公开(公告)号：US20240360257A1

公开(公告)日：2024-10-31

申请号：US18769481

申请日：2024-07-11

申请人： BOREALIS AG

发明人： Pauli Leskinen ,  Jingbo Wang ,  Markus Gahleitner ,  Klaus Bernreitner

IPC分类号： C08F210/06 ,  C08F2/00 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/02 ,  C08F210/14 ,  C08L23/16

CPC分类号： C08F210/06 ,  C08F2/001 ,  C08F4/65912 ,  C08F4/65927 ,  C08F210/02 ,  C08F210/14 ,  C08L23/16 ,  C08L2203/18 ,  C08L2207/068 ,  C08L2314/06

摘要： PP/UHMW-PE (Polypropylene-Ultrahigh-Molecular-Weight-Polyethylene)



composition having

a melting temperature Tm in the range of 125 to 150° C. (DSC, ISO 11357, Part 3),

an MFR2 of 0.15 to 0.60 g/10 min (2.16 kg, 230° C., ISO1133),

units derived from 1-hexene in an amount of at least 1.80 wt.-%, and

a XS according to ISO16152 of less than 5.0 wt.-%

all weight percentages with respect to the total PP/UHMW-PE composition.

公开(公告)号：US12122903B2

公开(公告)日：2024-10-22

申请号：US17426493

申请日：2020-02-20

申请人： LG Chem, Ltd.

发明人： Hyunsup Lee ,  Sol Cho ,  Yeonsoo Kim ,  Yi Young Choi ,  Myunghan Lee

IPC分类号： F16L11/04 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/02 ,  C08F110/02 ,  C08K5/14 ,  C08L23/06 ,  C08L23/26

CPC分类号： C08L23/06 ,  C08F4/65904 ,  C08F4/65927 ,  C08F110/02 ,  C08K5/14 ,  F16L11/04 ,  C08F10/02 ,  C08F2420/00 ,  C08F2500/12 ,  C08F2810/20 ,  C08L23/26 ,  C08L2203/18 ,  C08L2312/00 ,  C08L2312/06

摘要： The present disclosure relates to a crosslinked polyethylene pipe having excellent physical properties. The crosslinked polyethylene pipe according to the present disclosure has optimized the degree of crosslinking and storage modulus by finding out the optimum physical property range between the degree of crosslinking and the storage modulus which have a mutual trade-off relationship, whereby the crosslinked polyethylene pipe according to the present disclosure has excellent long-term durability and short-term pressure resistance, and thus can be applied to various fields requiring these physical properties.

公开(公告)号：US20240317905A1

公开(公告)日：2024-09-26

申请号：US18545505

申请日：2023-12-19

申请人： EXXONMOBIL CHEMICAL PATENTS INC. ,  THE TRUSTEES OF PRINCETON UNIVERSITY

发明人： Nikola S. Lambic ,  Brian J. Rohde ,  Irene C. Cai ,  Sarah J. Mattler ,  Tzu-Pin Lin ,  Gursu Culcu ,  Jo Ann M. Canich ,  Jarod M. Younker ,  Alex E. Carptenter ,  Paul J. Chirik

IPC分类号： C08F10/14 ,  C08F4/659 ,  C08F4/6592

CPC分类号： C08F10/14 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65927

摘要： Vinylcyclobutane (VCB) homopolymers, VCB copolymers and processes for making same. The VCB homopolymers and copolymers have a polydispersity (PDI) of less than 3.0 and are made by contacting VCB monomer in the presence of a single-site metallocene, post metallocene, or half metallocene, and an activator, under sufficient reaction conditions to produce a VCB (co)polymer having the narrow PDI of less than 3.0. The resulting poly(vinylcyclobutane) polymers have increased crystallinity and melting point properties (Tm of 165° C. to 246° C.) that are comparable to conventional polyolefins such as polyethylene (typical Tm

公开(公告)号：US12091476B2

公开(公告)日：2024-09-17

申请号：US17279736

申请日：2019-10-30

申请人： ExxonMobil Chemical Patents Inc.

发明人： Kevin A. Stevens ,  David F Sanders ,  Matthew W. Holtcamp ,  Charles J. Harlan ,  Xuan Ye ,  Adriana S. Silva ,  Matthew S. Bedoya ,  Joshua P. Olson

IPC分类号： C08F210/16 ,  C08F2/01 ,  C08F2/34 ,  C08F4/653 ,  C08F4/659 ,  C08F4/6592 ,  C08L23/08

CPC分类号： C08F2/34 ,  C08F2/01 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  C08L23/0815

摘要： In an embodiment, a method for producing a polyolefin includes contacting a first composition and a second composition in in a line to form a third composition, wherein: the first composition comprises a contact product of a first catalyst, a second catalyst, a support, a first activator, and a diluent, wherein the mol ratio of second catalyst to first catalyst is from 60:40 to 40:60, the second composition comprises a contact product of the third catalyst, a second activator, and a second diluent, and the third composition comprises a mol ratio of the third catalyst to the second catalyst to the first catalyst of from 10:35:55 to 60:15:25, such as 30:20:30; introducing the third composition from the line into a gas-phase fluidized bed reactor; exposing the third composition to polymerization conditions; and obtaining a polyolefin.

公开(公告)号：US20240294682A1

公开(公告)日：2024-09-05

申请号：US18573575

申请日：2022-06-23

申请人： BOREALIS AG

发明人： Pascal CASTRO ,  Vasileios KANELLOPOULOS ,  Georgy KIPIANI ,  Marja MUSTONEN ,  Irfan SAEED

IPC分类号： C08F210/16 ,  C08F2/00 ,  C08F2/34 ,  C08F4/659 ,  C08F4/6592

CPC分类号： C08F210/16 ,  C08F2/001 ,  C08F2/34 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65927 ,  C08F2420/07

摘要： The disclosure relates to a process for polymerising olefins, the process comprising polymerising ethylene, optionally in the presence of at least one other alpha olefin comonomer, preferably C4-C10 alpha olefin comonomer, preferably in multi stage polymerisation process configuration, in the presence of a single-site polymerisation catalyst to produce a polymer component to produce a polyethylene polymer or a polyethylene copolymer, wherein the single-site polymerisation catalyst comprises (i) a transition metal complex; (ii) a cocatalyst; and optionally (iii) a support; and is characterised by a (Weibull modulus)×(scale parameter) product equal to or higher than 40 MPa and a (Weibull modulus)/(scale parameter) ratio equal to or lower than 0.50 MPa−1 wherein the Weibull modulus and the scale parameter are determined by the Weibull analysis of the compressive strength of the catalyst particles. The disclosure further relates to a single-site polymerisation catalyst, comprising (i) a transition metal complex; (ii) a cocatalyst; and optionally (iii) a support, preferably a silica support; wherein the single-site polymerisation catalyst is characterised by a (Weibull modulus)×(scale parameter) product equal to or higher than 40 MPa and a (Weibull modulus)/(scale parameter) ratio equal to or lower than 0.50 MPa−1 wherein the Weibull modulus and the scale parameter are determined by the Weibull analysis of the compressive strength of the catalyst particles. The disclosure further relates to use of the single-site polymerisation catalyst in the preparation of a polyethylene polymer component, a polyethylene polymer, or a polyethylene copolymer.

公开(公告)号：US20240287225A1

公开(公告)日：2024-08-29

申请号：US18647691

申请日：2024-04-26

申请人： ExxonMobil Chemical Patents Inc.

发明人： Patrick C. Chen ,  Mark H. Li ,  Jennifer L. Rapp ,  Pramod J. Nandapurkar ,  Brian H. Wahn ,  Babak Lotfizadehdehkordi ,  Craig J. Emett ,  Najeeb M. Kuzhiyil ,  Jian Yang

IPC分类号： C08F210/16 ,  C07C2/30 ,  C07C2/32 ,  C08F4/659 ,  C08F4/6592

CPC分类号： C08F210/16 ,  C07C2/30 ,  C07C2/32 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65922

摘要： In at least one embodiment, a process to produce a poly alpha-olefin (PAO) includes introducing a first alpha-olefin to a first catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions to form a first reactor effluent. The first alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more. The first reactor effluent includes at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more. The process includes introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition including an acid catalyst in a second reactor to form a second reactor effluent comprising PAO trimer.

公开(公告)号：US20240279452A1

公开(公告)日：2024-08-22

申请号：US18648964

申请日：2024-04-29

申请人： QINGDAO UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人： Aihua HE ,  Chenguang LIU ,  Huafeng SHAO

IPC分类号： C08L23/22 ,  C08F2/01 ,  C08F2/06 ,  C08F4/659 ,  C08F210/08

CPC分类号： C08L23/22 ,  C08F2/01 ,  C08F2/06 ,  C08F4/65912 ,  C08F210/08 ,  C08F2400/02 ,  C08F2800/20 ,  C08L2205/025 ,  C08L2205/035 ,  C08L2207/10

摘要： Disclosed are a high temperature blasting resistance isotactic polybutene alloy and a preparation method thereof. The isotactic polybutene alloy of the present invention comprises 1-40% of isotactic polypropylene in parts by mass, 0.1-10% of a polypropylene-polybutene-1 block copolymer in parts by mass, 35-95.9% of isotactic polybutene-1 of a medium molecular weight in parts by mass, and 3-15% of isotactic polybutene-1 of a high molecular weight in parts by mass. The alloy material is prepared using a method of segmented polymerization of propylene polymerization, high hydrogen content butene polymerization and low hydrogen content butene polymerization. The prepared isotactic polybutene alloy has excellent high temperature blasting resistance and high temperature hydrostatic pressure, is high in vicat softening temperature, and is applicable to pressure pipes.

公开(公告)号：US11999814B2

公开(公告)日：2024-06-04

申请号：US18065003

申请日：2022-12-13

申请人： Chevron Phillips Chemical Company LP

发明人： Max P. McDaniel ,  Qing Yang ,  Ryan N. Rose ,  Kathy S. Clear ,  Graham R. Lief ,  Eric D. Schwerdtfeger ,  Anand Ramanathan ,  Jeremy M. Praetorius ,  Connor D. Boxell

IPC分类号： C08F4/02 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/02

CPC分类号： C08F4/025 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/02 ,  C08F2420/01 ,  C08F2420/03

摘要： Sulfated bentonite compositions are characterized by a total pore volume from 0.4 to 1 mL/g, a total BET surface area from 200 to 400 m2/g, and an average pore diameter from 55 to 100 Angstroms. The sulfated bentonite compositions also can be characterized by a d50 average particle size in a range from 15 to 50 μm and a ratio of d90/d10 from 3 to 15. The sulfated bentonite compositions can contain a sulfated bentonite and from 10 to 90 wt. % of colloidal particles, or the sulfated bentonite compositions can contain a sulfated bentonite and from 0.2 to 10 mmol/g of zinc and/or phosphorus. These compositions can be utilized in metallocene catalyst systems to produce ethylene based polymers.

公开(公告)号：US20240166854A1

公开(公告)日：2024-05-23

申请号：US18280201

申请日：2022-02-24

申请人： MITSUI CHEMICALS, INC.

发明人： Yuto YOSHIDA ,  Terufumi SUZUKI ,  Shota ABE

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

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

摘要： 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：US20240132639A1

公开(公告)日：2024-04-25

申请号：US18265854

申请日：2021-12-02

申请人： HANWHA SOLUTIONS CORPORATION

发明人： Jisong JO ,  Jeong Hynn PARK ,  Sun Dong KIM ,  Munhee LEE ,  Ui Gap JOUNG

IPC分类号： C08F10/14 ,  C08F2/34 ,  C08F4/02 ,  C08F4/14 ,  C08F4/659 ,  C08F4/6592

CPC分类号： C08F10/14 ,  C08F2/34 ,  C08F4/025 ,  C08F4/14 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F2500/12

摘要： An olefin-based polymer, a film prepared from the olefin-based polymer, and preparation methods for manufacturing the olefin-based polymer and the film are disclosed. The olefin-based polymer has excellent processability, and a film prepared from the olefin-based polymer, particularly, a linear low density polyethylene film has excellent mechanical strength, in particular, drop impact strength.