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:
Apr. 02, 2019
Filed:
Mar. 19, 2018
Asahi Kasei Kabushiki Kaisha, Chiyoda-ku, Tokyo, JP;
Akitomo Kikuchi, Tokyo, JP;
ASAHI KASEI KABUSHIKI KAISHA, Chiyoda-ku, Tokyo, JP;
Abstract
Provided are a polyethylene polymer powder and method of producing the same that can improve molding efficiency while maintaining high levels of molded product strength and wear resistance. The polyethylene polymer powder comprises an ethylene homopolymer or copolymer and has an intrinsic viscosity IV of at least 12 dL/g and not more than 35 dL/g, a melting peak full width at half maximum of at least 2° C. and not more than 7° C., a span (laser particle size distribution measurement) of at least 0.9 and not more than 2, and an α-olefin content of 0 mol % to not more than 1.50 mol %. The method of producing this polyethylene polymer powder includes polymerizing ethylene or ethylene and an α-olefin by slurry polymerization using a loop reactor. In the polymerizing, supply of a solvent and ethylene or supply of a solvent, ethylene, and an α-olefin is performed by a plurality of supply lines.