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:
Dec. 03, 2013
Filed:
Jan. 13, 2010
Toru Yoshida, Osaka, JP;
Hiroshi Tsuneishi, Osaka, JP;
Toru Yoshida, Osaka, JP;
Hiroshi Tsuneishi, Osaka, JP;
Kaneka Corporation, Osaka, JP;
Abstract
Provided are polypropylene resin pre-foamed particles including, as base resin, polypropylene resin that satisfies the following requirements (a) through (c): (a) in cross fractionation chromatography, an amount of components eluted at a temperature of not more than 40° C. is not more than 2.0% by weight; (b) a melting point is not less than 100° C. but not more than 160° C.; and (c) propylene monomer units are present in an amount of not less than 90 mol % but not more than 100 mol %, and olefin units each having a carbon number of 2 or 4 or more are present in an amount of not less than 0 mol % but not more than 10 mol %. The polypropylene resin pre-foamed particles can be molded by in-mold foaming molding at a not high molding heating steam pressure, and a polypropylene resin in-mold foaming molded product excellent in dimensional stability at high temperatures can be prepared from the polypropylene resin pre-foamed particles.