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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.:

US 10858507 B1

PDFFull Text
Date of Patent:
Dec. 08, 2020

Filed:

May. 09, 2017

Fiber-reinforced polypropylene-based resin composition and molded product thereof

Applicant:

Prime Polymer Co., Ltd., Tokyo, JP;

Inventor:

Yuichi Matsuda, Sodegaura, JP;

Assignee:

PRIME POLYMER CO., LTD., Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

John E Uselding

Int. Cl.
CPC ...
C08L 23/14 (2006.01); C08K 7/14 (2006.01); C08J 5/04 (2006.01); B29C 45/00 (2006.01); C08K 7/02 (2006.01); C08L 23/10 (2006.01); B29B 9/14 (2006.01); C08F 10/06 (2006.01); C08L 23/12 (2006.01); B29K 23/00 (2006.01); B29K 309/08 (2006.01);
U.S. Cl.
CPC ...
C08L 23/142 (2013.01); B29B 9/14 (2013.01); B29C 45/00 (2013.01); B29C 45/0001 (2013.01); B29C 45/0005 (2013.01); C08F 10/06 (2013.01); C08J 5/04 (2013.01); C08J 5/043 (2013.01); C08K 7/02 (2013.01); C08K 7/14 (2013.01); C08L 23/10 (2013.01); C08L 23/12 (2013.01); B29K 2023/12 (2013.01); B29K 2309/08 (2013.01); C08J 2323/12 (2013.01); C08J 2323/14 (2013.01); C08J 2423/12 (2013.01); C08J 2423/14 (2013.01); C08J 2423/30 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/035 (2013.01);
Abstract

Disclosed is a fiber-reinforced polypropylene-based resin composition including a propylene-based polymer (A) and reinforcing fibers (B), in which when a content of at least one olefin-derived structural unit selected from ethylene and an α-olefin having 4 to 8 carbon atoms in the propylene-based polymer (A) is designated as E (% by mass) (the sum of the propylene-based polymer (A) and the reinforcing fibers (B) is designated as 100% by mass), and a mesopentad fraction of the propylene-based polymer (A) as measured byC-NMR is designated as M (%), the following Expression (1) and Expression (2) are satisfied, the fiber-reinforced polypropylene-based resin composition being a resin composition with which a molded product having excellent thermal and mechanical characteristics and having an excellent external appearance of the molded product surface (particularly, external appearance of a grained surface) can be produced.85≤≤99  (1)74≤−12≤90  (2)

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