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. 17, 2024
Filed:
Dec. 23, 2020
Applicant:
Kaneka Corporation, Osaka, JP;
Inventors:
Ayaka Fujishita, Osaka, JP;
Takayuki Goda, Osaka, JP;
Assignee:
KANEKA CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 255/02 (2006.01); C08J 3/24 (2006.01); C08J 9/14 (2006.01);
U.S. Cl.
CPC ...
C08F 255/02 (2013.01); C08J 3/24 (2013.01); C08J 9/142 (2013.01); C08J 2203/12 (2013.01); C08J 2323/26 (2013.01);
Abstract
A novel modified polypropylene resin is provided which makes it possible to provide, by an extrusion expansion method, expanded polypropylene-based resin particles having an expansion ratio which falls within a wide range and having a low open cell ratio. The novel modified polypropylene resin is obtained by a method of producing the modified polypropylene resin where the method includes a melting and kneading step of melting and kneading a particular random polypropylene resin, a conjugated diene compound, and a particular radical polymerization initiator to obtain the modified polypropylene resin.