公开(公告)号：US20180134828A1

公开(公告)日：2018-05-17

申请号：US15564387

申请日：2016-04-19

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Antonios K. DOUFAS ,  David F. SANDERS ,  Matthew W. HOLTCAMP ,  Xuan YE ,  Alexander I. NORMAN ,  Rohan A. HULE ,  Hasnain RANGWALLA

IPC: C08F210/16 ,  C08F4/6592 ,  B01J31/22

CPC classification number: C08F210/16 ,  B01J31/2295 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65927 ,  C08F110/02 ,  C08F2420/02 ,  C08F2500/04 ,  C08F2800/10 ,  C08F4/65904 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/18 ,  C08F2500/13 ,  C08F2500/11 ,  C08F2500/17

Abstract: This invention relates to ethylene polymers obtained using a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds (a bridged monocyclopentadienyl group 4 transition metal compound and a biscyclopentadientyl group 4 transition metal compound), where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably produced using a wet mixing method, such as an aqueous method. The ethylene polymers have: 1) at least 50 mol % ethylene; 2) a reversed comonomer index, mol %, (RCI,m) of 85 or more; 3) a Comonomer Distribution Ratio-2 (CDR-2,m) of the percent comonomer at the z average molecular weight divided by the percent comonomer at the weight average molecular weight plus the number average molecular weight divided by 2 ([% comonomer at Mz]/[% comonomer at ((Mw+Mn)/2)] as determined by GPC of 2.3 or more; and 4) a density of 0.91 g/cc or more.

公开(公告)号：US20160053419A1

公开(公告)日：2016-02-25

申请号：US14843306

申请日：2015-09-02

Applicant: ExxonMobil Chemical Patents Inc. ,  Reifenhauser GmbH & Co. KG Maschinenfabrik

Inventor： Jeanne Marie MacDonald ,  Antonios K. DOUFAS ,  Jerome SARRAZIN ,  William Michael FERRY ,  Rahul Ravindra KULKARNI ,  Derek Wade THURMAN ,  Cynthia Ann MITCHELL ,  Detlef FREY ,  Peter SCHLAG ,  Hans-Georg GEUS ,  Claudio CINQUEMANI

IPC: D04H3/14 ,  A61F13/53 ,  D04H3/007

CPC classification number: D01F6/06 ,  A61F13/53 ,  A61F2013/530226 ,  C08L23/10 ,  C08L2203/12 ,  D04H1/435 ,  D04H3/007 ,  D04H3/14 ,  D10B2321/022 ,  D10B2509/026 ,  Y10T428/2904 ,  Y10T428/298 ,  Y10T442/60 ,  Y10T442/608 ,  Y10T442/66 ,  Y10T442/671 ,  Y10T442/68 ,  Y10T442/681 ,  Y10T442/696

Abstract: This invention relates to polypropylene fibers and fabrics containing polypropylene fibers, the fibers comprising propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of about 10 dg/min to about 25 dg/min; b) a dimensionless Stress Ratio/Loss Tangent Index R2 [defined by Eq. (8)] at 190° C. from about 1.5 to about 30; c) an onset temperature of crystallization under flow, Tc,rheol, (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least about 123° C.; d) an average meso run length determined by 13C NMR of at least about 55 or higher; and e) optionally, a loss tangent, tanδ, [defined by Eq. (2)] at an angular frequency of 0.1 rad/s at 190° C. from about 14 to about 70.

Abstract translation: 本发明涉及含有聚丙烯纤维的聚丙烯纤维和织物，所述纤维包含至少50摩尔％丙烯的丙烯聚合物，所述聚合物具有：a）熔体流动速率（MFR，ASTM 1238,230℃，2.16kg） 约10dg / min至约25dg / min; b）无量纲应力比/损耗切线指数R2 [由公式 （8）]在190℃从约1.5至约30; c）流动下的结晶起始温度Tc，流变学（通过SAOS流变学测定，190℃，1℃/分钟，其中所述聚合物具有0重量％成核剂存在），为至少约123 C。; d）通过13 C NMR确定的至少约55或更高的平均中观游程长度; 和e）任选地，损耗角正切tanδ[由公式 （2）]，在190℃的角度频率为0.1rad / s，约14至约70。

公开(公告)号：US20220289883A1

公开(公告)日：2022-09-15

申请号：US17663991

申请日：2022-05-18

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Rohan A. HULE ,  Antonios K. DOUFAS ,  Derek W. THURMAN ,  Crisita Carmen H. ATIENZA ,  Matthew W. HOLTCAMP ,  David F. SANDERS ,  Matthew S. BEDOYA

IPC: C08F210/16

Abstract: This invention relates to a catalyst system including the reaction product of a support (such as a fluorided silica support that preferably has not been calcined at a temperature of 400° C. or more), an activator and at least two different transition metal catalyst compounds; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.

公开(公告)号：US20150307699A1

公开(公告)日：2015-10-29

申请号：US14648524

申请日：2013-11-25

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jeanne Marie MACDONALD ,  Antonios K. DOUFAS ,  Jerome SARRAZIN ,  William Michael FERRY ,  Charles J. RUFF ,  Rahul Ravindra KULKARNI ,  Derek Wade THURMAN ,  Cynthia A. MITCHELL

IPC: C08L23/12

CPC classification number: C08L23/12 ,  C08J5/18 ,  C08J2323/08 ,  C08J2323/12 ,  C08J2423/14 ,  C08L2205/025 ,  D01F6/06 ,  Y10T428/31938 ,  C08F110/06 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/20 ,  C08F2500/03 ,  C08F210/06 ,  C08F210/16

Abstract: This invention relates to propylene polymers comprising at least 50 mol % propylene, said polymers having: a) a melt flow rate (MFR, ASTM 1238, 230° C., 2.16 kg) of 10 dg/min to 25 dg/min; b) a Dimensionless Stress Ratio/Loss Tangent Index R2 at 190° C. from 1.5 to 28; c) an onset temperature of crystallization under flow, Tc,rheol (as determined by SAOS rheology, 190° C., 1° C./min, where said polymer has 0 wt % nucleating agent present), of at least 131° C.; d) an average meso run length determined by 13C NMR of at least 90 or higher; and e) optionally, a loss tangent, tan δ, (defined by Eq. (2)) at an angular frequency of 0.1 rad/s at 190° C. from 14 to 70.

Abstract translation: 本发明涉及包含至少50mol％丙烯的丙烯聚合物，所述聚合物具有：a）10dg / min至25dg / min的熔体流动速率（MFR，ASTM 1238,230℃，2.16kg）; b）在190℃从1.5至28的无尺寸应力比/损耗切线指数R2; c）流动下的结晶起始温度Tc，流变性（通过SAOS流变学测定，190℃，1℃/分钟，其中所述聚合物存在0重量％成核剂），至少131℃ 。 d）由13 C NMR确定的平均中观游程长度至少为90或更高; 和e）任选地，在190℃，从14至70的角度频率为0.1rad / s的损耗角正切tanδ（由式（2）定义）。