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:
Sep. 28, 2010
Filed:
Jun. 09, 2005
Nobuo Kawahara, Sodegaura, JP;
Shinichi Kojoh, Ichihara, JP;
Shingo Matsuo, Chiba, JP;
Hideyuki Kaneko, Ichihara, JP;
Tomoaki Matsugi, Ichihara, JP;
Norio Kashiwa, Minato-ku, JP;
Munehito Funaya, Ichihara, JP;
Naritoshi Hirota, Ichihara, JP;
Tooru Tanaka, Ichihara, JP;
Toshiyuki Hirose, Ichihara, JP;
Nobuhisa Mikawa, Chiba, JP;
Kouichi Kizu, Ichihara, JP;
Keiji Okada, Ichihara, JP;
Nobuo Kawahara, Sodegaura, JP;
Shinichi Kojoh, Ichihara, JP;
Shingo Matsuo, Chiba, JP;
Hideyuki Kaneko, Ichihara, JP;
Tomoaki Matsugi, Ichihara, JP;
Norio Kashiwa, Minato-ku, JP;
Munehito Funaya, Ichihara, JP;
Naritoshi Hirota, Ichihara, JP;
Tooru Tanaka, Ichihara, JP;
Toshiyuki Hirose, Ichihara, JP;
Nobuhisa Mikawa, Chiba, JP;
Kouichi Kizu, Ichihara, JP;
Keiji Okada, Ichihara, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Abstract
A novel olefin-based polymer has excellent thermal resistance, as well as excellent balance among various properties. The olefin-based polymer is an olefin-based polymer comprising 50 to 100% by weight of a constituent unit derived from 4-methyl-1-pentene, and 0 to 50% by weight of a constituent unit derived from at least one olefin selected from olefins having 2 to 20 carbon atoms except 4-methyl-1-pentene, and having the following properties: i) the diad isotacticity is 70% or greater, ii) the ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) as measured by gel permeation chromatography (GPC) is in the range of 1.0 to 3.5, and iii) the intrinsic viscosity [η] is 0.5 (dl/g) or greater.