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1. 发明公开

US20240367155A1 METHODS OF CHROMIUM CATALYST ACTIVATION TO REDUCE GELS AND IMPROVE MELT INDEX POTENTIAL 审中-公开
公开(公告)号：US20240367155A1
公开(公告)日：2024-11-07
申请号：US18650230
申请日：2024-04-30
申请人： Chevron Phillips Chemical Company LP
发明人： Max P. McDaniel , Zhihui Gu , Ted H. Cymbaluk , Anand Ramanathan , Julian Abrego , Taryn L. Huber , David W. Dockter
IPC分类号： B01J23/26 , B01J21/08 , B01J37/08 , B01J37/14 , C08F10/02
CPC分类号： B01J23/26 , B01J21/08 , B01J37/08 , B01J37/14 , C08F10/02 , C08F2500/07 , C08F2500/12
摘要： Processes for producing activated chromium catalysts such as titanated chromium/silica catalysts are disclosed, and these processes utilize a multistep process involving exposure to inert and oxidizing atmospheres at specific temperature conditions. The resulting activated chromium catalysts have unexpectedly high melt index potential and can produce ethylene-based polymers with lower gel counts in addition to higher melt indices.

2. 发明授权

US12103995B2 Method of controlling polyethylene architecture 有权
公开(公告)号：US12103995B2
公开(公告)日：2024-10-01
申请号：US17715678
申请日：2022-04-07
申请人： Braskem S.A.
发明人： Jorge Manuel Jardim da Silva , Hadi Mohammadi , Kevin Herrington , Manoela Ellwanger Cangussu , Nei Sebastião Domingues Junior , Adriane Gomes Simanke
IPC分类号： C08F210/02 , C08F2/38 , C08F218/10
CPC分类号： C08F218/10 , C08F2/38 , C08F210/02 , C08F2500/07 , C08F2500/08 , C08F2500/09 , C08F2500/17
摘要： A method of controlling long chain branching in an ethylene-based polymer includes polymerizing ethylene with one or more optional monomers to form an ethylene-based polymer, and controlling a degree of long chain branching (LCB) in the ethylene-based polymer. The degree of LCB ranges from 0.1 per 1000 carbon atoms in the polymer backbone to 10 per 1000 carbon atoms in the polymer backbone, as measured by 13CNMR. The degree of LCB is controlled by adding one or more branched vinyl ester to the polymerizing step in an amount ranging from 0.01 mol % to 5.0 mol %, relative to total monomer content. A polymer composition contains the ethylene-based polymer. An article includes the polymer composition containing the ethylene-based polymer.

3. 发明授权

US12091475B2 Process for preparation of multimodal polyolefin 有权
公开(公告)号：US12091475B2
公开(公告)日：2024-09-17
申请号：US17284605
申请日：2019-09-12
申请人： SABIC GLOBAL TECHNOLOGIES B.V.
发明人： Maryam Tamaddoni , Job Daniel Guzman-Carrazco , Maryam Khodadadian Miri , Francesco Bertola , Andrei Merenov
IPC分类号： C08F210/16 , C08F2/00 , C08F2/01 , C08F2/14 , C08F4/655
CPC分类号： C08F2/001 , C08F2/01 , C08F2/14 , C08F4/6555 , C08F210/16 , C08F2500/05 , C08F2500/07 , C08F2500/12
摘要： The invention relates to a process for the preparation of a multimodal copolymer of ethylene and a comonomer which is 1-hexene and/or 1-butene in a series of polymerization reactors comprising at least a first polymerization reactor and a second polymerization reactor, the process comprising: a) feeding ethylene, hydrogen and catalyst components (1) and a first diluent (29) to the first polymerization reactor (A) to prepare a first suspension (3) of solid particles of a first ethylene polymer in a first suspension medium, wherein the first diluent (29) comprises branched heptane and is essentially free of the comonomer: b) feeding the first suspension (3) to a flash drum (E) for vaporizing a part of the first suspension medium to obtain a hydrogen-depleted suspension (4), c) feeding the hydrogen-depleted suspension (4), ethylene and comonomer (9) and a second diluent (24 & 34) to the second polymerization reactor (H) to prepare a second suspension (11) of solid particles of a second ethylene polymer in a second suspension medium, wherein the second diluent (24 & 34) comprises branched heptane and the comonomer dissolved in the second diluent, d) processing the second suspension (11) to obtain a dry effluent (15) of the solid particles of the second ethylene polymer and a liquid stream (23) comprising branched heptane, the comonomer, and low molecular weight hydrocarbon reaction products, e) feeding at least part (25) of the liquid stream (23) to an evaporation system (Q) for separating non-volatile, low-molecular-weight hydrocarbon reaction products and subsequently to a distillation column (R) for separating the comonomer from branched heptane to obtain 1) a branched heptane liquid stream (29) essentially free of the comonomer. 2) a vapor distillate (31) comprising the comonomer and branched heptane and 3) a liquid distillate (30) comprising branched heptane and the comonomer, f) feeding the liquid distillate stream (30) to the second polymerization reactor (B) to form at least part of the second diluent (34) and g) feeding the branched heptane liquid stream (29) to the first polymerization reactor as the first diluent.

4. 发明授权

US12006407B2 Method for producing low molecular weight polytetrafluoroethylene, low molecular weight polytetrafluoroethylene, and powder 有权
公开(公告)号：US12006407B2
公开(公告)日：2024-06-11
申请号：US18103443
申请日：2023-01-30
申请人： DAIKIN INDUSTRIES, LTD.
发明人： Ken Yoshida , Hirotoshi Yoshida , Keisuke Hagi , Masayuki Tsuji , Taketo Kato , Yuuji Tanaka , Taku Yamanaka , Kazuya Kawahara , Masamichi Sukegawa , Kazutaka Hosokawa
IPC分类号： C08J3/12 , C08F8/06 , C08F8/50 , C08F14/26 , C08J3/28
CPC分类号： C08J3/12 , C08F8/06 , C08F8/50 , C08F14/26 , C08J3/28 , C08F2500/07 , C08F2500/17 , C08F2800/20 , C08F2810/40 , C08J2327/18 , C08J2327/22 , C08F8/50 , C08F8/06 , C08F114/26 , C08F8/50 , C08F8/06 , C08F214/26
摘要： Powder including low molecular weight polytetrafluoroethylene having a melt viscosity of 1×102 to 7×105 Pa·s at 380° C., having a melt viscosity of 1×102 to 7×105 Pa·s at 380° C., having an average particle size of 1.0 to 50 μm, and containing 30 or more carboxyl groups at ends of the molecule chain per 106 carbon atoms in the main chain, wherein the powder is substantially free from C8-C14 perfluorocarboxylic acids and salts thereof.

5. 发明授权

US11884799B2 Polyethylene resin composition, laminate, and medical container 有权
公开(公告)号：US11884799B2
公开(公告)日：2024-01-30
申请号：US17267942
申请日：2019-09-06
申请人： TOSOH CORPORATION
发明人： Hideyasu Nakao , Yoshiyuki Moro
IPC分类号： C08L23/06 , A61J1/10 , A61J1/14 , B32B1/02 , B32B27/08 , B32B27/18 , B32B27/32 , C08L23/08 , C08F210/16 , C08F4/659 , C08F4/6592 , B32B27/20 , B32B7/12 , A61L31/04
CPC分类号： C08L23/06 , A61J1/10 , A61J1/1468 , B32B1/02 , B32B27/08 , B32B27/18 , B32B27/32 , C08F210/16 , C08L23/0815 , A61L31/048 , B32B7/12 , B32B27/20 , B32B2250/03 , B32B2250/242 , B32B2250/40 , B32B2270/00 , B32B2307/306 , B32B2307/412 , B32B2307/7242 , B32B2307/732 , B32B2439/46 , B32B2439/80 , C08F4/65912 , C08F4/65916 , C08F4/65925 , C08F4/65927 , C08F2410/06 , C08L2205/025 , C08L2205/03 , C08L2207/062 , C08L2207/066 , C08F210/16 , C08F210/14 , C08F2500/03 , C08F2500/07 , C08F2500/12 , C08F210/16 , C08F210/14 , C08F2500/03 , C08F2500/08 , C08F2500/12 , A61L31/048 , C08L23/06 , C08L23/0815 , C08L23/06 , C08L23/04
摘要： A polyethylene resin composition comprising from 50 to 89 parts by weight of a linear low density polyethylene (A) having specific physical properties, from 10 to 40 parts by weight of a high density polyethylene (B) having specific physical properties, and from 1 to 20 parts by weight of a high pressure low density polyethylene (C) having specific physical properties (the total amount of (A), (B) and (C) is 100 parts by weight), and having MFR of from 3.0 to 9.0 g/10 min, is excellent in heat resistance, flexibility, barrier property and cleanness (low particle property), will not deform even after sterilization at 121° C., maintains high transparency and is excellent in processability in water cooling blown-film extrusion, and a medical container using it.

6. 发明授权

US10870714B2 Cast films, and articles made therefrom 有权
公开(公告)号：US10870714B2
公开(公告)日：2020-12-22
申请号：US16066868
申请日：2017-01-25
申请人： Dow Global Technologies LLC
发明人： Rajen M. Patel , Jacquelyn A. Degroot , Fabricio Arteaga Larios , Selim Bensason , Teresa P. Karjala , Mehmet Demirors , Chuan Yar Lai
IPC分类号： C08F210/16 , C08F10/02 , C08L23/16 , C08J5/18 , C08L23/08 , C08L23/04 , A61L15/24 , A61L31/04 , B32B5/02 , B32B27/12 , B32B27/32 , C08K3/22
CPC分类号： C08F10/02 , A61L15/24 , A61L31/048 , B32B5/022 , B32B27/12 , B32B27/32 , C08J5/18 , C08L23/04 , C08L23/08 , C08L23/16 , C08J2323/06 , C08J2323/08 , C08K2003/2241 , C08L2205/02 , C08L2207/066 , C08F10/02 , C08F4/6557 , C08F10/02 , C08F4/685 , C08F110/02 , C08F2500/03 , C08F2500/07 , C08F2500/11 , C08F2500/12 , C08F2500/17 , C08F2500/26 , C08F210/16 , C08F210/14 , C08F2500/03 , C08F2500/07 , C08F2500/11 , C08F2500/12 , C08F2500/17 , C08F2500/26 , C08F10/02 , C08F4/64058 , C08L23/08 , C08L23/04 , C08K2003/2241
摘要： Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I10/I2, wherein I10 is measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.

7. 发明申请

US20190248991A1 ETHYLENE COPOLYMER COMPOSITION 审中-公开
公开(公告)号：US20190248991A1
公开(公告)日：2019-08-15
申请号：US15780645
申请日：2016-11-15
申请人： SCG Chemicals Co., Ltd. , Mitsui Chemicals, Inc.
发明人： Natthaporn SUCHAO-IN , Kenji IWAMASA , Eiji SHIBA , Warachad KLOMKAMOL , Patcharin SAMPHAWAMONTRI , Watcharee CHEEVASRIRUNGRUANG , Shinichi KOJOH , Yasunori KANEKO , Takashi FUKAWA , Thipphaya PATHAWEEISARIYAKUL
IPC分类号： C08L23/08 , C08F210/16
CPC分类号： C08L23/0815 , C08F2/001 , C08F210/16 , C08F2500/01 , C08F2500/04 , C08F2500/07 , C08F2500/09 , C08F2500/12 , C08F2500/17 , C08F2800/20 , C08L23/06 , C08L2203/18 , C08L2205/025 , C08L2207/062 , C08L2207/07 , C08L2308/00 , C08L2314/02 , F16L9/12
摘要： The pipe articles with excellent stress crack resistance can be achieved by providing ethylene copolymer composition comprises ethylene and a C6-C10 α-olefin comonomer; the ethylene copolymer having a total density of 0.945-0.980 g/cm3 and a MFR5 of 0.10-0.50 g/10 min; and the ethylene copolymer having a comonomer content of 1-5% wt. The ethylene copolymer has Mx/My in the range of not less than 14.0; gpcBR in the range of from 0.20 to 0.80; and strain hardening modulus in the range of not less than 53.4.

8. 发明申请

US20190112407A1 POLYOLEFIN BLENDS INCLUDING CRYSTALLINE BLOCK COMPOSITES FOR PVC-FREE WEAR LAYERS 审中-公开
公开(公告)号：US20190112407A1
公开(公告)日：2019-04-18
申请号：US16089923
申请日：2017-03-29
申请人： Dow Global Technologies LLC
发明人： Xiaosong Wu , Ronald J. Weeks , Rennisha Wickham
IPC分类号： C08F297/08 , C08F210/02 , C08F210/06 , C08F210/16 , C08L23/08 , C08L23/26 , C08L23/14 , C08L53/00 , C08K5/00
CPC分类号： C08F297/083 , C08F210/02 , C08F210/06 , C08F210/16 , C08F295/00 , C08F2500/07 , C08F2500/08 , C08F2500/12 , C08F2800/20 , C08K5/005 , C08L23/0815 , C08L23/142 , C08L23/26 , C08L53/00 , C08L2205/035 , C08L2207/02 , C08F2/001 , C08F2/38
摘要： A composition comprising (A) from 10 wt % to 90 wt % of a polymeric ethylene ionomer; (B) from 10 wt % to 40 wt % of a propylene component including at least one propylene based polymer having a propylene content of at least 50.0 wt %, based on the total weight of the propylene based polymer, and a melt flow rate from 0.5 g/10 min to 200.0 g/10 min (according to ASTM D-1238 at 230° C/2.16 kg); and (C) from 5 wt % to 20 wt % of a crystalline block composite.

9. 发明授权

US10053564B2 Caps and closures 有权
公开(公告)号：US10053564B2
公开(公告)日：2018-08-21
申请号：US15298621
申请日：2016-10-20
申请人： NOVA Chemicals (International) S.A.
发明人： XiaoChuan Wang , Tieqi Li , Christopher John Brooke Dobbin , Fazle Sibtain , Kenneth Edward Taylor , Hamidreza Khakdaman
IPC分类号： C08L23/20 , C08L23/08 , C08J5/00 , C08F2/00 , B32B3/26 , B32B27/32 , C08J5/18 , B29C41/04 , C08F210/16 , B32B7/12 , B32B27/08 , B32B27/34 , B29K23/00 , B29K105/00 , C08F4/659 , C08F4/6592
CPC分类号： C08L23/0815 , B29C41/04 , B29C41/22 , B29K2023/08 , B29K2105/0058 , B29K2105/0085 , B29K2105/0094 , B29K2905/02 , B29K2995/0063 , B29K2995/0088 , B32B3/266 , B32B7/12 , B32B27/08 , B32B27/327 , B32B27/34 , B32B2307/7265 , B32B2439/40 , C08F2/001 , C08F2/06 , C08F4/6555 , C08F4/6583 , C08F4/6585 , C08F4/65904 , C08F4/65908 , C08F4/65912 , C08F4/6592 , C08F210/14 , C08F210/16 , C08F2420/01 , C08F2420/04 , C08F2500/03 , C08F2500/09 , C08F2500/11 , C08F2500/12 , C08F2500/13 , C08F2500/17 , C08F2500/18 , C08F2500/26 , C08J5/00 , C08J5/18 , C08J2323/06 , C08J2323/08 , C08J2323/20 , C08J2323/24 , C08J2423/08 , C08J2423/20 , C08J2423/24 , C08L23/08 , C08L23/14 , C08L23/20 , C08L2203/16 , C08L2205/025 , C08L2205/03 , C08L2205/06 , C08L2314/02 , C08L2314/06 , C08F2/42 , C08F2500/07
摘要： This disclosure relates to caps and closures manufactured from an ethylene interpolymer product, or a blend containing an ethylene interpolymer product, where the ethylene interpolymer product has: a Dilution Index (Yd) greater than 0; total catalytic metal ≥3.0 ppm; ≥0.03 terminal vinyl unsaturations per 100 carbon atoms, and; optionally a Dimensionless Modulus (Xd) greater than 0. The ethylene interpolymer products have a melt index from about 0.4 to about 20 dg/minute, a density from about 0.948 to about 0.968 g/cm3, a polydispersity (Mw/Mn) from about 2 to about 25 and a CDBI50 from about 54% to about 98%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.

10. 发明授权

US10023729B2 Films produced from ethylene interpolymer products 有权
公开(公告)号：US10023729B2
公开(公告)日：2018-07-17
申请号：US15134654
申请日：2016-04-21
申请人： NOVA Chemicals (International) S.A.
发明人： Marcelo Yamane , Tieqi Li , Xiaochuan Wang , Christopher Dobbin , Fazle Sibtain , Kenneth Edward Taylor , Hamidreza Khakdaman , Stephen John Brown
IPC分类号： C08F210/16 , C08L23/08 , C08J5/00 , C08F2/00 , B32B3/26 , B32B27/32 , C08J5/18 , C08L23/20 , B29C41/04 , B32B7/12 , B32B27/08 , B32B27/34 , B29K23/00 , B29K105/00 , C08F4/659 , C08F4/6592
CPC分类号： C08L23/0815 , B29C41/04 , B29C41/22 , B29K2023/08 , B29K2105/0058 , B29K2105/0085 , B29K2105/0094 , B29K2905/02 , B29K2995/0063 , B29K2995/0088 , B32B3/266 , B32B7/12 , B32B27/08 , B32B27/327 , B32B27/34 , B32B2307/7265 , B32B2439/40 , C08F2/001 , C08F2/06 , C08F4/6555 , C08F4/6583 , C08F4/6585 , C08F4/65904 , C08F4/65908 , C08F4/65912 , C08F4/6592 , C08F210/14 , C08F210/16 , C08F2420/01 , C08F2420/04 , C08F2500/03 , C08F2500/09 , C08F2500/11 , C08F2500/12 , C08F2500/13 , C08F2500/17 , C08F2500/18 , C08F2500/26 , C08J5/00 , C08J5/18 , C08J2323/06 , C08J2323/08 , C08J2323/20 , C08J2323/24 , C08J2423/08 , C08J2423/20 , C08J2423/24 , C08L23/08 , C08L23/14 , C08L23/20 , C08L2203/16 , C08L2205/025 , C08L2205/03 , C08L2205/06 , C08L2314/02 , C08L2314/06 , C08F2/42 , C08F2500/07
摘要： This disclosure relates to films comprising at least one layer of an ethylene interpolymer product. The ethylene interpolymer product comprises a first ethylene interpolymer, a second ethylene interpolymer and optionally a third ethylene interpolymer; wherein the ethylene interpolymer product has ≥0.03 terminal vinyl unsaturations per 100 carbon atoms and ≥3 parts per million (ppm) of a total catalytic metal; and optionally a Dilution Index, Yd, greater than 0. The disclosed ethylene interpolymer products have a melt index from about 0.4 to about 10 dg/minute, a density from about 0.900 to about 0.940 g/cm3, a polydispersity (Mw/Mn) from about 2 to about 12 and a CDBI50 from about 20% to about 98%. Further, the ethylene interpolymer products are a blend of at least two ethylene interpolymers; where one ethylene interpolymer is produced with a single-site catalyst formulation and at least one ethylene interpolymer is produced with a heterogeneous catalyst formulation.

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