a coupled polymer characterized by heating an admixture containing (1) at least one ethylene polymer or blend of ethylene polymers having a density of at least about 0.89 g/mL and less than about 0.935 g/mL and a comonomer content between about 0.5 and 50 weight percent of an alpha olefin having greater than 2 and less than 20 carbon atoms per molecule and (2) a coupling amount of at least one poly(sulfonyl azide) to at least the decomposition temperature of the poly(sulfonyl azide) for a period sufficient for decomposition of at least about 80 weight percent of the poly(sulfonyl azide) and sufficient to result in a coupled polymer. The amount of poly(sulfonyl azide) is preferably from about 0.01 to about 5 weight percent of polymers in the admixture. The invention also includes any composition which is the product of any of the processes of the invention and articles made from those compositions, particularly any film of any composition of the invention. Additionally the invention includes a use of any composition of the invention in a process of blowing, casting or calendaring a film. More particularly the invention includes articles of compositions of the invention which are trash bags, agricultural films, construction films, or geomembranes, grocery sacks, sealant layers, tie layers, produce bags, garment bags, shipping sacks, medical films, stretch films, shrink films, agricultural films, greenhouse films, construction films, or stretch hooders.

    摘要翻译： 本发明包括一种制备偶联聚合物的方法，其特征在于加热含有（1）至少一种乙烯聚合物或密度为至少约0.89g / mL且小于约0.935g / mL的乙烯聚合物的共混物的混合物， 共聚单体含量为约0.5至50重量％的每分子具有大于2个且小于20个碳原子的α-烯烃，和（2）至少一个聚（磺酰基叠氮化物）的偶联量至少达到聚 （磺酰基叠氮化物）足以分解至少约80重量％的聚（磺酰基叠氮化物）并足够导致偶联聚合物的时间。 聚（磺酰基叠氮化物）的量优选为混合物中约0.01至约5重量％的聚合物。 本发明还包括任何组合物，其是本发明任何方法的产物和由这些组合物制成的制品，特别是本发明任何组合物的任何薄膜。 此外，本发明包括在吹塑，浇铸或压延膜的方法中使用本发明的任何组合物。 更具体地，本发明包括本发明的制品，其为垃圾袋，农用膜，建筑膜或土工膜，杂货袋，密封剂层，连接层，生产袋，服装袋，运输袋，医疗膜，拉伸膜，收缩 电影，农膜，温室膜，建筑膜或拉伸罩。

    Rheology modification of polymers prepared using metallocenes
    5.
    发明授权
    Rheology modification of polymers prepared using metallocenes 有权
    使用金属茂制备的聚合物的流变改性

    公开(公告)号：US06528136B1

    公开(公告)日：2003-03-04

    申请号：US09140603

    申请日：1998-08-26

    申请人： Thoi H. Ho ,  Wendy D. Hoenig ,  Che-I Kao ,  Michael E. Rowland ,  Clark H. Cummins ,  Michael J. Mullins ,  H. Craig Silvis

    发明人： Thoi H. Ho ,  Wendy D. Hoenig ,  Che-I Kao ,  Michael E. Rowland ,  Clark H. Cummins ,  Michael J. Mullins ,  H. Craig Silvis

    IPC分类号： B29D2200

    CPC分类号： C08L23/02 ,  C08G81/02 ,  C08K5/43 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L23/0838 ,  C08L23/0853 ,  C08L23/16 ,  C08L2205/22 ,  C08L2312/00 ,  C08L2314/06 ,  Y10T428/1334 ,  Y10T428/1352 ,  Y10T428/1386 ,  Y10T428/139 ,  Y10T428/31913 ,  Y10T428/31917 ,  C08L2666/04

    摘要： The invention includes a process of preparing a coupled polymer comprising heating an admixture containing (1) at least one polyolefin comprising ethylene and optionally at least one comonomer which is selected from alpha olefins having at least 3 carbon atoms, dienes and combinations thereof said polyolefin having a molecular weight distribution of less than or equal to about 3 and (2) a coupling amount at least one poly(sulfonyl azide) to at least the decomposition temperature of the poly(sulfonyl azide) for a period sufficient for decomposition of at least about 80 weight percent of the poly(sulfonyl azide) and sufficient to result in a coupled polymer; particularly where the polyolefin is the product of polymerization of ethylene and optionally at least one other alpha-olefin in the presence of a single site catalyst (transition metal like Va or Cr, metallocene or constrained geometry). The amount of poly(sulfonyl azide) is preferably from about 0.01 to about 5 weight percent of the polyolefin. The poly(sulfonyl azide)and polyolefin preferably react at a temperature at least the decomposition temperature and greater than about 150° C. The invention also includes any composition made by the process of the invention and any article made from the composition as well as processes for making the articles, particularly melt processing (especially where the article is formed from a melt of a composition of the invention), more preferably selected by molding, blow molding or extrusion blow molding the composition. The invention also includes the use of a composition of the invention in any of these processes.

    摘要翻译： 本发明包括一种制备偶联聚合物的方法，包括加热含有（1）至少一种包含乙烯和任选至少一种选自具有至少3个碳原子的α-烯烃的共聚单体的聚烯烃，二烯及其组合的混合物的混合物，所述聚烯烃具有 小于或等于约3的分子量分布和（2）偶联量至少一种聚（磺酰基叠氮化物）至少达到聚（磺酰基叠氮化物）的分解温度足够分解至少约 80重量％的聚（磺酰基叠氮化物）并且足以产生偶联的聚合物; 特别是当聚烯烃是在单中心催化剂（过渡金属如Va或Cr，金属茂或约束几何形式）存在下乙烯和任选的至少一种其它α-烯烃聚合的产物时。 聚（磺酰基叠氮化物）的量优选为聚烯烃的约0.01至约5重量％。 聚（磺酰基叠氮化物）和聚烯烃优选在至少分解温度和大于约150℃的温度下进行反应。本发明还包括通过本发明的方法制备的任何组合物和由组合物制成的任何制品以及工艺 用于制造制品，特别是熔融加工（特别是在由本发明的组合物的熔体形成制品的情况下），更优选通过模制，吹塑或挤出吹塑该组合物来选择。 本发明还包括在任何这些方法中使用本发明的组合物。

    Process of rheology modification of polymers
    9.
    发明授权
    Process of rheology modification of polymers 有权
    聚合物流变改性工艺

    公开(公告)号：US06552129B2

    公开(公告)日：2003-04-22

    申请号：US10013152

    申请日：2001-12-10

    申请人： David A. Babb ,  Che-I Kao ,  Wendy D. Hoenig ,  Michael E. Rowland ,  Clark H. Cummins ,  H. Craig Silvis ,  Michael J. Mullins ,  Thoi H. Ho

    发明人： David A. Babb ,  Che-I Kao ,  Wendy D. Hoenig ,  Michael E. Rowland ,  Clark H. Cummins ,  H. Craig Silvis ,  Michael J. Mullins ,  Thoi H. Ho

    IPC分类号： C08F800

    CPC分类号： C08L23/02 ,  C08G81/02 ,  C08K5/43 ,  C08L23/04 ,  C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L23/0838 ,  C08L23/0853 ,  C08L23/16 ,  C08L2205/22 ,  C08L2312/00 ,  C08L2314/06 ,  Y10T428/1334 ,  Y10T428/1352 ,  Y10T428/1386 ,  Y10T428/139 ,  Y10T428/31913 ,  Y10T428/31917 ,  C08L2666/04

    摘要： The invention includes a process of reacting a poly(sulfonyl azide) with a polymer comprising steps (a) forming a first admixture of a first amount of a first polymer or in a liquid which does not require removal from the polymer and a poly(sulfonyl azide); (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer; and (c) heating the second admixture at least to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains. The invention further includes all compositions obtainable by processes of the invention as well as blends of those compositions with one or more polymers of compositions different from the first or second polymer or the product of a process of the invention. Additionally the invention includes articles made from compositions of the invention, and shaping those articles particularly by processes which comprise shaping the compositions in a melted state into an article, more preferably when the process comprises thermoforming, injection molding, extrusion, casting, blow molding, foaming or blowing as well as the use of the compositions in those processes.

    摘要翻译： 本发明包括使聚（磺酰基叠氮化物）与聚合物反应的方法，包括步骤（a）形成第一量的第一聚合物的第一混合物或不需要从聚合物中除去的液体和聚（磺酰基 叠氮化物）; （b）然后形成第一混合物与第二量的至少一种第二聚合物的第二混合物; 和（c）至少加热第二混合物至偶联剂的分解温度足以导致聚合物链偶联的时间。 本发明还包括可通过本发明的方法获得的所有组合物以及这些组合物与一种或多种不同于第一或第二聚合物或本发明方法的产物的组合物的一种或多种聚合物的共混物。 另外，本发明包括由本发明的组合物制成的制品，特别是通过包括将熔融状态的组合物成型成制品的方法成型，更优选当该方法包括热成型，注射成型，挤出，铸造，吹塑成型， 发泡或吹塑以及在这些方法中使用组合物。