公开(公告)号：US20240343840A1

公开(公告)日：2024-10-17

申请号：US18682388

申请日：2022-08-08

申请人： W.R. Grace & Co.-Conn.

发明人： Ping CAI ,  David M. ERDELT ,  John Dealon STANLEY

IPC分类号： C08F2/34 ,  C08F2/01 ,  C08F4/659 ,  C08F110/06

CPC分类号： C08F2/34 ,  C08F2/01 ,  C08F4/659 ,  C08F110/06

摘要： A process for increasing a settled bulk density of a granular polyolefin polymer includes feeding a catalyst stream into a gas phase polymerization reactor, the catalyst stream comprising catalyst particles, optionally in slurry form by suspending in a mineral oil and/or other hydrocarbon liquid, contained in a carrier fluid; feeding a support gas into the gas phase polymerization reactor together with the catalyst stream entering the reactor, the support gas being fed into the gas phase reactor at a velocity; forming polyolefin particles in the gas phase polymerization reactor through contact with the catalyst particles and a monomer and optionally one or more comonomers; and determining a settled bulk density of the granular polyolefin particles, and, based on the settled bulk density, selectively increasing or decreasing the velocity of the support gas in order to maintain the settled bulk density above a preset limit.

公开(公告)号：US12065515B2

公开(公告)日：2024-08-20

申请号：US17603210

申请日：2020-08-27

申请人： LG Chem, Ltd.

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

IPC分类号： C08F110/06 ,  C08F4/6592 ,  C08L23/08

CPC分类号： C08F110/06 ,  C08F4/6592 ,  C08L23/0815 ,  C08L2203/30 ,  C08L2205/02 ,  C08F210/16 ,  C08F210/08 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/34 ,  C08F2500/35 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/03 ,  C08F2500/34 ,  C08F2500/35 ,  C08F210/16 ,  C08F4/6592 ,  C08F210/16 ,  C08F2/06 ,  C08L23/142 ,  C08L23/0815

摘要： The present invention relates to a polypropylene-based composite material having improved physical properties including impact strength at low temperature and at room temperature, flexural strength, flexural modulus, etc., and a method for preparing the same.

公开(公告)号：US20240270882A1

公开(公告)日：2024-08-15

申请号：US18043848

申请日：2021-08-27

申请人： Reliance Industries Limited

发明人： Virendrakumar Gupta ,  Sanjay Rastogi ,  Dario Romano ,  Ramiro Marroquin-Garcia

IPC分类号： C08F110/06

CPC分类号： C08F110/06

摘要： The present disclosure relates to a process for preparation of disentangled ultra-high molecular weight isotactic polypropylene. The disentangled ultra-high molecular weight isotactic polypropylene of the present disclosure has a low entanglement density, a low bulk density and a sphere like morphology. Further, the disentangled ultra-high molecular weight isotactic polypropylene of the present disclosure does not need costly and energy consuming post-production treatment for reducing the entanglement density.

公开(公告)号：US12053959B2

公开(公告)日：2024-08-06

申请号：US18036373

申请日：2021-11-11

申请人： FP CORPORATION ,  SunAllomer Ltd.

发明人： Shingo Ueno ,  Takeshi Nakajima ,  Masayuki Ikeda

IPC分类号： B32B27/08 ,  B29C48/00 ,  B32B7/02 ,  B32B27/20 ,  B32B27/32 ,  B65D65/40 ,  C08F110/06 ,  C08K3/34 ,  B29K23/00 ,  B29K509/00

CPC分类号： B32B27/08 ,  B29C48/0021 ,  B32B7/02 ,  B32B27/20 ,  B32B27/32 ,  B65D65/40 ,  C08F110/06 ,  C08K3/34 ,  B29K2023/12 ,  B29K2509/00 ,  B29K2995/0053 ,  B32B2250/242 ,  B32B2250/40 ,  B32B2264/10 ,  B32B2264/201 ,  B32B2307/306 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/546 ,  B32B2307/558 ,  B32B2307/7376 ,  B32B2439/02

摘要： A polypropylene multilayer sheet includes:



a biaxially oriented polypropylene layer F having a melting point TmF; and
a biaxially oriented polypropylene layer N having a melting point TmN,
the biaxially oriented polypropylene layer N and the biaxially oriented polypropylene layer F being alternately laminated,
the polypropylene multilayer sheet having a thickness of 0.15 mm to 3.0 mm, wherein:

TmF>TmN,

a total number of layers is 3 to 11,
the biaxially oriented polypropylene layer F is formed of a resin composition containing: a polypropylene-based resin as a component (A); and an inorganic filler as a component (B),
a weight ratio of the component (B)/[the component (A)+the component (B)] is 0.5 to 60 wt %,
the biaxially oriented polypropylene layer N is formed of a resin composition containing: a polypropylene-based resin as a component (a); and the component (B) as an optional component, and
a weight ratio of the component (B)/[the component (a)+the component (B)] is 0 to 10 wt %.

公开(公告)号：US20240209126A1

公开(公告)日：2024-06-27

申请号：US17769595

申请日：2021-07-06

申请人： LG CHEM, LTD.

发明人： Byung Seok KIM ,  Seyoung KIM ,  Minyoung KANG ,  Insun LEE ,  Seok Hwan KIM ,  Donghyeon GWON ,  Yoonchul JUNG

IPC分类号： C08F4/659 ,  C08F4/646 ,  C08F4/6592 ,  C08F110/06

CPC分类号： C08F4/65916 ,  C08F4/6465 ,  C08F4/65912 ,  C08F4/65927 ,  C08F110/06

摘要： Disclosed is a hybrid supported metallocene catalyst exhibiting high activity in propylene polymerization and useful for preparing a polypropylene having high melt strength by introducing long chain branches into the polypropylene molecule, and to a method for preparing a polypropylene using the same.

公开(公告)号：US12012476B2

公开(公告)日：2024-06-18

申请号：US17780177

申请日：2020-11-28

申请人： BASELL POLIOLEFINE ITALIA S.R.L.

发明人： Simona Guidotti ,  Dario Liguori ,  Giampiero Morini

IPC分类号： C08F4/654 ,  C08F4/649 ,  C08F4/651 ,  C08F10/02 ,  C08F10/06 ,  C08F110/06

CPC分类号： C08F4/6545 ,  C08F4/6495 ,  C08F4/651 ,  C08F10/06

摘要： A catalyst for the polymerization of olefins made from or containing (a) a solid catalyst component containing Mg, Ti and optionally an internal electron donor compound (ID), (b) an aluminum alky compound, and (c) an external electron donor (ED) selected from non-aromatic diazo compounds.

公开(公告)号：US11970510B2

公开(公告)日：2024-04-30

申请号：US17286776

申请日：2019-10-15

申请人： CHINA PETROLEUM & CHEMICAL CORPORATION ,  BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION

发明人： Jin Zhao ,  Xianzhi Xia ,  Yuexiang Liu ,  Yang Tan ,  Chunhong Ren ,  Weili Li ,  Long Chen ,  Futang Gao ,  Yongtai Ling ,  Tao Liu

IPC分类号： C08F10/00 ,  C07F7/28 ,  C08F110/00 ,  C08F110/06

CPC分类号： C07F7/28 ,  C08F110/06

摘要： Disclosed are a catalyst component and a catalyst for olefin polymerization, and an olefin polymerization method. The catalyst component comprises magnesium, titanium, a halogen and an internal electron donor, wherein the internal electron donor comprises a monocarboxylic acid ester compound and a diether compound, and the molar ratio of the monocarboxylic acid ester compound to the diether compound is (0.0035-0.7):1. By using the catalyst, a polymer having both a high isotactic index and a high melt flow index can be prepared.

公开(公告)号：US11945896B2

公开(公告)日：2024-04-02

申请号：US17761451

申请日：2020-09-10

申请人： W.R. Grace & Co.-CONN.

发明人： Joseph Coalter, III ,  Rose Kent ,  Adam Marwitz ,  Ronald Epstein ,  Michael Elder

IPC分类号： C08F110/06 ,  C08F4/646 ,  C08F4/654

CPC分类号： C08F4/6541 ,  C08F4/6465 ,  C08F110/06

摘要： A Ziegler-Natta catalyst composition is disclosed. The catalyst composition includes an internal electron donor with improved polymerization kinetics, a long lifetime, improved stereoselectivity and/or improved hydrogen response.

公开(公告)号：US11871745B2

公开(公告)日：2024-01-16

申请号：US17194442

申请日：2021-03-08

申请人： Ka Shui Plastic Technology Co. Ltd.

发明人： You Wu ,  Hoi-Kuan Kong ,  Yan-Hua Zhao ,  Ho-Man Au ,  Wai-Chung Peter Wong ,  Cheuk-Nang Daniel Sung ,  Yuen-Fat Lee

IPC分类号： A01N25/10 ,  A01N31/02 ,  A01N37/38 ,  A01N37/44 ,  A01N37/46 ,  C08F110/06 ,  C08F110/02 ,  C08G59/32 ,  C08F120/32

CPC分类号： A01N37/46 ,  A01N25/10 ,  A01N31/02 ,  A01N37/38 ,  A01N37/44 ,  C08F110/02 ,  C08F110/06 ,  C08F120/32 ,  C08G59/3218

摘要： Bacteria repellant polymer composite having a reduced yellowness index prepared by melt processing a base polymer an epoxy resin and a bacteria repellant agent and methods of preparation thereof.

公开(公告)号：US20240001652A1

公开(公告)日：2024-01-04

申请号：US18036373

申请日：2021-11-11

申请人： FP CORPORATION ,  SunAllomer Ltd.

发明人： Shingo UENO ,  Takeshi NAKAJIMA ,  Masayuki IKEDA

IPC分类号： B32B27/08 ,  B32B27/32 ,  B32B27/20 ,  B32B7/02 ,  B65D65/40 ,  B29C48/00 ,  C08F110/06 ,  C08K3/34

CPC分类号： B32B27/08 ,  B32B27/32 ,  B32B27/20 ,  B32B7/02 ,  B65D65/40 ,  B29C48/0021 ,  C08F110/06 ,  C08K3/34 ,  B32B2307/518 ,  B32B2307/7376 ,  B32B2264/201 ,  B32B2264/10 ,  B32B2439/02 ,  B32B2250/40 ,  B32B2307/54 ,  B32B2307/558 ,  B32B2307/546 ,  B32B2307/306 ,  B32B2250/242 ,  B29K2023/12

摘要： A polypropylene multilayer sheet includes:



a biaxially oriented polypropylene layer F having a melting point TmF; and
a biaxially oriented polypropylene layer N having a melting point TmN,
the biaxially oriented polypropylene layer N and the biaxially oriented polypropylene layer F being alternately laminated,
the polypropylene multilayer sheet having a thickness of 0.15 mm to 3.0 mm, wherein:






TmF>TmN,



a total number of layers is 3 to 11,
the biaxially oriented polypropylene layer F is formed of a resin composition containing: a polypropylene-based resin as a component (A); and an inorganic filler as a component (B),
a weight ratio of the component (B)/[the component (A)+the component (B)] is 0.5 to 60 wt %,
the biaxially oriented polypropylene layer N is formed of a resin composition containing: a polypropylene-based resin as a component (a); and the component (B) as an optional component, and
a weight ratio of the component (B)/[the component (a)+the component (B)] is 0 to 10 wt %.