Mitsui Chemicals, Inc.

Mitsu Chemicals, Inc.

Kouji Nagahashi

Yasushi Tohi

Shigenobu Ikenaga

Ryoji Mori

Takashi Nakagawa

Masahiko Okamoto

Hiromasa Marubayashi

Shiro Otsuzuki

Tomohiro Yamaguchi

Tatsuya Nakamura

Takashi Yukita

Yuichi Yamamura

Mayumi Hiwara

Naritoshi Hirota

Sunil Krzysztof Moorthi

Takayuki Kajihara

Junpei Tanaka

Nobukazu Yamahira

Masashi Higuchi

Kazunori Kamio

Shiegenobu Ikenaga

Miyuki Konno

Yasuo Ichiki

Tatsuya c/o Mitsui Chemicals Inc Nakamura

Hiromasa c/o Mitsui Chemicals Inc Marubayashi

Yasuo c/o Prime Polymer Co Ltd Ichiki

Shigenobu c/o Mitsui Chemicals Inc Ikenaga

Takashi c/o Mitsui Chemicals Inc Nakagawa

Yasushi c/o Mitsui Chemicals Inc Tohi

Masashi c/o Prime Polymer Co Ltd Higuchi

Naritoshi c/o Mitsui Chemicals Inc Hirota

Yuichi c/o Mitsui Chemicals Inc Yamamura

Mayumi c/o Mitsui Chemicals Inc Hiwara

Takashi c/o Mitsui Chemicals Inc Yukita

Masahiko c/o Mitsui Chemicals Inc Okamoto

Ryoji c/o Mitsui Chemicals Inc Mori

Miyuki c/o Mitsui Chemicals Inc Konno

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

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

Disclosed is a method for producing a syndiotactic propylene polymer having a syndiotactic pentad fraction (rrrr fraction) of not less than 85%, a melting point (Tm) within the range of 145-170&#xb0; C. and a limiting viscosity [&#x3b7;] within the range of 0.1-10 dl/g by a solution polymerization method using a group 4 crosslinked metallocene compound, which is not accompanied by precipitation of a polymer (excluding white turbidity). Also disclosed is a production method which enables to continuously perform such a production.

Process for production of syndiotactic propylene polymer

A composition having excellent transparency, flexibility, rubber elasticity, thermal resistance, impact resistance, abrasion resistance and the like, a composition having excellent rigidity and impact resistance as well as excellently balanced in whitening resistance, abrasion resistance and heat sealability, and a composition having excellent rubbery properties, thermal resistance, abrasion resistance and flexibility are provided. A composition comprising a specific propylene&#x2022;&#x3b1;-olefin copolymer for which, in a signal chart measured byC-NMR and predetermined such that the peak present at the highest magnetic field among the signals originating from CH (methine) of the constituent unit derived from an &#x3b1;-olefin having 4 to 20 carbon atoms is to be at 34.4 ppm, an absorption intensity A at about 22.0 to 20.9 ppm and an absorption intensity B at about 19.0 to 20.6 ppm satisfy the following relational expressions (i) and (ii) with respect to an absorption intensity C at about 19.0 to 22.0 ppm, which is assignable to propylene methyl:()&#xd7;100&#x2266;8&#x2003;&#x2003;(i), and()&#xd7;100&#x2267;60&#x2003;&#x2003;(ii),

&#x3b1;-olefin-based polymer composition, molded product formed from the composition, and novel polymer

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Kuga-gun, Japan

Kouji Nagahashi