The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2005
Filed:
Dec. 11, 2003
Mikio Hashimoto, Waki-cho, JP;
Takasi Ueda, Waki-cho, JP;
Masaaki Kawasaki, Waki-cho, JP;
Satoru Moriya, Waki-cho, JP;
Akira Mizuno, Waki-cho, JP;
Daisuke Fukuoka, Waki-cho, JP;
Junichi Imuta, Waki-cho, JP;
Keiji Hirose, Waki-cho, JP;
Junji Saito, Waki-cho, JP;
Yoshihisa Kiso, Waki-cho, JP;
Mikio Hashimoto, Waki-cho, JP;
Takasi Ueda, Waki-cho, JP;
Masaaki Kawasaki, Waki-cho, JP;
Satoru Moriya, Waki-cho, JP;
Akira Mizuno, Waki-cho, JP;
Daisuke Fukuoka, Waki-cho, JP;
Junichi Imuta, Waki-cho, JP;
Keiji Hirose, Waki-cho, JP;
Junji Saito, Waki-cho, JP;
Yoshihisa Kiso, Waki-cho, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A propylene polymer composition is prepared by mixing propylene homo- or co-polymer (A) obtained using a transition metal catalyst compound (h), defined herein, with a co-catalyst, e.g., organoaluminum oxy compound, with an olefin elastomer (D) and another olefin polymer (E), e.g., polyethylene. Alternatively, the combination of propylene polymer (A), olefin elastomer (D) and olefin polymer (E) is prepared by a multi-stage polymerization method. In both cases, the propylene homo- or co-polymer (A) may include a second propylene homo- or co-polymer (A') wherein the ratio of intrinsic viscosities of propylene polymers (A) and (A′) is in the range of 3 to 30. These propylene polymer compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, etc., and can be used in the fabrication of structural materials, films and sheets.