公开(公告)号：US20220275114A1

公开(公告)日：2022-09-01

申请号：US17630791

申请日：2020-07-28

申请人： Dow Global Technologies LLC

发明人： Linfeng Chen ,  Andrew T. Heitsch ,  Jeffrey A. Sims ,  David M. Pearson ,  Kurt F. Hirsekorn

IPC分类号： C08F4/6592 ,  C08F4/659 ,  C08F4/655 ,  C08F2/04

摘要： The catalyst system includes a heterogeneous procatalyst and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula Cp2TiX2, In formula Cp2TiX2, each Cp is a cyclopentadienyl substituted with at least one R1, wherein R1 is (C1-C10)alkyl; and each X is independently a halogen atom.

公开(公告)号：US20220185920A1

公开(公告)日：2022-06-16

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

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：US11359040B2

公开(公告)日：2022-06-14

申请号：US16463325

申请日：2017-09-27

申请人： LOTTE CHEMICAL CORPORATION

发明人： Byung Hun Chae ,  Joon Keun Min ,  Sung Won Jung ,  Youn Jin Hong ,  Hyun Yul Woo

IPC分类号： C07F17/00 ,  C08F4/6592 ,  C08F210/16 ,  C08F2/38 ,  C08F4/642 ,  C07F19/00 ,  C08F4/659 ,  C08F4/14

摘要： Disclosed are a polyolefin having a high molecular weight by using a novel metallocene catalyst; a method for preparing the polyolefin by using the same; and a method for preparing an ethylene-propylene random copolymer having high molecular weight, high syndiotacticity and small crystal size, thereby providing injection molded articles with improved transparency. The present invention provides a transition metal compound represented by chemical formula 1:

公开(公告)号：US20220177798A1

公开(公告)日：2022-06-09

申请号：US17442131

申请日：2019-03-26

申请人： MITSUI CHEMICALS, INC.

发明人： Shota ABE

IPC分类号： C10M107/04 ,  C10M107/06 ,  C10M105/32 ,  C10M111/02 ,  C10M111/04 ,  C08F210/02 ,  C08F210/06 ,  C08F2/06 ,  C08F4/6592 ,  C08F4/659

摘要： A lubricating oil composition for hydraulic oils including 10 to 99% by mass of a lubricant base oil (A) with a kinematic viscosity at 100° C. of 1 to 14 mm2/s, a viscosity index of 100 or more, and a pour point of 0° C. or lower, and 90 to 1% by mass of a liquid random copolymer (B) of ethylene and α-olefin prepared using a specific catalyst, wherein the total amount of (A) and (B) is 100% by mass, and having a kinematic viscosity at 100° C. of 10 to 300 mm2/s.

公开(公告)号：US20220169938A1

公开(公告)日：2022-06-02

申请号：US17442125

申请日：2019-03-26

申请人： MITSUI CHEMICALS, INC.

发明人： Shota ABE

IPC分类号： C10M107/04 ,  C10M107/06 ,  C10M135/22 ,  C10M107/32 ,  C08F210/16 ,  C08F210/06 ,  C08F2/06 ,  C08F4/6592 ,  C08F4/659

摘要： The present invention is a lubrication oil composition which is characterized by containing (A) a liquid random copolymer of ethylene and an α-olefin, which is produced by a specific method and (F) a sulfur-containing compound wherein at least one hydrocarbon group that is adjacent to a sulfur atom is a secondary or tertiary hydrocarbon group, while containing, as an optional component, (G) a polymer of an α-olefin having 3 to 6 carbon atoms, and which is also characterized in that: the kinematic viscosity at 40° C. is 450 to 51,000 mm2/s; the content of sulfur is 0.1 to 5 parts by weight; and the content of the component (G) is 0 to 15 parts by weight. This lubrication oil composition is especially suitable for gear oils and the like.

公开(公告)号：US20220169757A1

公开(公告)日：2022-06-02

申请号：US17600609

申请日：2020-03-27

申请人： HANWHA SOLUTIONS CORPORATION

发明人： Ranwha PARK ,  Seongyeon PARK ,  Hyunseung LEE ,  Wook JEONG

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

摘要： The present invention relates to a hybrid catalytic composition comprising different transition metal compounds, to a catalyst for olefin polymerization comprising the same, and to processes for preparing the same. Specifically, the present invention relates to a hybrid catalytic composition comprising different transition metal compounds capable of producing various polyolefins having excellent processability and mechanical properties, to a catalyst for olefin polymerization comprising the same, and processes for preparing the hybrid catalytic composition and the catalyst by adjusting the ratio of the transition metal compounds.

公开(公告)号：US20220169756A1

公开(公告)日：2022-06-02

申请号：US17437271

申请日：2020-03-05

申请人： Dow Global Technologies LLC

发明人： Andrew M. Camelio ,  Brad C. Bailey ,  Matthew D. Christianson ,  Robert DJ Froese ,  David D. Devore

IPC分类号： C08F4/6592 ,  C08F210/06 ,  C08F210/16 ,  C08F2/04

摘要： Embodiments of this disclosure include polymerization processes that include contacting propylene and/or one or more (C4-C12)α-olefins in a reactor including a catalyst system. The catalyst system comprises a metal-ligand complex according to formula (I).

公开(公告)号：US20220135779A1

公开(公告)日：2022-05-05

申请号：US17273687

申请日：2019-08-07

申请人： BOREALIS AG

发明人： Jingbo WANG ,  Markus GAHLEITNER ,  Klaus BERNREITNER ,  Peter NIEDERSÜSS ,  Pauli LESKINEN

IPC分类号： C08L23/12 ,  C08L23/20 ,  C08L23/08 ,  C08F4/6592 ,  C08L23/14 ,  B29C48/40 ,  B29C48/00 ,  B29C48/08

摘要： The present invention is directed to a polypropylene composition (P) comprising a copolymer (C) of propylene and 1-hexene comprising a first random propylene copolymer (A) of propylene and a 1-hexene, and a second random propylene copolymer (B) of propylene and 1-hexene having a higher 1-hexene content than the first random propylene copolymer (A) as well as a plastomer (PL) being an elastomeric copolymer of ethylene and at least one C4 to C10 α-olefin. Further, the present invention is directed to an article comprising said polypropylene composition (P) and the use of said polypropylene composition (P) as a sealing layer in a multi-layer film.

公开(公告)号：US20220127395A1

公开(公告)日：2022-04-28

申请号：US17571665

申请日：2022-01-10

申请人： Chevron Phillips Chemical Company LP

发明人： Jeremy M. Praetorius ,  Alfred E. Brown, Jr. ,  Yongwoo Inn ,  Youlu Yu ,  Qing Yang ,  Ashish M. Sukhadia

IPC分类号： C08F210/16 ,  B29C49/00 ,  C08F4/6592

摘要： Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ηE/3η at an extensional rate of 0.1 sec−1 from 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single or two atom bridged metallocene compound with two indenyl groups, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

公开(公告)号：US11312796B2

公开(公告)日：2022-04-26

申请号：US16843986

申请日：2020-04-09

申请人： LOTTE CHEMICAL CORPORATION

发明人： Joon Keun Min ,  Su Jeong Jeong ,  Hyun Yul Woo ,  Rai Ha Lee ,  Eun Hye Shin ,  Byung Hun Chae

IPC分类号： C08F4/6592 ,  C08F10/06 ,  C08F10/02

摘要： Disclosed are a novel metallocene catalyst and a method for preparing a polyolefin having a high molecular weight and a low melt index by using the same. The present invention provides a transition metal compound represented by formula 1.