Title:
プロピレン系共重合体およびその用途
Document Type and Number:
Japanese Patent JP4675629
Kind Code:
B2
Abstract:
The present invention provides a propylene/1-butene random copolymer (PBR) having excellent flexibility, impact resistance, heat resistance and low-temperature heat-seal properties, a polypropylene composition containg the copolymer, a sheet, film or stretched film comprising the composition and a composite film having a layer of the composition. The propylene/1-butene random copolymer contains 60 to 90 mol% of propylene units and 10 to 40 mol% of 1-butene units and has a triad isotacticity of not less than 85% and not more than 97.5 %, a molecular weight distribution (Mw/Mn) of from 1 to 3, an intrinsic viscosity of from 0.1 to 12 dl/g, a melting point (Tm) of from 40 to 120°C, and satisfies the following relation
wherein Tm represents a melting point and M (mol%) represents a content of 1-butene constituent units. The invention, further, provides a transition metal compound useful as an olefin polymerization catalyst and an olefin polymerization catalyst containing the transition metal compound. The transition metal compound is represented by the following formula (2a):
wherein each of R 1 and R 3 is hydrogen, R 2 and R 4 are selected from a hydrocarbon group and silicon-containing group, R 5 to R 13 are selected from hydrogen, a hydrocarbon group and silicon-containing group, and adjacent substituent groups R 5 to R 12 may be linked to form a ring. R 14 is an aryl group, and R 13 and R 14 may be linked to form a ring. M is a Group 4 transition metal, Y is a carbon atom, Q is halogen, etc, and j is an integer of 1 to 4.
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Inventors:
Shigenobu Ikenaga
Keiji Okada
Yutaka Takayasu
Norihide Inoue
Hirotoshi Satoshi
Kaneyoshi Hiroshi
Funatoya Muneto
Koji Kawai
Nobuo Kawahara
Shinichi Kojo
Norio Kashiwa
Ryoji Mori
Keiji Okada
Yutaka Takayasu
Norihide Inoue
Hirotoshi Satoshi
Kaneyoshi Hiroshi
Funatoya Muneto
Koji Kawai
Nobuo Kawahara
Shinichi Kojo
Norio Kashiwa
Ryoji Mori
Application Number:
JP2004570194A
Publication Date:
April 27, 2011
Filing Date:
December 26, 2003
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C07F7/00; C08F210/06; C07F17/00; C08F4/64; C08F4/645; C08L23/12; C08L23/14; C08L23/16; C08F4/6592
Domestic Patent References:
| JP8283343A | ||||
| JP8208909A | ||||
| JP8176218A | ||||
| JP62119212A | ||||
| JP2000198892A | ||||
| JP2003049044A | ||||
| JP37008483B1 | ||||
| JP2002510358A |
Foreign References:
| WO2001027124A1 | ||||
| WO1999002569A1 |
Attorney, Agent or Firm:
Patent corporation ssinpat