公开(公告)号：US20250019475A1

公开(公告)日：2025-01-16

申请号：US18904129

申请日：2024-10-02

Applicant: Univation Technologies, LLC

Inventor： Bo Liu ,  Yi Zhang ,  Ayush A. Bafna ,  François Alexandre ,  Kevin R. Gross

IPC: C08F210/16 ,  B29C48/00 ,  B29C48/10 ,  B29K23/00 ,  B29K105/00 ,  C08F210/08 ,  C08J5/18

Abstract: A unimodal ethylene-co-1-butene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of shear thinning and melt elasticity properties. A blown film consisting essentially of the unimodal ethylene-co-1-butene copolymer. A method of synthesizing the unimodal ethylene-co-1-butene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-butene copolymer.

公开(公告)号：US12173096B2

公开(公告)日：2024-12-24

申请号：US17047742

申请日：2019-05-08

Applicant: Univation Technologies, LLC

Inventor： Bo Liu ,  Yi Zhang ,  Ayush A. Bafna ,  François Alexandre ,  Kevin R. Gross

IPC: C08F210/16 ,  B29C48/00 ,  B29C48/10 ,  C08J5/18 ,  B29K23/00 ,  B29K105/00 ,  C08F210/08

Abstract: A unimodal ethylene-co-1-butene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of shear thinning and melt elasticity properties. A blown film consisting essentially of the unimodal ethylene-co-1-butene copolymer. A method of synthesizing the unimodal ethylene-co-1-butene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-butene copolymer.

公开(公告)号：US12152095B2

公开(公告)日：2024-11-26

申请号：US17310700

申请日：2020-03-04

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bruce J. Savatsky ,  Brian R. Greenhalgh ,  Joseph A. Moebus ,  Aaron C. McGinnis ,  Ryan W. Impelman ,  Anne A. Bernard-Brunel

IPC: C08F210/16 ,  B01J8/18 ,  B01J19/00 ,  B01J19/24 ,  C08F2/34 ,  C08F10/02 ,  C08F110/02 ,  C08F210/06 ,  C08F210/08

Abstract: The present disclosure relates to processes for production of polyolefins from olefin monomer(s) in a gas phase reactor using condensing agent(s) (CAs), and in particular relates to controlling condensed phase cooling in a gas phase reactor used to polymerize olefin monomer(s). The method may include introducing first and second condensing agent(s) into the reactor at ratio(s) determined by ascertaining a stick limit for the first condensing agent, calculating an equivalence factor relating the first and second condensing agents, ascertaining total allowable condensing agent, and calculating amount of the first condensing agent removed and replaced by the second condensing agent. The method may further include calculating the dew point limit of a gas phase composition including olefin monomer(s) as well as the first and second condensing agents; and determining if introducing a mixture comprising the olefin monomer(s) and the condensing agent composition would exceed the calculated dew point limit.

公开(公告)号：US20240158549A1

公开(公告)日：2024-05-16

申请号：US18279864

申请日：2022-03-03

Applicant: MITSUI CHEMICALS, INC.

Inventor： Manabu ITAKURA ,  Kiminori NODA ,  Makoto EGAWA ,  Yuki KAI ,  Nozomi KAMIYA ,  Hiroshi HOYA ,  Takahiro MIZUMA

IPC: C08F210/08 ,  C08J5/18 ,  C08L23/20 ,  C09J123/20

CPC classification number: C08F210/08 ,  C08J5/18 ,  C08L23/20 ,  C09J123/20 ,  C08J2323/20 ,  C08J2423/14 ,  C08L2205/02

Abstract: A 1-butene/ethylene copolymer (A) satisfying the following requirements (A1) to (A5). (A1) a content of constituent units (i) derived from 1-butene is in a range of 70 to 99.9 mol %, and a content of constituent units (ii) derived from ethylene is in a range of 0.1 to 30 mol % [provided that a total of constituent units (i) and constituent units (ii) is 100 mol %]; (A2) an isotactic pentad fraction (mmmm) calculated by 13C-NMR is in a range of 80 to 99.9%; (A3) an intrinsic viscosity [η] measured in decalin at 135° C. is in a range of 0.7 to 2.0 dl/g; (A4) a melt flow rate (MFR) measured at 190° C. and a load of 2.16 kg in accordance with ASTM D1238 is 1 to 100 g/10 min; and (A5) a melting peak is not observed during second temperature raising in calorimetry with a differential scanning calorimeter (DSC).

公开(公告)号：US20230391907A1

公开(公告)日：2023-12-07

申请号：US18248996

申请日：2021-10-15

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

Inventor： Jin ZHAO ,  Junling ZHOU ,  Xianzhi XIA ,  Yuexiang LIU ,  Tao LIU ,  Yongtai LING ,  Weili LI ,  Futang GAO ,  Long CHEN ,  Yang TAN ,  Chunhong REN

IPC: C08F210/06 ,  C08F210/08 ,  C08F4/646 ,  C08F4/654 ,  C08F4/643 ,  C08F4/649

CPC classification number: C08F210/06 ,  C08F210/08 ,  C08F4/6465 ,  C08F4/6543 ,  C08F4/6435 ,  C08F4/6437 ,  C08F4/6497

Abstract: A copolymer contains, based on the total amount of structural units of the copolymer, 90-99 mol % of propylene structural units and 1-10 mol % of butene structural units. The xylene solubles content of the copolymer is less than or equal to 4 wt %, and preferably less than or equal to 3 wt %. The propylene-butene copolymer is substantially free of fraction having a molecular weight lower than 1000. The copolymer has a melt flow index of greater than or equal to 20 g/10 min as measured at 230° C. under a load of 2.16 kg. The propylene-butene copolymer has a high melt flow index and few xylene solubles, and does not contain a phthalate-type plasticizer, and can be used in fields such as food and medical and health services.

公开(公告)号：US11725100B2

公开(公告)日：2023-08-15

申请号：US15931296

申请日：2020-05-13

Applicant: Braskem S.A.

Inventor： Tadeu Mezacasa Forest ,  Gustavo Gori Lusa

IPC: C08L23/12 ,  C08F2/34 ,  C08F210/02 ,  C08F210/08

CPC classification number: C08L23/12 ,  C08F2/34 ,  C08F210/02 ,  C08F210/08 ,  C08F2800/10 ,  C08L2205/02 ,  C08L2205/22 ,  C08L2207/02

Abstract: Heterophasic polypropylene copolymer compositions and methods of making the same include a matrix phase of a random polypropylene-based copolymer; and an elastomeric rubber phase dispersed in the matrix phase, wherein the elastomeric rubber phase includes propylene and one or more comonomers and has a viscosity index ratio, relative to a viscosity index of the random polypropylene-based copolymer, that ranges from 0.3 to 1.1; and wherein an average particle size of the dispersed elastomeric rubber phase is less than 300 nm. Methods include dispersing an elastomeric rubber phase that includes propylene and one or more comonomers into a matrix phase of a random polypropylene-based copolymer, wherein the elastomeric rubber phase has a viscosity index ratio, relative to a viscosity index of the random polypropylene-based copolymer that ranges from 0.3 to 1.1.

公开(公告)号：US11591455B2

公开(公告)日：2023-02-28

申请号：US16499356

申请日：2018-04-06

Applicant: Borealis AG

Inventor： Anna Hjärtfors ,  Yi Liu ,  Victor Sumerin ,  Joseph Thorman

IPC: C08F10/02 ,  C08F2/00 ,  C08F210/08 ,  C08F4/649 ,  C08F4/651 ,  C08F4/655 ,  C08K3/013 ,  C08L23/04 ,  C08L23/22 ,  H01B3/44 ,  C08K3/04

Abstract: The present invention relates to a cable jacket composition comprising a multimodal olefin copolymer, wherein said olefin copolymer has a density of 0.935-0.960 g/cm3 and MFR2 of 1.5-10.0 g/10 min and comprises a bimodal polymer mixture of a low molecular weight homo- or copolymer and a high molecular weight copolymer wherein the composition has ESCR of at least 2000 hours and wherein the numerical values of cable wear index and composition MFR2 (g/10 min) follow the correlation: Wear index

公开(公告)号：US11584814B2

公开(公告)日：2023-02-21

申请号：US17046038

申请日：2019-07-04

Applicant: LG Chem, Ltd.

Inventor： Yutaek Sung ,  Youn Sun Nam ,  Choong Hoon Lee ,  Young Hoon Na ,  Jeongyong Lee ,  Hyojoon Lee

IPC: C08F210/02 ,  C08F210/08 ,  C08F2/44

Abstract: Provided are an ethylene-vinyl acetate copolymer having a high degree of crosslinking by controlling a temperature difference in an autoclave reactor and an input ratio of an initiator during polymerization, even though a reduced amount of a crosslinking agent is used, and a preparation method thereof.

公开(公告)号：US20230046086A1

公开(公告)日：2023-02-16

申请号：US17792003

申请日：2021-01-07

Applicant: Borealis AG

Inventor： Mohammad AL-HAJ ALI ,  Noureddine AJELLAL

IPC: C08F2/06 ,  C08F210/02 ,  C08F210/08

Abstract: The present invention relates to a process for polymerizing ethylene-1-butene copolymers in a solution polymerization process by firstly modelling polymer systems for solution polymerization of ethylene-1-butene copolymers and then transferring pressure and temperature conditions from said modelled polymer systems to a solution polymerization process to ensure that the polymerized ethylene-1-butene copolymer is completely solved in the solvent during the polymerization process.

公开(公告)号：US20220409447A1

公开(公告)日：2022-12-29

申请号：US17901907

申请日：2022-09-02

Applicant: The Procter & Gamble Company

Inventor： Robert Haines TURNER ,  Torsten LINDNER ,  Matthias MORAND ,  Benjamin John KUTAY ,  Holger BERUDA ,  Ekaterina PONOMARENKO ,  William L. BUNNELLE ,  Jon FAGERNESS ,  Nick FOWLER ,  Bill TURNER ,  Andres SUSTIC ,  Enrico BUENACOSA ,  Steve OETTING ,  Steve McHANEY ,  J.J. DeCAIR

IPC: A61F13/515 ,  A61F13/539 ,  A61F13/511 ,  C09J4/06 ,  C08F210/08 ,  C08F210/06 ,  A61F13/514 ,  A61F13/15

Abstract: Described herein is an absorbent article. The absorbent article includes an assembly of components and an adhesive composition joining at least two of the assembly of components together. The adhesive composition includes from about 50 wt. % to about 80 wt. % of one or more copolymers and a blend of one or more heterophase copolymers. The one or more copolymers include from about 30 mole % to about 70 mole % of monomer units selected from ethylene. 1-butene, and mixtures thereof. The one or more copolymers also include from about 30 mole % to about 70 mole % of propene monomer units. The adhesive composition is free of polyisobutylene and has a viscosity of from about 2,000 mPa·s to about 11,500 mPa·s at 150° C.