Mitsui Chemicals, Inc.

Mitsu Chemicals, Inc.

Masahiko Okamoto

Yasushi Tohi

Ryoji Mori

Shigenobu Ikenaga

Takashi Nakagawa

Hiromasa Marubayashi

Shiro Otsuzuki

Tetsuji Kasai

Masakazu Tanaka

Takayuki Uekusa

Kouji Nagahashi

Yoshisada Tamo

Kyoko Kobayashi

Kouichi Kizu

Toyoaki Sasaki

Sunil Krzysztof Moorthi

Mayumi Hiwara

Naritoshi Hirota

Haruka Saito

Futoshi Fujimura

Hideki Wasa

Makoto Nakano

Takahiro Akashi

Shinichi Nagano

Emi Oniki

Jiacheng He

Tatsuya Nakamura

Mamoru Takahashi

Koji Endo

Kotaro Ichino

Takashi Yukita

Yuichi Ito

Munehito Funaya

Sadahiko Matsuura

Koji Kawai

Motoyasu Yasui

Hirokazu Tanaka

Yuichi Yamamura

Takayuki Kajihara

Hayato Kurita

Masakazu Jitsukata

Toru Takehara

Kenji Iwamasa

Kazuyoshi Kaneko

Tomohiro Yamaguchi

Ryohei Shiga

Yasuo Funabara

Masashi Higuchi

Yoshiyuki Hirase

Keiko Fukushi

Yoshisada Fukagawa

Hisanori Hashimoto

Akihiko Iwashita

Yasuhito Tsugane

Kenkichi Yoshida

Kenjiro Takamine

Takanori Tada

Miyuki Konno

Shiegenobu Ikenaga

Yasuo Ichiki

Mayumi Yasuda

Kazuki Mita

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

An adhesive resin composition including a propylene polymer (A), an ethylene polymer (B), and a thermoplastic resin (C) including a copolymer containing not less than 60 mol % and not more than 99 mol % of structural units derived from 4-methyl-1-pentene, and not less than 1 mol % and not more than 40 mol % of structural units derived from a C2-C20 α-olefin other than 4-methyl-1-pentene, these structural units representing total 100 mol % of the copolymer, the thermoplastic resin (C) showing a melting point Tm of not more than 199° C. or showing substantially no melting point as analyzed with a differential scanning calorimeter (DSC). The total of the components (A), (B) and (C) includes 45 to 75 parts by mass of the component (A), 5 to 20 parts by mass of the component (B), and 15 to 45 parts by mass of the component (C).

Adhesive resin compositions and laminates

A resin composition including a 4-methyl-1-pentene copolymer (A) that satisfies particular requirements and a 4-methyl-1-pentene copolymer (B) that satisfies particular requirements, in which the content of the copolymer (A) is 10 to 95 parts by mass and the content of the copolymer (B) is 90 to 5 parts by mass with respect to 100 parts by mass of the total content of the copolymers (A) and (B).

Resin composition containing 4-methyl-1-pentene copolymer, and film for capacitors

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 4-methyl-1-pentene polymer having: a unit derived from 4-methyl-1-pentene of 90 to 100% by mol; a unit selected from ethylene and an &#x3b1;-olefin, other than 4-methyl-1-pentene, having 3 to 20 carbon atoms of 0 to 10% by mol; and the polymer satisfying the following requirements: (a) a meso diad fraction measured byC-NMR within the range of 98 to 100%; (b) a ratio of Z-average molecular weight Mz to weight-average molecular weight Mw measured by GPC within the range of 2.5 to 20; (c) a ratio of weight-average molecular weight Mw to number-average molecular weight Mn measured by GPC within the range of 3.6 to 30; (d) a melt flow rate measured under conditions of 260&#xb0; C. and a 5 kg load (ASTM D1238) within the range of 0.1 to 500 g/10 min; and (e) an amount of a decane-soluble portion at 23&#xb0; C. is 5.0% by mass or less.

4-methyl-1-pentene polymer, resin composition and molded article

A polyester sheet including a polyester (A), a 4-methyl-1-pentene polymer (B) having a specific heat of fusion and a meso diad fraction (m) of 98.5 to 100%, and a compatibilizing agent (C), wherein content proportions of the (A), (B), and (C) are 60 to 98.9 parts by mass for (A), 1 to 25 parts by mass for (B), and 0.1 to 15 parts by mass for (C), when a total content of (A), (B), and (C) is set as 100 parts by mass, and wherein (B) satisfies the requirements (a) to (d) described herein.

Polyester sheet

The present invention provides a 4-methyl-1-pentene/&#x3b1;-olefin copolymer being excellent in lightness, stress absorption, stress relaxation, vibration damping properties, scratch resistance, abrasion resistance, toughness, mechanical properties and flexibility, having no stickiness during molding operation and being excellent in the balance among these properties; a composition comprising the polymer; and uses thereof. The 4-methyl-1-pentene/&#x3b1;-olefin copolymer (A) of the present invention satisfies specific requirements, and comprises 5 to 95 mol % of a structural unit (i) derived from 4-methyl-1-pentene, 5 to 95 mol % of a structural unit (ii) derived from at least one kind of &#x3b1;-olefin selected from &#x3b1;-olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene and 0 to 10 mol % of a structural unit (iii) derived from a non-conjugated polyene, provided that the total of the structural units (i), (ii), and (iii) is 100 mol %.

4-methyl-1-pentene/&#x3b1;-olefin copolymer, composition comprising the copolymer and 4-methyl-1-pentene copolymer composition

To provide a 4-methyl-1-pentene/olefin (co)polymer composition which is excellent in transparency and heat resistance and is excellent also in elongation and toughness and to provide a molded product composed of the composition, a film composed of the composition, which is excellent in transparency, heat resistance and dimensional stability and has been uniformly stretched, and a hollow molded product composed of the composition, which is excellent in transparency, heat resistance and toughness and is excellent also in dimensional stability. The 4-methyl-1-pentene (co)polymer composition of the present invention comprises a specific 4-methyl-1-pentene (co)polymer (A) and a specific 4-methyl-1-pentene/&#x3b1;-olefin copolymer (B) in a specific ratio.

4-methyl-1-pentene (co)polymer composition, and film and hollow molded product composed of the composition

A catalyst for olefin polymerization, comprising: wherein in Formula [1-1], R, R, R, R, R, R, R, and Rare each selected from a hydrogen, a hydrocarbon group and a silicon-containing group; the four groups of R, R, R, and Rare not hydrogen atoms, and are each selected from a hydrocarbon group or a silicon-containing group; Rand Rare each a hydrocarbon group or the like, excluding a hydrogen atom and a methyl group; M is Ti, Zr or the like; Y is carbon or the like; Q is a halogen or the like; and j is an integer from 1 to 4.

Catalyst for olefin polymerization, method for producing olefin polymer, method for producing propylene-based copolymer, propylene polymer, propylene-based polymer composition, and use of those

To provide a propylene-based copolymer and a propylene-based copolymer composition, each of which has a high melt tension because it has a long-chain branched structure, exhibits excellent molding processability during molding, such as inflation molding, extrusion molding, blow molding, injection molding or vacuum forming, and is capable of favorably providing a foamed product having an excellent expansion ratio and excellent cell uniformity in the foaming stage. The propylene-based copolymer (A) of the present invention comprises 50 to 95% by mol of constituent units [i] derived from propylene, 4.9 to 49.9% by mol of constituent units [ii] derived from an &#x3b1;-olefin of 2 to 10 carbon atoms other than propylene and 0.1 to 10% by mol of constituent units [iii] derived from a non-conjugated polyene (with the proviso that the total amount of the constituent units [i], [ii] and [iii] is 100% by mol), and is characterized by satisfying specific requirements (a) and (c).

Propylene-based copolymer, propylene-based copolymer composition, molded product thereof and foamed product thereof, and production process therefor

The propylene-based polymer composition of the present invention includes This polymer composition is excellent in transparency, low-temperature impact resistance, and mechanical properties (flexibility or rigidity, etc.) and also excellent in heat resistance.

Propylene-based polymer composition, use thereof, and method for producing thermoplastic polymer composition

A material for vibration control of the invention includes a propylene polymer (A) containing a constitutional unit (a) derived from propylene in the proportion of 40 to 100 mol % and a constitutional unit (b) derived from &#x3b1;-olefin having 2 to 20 carbon atoms excluding propylene in the proportion of 60 to 0 mol % [provided that the total of (a) and (b) is 100 mol %], and having a melting point measured by DSC of 90&#xb0; C. or below or no observed melting point, and the material has excellent vibration controllability such as vibration damping property, vibration preventing property, sound insulating property, and sound absorbing property.

Material for vibration control, article for vibration control and multilayer laminate for vibration control

The present invention provides an ethylene polymer that has excellent fluidity and moldability as well as gives a molded product having excellent mechanical strength. The ethylene polymer of the present invention contains 0.02 to 1.50 mol % of a constitutional unit derived from &#x3b1;-olefin having 6 to 10 carbon atoms, and has the density of 945 to 975 kg/m, which satisfies both of the following requirements [1] and [2] simultaneously:

Ethylene polymer and use thereof

A polyolefin composition comprising an olefin-based thermoplastic elastomer which is superior to conventional olefin-based thermoplastic elastomers in scratch resistance and abrasion resistance and has excellent heat aging resistance is proposed. [Means for Solving the Problem] A polyolefin composition comprising a syndiotactic &#x3b1;-olefin-based copolymer (A), a polyolefin resin (B) (other than polybutene (C)), polybutene (C), and if necessary, an ethylene-based copolymer rubber (D).

Polyolefin composition

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Chiba, Japan

Masahiko Okamoto