Title:
ETHYLENIC POLYMER
Document Type and Number:
Japanese Patent JP3579391
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ethylenic polymer which is excellent in processibility represented by homogeneous stretchability, draw-down resistance, swellability, and extrudability and is excellent in mechanical properties represented by stiffness, impact resistance, and ESCR, especially an ethylenic polymer which is excellent in the balance between stiffness and ESCR in comparison with a known ethylenic polymer.
SOLUTION: This polymer is an ethylene homopolymer or a copolymer of ethylene with a 3-20C α-olefin and has a melt index (HLMI) of 0.1-1,000 g/10 min at 190°C under a load of 21.6 kg, a density (d) of 0.935-0.985 g/cm3, a relation of HLMI with d satisfying inequality (i): d≥0.00900×Log(HLMI)+0.951, and a relation of ESCR with a flexural modulus (M) satisfying inequality (ii): M≥-7,310×log(ESCR)+32,300.
Inventors:
Yoshiyuki Ishihama
Toshihiko Kanno
Masayuki Yamazaki
Akira Obata
Toshihiko Kanno
Masayuki Yamazaki
Akira Obata
Application Number:
JP2001387792A
Publication Date:
October 20, 2004
Filing Date:
December 20, 2001
Export Citation:
Assignee:
Japan Polypropylene Corporation
International Classes:
C08J5/00; C08F4/642; C08F4/646; C08F4/6592; C08F10/02; (IPC1-7): C08F10/02; C08F4/646; C08J5/00
Domestic Patent References:
| JP10139807A | ||||
| JP11166011A | ||||
| JP11255816A |
Attorney, Agent or Firm:
Hajime Hasegawa
Sumiko Matsuda
Kumi Kondo
Masaaki Minamino
Sumiko Matsuda
Kumi Kondo
Masaaki Minamino
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