公开(公告)号：US20130085060A1

公开(公告)日：2013-04-04

申请号：US13633919

申请日：2012-10-03

Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP

Inventor： Errun Ding ,  Joel L. Martin ,  Albert P. Masino ,  Qing Yang ,  Youlu Yu

IPC: C08F4/76 ,  C08F4/6592

CPC classification number: C08F4/76 ,  C07F17/00 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F10/00 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/04 ,  C08F2500/07 ,  C08F2500/12

Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.

Abstract translation: 本发明提供了采用具有与过渡金属结合的含杂原子的配体的半茂金属化合物的聚合催化剂组合物。 还提供了制备这些杂化茂金属化合物和在用于烯烃聚合的催化剂组合物中使用这些化合物的方法。

公开(公告)号：US12240964B2

公开(公告)日：2025-03-04

申请号：US18663194

申请日：2024-05-14

Applicant: Chevron Phillips Chemical Company LP

Inventor： Errun Ding ,  Chung Ching Tso ,  Max P. McDaniel ,  Ashish M. Sukhadia ,  Youlu Yu ,  Randall S. Muninger ,  Aaron M. Osborn ,  Christopher E. Wittner

IPC: C08F4/659 ,  C08F4/64 ,  C08F4/6592 ,  C08F10/02 ,  C08F210/16 ,  C08L23/0807

Abstract: Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 15 g/10 min, a density from 0.91 to 0.945 g/cm3, a CY-a parameter at 190° C. from 0.2 to 0.6, an average number of long chain branches per 1,000,000 total carbon atoms of the polymer in a molecular weight range of 500,000 to 2,000,000 g/mol of less than 5, and a maximum ratio of ηΕ/3η at an extensional rate of 0.03 sec−1 in a range from 3 to 15. The ethylene polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in the lower molecular weight fraction, such that polymer melt strength and bubble stability are maintained for the fabrication of blown films and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single atom bridged metallocene compound with an indenyl group and a cyclopentadienyl group, and an unbridged hafnium metallocene compound with two cyclopentadienyl groups.

公开(公告)号：US12037483B2

公开(公告)日：2024-07-16

申请号：US18123071

申请日：2023-03-17

Applicant: Chevron Phillips Chemical Company LP

Inventor： Youlu Yu ,  Eric D. Schwerdtfeger ,  Jeffrey S. Fodor ,  David A. Soules

IPC: C08L23/06 ,  C08L23/08

CPC classification number: C08L23/0815 ,  C08L23/06 ,  C08L2205/025 ,  C08L2314/00

Abstract: A bimodal polymer composition comprising a lower molecular weight homopolymer and a higher molecular weight copolymer wherein the bimodal polymer composition has a density of from about 0.930 gram per cubic centimeter (g/cc) to about 0.970 g/cc, a ratio of high load melt index:melt index of from about 10 to about 150 and an Environmental Stress Crack Resistance (ESCR) of from about 25 hours to about 300 hours when measured in accordance with ASTM D1693 or ASTM D2561. A chromium-catalyzed polymer composition comprising (i) a lower molecular weight homopolymer and (ii) a higher molecular weight copolymer, wherein the bimodal polymer composition has an Environmental Stress Crack Resistance (ESCR) of from about 25 hours to about 300 hours when measured in accordance with ASTM D1693 or ASTM D2561.

公开(公告)号：US11945938B2

公开(公告)日：2024-04-02

申请号：US18303656

申请日：2023-04-20

Applicant: Chevron Phillips Chemical Company LP

Inventor： Graham R. Lief ,  Qing Yang ,  Youlu Yu

IPC: C08L23/08 ,  C08F2/34 ,  C08F4/653 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/16

CPC classification number: C08L23/0815 ,  C08F2/34 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  C08F2420/00 ,  C08L2207/062

Abstract: Ethylene-based polymers are characterized by a density from 0.92 to 0.955 g/cm3, a HLMI of less than 35 g/10 min, and a ratio of a number of short chain branches (SCBs) per 1000 total carbon atoms at Mz to a number of SCBs per 1000 total carbon atoms at Mn in a range from 11.5 to 22. These polymers can have a higher molecular weight (HMW) component and a lower molecular weight (LMW) component, in which a ratio of a number of SCBs per 1000 total carbon atoms at Mn of the HMW component to a number of SCBs per 1000 total carbon atoms at Mn of the LMW component is in a range from 10.5 to 22. These ethylene polymers can be produced using a dual catalyst system containing an unbridged metallocene compound with an indenyl group having at least one halogen-substituted hydrocarbyl substituent with at least two halogen atoms, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

公开(公告)号：US11859024B2

公开(公告)日：2024-01-02

申请号：US17571665

申请日：2022-01-10

Applicant: Chevron Phillips Chemical Company LP

Inventor： Jeremy M. Praetorius ,  Alfred E. Brown, Jr. ,  Yongwoo Inn ,  Youlu Yu ,  Qing Yang ,  Ashish M. Sukhadia

IPC: C08F210/16 ,  B29C49/00 ,  C08F4/6592 ,  B29K23/00 ,  C08F210/02

CPC classification number: C08F210/16 ,  B29C49/0005 ,  C08F4/65927 ,  B29K2023/08 ,  C08F210/02 ,  C08F2500/09 ,  C08F2500/12 ,  C08F2500/17

Abstract: Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ηE/3η at an extensional rate of 0.1 sec−1 from 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single or two atom bridged metallocene compound with two indenyl groups, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

公开(公告)号：US11814449B2

公开(公告)日：2023-11-14

申请号：US18046212

申请日：2022-10-13

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Carlton E. Ash ,  Kathy S. Clear ,  Eric D. Schwerdtfeger ,  Carlos A. Cruz ,  Jeremy M. Praetorius ,  Youlu Yu

IPC: C08F10/02 ,  B01J8/08 ,  B01J19/24 ,  C08K3/08 ,  C08K3/36

CPC classification number: C08F10/02 ,  B01J8/08 ,  B01J19/2455 ,  C08K3/08 ,  C08K3/36

Abstract: Supported chromium catalysts containing a solid oxide and 0.1 to 15 wt. % chromium, in which the solid oxide or the supported chromium catalyst has a particle size span from 0.5 to 1.4, less than 3 wt. % has a particle size greater than 100 μm, and less than 10 wt. % has a particle size less than 10 μm, can be contacted with an olefin monomer in a loop slurry reactor to produce an olefin polymer. Representative ethylene-based polymers produced using the chromium catalysts have a HLMI of 4 to 70 g/10 min, a density from 0.93 to 0.96 g/cm3, from 150 to 680 ppm solid oxide (such as silica), from 1.5 to 6.8 ppm chromium, and a film gel count of less than 15 catalyst particle gels per ft2 of 25 micron thick film and/or a gel count of less than or equal to 50 catalyst particles of greater than 100 μm per five grams of the ethylene polymer.

公开(公告)号：US20230272197A1

公开(公告)日：2023-08-31

申请号：US18303656

申请日：2023-04-20

Applicant: Chevron Phillips Chemical Company LP

Inventor： Graham R. Lief ,  Qing Yang ,  Youlu Yu

IPC: C08L23/08 ,  C08F2/34 ,  C08F4/6592 ,  C08F4/659 ,  C08F210/16

CPC classification number: C08L23/0815 ,  C08F2/34 ,  C08F4/65925 ,  C08F4/65912 ,  C08F210/16 ,  C08F4/65927 ,  C08F4/65904 ,  C08L2207/062 ,  C08F2420/00

Abstract: Ethylene-based polymers are characterized by a density from 0.92 to 0.955 g/cm3, a HLMI of less than 35 g/10 min, and a ratio of a number of short chain branches (SCBs) per 1000 total carbon atoms at Mz to a number of SCBs per 1000 total carbon atoms at Mn in a range from 11.5 to 22. These polymers can have a higher molecular weight (HMW) component and a lower molecular weight (LMW) component, in which a ratio of a number of SCBs per 1000 total carbon atoms at Mn of the HMW component to a number of SCBs per 1000 total carbon atoms at Mn of the LMW component is in a range from 10.5 to 22. These ethylene polymers can be produced using a dual catalyst system containing an unbridged metallocene compound with an indenyl group having at least one halogen-substituted hydrocarbyl substituent with at least two halogen atoms, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

公开(公告)号：US11708433B2

公开(公告)日：2023-07-25

申请号：US17320401

申请日：2021-05-14

Applicant: Chevron Phillips Chemical Company LP

Inventor： Youlu Yu ,  Paul J. DesLauriers ,  Yongwoo Inn

IPC: C08F10/02 ,  B01J19/00 ,  B01J19/24 ,  G01N33/44 ,  C08F210/02 ,  G05B13/00 ,  G05B21/00

CPC classification number: C08F10/02 ,  B01J19/0006 ,  B01J19/2445 ,  B01J19/0013 ,  B01J19/0033 ,  B01J2219/0024 ,  B01J2219/00193 ,  B01J2219/00195 ,  B01J2219/00207 ,  B01J2219/00209 ,  B01J2219/00211 ,  B01J2219/00213 ,  B01J2219/00216 ,  B01J2219/00227 ,  C08F210/02 ,  C08F2400/02 ,  C08F2500/00 ,  C08F2500/05 ,  C08F2500/12 ,  C08F2500/17 ,  G01N33/442 ,  G05B13/00 ,  G05B21/00 ,  C08F10/02 ,  C08F2500/05 ,  C08F2500/17

Abstract: A method of determining multimodal polyethylene quality comprising the steps of (a) providing a multimodal polyethylene resin sample; (b) determining, in any sequence, the following: that the multimodal polyethylene resin sample has a melt index within 30% of a target melt index; that the multimodal polyethylene resin sample has a density within 2.5% of a target density; that the multimodal polyethylene resin sample has a dynamic viscosity deviation (% MVD) from a target dynamic viscosity of less than about 100%; that the multimodal polyethylene resin sample has a weight average molecular weight (Mw) deviation (% MwD) from a target Mw of less than about 20%; and that the multimodal polyethylene resin sample has a gel permeation chromatography (GPC) curve profile deviation (% GPCD) from a target GPC curve profile of less than about 15%; and (c) responsive to step (b), designating the multimodal polyethylene resin sample as a high quality resin.

公开(公告)号：US20230121415A1

公开(公告)日：2023-04-20

申请号：US18046212

申请日：2022-10-13

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Carlton E. Ash ,  Kathy S. Clear ,  Eric D. Schwerdtfeger ,  Carlos A. Cruz ,  Jeremy M. Praetorius ,  Youlu Yu

IPC: C08F10/02 ,  B01J8/08 ,  B01J19/24 ,  C08K3/08 ,  C08K3/36

Abstract: Supported chromium catalysts containing a solid oxide and 0.1 to 15 wt. % chromium, in which the solid oxide or the supported chromium catalyst has a particle size span from 0.5 to 1.4, less than 3 wt. % has a particle size greater than 100 μm, and less than 10 wt. % has a particle size less than 10 μm, can be contacted with an olefin monomer in a loop slurry reactor to produce an olefin polymer. Representative ethylene-based polymers produced using the chromium catalysts have a HLMI of 4 to 70 g/10 min, a density from 0.93 to 0.96 g/cm3, from 150 to 680 ppm solid oxide (such as silica), from 1.5 to 6.8 ppm chromium, and a film gel count of less than 15 catalyst particle gels per ft2 of 25 micron thick film and/or a gel count of less than or equal to 50 catalyst particles of greater than 100 μm per five grams of the ethylene polymer.

公开(公告)号：US20230019739A1

公开(公告)日：2023-01-19

申请号：US17935612

申请日：2022-09-27

Applicant: Chevron Phillips Chemical Company LP

Inventor： Carlos A. Cruz ,  Yongwoo Inn ,  John R. Rathman ,  Youlu Yu ,  Ashish M. Sukhadia ,  Jay M. Chaffin

IPC: C08F210/02 ,  C08K5/14

Abstract: Ethylene-based polymers are generally characterized by a high load melt index of less than 12 g/10 min, a weight-average molecular weight from 200,000 to 550,000 g/mol, a number-average molecular weight from 18,000 to 48,000 g/mol, a CY-a parameter of less than 0.12, a tan δ at 0.1 sec-1 from 0.5 to 0.9 degrees, a tan δ at 100 sec-1 from 0.5 to 0.75 degrees, and a viscosity at 0.001 sec-1 from 1.3 x 106 to 1 x 107 Pa-sec. These ethylene polymers can be produced by peroxide-treating a bimodal molecular weight distribution dual metallocene-catalyzed resin, and can be used to produce blow molded bottles and other blow molded products.