公开(公告)号：US20210061930A1

公开(公告)日：2021-03-04

申请号：US16957925

申请日：2019-01-09

申请人： LG Chem, Ltd.

发明人： Bog Ki Hong ,  Jin Young Park ,  Si Jung Lee ,  Yi Young Choi ,  Soung Hun Yoo ,  Sunghyun Park ,  Chang Woan Han ,  Sun Mi Kim

IPC分类号： C08F110/02 ,  C08L23/28 ,  C08L27/06 ,  C08F2/30 ,  C08F8/22 ,  C08F4/52 ,  C08F4/642 ,  C08F4/649 ,  C08F4/659 ,  C08F4/6592

摘要： The present disclosure relates to a method for preparing a polyolefin using a supported hybrid metallocene catalyst. According to the present disclosure, a polyolefin having a narrow molecular weight distribution can be prepared very effectively by introducing a cocatalyst in an optimum conent in the presence of a supported hybrid metallocene catalyst containing two or more metallocene compounds having a specific chemical structure. The polyolefin prepared according to the present disclosure exhibits excellent uniformity in chlorine distribution in polyolefin during chlorination, thereby significantly improving elongation of the chlorinated polyolefin, compatibility with PVC and impact reinforcing performance. Thus, it exhibits excellent chemical resistance, weather resistance, flame retardancy, processability and impact strength reinforcing effect, and can be suitably applied as an impact reinforcing agent for PVC pipes and window profiles.

公开(公告)号：US10934376B2

公开(公告)日：2021-03-02

申请号：US16160492

申请日：2018-10-15

申请人： ExxonMobil Chemical Patents Inc.

发明人： Dongming Li ,  Matthew W. Holtcamp ,  Ching-Tai Lue ,  Adriana S. Silva ,  David F. Sanders ,  Subramaniam Kuppuswamy ,  Matthew S. Bedoya

IPC分类号： C08F210/16 ,  C08J5/18 ,  C09K3/10 ,  C08F4/659 ,  C08F4/6592

摘要： Provided herein are polyethylene compositions with broad orthogonal composition distribution. The polyethylene compositions may comprise at least 65 wt % ethylene-derived units and from 0 to 35 wt % of C3 to C12 olefin comonomer-derived units, and furthermore may exhibit a reversed comonomer index (RCI,m) of 100 kg/mol or greater, a Tw1-Tw2 value of from −16 to −38° C., and an Mw1/Mw2 value of at least 0.9, such as 0.9 to 4. Also provided are processes for making the polyethylene compositions, as well as films made from the polyethylene compositions. Such films may feature superior film stiffness for a given polyethylene composition density, and accordingly such films in some embodiments have average MD/TD modulus and density satisfying the following equation: Avg. Modulus≥1.2*(C1*Density−C2), where C1 and C2 are constants, such as C1=2,065,292 and C2=1,872,345.

公开(公告)号：US10906998B2

公开(公告)日：2021-02-02

申请号：US16241498

申请日：2019-01-07

申请人： LG CHEM, LTD.

发明人： Kyung Seop Noh ,  Ji Ho Choi ,  Churl Young Park ,  Ki Soo Lee ,  Sang Jin Jeon ,  Hee Kwang Park ,  Won-Sang Lee ,  Ah Young Seo

IPC分类号： C08F210/16 ,  C08J5/18 ,  C09J123/16 ,  C08L23/14 ,  C08F4/659

摘要： The polypropylene copolymer according to the present invention has a low melting point and also is excellent in the low temperature heat sealing effect, transparency and strength, and the film prepared therefrom can be effectively used as a sealing layer of the non-stretched polypropylene-based film.

公开(公告)号：US10899855B2

公开(公告)日：2021-01-26

申请号：US16166224

申请日：2018-10-22

申请人： Chevron Phillips Chemical Company LP

发明人： Ashish M. Sukhadia ,  Max P. McDaniel ,  Errun Ding ,  Guylaine St. Jean ,  Qing Yang ,  Daniel G. Hert ,  Chung Ching Tso

IPC分类号： C08L23/08 ,  C08F210/16 ,  C08F4/6592 ,  C08F10/02 ,  C08J5/18 ,  C08F210/02 ,  C08F4/659 ,  C08F210/08 ,  C08F210/14

摘要： Disclosed herein are ethylene-based polymers produced using dual metallocene catalyst systems. These polymers have low densities, high molecular weights, and broad molecular weight distributions, as well as having the majority of the long chain branches in the lower molecular weight component of the polymer, and the majority of the short chain branches in the higher molecular weight component of the polymer. Films produced from these polymers have improved impact and puncture resistance.

公开(公告)号：US10894850B2

公开(公告)日：2021-01-19

申请号：US16312474

申请日：2017-07-03

申请人： BASELL POLIOLEFINE ITALIA S.R.L.

发明人： Roberta Marchini ,  Stefano Spataro ,  Emanuele Burgin ,  Roberta Pica

IPC分类号： C08F210/08 ,  C08F2/00 ,  C08F4/6592 ,  C08F10/08 ,  C08L23/20 ,  C09J123/20 ,  C08F2/38 ,  C08F4/659 ,  C08F210/16

摘要： A butene-1 polymer composition having MFR values of from 400 to 2000 g/10 min, measured according to ISO 1133 at 190° C. with a load of 2.16 kg, made from or containing A) a butene-1 homopolymer or a copolymer of butene-1 with a comonomer selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content of up to 5% by mole; B) a copolymer of butene-1 with a comonomer selected from the group consisting of ethylene and higher alpha-olefins, having a copolymerized comonomer content of from 6% to 20% by mole; wherein the composition having a total copolymerized comonomer content from 4% to 15% by mole, referred to the sum of A) and B), and a content of fraction soluble in xylene at 0° C. of 60% by weight or less, determined on the total weight of A) and B).

公开(公告)号：US10894843B2

公开(公告)日：2021-01-19

申请号：US16478692

申请日：2018-11-29

申请人： LG Chem, Ltd.

发明人： Seul Ki Im ,  Seungmi Lee ,  Ohjoo Kwon ,  Eunji Shin ,  Ki Soo Lee ,  Daesik Hong ,  Sung Ho Park ,  Youngsuk You ,  Jinyoung Lee

IPC分类号： C08F110/02 ,  C08F10/02 ,  C08F210/16 ,  C08F10/04 ,  C08F4/646 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/14 ,  C08J5/18

摘要： An olefin polymer capable of simultaneously satisfying excellent drop impact strength and transparency, a preparation method of the same, and a film using the same, can be provided. In an embodiment, an olefin polymer comprises a plurality of polymer chains, and satisfies the following conditions: i) each polymer chain of the plurality having an average number of short chain branches (SCBs) per 1000 carbon atoms of 20/1000C or more, wherein an SCB has C2 to C7 carbon atoms, ii) a molded film of the olefin polymer having a drop impact strength of 1500 g to 2400 g as measured in accordance with ASTM D1709A, wherein the molded film having a thickness of 100 μm, and iii) a molded film of the olefin polymer having a haze is 10% to 30% as measured in accordance with ASTM D1003, wherein the molded film having a thickness of 0.05 mm.

公开(公告)号：US10889663B2

公开(公告)日：2021-01-12

申请号：US16192493

申请日：2018-11-15

申请人： ExxonMobil Chemical Patents Inc.

发明人： Jian Yang ,  John R. Hagadorn ,  Gregory J. Karahalis ,  Timothy M. Boller ,  Evan J. Morris ,  Yan Jiang ,  Patrick Brant

IPC分类号： C07F17/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F4/649 ,  C08F210/02 ,  C08F210/14 ,  C08F4/659 ,  C08J5/18 ,  C08F2/34

摘要： The present disclosure relates to asymmetric ansa-metallocene catalyst compounds that include at least one indenyl ligand substituted at the 3-position with a C3-C40 α-branched alkyl, such as 1-methylethyl, 1-methylpropyl, 1-methylbutyl, 1-ethylbutyl, 1,3-dimethylbutyl, 1-methyl-1-ethylbutyl, 1,1-diethylbutyl, 1-propylpentyl, and the like. Catalyst systems prepared with the catalyst compounds, polymerization methods using such catalyst systems, and polyolefins made using the polymerization methods are also described.

公开(公告)号：US10882924B2

公开(公告)日：2021-01-05

申请号：US16337138

申请日：2017-09-29

申请人： SABIC GLOBAL TECHNOLOGIES B.V.

发明人： Jaiprakash Brijlal Sainani ,  Akhlaq Moman

IPC分类号： C08F4/651 ,  C08F110/06 ,  C07C271/16 ,  C07C271/22 ,  C08F4/654 ,  C08F4/659

摘要： The present invention relates to a procatalyst comprising the compound represented by formula A as an internal electron donor, Formula A wherein R is hydrogen or a methyl group, N is nitrogen atom; O is oxygen atom; and C is carbon atom. The present invention also relates to a process for preparing said polymerization procatalyst and to a polymerization catalyst system comprising said procatalyst, a co-catalyst and optionally an external electron donor. Furthermore, the present invention relates to a polyolefin obtainable by the process according to the present invention and to the use of the compound of formula A as in internal electron donor in catalysts for polymerization of olefins.

公开(公告)号：US10858465B2

公开(公告)日：2020-12-08

申请号：US16323991

申请日：2017-10-25

申请人： LG CHEM, LTD.

发明人： Jeong Kyu Lee ,  Pum Suk Park ,  In Young Song ,  Sung Joon Oh ,  Yi Young Choi ,  Soon Ho Sun

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

摘要： The present invention relates to an ethylene/alpha-olefin copolymer and, more particularly, to an ethylene/alpha-olefin copolymer that exhibits excellent environmental stress crack resistance by appropriately controlling the ratio of crystal structure domain and amorphous domain, and the like. The ethylene/alpha-olefin copolymer comprises an ethylene repeating unit and an alpha-olefin repeating unit, and has a crystal structure including a crystalline domain containing lamellar crystals and an amorphous domain containing a tie molecule that mediates bonding between the lamellar crystals. The lamellar crystal thickness (dc) of the ethylene/alpha-olefin copolymer as calculated from the result of Small Angle X-ray Scattering (SAXS) analysis is between 12.0 and 16.0 nm, the amorphous domain thickness (da) is between 4.0 and 5.3 nm, and the thickness ratio da/dc is between 0.3 and 0.4.

公开(公告)号：US10829569B2

公开(公告)日：2020-11-10

申请号：US15744513

申请日：2016-08-10

申请人： ExxonMobil Chemical Patents Inc.

发明人： John R. Hagadorn ,  Jo Ann M. Canich ,  Matthew W. Holtcamp ,  Patrick J. Palafox ,  Ramyaa Mathialagan

IPC分类号： C08F4/76 ,  C08F4/64 ,  C08F4/6592 ,  C08F10/02 ,  C08F8/30 ,  C08F8/42 ,  C08F4/659 ,  C08F110/02

摘要： Catalyst systems with single site transition metal complexes (such as pyridyldiamido transition metal complexes), an activator, and a metal hydrocarbenyl chain transfer agent (preferably an aluminum vinyl-transfer agent) are disclosed for use in alkene polymerization.