公开(公告)号：US11613601B2

公开(公告)日：2023-03-28

申请号：US16493562

申请日：2018-03-12

申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

发明人： Hidekazu Yamada ,  Masahiro Yanagisawa

IPC分类号： C08F297/08 ,  C08K3/34 ,  C08L23/10

摘要： A heterophasic propylene polymerization material, including a propylene polymer component (I) and an ethylene-α-olefin copolymer component (II), the heterophasic propylene polymerization material satisfying features (i) to (v): (i) the heterophasic propylene polymerization material contains a xylene-soluble content by 20 wt % or more; (ii) xylene-soluble content in the heterophasic propylene polymerization material has a limiting viscosity [η]CXS not less than 5 dL/g; (iii) a melt flow rate of the propylene polymer component (I) is 70 g/10 min or more; (iv) MFR of the heterophasic propylene polymerization material is not less than 5 g/10 min; and (v) the number of gels of 100 μm or more in diameter on a sheet for counting gels, including the heterophasic propylene polymerization material, is 1000 or less per 100 cm2 of the sheet.

公开(公告)号：US11535735B2

公开(公告)日：2022-12-27

申请号：US16978513

申请日：2019-03-07

申请人： MITSUI CHEMICALS, INC.

发明人： Atsushi Sakuma ,  Kazutaka Tsuru ,  Kenichiro Okamura

IPC分类号： C08L23/14 ,  C08F4/654 ,  C08F210/06 ,  C08F297/08

摘要： The purpose of the present invention is to provide a propylene-based block copolymer, the deposition thereof on the inner wall of the polymerization vessel having been sufficiently inhibited. The propylene-based block copolymer of the present invention has a flowability evaluation value of 40% or less, the value being calculated with the following equation wherein X (sec) is the number of seconds over which 100 g of the copolymer having ordinary temperature falls from a stainless-steel funnel having an inner diameter of 11.9 mm and Y (sec) is the number of seconds over which 100 g of the copolymer which has been held at 80° C. for 24 hours under a load of 10 kg falls from the funnel having an inner diameter of 11.9 mm. Flowability evaluation value (%)={(Y/X)−1}×100.

公开(公告)号：US11492452B2

公开(公告)日：2022-11-08

申请号：US16642897

申请日：2018-08-23

申请人： ZEON CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Kousuke Isobe ,  Sadaharu Hashimoto ,  Atsushi Nozawa ,  Atsushi Noro ,  Takato Kajita ,  Yushu Matsushita

IPC分类号： C08F297/04 ,  C08J5/18 ,  C08F297/08

摘要： A main purpose of the present invention is to provide a multi-block copolymer composition having good elasticity and excellent stress relaxation properties, as well as small tension set. The present invention achieves the purpose by providing a multi-block copolymer composition obtained by a modification treatment, the composition including a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond to a block copolymer A; wherein the block copolymer A includes a block copolymer A1 having a specific primary structure and a block copolymer A2 having a specific primary structure, and the mass ratio (A1/A2) of the block copolymer A1 and the block copolymer A2 is 100/0 to 50/50.

公开(公告)号：US11427670B2

公开(公告)日：2022-08-30

申请号：US16348376

申请日：2017-11-15

申请人： BOREALIS AG

发明人： Peter Roos ,  Joy Cheng ,  Mark Jeruzal ,  Qizheng Duo ,  Erik Eriksson

IPC分类号： C08F297/08 ,  C08K3/04

摘要： A polymer composition and a process for the production of this composition comprising a base resin is disclosed herein. The base resin includes a very high molecular weight component, a low molecular weight component, and a high molecular weight component having a weight average molecular weight higher than the weight average molecular weight of the low molecular weight component but lower than the weight average molecular weight of the very high molecular weight component. An amount of the very high molecular weight component in the base resin is 0.5 to 8 wt %. The very high molecular weight component has a viscosity average molecular weight of greater than 1100 kg/mol. The composition has FRR21/5 of equal to or greater than 38, a melt flow rate MFR21 of equal to or greater than 6.5 g/10 min and a viscosity at a shear stress of 747 Pa (eta747) of 450 to 3000 kPas.

公开(公告)号：US11306173B2

公开(公告)日：2022-04-19

申请号：US16321567

申请日：2017-07-19

申请人： Dow Global Technologies LLC

发明人： Endre Szuromi ,  Justin M. Virgill ,  Robert F. Wendel ,  Jeffrey C. Munro ,  Gary R. Marchand ,  Edmund M. Carnahan ,  Kim L. Walton

IPC分类号： C08F297/08

摘要： Semi-crystalline, thermoplastic polyolefin block copolymers comprising: (A) A first polyolefin A block comprising isotactic poly(1-butene) (iPB); (B) A polyolefin B block comprising an ethylene and/or alpha-olefin/1-butene copolymer or terpolymer; and (C) A second polyolefin A block comprising isotactic poly(1-butene) (iPB); the A and B blocks bonded to one another to form a block copolymer in which the first and second polyolefin A blocks are joined to and separated by the polyolefin B block. In one embodiment the polyolefin block copolymer is a BAB block copolymer.

公开(公告)号：US11279780B2

公开(公告)日：2022-03-22

申请号：US16303004

申请日：2017-05-26

申请人： CORNELL UNIVERSITY ,  REGENTS OF THE UNIVERSITY OF MINNESOTA

发明人： Geoffrey Coates ,  James Eagan ,  Anne Lapointe ,  Frank S. Bates

IPC分类号： C08F210/06 ,  C08F4/64 ,  C08F210/02 ,  C08F297/08 ,  B32B27/32 ,  C08L23/06 ,  C08L23/14 ,  C08L53/00 ,  C09J153/00 ,  B32B27/08 ,  B32B27/12 ,  B32B7/12

摘要： A semicrystalline multiblock copolymer includes alternating blocks of semicrystalline isotactic polypropylene (iPP) and semicrystalline polyethylene (PE), having a block arrangement according to formula (I): (iPPw)p(PEx)(iPPy)m(PEz)n   (I), wherein p is 0 or 1; m is 0 or 1; n is 0 or 1; the sum of p, m, and n is 1, 2, or 3; and the sum of w, x, y, and z is greater than or equal to 40 kg/mol, with the provisos that: when m and n are 0, the sum of w and x is greater than or equal to 140 kg/mol; and when p and n are 0, the sum of y and x is greater than or equal to 140 kg/mol. Related compositions and methods are also provided.

公开(公告)号：US20210371570A1

公开(公告)日：2021-12-02

申请号：US16977943

申请日：2018-12-21

申请人： AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

发明人： Bun Yeoul LEE ,  Sung Dong KIM ,  Su Jin GWON ,  Tae Hee KIM

IPC分类号： C08F297/08 ,  C08F4/34 ,  C08F4/50 ,  C08F2/06 ,  C08F2/38 ,  C08F210/16 ,  C08F110/06

摘要： The present invention relates to a method for preparing a polyolefin block copolymer, the method comprising: a first step of coordination polymerization of an olefin monomer with a transition metal catalyst in the presence of organozinc; and a second step of continuously adding a diacyl peroxide compound to perform polymerization, and to a polyolefin block copolymer prepared therefrom.

公开(公告)号：US20210032397A1

公开(公告)日：2021-02-04

申请号：US17045912

申请日：2019-04-09

申请人： MITSUI CHEMICALS, INC.

发明人： Masakazu TANAKA ,  Toyoaki SASAKI ,  Tomoaki MATSUGI ,  Sadahiko MATSUURA ,  Naoto MATSUKAWA ,  Masatoshi CHINAKA

IPC分类号： C08F297/08

摘要： A 4-methyl-1-pentene polymer particle (X) which satisfies the following requirements (X-a), (X-b) and (X-c): (X-a) being composed of a 4-methyl-1-pentene polymer which has a content of a constitutional unit derived from 4-methyl-1-pentene being 30.0 to 99.7% by mol, and a content of a constitutional unit derived from at least one olefin selected from ethylene and an α-olefin having 3 to 20 carbon atoms (except for 4-methyl-1-pentene) being 0.3 to 70.0% by mol; (X-b) having, when measured in a cross fractionation chromatograph apparatus (CFC) using an infrared spectrophotometer as a detector part, at least one peak A of an amount of a component eluted present in the range of 100 to 140° C., and at least one peak B of an amount of a component eluted present at lower than 100° C.; and (X-c) having a meso diad fraction (m) measured by 13C-NMR falling within the range of 95.0 to 100%.

公开(公告)号：US20200255607A1

公开(公告)日：2020-08-13

申请号：US16642897

申请日：2018-08-23

申请人： ZEON CORPORATION ,  NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY

发明人： Kousuke ISOBE ,  Sadaharu HASHIMOTO ,  Atsushi NOZAWA ,  Atsushi NORO ,  Takato KAJITA ,  Yushu MATSUSHITA

IPC分类号： C08J5/18 ,  C08F297/08

摘要： A main purpose of the present invention is to provide a multi-block copolymer composition having good elasticity and excellent stress relaxation properties, as well as small tension set. The present invention achieves the purpose by providing a multi-block copolymer composition obtained by a modification treatment, the composition including a block copolymer B formed by introducing a functional group capable of forming a non-covalent bond to a block copolymer A; wherein the block copolymer A includes a block copolymer A1 having a specific primary structure and a block copolymer A2 having a specific primary structure, and the mass ratio (A1/A2) of the block copolymer A1 and the block copolymer A2 is 100/0 to 50/50.

公开(公告)号：US20180127559A1

公开(公告)日：2018-05-10

申请号：US15572873

申请日：2016-03-28

申请人： JSP Corporation

发明人： Shota TAKAGI ,  Masaharu OIKAWA

IPC分类号： C08J9/18 ,  C08J9/224 ,  C08J9/228 ,  C08F297/08

CPC分类号： C08J9/18 ,  C08F210/16 ,  C08F297/086 ,  C08J9/122 ,  C08J9/224 ,  C08J9/228 ,  C08J9/232 ,  C08J2201/026 ,  C08J2203/06 ,  C08J2205/06 ,  C08J2207/00 ,  C08J2323/08 ,  C08J2353/00 ,  C08L53/00

摘要： An object of the present invention is to provide expanded beads capable of producing an expanded beads molded article that is excellent in in-mold moldability and is excellent with good balance in lightweight property, flexibility, repulsion, restorability, and tensile characteristics, and an expanded beads molded article using the expanded beads. For achieving the object, the present invention provides crosslinked expanded beads produced by crosslinking and expanding particles containing a multi-block copolymer containing a polyethylene block and an ethylene-α-olefin copolymer block, the multi-block copolymer having a melt flow rate of from 2 to 10 g/10 min at 190° C. and a load of 2.16 kg, and a Shore A hardness of from 65 to 90 measured according to ASTM D2240, the crosslinked expanded beads having a gel fraction of from 30 to 60% by a hot xylene extraction method. The expanded beads molded article of the present invention is produced by subjecting the crosslinked expanded beads of the present invention, to in-mold molding. The expanded beads molded article of the present invention may have an apparent density of from 40 to 150 g/L.