Title:
プロピレン系重合体組成物および熱成形体
Document Type and Number:
Japanese Patent JP4549444
Kind Code:
B2
Abstract:
The present invention is to provide a propylene polymer composition capable of producing heat molded products having excellent glance between rigidity and impact resistance and to provide heat molded products produced from the composition, such as films and pipes. The propylene polymer composition comprises 10 to 90 % by weight of a propylene polymer (A) and 90 to 10 % by weight of a propylene polymer (B). The propylene polymer (A) has MFRA (measured at 230 DEG C under a load of 2.16 kg) of 0.001 to 8 g/10 min, Tm (measured by a differential scanning calorimeter) of 95 to 145 DEG C and a density (dA) of 885 to 905 kg/m<3>, and in this polymer, the content of constituent units derived from an alpha -olefin of 4 to 20 carbon atoms is in the range of 1.5 to 11 % by mol. The propylene polymer (B) has MFRB (measured at 230 DEG C under a load of 2.16 kg) of 0.1 to 600 g/10 min, Tm (measured by a differential scanning calorimeter) of 145 to 170 DEG C, a density (dB) of 905 to 916 kg/m<3>, and in this polymer, the content of constituent units derived from an alpha -olefin of 4 to 20 carbon atoms is in the range of 0 to 2 % by mol. The MFRA and the MFRB satisfy the relation 0.1 ≤ log(MFRB/MFRA) ≤ 6.1, and the dA and the dB satisfy the relation 2 ≤ dB-dA ≤ 31.
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Inventors:
Shinya Matsunaga
Akira Todo
Moriya Satoru
Akio Ishimoto
Tetsuhiro Matsumoto
Akira Todo
Moriya Satoru
Akio Ishimoto
Tetsuhiro Matsumoto
Application Number:
JP53075098A
Publication Date:
September 22, 2010
Filing Date:
January 09, 1998
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C08L23/10; C08L23/14
Foreign References:
| WO1994016009A1 |
Attorney, Agent or Firm:
Patent corporation ssinpat
Koji Makimura
Koji Makimura