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公开(公告)号：US07172816B2
公开(公告)日：2007-02-06
申请号：US11135882
申请日：2005-05-24
IPC分类号： C08F210/16 , C08F4/64
CPC分类号： C08F10/00 , B29C47/0021 , B29C47/0026 , B29C47/8845 , B29C47/92 , B29C2947/92514 , B29C2947/92704 , B29C2947/92895 , B29C2947/92904 , C08F4/65912 , C08F4/65916 , C08F210/16 , C08J5/18 , C08J2323/08 , Y10T428/31938 , C08F4/65925 , C08F210/14 , C08F2500/12 , C08F2500/03 , C08F2500/06 , C08F2500/11 , C08F2500/26
摘要： A polyethylene film having a balance of improved physical and mechanical properties and a method for making the same are provided. In one aspect, the film includes a 1% secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil. In one aspect, the method comprises reacting ethylene derived units and a comonomer in the presence of a hafnium-based metallocene at a temperature of from 70° C. and 90° C., an ethylene partial pressure of from 120 psia and 260 psia, and a comonomer to ethylene ratio of from 0.01 to 0.02 to produce an ethylene based polymer. The method further comprises extruding the ethylene based polymer at conditions sufficient to produce a polyethylene film comprising a secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil.
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公开(公告)号：US08399581B2
公开(公告)日：2013-03-19
申请号：US10868218
申请日：2004-06-15
IPC分类号： C08F14/06 , C08F210/16 , B32B27/32 , C08J5/18
CPC分类号： C08J5/18 , B29C47/0021 , B29C47/0026 , B29C47/8845 , B29C47/92 , B29C2947/92171 , B29C2947/92485 , B29C2947/92666 , B29C2947/9298 , C08F210/16 , C08J2323/08 , Y10S428/91 , Y10S526/943 , Y10T428/24942 , Y10T428/31855 , Y10T428/31931 , Y10T428/31938 , C08F210/14 , C08F2500/12 , C08F2500/26
摘要： Metallocene catalyzed polyethylenes are found to have improved physical properties, improved processability and improved balance of properties. Surprisingly, there is a direct relationship between MD shrinkage, and MD tear. Additionally, MD tear is greater than TD tear, and MD tear is also greater than intrinsic tear. MD tear to TD tear ratios are above 0.9, and dart drop impact is above 500 g/mil. The polyethylenes have a relatively broad composition distribution and relatively broad molecular weight distribution.
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公开(公告)号：US07179876B2
公开(公告)日：2007-02-20
申请号：US11098077
申请日：2005-04-04
IPC分类号： C08F210/16 , C08F4/64 , C35B27/32
CPC分类号： C08F10/00 , B29C47/0021 , B29C47/0026 , B29C47/8845 , B29C47/92 , B29C2947/92514 , B29C2947/92704 , B29C2947/92895 , B29C2947/92904 , C08F4/65912 , C08F4/65916 , C08F210/16 , C08J5/18 , C08J2323/08 , Y10T428/31938 , C08F4/65925 , C08F210/14 , C08F2500/12 , C08F2500/03 , C08F2500/06 , C08F2500/11 , C08F2500/26
摘要： A polyethylene film having a balance of improved physical and mechanical properties and a method for making the same are provided. In one aspect, the film includes a 1% secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil. In one aspect, the method comprises reacting ethylene derived units and a comonomer in the presence of a hafnium-based metallocene at a temperature of from 70° C. and 90° C., an ethylene partial pressure of from 120 psia and 260 psia, and a comonomer to ethylene ratio of from 0.01 to 0.02 to produce an ethylene based polymer. The method further comprises extruding the ethylene based polymer at conditions sufficient to produce a polyethylene film comprising a secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil.
摘要翻译： 提供了具有改善的物理和机械性能的平衡的聚乙烯膜及其制备方法。 在一个方面，该膜包括大于25,000psi的1％割线模量，大于500g / mil的落镖冲击强度和大于500g / mil的MD撕裂强度。 在一个方面，该方法包括在铪基茂金属存在下，在70℃和90℃的温度，120psia和260psia的乙烯分压下使乙烯衍生的单元和共聚单体反应， 和共聚单体与乙烯的比例为0.01至0.02，以制备乙烯基聚合物。 该方法还包括在足以产生包含大于25,000psi的正割模数，大于500g / mil的落镖冲击强度和大于500g / mil的MD撕裂强度的聚乙烯膜的条件下挤出基于乙烯的聚合物， 密尔
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公开(公告)号：US07125933B2
公开(公告)日：2006-10-24
申请号：US10297777
申请日：2001-06-22
CPC分类号： C08L23/04 , B32B27/322 , C08L23/0815 , C08L2205/02 , C08L2205/025 , C08L2205/03 , C08L2314/06 , Y10T428/31938 , C08L2666/06
摘要： Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and linear low density polyethylene (LLDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a LLDPE polymer having a density of from 0.916 to 0.940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.
摘要翻译： 公开了使用金属茂催化剂（mVLDPE）和线性低密度聚乙烯（LLDPE）生产的非常低密度聚乙烯的共混物。 聚合物共混物包括密度小于0.916g / cm 3的金属茂催化的VLDPE聚合物，VLDPE聚合物优选是直链的且不具有长链支化，密度为0.916-0.940g / cm3的LLDPE聚合物。 聚合物共混物特别适用于吹塑和流延膜应用。
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公开(公告)号：US06956088B2
公开(公告)日：2005-10-18
申请号：US10199446
申请日：2002-07-19
IPC分类号： C08J5/18 , B29C47/88 , B29C47/92 , B29K23/00 , B29L7/00 , B32B27/00 , B32B27/32 , C08F4/06 , C08F4/44 , C08F4/64 , C08F210/14 , C08F210/16 , C08L23/08
CPC分类号： C08J5/18 , B29C47/0021 , B29C47/0026 , B29C47/8845 , B29C47/92 , B29C2947/92171 , B29C2947/92485 , B29C2947/92666 , B29C2947/9298 , C08F210/16 , C08J2323/08 , Y10S428/91 , Y10S526/943 , Y10T428/24942 , Y10T428/31855 , Y10T428/31931 , Y10T428/31938 , C08F210/14 , C08F2500/12 , C08F2500/26
摘要： Metallocene catalyzed polyethylenes are found to have improved physical properties, improved processability and improved balance of properties. Surprisingly, there is a direct relationship between MD shrinkage, and MD tear. Additionally, MD tear is greater than TD tear, and MD tear is also greater than intrinsic tear. MD tear to TD tear ratios are above 0.9, and dart drop impact is above 500 g/mil. The polyethylenes have a relatively broad composition distribution and relatively broad molecular weight distribution.
摘要翻译： 发现茂金属催化的聚乙烯具有改善的物理性能，改进的加工性能和改善的性能平衡。 令人惊讶的是，MD收缩和MD撕裂之间存在直接的关系。 此外，MD撕裂大于TD撕裂，MD撕裂也大于内在撕裂。 MD撕裂TD撕裂率高于0.9，飞镖落差冲击高于500g / mil。 聚乙烯具有相对宽的组成分布和相对宽的分子量分布。
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公开(公告)号：US06936675B2
公开(公告)日：2005-08-30
申请号：US10737654
申请日：2003-12-15
IPC分类号： B29C47/88 , B32B27/00 , B32B27/32 , C08F4/06 , C08F4/44 , C08F4/64 , C08F4/659 , C08F8/00 , C08F10/00 , C08F210/14 , C08F210/16 , C08J5/18 , C08L23/08 , B35B27/32
CPC分类号： C08F10/00 , B29C47/0021 , B29C47/0026 , B29C47/8845 , B29C47/92 , B29C2947/92514 , B29C2947/92704 , B29C2947/92895 , B29C2947/92904 , C08F4/65912 , C08F4/65916 , C08F210/16 , C08J5/18 , C08J2323/08 , Y10T428/31938 , C08F4/65925 , C08F210/14 , C08F2500/12 , C08F2500/03 , C08F2500/06 , C08F2500/11 , C08F2500/26
摘要： A polyethylene film having a balance of improved physical and mechanical properties and a method for making the same are provided. In one aspect, the film includes a 1% secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil. In one aspect, the method comprises reacting ethylene derived units and a comonomer in the presence of a hafnium-based metallocene at a temperature of from 70° C. and 90° C., an ethylene partial pressure of from 120 psia and 260 psia, and a comonomer to ethylene ratio of from 0.01 to 0.02 to produce an ethylene based polymer. The method further comprises extruding the ethylene based polymer at conditions sufficient to produce a polyethylene film comprising a secant modulus of greater than 25,000 psi, a dart impact resistance of greater than 500 g/mil, and a MD tear strength of greater than 500 g/mil.
摘要翻译： 提供了具有改善的物理和机械性能的平衡的聚乙烯膜及其制备方法。 在一个方面，该膜包括大于25,000psi的1％割线模量，大于500g / mil的落镖冲击强度和大于500g / mil的MD撕裂强度。 在一个方面，该方法包括在铪基茂金属存在下，在70℃和90℃的温度，120psia和260psia的乙烯分压下使乙烯衍生的单元和共聚单体反应， 和共聚单体与乙烯的比例为0.01至0.02，以制备乙烯基聚合物。 该方法还包括在足以产生包含大于25,000psi的正割模数，大于500g / mil的落镖冲击强度和大于500g / mil的MD撕裂强度的聚乙烯膜的条件下挤出基于乙烯的聚合物， 密尔
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公开(公告)号：US06828394B2
公开(公告)日：2004-12-07
申请号：US10199808
申请日：2002-07-19
申请人： George Alan Vaughan , John F. Szul , Matthew Gary McKee , James McLeod Farley , Ching-Tai Lue , Sun-Chueh Kao
发明人： George Alan Vaughan , John F. Szul , Matthew Gary McKee , James McLeod Farley , Ching-Tai Lue , Sun-Chueh Kao
IPC分类号： C08F444
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65916 , C08F4/65922 , C08F210/16 , Y02P20/52 , Y10S526/943 , C08F4/65904 , C08F210/14 , C08F2500/12 , C08F2500/26
摘要： The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer. In particular, the invention provides a catalyst system comprising a poor comonomer incorporating catalyst compound and a good comonomer incorporating catalyst compound. Preferably, the low comonomer incorporating catalyst compound is a metallocene containing at least one substituted or unsubstituted fused ring cyclopentadienyl based ligand which is substantially directed to the front of the molecule, contains a long bridging group, or which contains a methyl substitution pattern which correlates to poor comonomer incorporation. The invention also provides methods of selecting the poor comonomer incorporating metallocene to pair with the good comonomer incorporating metallocene to produce polymers that are easy to process into a variety of articles, especially polyethylene based film, having enhanced properties.
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公开(公告)号：US06800692B2
公开(公告)日：2004-10-05
申请号：US10311528
申请日：2003-03-24
申请人： James McLeod Farley , Richard Wayne Halle , George Panagopoulous , Donna Sue Davis , Douglas J. Laurent , Alan M. Malakoff , David M. Simpson , Kevin Cable
发明人： James McLeod Farley , Richard Wayne Halle , George Panagopoulous , Donna Sue Davis , Douglas J. Laurent , Alan M. Malakoff , David M. Simpson , Kevin Cable
IPC分类号： C08F800
CPC分类号： C08L23/0815 , C08L23/04 , Y10T428/31855 , C08L2666/06
摘要： The present invention provides a polymer blend suitable for use as a film or a coating, the polymer blend including from 1 to 99% by weight of a metallocene-produced VLDPE polymer having a density less than 0.916 g/cm3, and from 1 to 99% by weight of an LDPE polymer having a density of from 0.916 to 0.928 g/cm3 wherein the sum of (a) and (b) is 100%. The VLDPE polymer can have a melt index of from 6 to 15 dg/min, or from 9 to 12 dg/min. The present invention further provides polymeric films extrusion cast from such polymer blends, and articles having a flexible substrate and a polymeric film extrusion-coated on the substrate
摘要翻译： 本发明提供一种适合用作膜或涂层的聚合物共混物，所述聚合物共混物包括1至99重量％的茂金属生产的密度小于0.916g / cm 3的VLDPE聚合物， 1至99重量％的密度为0.916至0.928g / cm 3的LDPE聚合物，其中（a）和（b）的总和为100％。 VLDPE聚合物的熔体指数可以为6至15dg / min，或9至12dg / min。 本发明进一步提供了由这种聚合物共混物挤压成型的聚合物膜，以及具有柔性基材和挤出涂布在基材上的聚合物膜的制品
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公开(公告)号：US07141632B2
公开(公告)日：2006-11-28
申请号：US10817555
申请日：2004-04-02
申请人： George Alan Vaughan , John F. Szul , Matthew Gary McKee , James McLeod Farley , Ching-Tai Lue , Sun-Chueh Kao
发明人： George Alan Vaughan , John F. Szul , Matthew Gary McKee , James McLeod Farley , Ching-Tai Lue , Sun-Chueh Kao
IPC分类号： C08F4/44 , C08F4/64 , C08F4/643 , C08F4/6192 , C08F4/6392 , C08F4/6592
CPC分类号： C08F10/00 , C08F4/65912 , C08F4/65916 , C08F4/65922 , C08F210/16 , Y02P20/52 , Y10S526/943 , C08F4/65904 , C08F210/14 , C08F2500/12 , C08F2500/26
摘要： The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer. In particular, the invention provides a catalyst system comprising a poor comonomer incorporating catalyst compound and a good comonomer incorporating catalyst compound. Preferably, the low comonomer incorporating catalyst compound is a metallocene containing at least one substituted or unsubstituted fused ring cyclopentadienyl based ligand which is substantially directed to the front of the molecule, contains a long bridging group, or which contains a methyl substitution pattern which correlates to poor comonomer incorporation. The invention also provides methods of selecting the poor comonomer incorporating metallocene to pair with the good comonomer incorporating metallocene to produce polymers that are easy to process into a variety of articles, especially polyethylene based film, having enhanced properties.
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公开(公告)号：US5652308A
公开(公告)日：1997-07-29
申请号：US505421
申请日：1995-07-21
申请人： Natalie Ann Merrill , James McLeod Farley , Martha Hetzel Robertson , Charles Lewis Sims , Richard Byron Pannell , Angelo Anthony Montagna
发明人： Natalie Ann Merrill , James McLeod Farley , Martha Hetzel Robertson , Charles Lewis Sims , Richard Byron Pannell , Angelo Anthony Montagna
IPC分类号： C08F4/642 , C08F4/643 , C08F4/659 , C08F4/6592 , C08F8/04 , C08F10/00 , C08F210/06 , C08F232/00 , C09J11/08 , C09J121/00 , C09J123/02 , C09J125/04 , C09J127/06 , C09J131/04 , C09J145/00 , C09J201/00 , C08L45/00 , C08F232/08
CPC分类号： C08F10/00 , C08F210/06 , C08F232/00 , C08F8/04 , C09J11/08 , C09J201/00 , C08F4/65908 , C08F4/65912 , C08F4/65925 , C08F4/65927 , Y10S526/931 , Y10S526/935
摘要： Novel tackifier resins having a M.sub.n of 5,000 or less and a T.sub.g of 0.degree. C. or above are produced by combining a metallocene catalyst with an alpha-olefin and a cyclic monomer. New adhesives are produced by blending the novel tackifier with a base polymer.
摘要翻译： 通过将茂金属催化剂与α-烯烃和环状单体组合，制备Mn为5,000以下，Tg为0℃以上的新型增粘树脂。 通过将新型增粘剂与基础聚合物共混来生产新的粘合剂。
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