公开(公告)号：WO2021202486A1

公开(公告)日：2021-10-07

申请号：PCT/US2021/024828

申请日：2021-03-30

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： CHANDAK, Swapnil B. ,  BORSE, Nitin K. ,  KUHLMAN, Roger L. ,  SZUL, John F.

IPC: C08F210/16 ,  C08J5/18 ,  C08F4/6592 ,  C08F4/64 ,  C08F210/14 ,  C08F4/659 ,  C08F4/65912 ,  C08F4/65916 ,  C08J2323/08

Abstract: Provided are bimodal linear low density polyethylene copolymers (B-LLDPE copolymers) that have a combination of improved properties comprising at least one processability characteristic similar or better than that of an unblended monomodal ZN-LLDPE and a dart impact property similar or better than that of an unblended monomodal MCN-LLDPE. For the various aspects, the B-LLDPE copolymer has a density from 0.8900 to 0.9300 g/cm3; a melt index (I2) from 0.1 g/10 min. to 5 g/10 min.; a Mz from 600,000 to 1,200,000 g/mol; and a hexane extractables content present in a value of up to 2.6 wt.% as measured according to ASTM D-5227:95. The B-LLDPE copolymer can be further characterized by a first melt flow ratio (I21/I2) from 25 to 65 and a first molecular weight ratio (Mz/Mw) from 3.5 to 5.5.

公开(公告)号：WO2022031398A1

公开(公告)日：2022-02-10

申请号：PCT/US2021/040645

申请日：2021-07-07

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： BRIGANDI, Paul J. ,  ESSEGHIR, Mohamed ,  SANKETH, Kumar N. ,  HE, Chuan C. ,  KAPUR, Mridula ,  HEITSCH, Andrew T. ,  SZUL, John F.

IPC: C08F210/16 ,  C08F4/659 ,  H01B1/22 ,  H01B3/30 ,  C08F4/65912 ,  C08F4/65916 ,  C08L2203/202 ,  C08L2205/025 ,  C08L2207/20 ,  C08L23/0815 ,  H01B3/441

Abstract: In various embodiments, a thermoplastic composition may comprise from 0.5 wt.% to 75.0 wt.% of recycled polyethylene comprising a blend of polyethylene recovered from post-consumer material, pre-consumer material, or combinations thereof, and from 25.0 wt.% to 99.5 wt.% of virgin raw polyethylene comprising unimodal polyethylene, bimodal polyethylene, or combinations thereof, wherein at least 90.0 wt.% of the thermoplastic composition is comprised of the post-consumer recycled polyethylene and the virgin raw polyethylene. Manufactured articles made from the thermoplastic composition, such as coated conductors, are also provided.

公开(公告)号：WO2021242801A1

公开(公告)日：2021-12-02

申请号：PCT/US2021/034144

申请日：2021-05-26

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： NEILSON, Bethany M. ,  KUHLMAN, Roger L. ,  BAILLIE, Rhett A. ,  SZUL, John F.

IPC: C08F110/14 ,  C08F4/659

Abstract: A method of making an attenuated-light-off hybrid catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5-C≡C-R6 (A1), (R5)2C=C=C(R6)2 (B1), or (R5)(R7)C=C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated hybrid catalyst that exhibits an attenuated light-off kinetics profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a hybrid precatalyst (i.e., an unactivated "coordination entity" or "ligand-metal complex") of structural formula (I): (Cp)(L)k(X)x (I) as defined herein; and related methods, compositions and uses.

公开(公告)号：WO2021242792A1

公开(公告)日：2021-12-02

申请号：PCT/US2021/034130

申请日：2021-05-26

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： BAILLIE, Rhett A. ,  NEILSON, Bethany M. ,  KUHLMAN, Roger L. ,  SZUL, John F.

IPC: C08F210/16 ,  C08F4/659 ,  C08F110/14

Abstract: A method of making an attenuated-light-off post-metallocene catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5-C≡C-R6 (A1), (R5)2C=C=C(R6)2 (B1), or (R5)(R7)C=C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off monomer uptake profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a post-metallocene precatalyst of structural formula (I) as defined herein; and related methods, compositions and uses.

公开(公告)号：WO2022066550A1

公开(公告)日：2022-03-31

申请号：PCT/US2021/051020

申请日：2021-09-20

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： LIU, Bo ,  SZUL, John F. ,  HE, Chuan C. ,  KUHLMAN, Roger L. ,  LYNN, Timothy R.

IPC: C08F210/16 ,  C08F4/659 ,  C08F4/6592 ,  C08J5/18

Abstract: A bimodal copolymer comprises on average at least 90 weight-percent units derived from ethylene and at least 0.05 weight percent units derived from an α-olefin comonomer having from 4 to 10 carbon atoms, wherein the copolymer has the properties described herein.

公开(公告)号：WO2022031397A1

公开(公告)日：2022-02-10

申请号：PCT/US2021/040644

申请日：2021-07-07

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： ESSEGHIR, Mohamed ,  HE, Chuan C. ,  KAPUR, Mridula ,  HEITSCH, Andrew T. ,  GEUSSENS, Theo ,  SZUL, John F.

IPC: C08F210/16 ,  C08F4/659 ,  H01B3/30 ,  H01B1/22

Abstract: In various embodiments, a bimodal polyethylene may include a high molecular weight component and a low molecular weight component. The bimodal polyethylene may have a density of from 0.933 grams per centimeter (g/cm3) to 0.960 g/cm3, a melt index (I2) of from 0.3 decigrams per minute (dg/min) to 1.2 dg/min, a melt flow ratio (MFR21) greater than 80.0, a molecular weight distribution (Mw/Mn) greater than 10, a reverse comonomer distribution, and a shear thinning index of from 5.0 to 20.0. Methods for producing the bimodal polyethylene, articles manufactured from the bimodal polyethylene are also provided.

公开(公告)号：WO2021242800A1

公开(公告)日：2021-12-02

申请号：PCT/US2021/034139

申请日：2021-05-26

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： NEILSON, Bethany M. ,  KUHLMAN, Roger L. ,  BAILLIE, Rhett A. ,  SZUL, John F.

IPC: C08F110/14 ,  C08F4/659

Abstract: A method of making an attenuated-light-off post-metallocene catalyst ("attenuated post- metallocene catalyst" or "attenuated P-M catalyst"), the method comprising combining a faster- light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5-C≡C-R6 (A1), (R5)2C=C=C(R6)2 (B1), or (R5)(R7)C=C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off kinetics profile (relative to that of the faster-light- off catalyst); wherein the faster-light-off catalyst has been made by activating a post- metallocene precatalyst (i.e., an unactivated "coordination entity" or "ligand-metal complex") of structural formula (I): (D)dM(T)t(Q)q(X)x (I) as defined herein; and related methods, compositions and uses.

公开(公告)号：WO2020096734A1

公开(公告)日：2020-05-14

申请号：PCT/US2019/055893

申请日：2019-10-11

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： NEILSON, Bethany M. ,  KUHLMAN, Roger L. ,  MUNRO, Ian M. ,  SZUL, John F.

IPC: C07F7/00 ,  C08F4/64 ,  C08F10/00

Abstract: A compound of formula (1) as drawn herein, wherein M is a Group 4 metal and each R independently is a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

公开(公告)号：WO2020096732A1

公开(公告)日：2020-05-14

申请号：PCT/US2019/055878

申请日：2019-10-11

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： NEILSON, Bethany M. ,  KUHLMAN, Roger L. ,  MUNRO, Ian M. ,  SZUL, John F.

IPC: C07F7/00 ,  C08F4/64 ,  C08F10/00

Abstract: A compound of formula (1) as drawn in the description, wherein M is a Group 4 metal, one R is a silicon-containing organic solubilizing group, and the other R is a silicon-containing organic solubilizing group or a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.

公开(公告)号：WO2019190897A1

公开(公告)日：2019-10-03

申请号：PCT/US2019/023498

申请日：2019-03-22

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： MARIOTT, Wesley R. ,  KUHLMAN, Roger L. ,  CAO, Phuong A. ,  LESTER, C. Dale ,  HE, Chuan ,  CHANDAK, Swapnil B. ,  JAIN, Pradeep ,  SZUL, John F.

IPC: C08F210/16 ,  C08F4/659 ,  B01J37/00

Abstract: A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.