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:
Jan. 25, 2011
Filed:
Jul. 25, 2007
Tetsuhiro Matsumoto, Iwakuni, JP;
Tetsunori Shinozaki, Otake, JP;
Yasushi Nakayama, Ichihara, JP;
Kunihiko Mizumoto, Chiba, JP;
Satoshi Akiyama, Ichihara, JP;
Toshiyuki Tsutsui, Otake, JP;
Tetsuhiro Matsumoto, Iwakuni, JP;
Tetsunori Shinozaki, Otake, JP;
Yasushi Nakayama, Ichihara, JP;
Kunihiko Mizumoto, Chiba, JP;
Satoshi Akiyama, Ichihara, JP;
Toshiyuki Tsutsui, Otake, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Abstract
Ethylene polymer particles having an intrinsic viscosity [η] of 5 dl/g to 30 dl/g, a degree of crystallinity of as high as 80% or more, and a specific shape on the surface of the particles. The ethylene polymer particles can be obtained by carrying out polymerization of olefins including ethylene using an olefin polymerization catalyst containing a solid titanium catalyst component including magnesium, halogen and titanium under specific conditions. The ethylene polymer particles obtained by a solid phase method, such as solid phase drawing molding, are capable of providing a molded article with high strength.