Mitsui Chemicals, Inc.

Sharp Corporation

Kouichi Kizu

Keiji Okada

Sunil Krzysztof Moorthi

Masayoshi Yamaguchi

Masahiko Okamoto

Haruka Saito

Hideki Wasa

Futoshi Fujimura

Jiacheng He

Emi Oniki

Akira Sakai

Norio Kashiwa

Tomoaki Matsugi

Ryoji Mori

Shinichi Kojoh

Nobuo Kawahara

Munehito Funaya

Toshiyuki Hirose

Shingo Matsuo

Takanori Sueda

Hideyuki Kaneko

Tooru Tanaka

Kazuyuki Takimoto

Naritoshi Hirota

Ryouichi Seki

Michio Tsugawa

Satoshi Kawamoto

Nobuhisa Mikawa

Masakatsu Kasuya

Takayuki Okuno

Yasuyuki Soeda

Keisuke Endo

Hisahiro Kato

Masako Takamatsu

Atsushi Komoriya

Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an α-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an α-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.

Cyclic olefin-based copolymer, cyclic olefin-based copolymer composition, molded article, and medical container

Provided is a cyclic olefin-based resin composition including a cyclic olefin-based polymer (A), and a hindered amine compound (Y) that contains a piperidyl group represented by General Formula (1) and a carboxylic acid amide group represented by General Formula (2) within the same molecule.

Cyclic olefin-based resin composition, molded product, and optical component

Described is a cyclic olefin-based copolymer has a constitutional unit (A) derived from an &#x3b1;-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring. Also described is a medical container containing a cyclic olefin-based copolymer having a constitutional unit (A) derived from an &#x3b1;-olefin having 2 to 20 carbon atoms, a constitutional unit (B) derived from a cyclic olefin without an aromatic ring, and a constitutional unit (C) derived from a cyclic olefin having an aromatic ring.

A cyclic olefin polymer composition comprising: [A] a specific cyclic olefin polymer having a softening temperature (TMA) of 120 to 300&#xb0; C.; and [B] a specific cyclic olefin polymer having a glass transition temperature (Tg) of 50&#xb0; C. or lower, wherein the absolute value of the difference between n[A] and n[B] is 0.014 or less in which n[B] represents a refractive index of the cyclic olefin polymer [B] and n[A] represent that of the cyclic olefin polymer [A], and the component [A] is contained in an amount of 50 to 95 parts by weight and the component [B] is contained in an amount of 5 to 50 parts by weight (provided that the total amount of the components [A] and [B] is defined as 100 parts by weight).

Cyclic olefin polymer composition, use thereof, and cyclic olefin polymer

An optical resin comprises a copolymer of 4-methyl-1-pentene and at least one monomer selected from the group consisting of 3-methyl-1-pentene, 3-methyl-1-butene and 4,4-dimethyl-1-pentene. The content of a constituent unit (a) derived from 4-methyl-1-pentene is equal to or more than 60 mol % and equal to or less than 99 mol %, and the total content of a constituent unit (b) derived from at least one monomer selected from the group consisting of 3-methyl-1-pentene, 3-methyl-1-butene and 4,4-dimethyl-1-pentene is equal to or more than 1 mol % and equal to or less than 40 mol %.

Optical resin, optical resin composition, optical film, and film

A novel olefin-based polymer has excellent thermal resistance, as well as excellent balance among various properties. The olefin-based polymer is an olefin-based polymer comprising 50 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties: i) the diad isotacticity is 70% or greater, ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5, and iii) the intrinsic viscosity [&#x3b7;] is 0.5 (dl/g) or greater.

Olefin-based polymers and uses thereof

(i) A material is developed which modifies the rigidity, tensile elongation at break and impact resistance of resins such as a polypropylene resin when used as a modifier. The invention relates to an ethylene type ternary copolymer (A) comprising (i) an ethylene, propylene or 1-butene and a higher &#x3b1;-olefin having 6 to 20 carbon atoms, wherein the content of ethylene is 70 to 89 mol %, the content of propylene or 1-butene is 10 to 22 mol % and the content of a higher &#x3b1;-olefin having 6 to 20 carbon atoms is 1 to 11 mol % and the molar ratio of the higher-olefin having 6 to 20 carbon atoms to the structural units except for ethylene (either propylene or 1-butene and the higher &#x3b1;-olefin having 6 to 20 carbon atoms) is 1/10 to 5/10 and the ethylene type ternary copolymer has a density of 0.857 to 0.885 g/cm. The invention also relates to (ii) a propylene type resin composition comprising a propylene type polymer (B), the ethylene type ternary copolymer (A) and an inorganic filler (C).

Ethylene type ternary copolymer and propylene type resin composition

An ethylene-based copolymer is useful as a modifier for resins, e.g., polypropylene, and can be used in an ethylene/&#x3b1;-olefin copolymer composition containing the same ethylene-based copolymer. The inventive copolymer is characterize by: (a-1) having temperature (Tm) at the maximum peak in the endothermic curve, measured by a differential scanning calorimeter (DSC), of 40 to 90&#xb0; C., (a-2) containing the component soluble in decane at normal temperature at 1 to 70% b weight, and (a-3) containing the component soluble in decane at normal temperature which comprises (i) a recurring unit derived from ethylene and (ii) a recurring unit derived from an &#x3b1;-olefin of 4 or more carbon atoms, and in which a content of (i) the recurring unit derived from ethylene is 50 to 75% by mole.

Ethylene copolymer and ethylene/&#x3b1;-olefin copolymer composition and propylene polymer composition both containing the ethylene copolymer

A composition that has an ethylene/&#x3b1;-olefin copolymer (A), a blowing agent (B), and optionally, an organic peroxide and a crosslinking assistant. The ethylene/&#x3b1;-olefin copolymer (A) has an ethylene/&#x3b1;-olefin copolymer (A1) having a density of not less than 0.880 g/cmand less than 0.900 g/cmand MFR (190&#xb0; C.) of 0.1 to 50 g/10 min and an ethylene/&#x3b1;-olefin copolymer (A2) having a density of 0.900 to 0.930 g/cm, MFR (190&#xb0; C.) of 0.1 to 50 g/10 min and a main melting point peak at a position of not higher than 110&#xb0; C., in a specific ratio. A foamed product, obtained by heat treatment of the composition, may be further subjected to secondary compression. A laminate made of the foamed product and a layer made of a polyolefin, a polyurethane, a rubber, a leather or an artificial leather. Footwear or a footwear part made of the foamed product or the laminate.

Composition and uses thereof

Growing community of inventors

Sodegaura, Japan

Kouichi Kizu