公开(公告)号：US20240294681A1

公开(公告)日：2024-09-05

申请号：US18572405

申请日：2022-06-23

Applicant: BOREALIS AG

Inventor： Vasileios KANELLOPOULOS ,  Joana Elvira KETTNER ,  Matthias HOFF ,  Apostolos KRALLIS ,  Victor SUMERIN ,  Jani AHO ,  Kalle KALLIO ,  Irfan SAEED ,  Erno ELOVAINIO

IPC: C08F210/16 ,  C08F2/00 ,  C08F2/01 ,  C08F2/34 ,  C08F2/38 ,  C08F4/6592

CPC classification number: C08F210/16 ,  C08F2/001 ,  C08F2/01 ,  C08F2/34 ,  C08F2/38 ,  C08F4/6592

Abstract: The disclosure relates to a process for polymerising olefins in multi stage polymerisation process configuration, the process comprising a) polymerising in a first polymerisation step first olefin monomer, optionally in the presence of at least one other alpha olefin comonomer, in the presence of a metallocene polymerisation catalyst so as to form a first polymer component (A); and b) transferring the first polymer component (A) into a separation unit to remove low molecule penetrants and to obtain separated solid polyolefin particles of the first polymer component (A*) and c) polymerising in in gas phase in a second polymerisation step second olefin monomer, optionally in the presence of at least one other alpha olefin comonomer in the presence of the separated solid polyolefin particles (A*) of step b), so as to form a second polymer component (B). The disclosure further relates to a method for improving performance of a metallocene polymerisation catalyst in a multi-stage olefin polymerisation, wherein a first polymer component (A) produced in a first polymerisation step is transferred into a separation unit to remove low molecule penetrants and to obtain separated solid polyolefin particles of the first polymer component (A*) prior to transferring the obtained separated solid polyolefin particles of the first polymer component (A*) to a further polymerisation step.

公开(公告)号：US12071502B2

公开(公告)日：2024-08-27

申请号：US17970011

申请日：2022-10-20

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS ,  S-Oil Corporation

Inventor： Mamdouh A. Al-Harthi ,  Sung-Gil Hong ,  Hassam Mazhar ,  Farrukh Shehzad

IPC: C08F4/02 ,  C08F2/34 ,  C08F4/6592 ,  C08F4/76 ,  C08F210/16

CPC classification number: C08F4/76 ,  C08F2/34 ,  C08F4/6592 ,  C08F210/16 ,  C08F2800/00

Abstract: A method of making an ethylene-propylene (EP) copolymer includes immobilizing a metallocene catalyst on a layered double hydroxide (LDH) to form a supported metallocene catalyst complex. The method also includes mixing the supported metallocene catalyst complex in a nonpolar solvent to form a first mixture. The method further includes degassing the first mixture and saturating with a gaseous mixture of ethylene and propylene to form a second mixture. The method further includes mixing an aluminoxane catalyst with the second mixture to initiate a polymerization reaction of the ethylene and propylene to form a reaction mixture comprising the EP copolymer and separating the EP copolymer from the reaction mixture.

公开(公告)号：US12037426B2

公开(公告)日：2024-07-16

申请号：US17312230

申请日：2019-11-15

Applicant: LG Chem, Ltd.

Inventor： In Sung Park ,  Sang Eun Park ,  Eun Jung Lee ,  Hyun Jin Ju ,  Tae Su Kim ,  Choong Hoon Lee ,  Jin Sam Gong ,  Jung Ho Jun ,  Rae Keun Gwak

IPC: C08F210/16 ,  C07F17/00 ,  C08F4/6592

CPC classification number: C08F210/16 ,  C07F17/00 ,  C08F4/6592

Abstract: The present invention relates to an olefin-based copolymer of which soluble fraction at a low temperature has a high weight average molecular weight, and which has high flowability and improved physical properties of hardness, flexural strength, tearing strength, etc., and a method for preparing the same.

公开(公告)号：US20240166854A1

公开(公告)日：2024-05-23

申请号：US18280201

申请日：2022-02-24

Applicant: MITSUI CHEMICALS, INC.

Inventor： Yuto YOSHIDA ,  Terufumi SUZUKI ,  Shota ABE

IPC: C08L23/08 ,  C08F2/04 ,  C08F4/646 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/16

CPC classification number: C08L23/0815 ,  C08F2/04 ,  C08F4/6465 ,  C08F4/65912 ,  C08F4/6592 ,  C08F210/16 ,  C08L2205/025 ,  C08L2205/03 ,  C08L2207/04

Abstract: A thermoplastic elastomer composition including 100 parts by mass of a block copolymer containing a polymer block (X) having an aromatic vinyl compound as a main component and a polymer block (Y) having a conjugated diene compound as a main component, or a hydrogenated product thereof (A); 1 to 400 parts by mass of an ethylene/α-olefin copolymer (B) satisfying the following requirements (b-1) to (b-3); and 0 to 200 parts by mass of a polyolefin-based resin (C) satisfying the following requirement (c-1), (b-1) a kinematic viscosity at 100° C. is 5 to 5,000 mm2/s and a kinematic viscosity at 40° C. is 50 to 100,000 mm2/s, (b-2) a weight-average molecular weight (Mw) determined by gel permeation chromatography (GPC) is 1,000 to 30,000, (b-3) a content ratio of ethylene structural units is 15 to 85 mol %, and (c-1) MFR (230° C. and 2.16 kg) is 0.1 to 500 g/10 min.

公开(公告)号：US20240101738A1

公开(公告)日：2024-03-28

申请号：US18273144

申请日：2022-10-28

Applicant: LG Chem, Ltd.

Inventor： Jin Sam Gong ,  Eun Jung Lee ,  Jeong Yon Jeong ,  Young Woo Lee ,  Jung Kyu Lee ,  Si Jung Lee ,  Hye Ji Lee

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

CPC classification number: C08F210/16 ,  C08F4/65908 ,  C08F4/6592

Abstract: An ethylene/alpha-olefin copolymer having excellent physical properties showing reduced immersion time of a crosslinking agent and a high degree of crosslinking, and a composition for an encapsulant film, comprising the same, is described herein.

公开(公告)号：US11905348B2

公开(公告)日：2024-02-20

申请号：US16979998

申请日：2018-03-20

Applicant: MITSUI CHEMICALS, INC.

Inventor： Kotaro Ichino ,  Yoshiharu Kikuchi ,  Keisuke Shishido ,  Junpei Tanaka ,  Mitsunao Arino

IPC: C08F210/18 ,  B60C1/00 ,  C08F4/6592 ,  C08K3/36 ,  C08L9/06 ,  C08L23/16

CPC classification number: C08F210/18 ,  B60C1/0008 ,  B60C1/0016 ,  B60C1/0025 ,  C08F4/6592 ,  C08K3/36 ,  C08L9/06 ,  C08L23/16 ,  B60C2001/005

Abstract: An object of the present invention is to provide a novel ethylene/α-olefin/non-conjugated polyene copolymer containing a certain non-conjugated polyene such as VNB as a copolymerization component, having a low long-chain branching content, excellent in cure characteristics in the case of crosslinking by using peroxide, and having good processability. The ethylene/α-olefin/non-conjugated polyene copolymer according to the present invention has constitutional units derived from ethylene (A), an α-olefin (B) having 3 to 20 carbon atoms, and a non-conjugated polyene (C) having a total of two or more partial structures selected from the group consisting of the following general formulas (I) and (II) in a molecule, and satisfies certain requirements.

公开(公告)号：US20230391906A1

公开(公告)日：2023-12-07

申请号：US18247420

申请日：2021-09-16

Applicant: Polyplastics Co., Ltd.

Inventor： Tomoyuki Tada ,  Naoyuki Wakitani ,  Hiroyuki Komatsu

IPC: C08F210/02 ,  C08F4/6592

CPC classification number: C08F210/02 ,  C08F4/6592

Abstract: A production method for a cyclic olefin copolymer which is capable of efficiently producing a cyclic olefin copolymer by copolymerizing monomers including a norbornene monomer and ethylene while suppressing the formation of a polyethylene-like impurity. The monomers including a norbornene monomer and ethylene are polymerized in the presence of a metallocene catalyst containing a cyclopentadiene ligand which is substituted with an alkyl group optionally substituted with a halogen atom, or a trialkylsilyl group, and satisfies specific conditions for substituent(s).

公开(公告)号：US11814457B2

公开(公告)日：2023-11-14

申请号：US18167120

申请日：2023-02-10

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

IPC: B01J31/38 ,  B01J31/00 ,  C08F4/64 ,  C08F210/16 ,  C08J5/18 ,  C08F4/6592 ,  B01J3/00 ,  B01J37/26 ,  B01J35/02

CPC classification number: C08F210/16 ,  B01J31/38 ,  C08J5/18 ,  B01J3/00 ,  B01J35/023 ,  B01J37/26 ,  C08F4/6592 ,  C08F4/65925 ,  C08F4/65927 ,  C08F2410/07 ,  C08F2500/12 ,  C08F2500/26 ,  C08J2323/20

Abstract: Catalyst compositions containing a metallocene compound, a solid activator, and a co-catalyst, in which the solid activator or the supported metallocene catalyst has a d50 average particle size of 15 to 50 μm and a particle size distribution of 0.5 to 1.5, can be contacted with an olefin in a loop slurry reactor to produce an olefin polymer. A representative ethylene-based polymer produced using the catalyst composition has excellent dart impact strength and low gels, and can be characterized by a HLMI from 4 to 10 g/10 min, a density from 0.944 to 0.955 g/cm3, a higher molecular weight component with a Mn from 280,000 to 440,000 g/mol, and a lower molecular weight component with a Mw from 30,000 to 45,000 g/mol and a ratio of Mz/Mw ranging from 2.3 to 3.4.

公开(公告)号：US11795183B2

公开(公告)日：2023-10-24

申请号：US17267321

申请日：2019-12-10

Applicant: LG Chem, Ltd.

Inventor： Young Shil Do ,  A Rim Kim ,  Yun Jin Lee ,  Ki Soo Lee ,  Choong Hoon Lee ,  Seung Hwan Jung

IPC: C07F17/00 ,  C08F4/76 ,  C08F4/64 ,  C07F7/28 ,  C08F4/659 ,  C08F4/6592 ,  C08F110/02 ,  C08F110/06 ,  C08F210/16

CPC classification number: C07F7/28 ,  C08F4/6592 ,  C08F4/65912 ,  C08F110/02 ,  C08F110/06 ,  C08F210/16 ,  C07F17/00 ,  C08F4/64 ,  C08F4/76

Abstract: A transition metal compound having a novel structure is disclosed herein. The transition metal compound can have improved structural stability by forming a stable coordination site of a transition metal through controlling a bond angle formed by the amido group of a phenylene bridge, a cyclopentadienyl ring, and a transition metal. The transition metal compound has excellent copolymerization properties and may produce an olefin polymer having a high molecular weight in a ultra low density region.

公开(公告)号：US11759977B2

公开(公告)日：2023-09-19

申请号：US16963695

申请日：2019-11-04

Applicant: LG Chem, Ltd.

Inventor： Heekwang Park ,  Hye Kyung Lee ,  Ha Na Park ,  Kyung Seop Noh ,  Hyunsup Lee ,  Seong Min Chae ,  Heon Yong Kwon ,  Sangjin Jeon ,  Seok Hwan Kim

IPC: C08F110/06 ,  C08F4/6592 ,  B29B9/12 ,  B29K23/00 ,  C08K5/098 ,  C08K5/12

CPC classification number: B29B9/12 ,  C08F4/6592 ,  C08F110/06 ,  B29K2023/12 ,  C08F4/65927 ,  C08K5/098 ,  C08K5/12

Abstract: The present invention provides a polypropylene resin pellet that is environment friendly, has excellent workability, and enables preparation of fine denier fiber, and a method for preparing the same.