公开(公告)号：EP3660105A1

公开(公告)日：2020-06-03

申请号：EP18839085.0

申请日：2018-07-17

申请人： Showa Denko K.K. ,  Japan Polyethylene Corporation

发明人： KURODA, Junichi ,  OKUMURA, Yoshikuni ,  HAYASHI, Shinya ,  UEMATSU, Masahiro ,  HATTORI, Takaaki ,  YASUKAWA, Yuichiro

IPC分类号： C08L101/12 ,  B32B27/00 ,  C08F8/12 ,  C08L23/08 ,  C08L29/04

摘要： The present invention relates to a gas-barrier resin composition, including: a gas-barrier resin (A) having an oxygen permeability coefficient of 1.0×10 -14 (cm 3 ·cm/cm 2 ·s·Pa) or less; and a copolymer (B) containing monomer structural units represented by the formula (1), the formula (2), and the formula (3):

where: R 1 represents a hydrogen atom or a methyl group; R 2 represents a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom, a hydroxy group, an alkoxy group, or an amino group; l, m, and n represent numerical values representing molar proportions of the respective monomer structural units, and n may represent 0; and p represents an integer of from 1 to 4, wherein a ratio of a mass of the copolymer (B) to a total mass of the gas-barrier resin (A) and the copolymer (B) is from 1 mass% to 40 mass%. Preferred as the gas-barrier resin (A) are a vinyl alcohol-based resin (A1), a polyamide-based resin (A2), and a polyester-based resin (A3). The present invention can provide a resin composition ameliorated in low flexibility and low impact resistance, which are drawbacks of a gas-barrier resin, without impairing excellent gas barrier properties of the gas-barrier resin.

公开(公告)号：EP3932955A1

公开(公告)日：2022-01-05

申请号：EP20763295.1

申请日：2020-02-25

申请人： The University of Tokyo ,  Showa Denko K.K. ,  Japan Polyethylene Corporation

发明人： NOZAKI, Kyoko ,  KURODA, Junichi ,  HAYASHI, Shinya ,  OKUMURA, Yoshikuni ,  UEMATSU, Masahiro ,  MITSUSHIGE, Yusuke

IPC分类号： C08F10/00 ,  C08F4/80

摘要： The present invention provides: a catalyst which has high activity and enables the production of an olefin polymer that has a polar group; and a method for producing the polymer. A catalyst for olefin polymerization, which contains a metal complex represented by general formula (C1); and a method for producing an ethylene (co)polymer, wherein (1) ethylene is polymerized, (2) ethylene and an olefin having a polar group represented by general formula (1) are copolymerized, or (3) ethylene, an olefin having a polar group represented by general formula (1) and another monomer are copolymerized, with use of the above-described catalyst. (In the formulae, the symbols are as defined in the description; and at least one of R 6 and R 7 represents a 9-fluorenyl analogous group represented by general formula (2).)

公开(公告)号：EP3786196A1

公开(公告)日：2021-03-03

申请号：EP19793700.6

申请日：2019-03-07

申请人： The University of Tokyo ,  Showa Denko K.K. ,  Japan Polyethylene Corporation

发明人： NOZAKI, Kyoko ,  ITO, Shingo ,  KURODA, Junichi ,  OKUMURA, Yoshikuni ,  HAYASHI, Shinya ,  KOBAYASHI, Minoru ,  YASUKAWA, Yuichiro

IPC分类号： C08F210/02 ,  C08F4/70 ,  C08F218/10 ,  C07F9/50 ,  C07F15/00

摘要： The present invention pertains to a method for producing a copolymer of ethylene and an allyl monomer having a polar group represented by general formula (1), or a copolymer of ethylene, an allyl monomer having a polar group represented by general formula (1), and other monomers, wherein the copolymer is produced in the presence of a boron compound having a boron-hydrogen bond or a boron-carbon bond (for example, a compound represented by general formula (2)) by using a metal complex represented by general formula (C1) as a polymerization catalyst (the symbols in the formulas are as described in the description). According to the present invention, a copolymer of ethylene and an allyl monomer can be efficiently produced with high catalytic activity, wherein the copolymer has a polar group and can be used in various applications.

公开(公告)号：EP4400520A1

公开(公告)日：2024-07-17

申请号：EP22867171.5

申请日：2022-08-19

申请人： The University of Tokyo ,  Resonac Corporation ,  Japan Polyethylene Corporation

发明人： NOZAKI, Kyoko ,  KIMURA, Kento ,  KURODA, Junichi ,  HAYASHI, Shinya ,  NANJO, Shun ,  UEMATSU, Masahiro ,  SAKURAGI, Tsutomu

IPC分类号： C08F4/80 ,  C08F10/02

CPC分类号： Y02P20/52 ,  C08F4/80 ,  C08F10/02

摘要： Provided are a catalyst, which enables the production of a high molecular weight olefin polymer having a polar group and being usable for various applications at a high catalytic activity, and a method for producing such an olefin polymer. Use is made of, as a polymerization catalyst for an olefin having a polar group, a metal complex represented by general formula (C1) [wherein: M represents an element in group 10 of the periodic table; X represents a phosphorus atom (P) or arsenic atom (As); R5 to R11 are as described in claims; at least one of R6 and R7 is an aralkyl group represented by general formula (2) (wherein R12 to R21 are as described in claims); L represents an electron-donating ligand; and q is 0, 1/2, 1 or 2].