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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 9284427 B1

PDFFull Text
Date of Patent:
Mar. 15, 2016

Filed:

Feb. 22, 2013

Polypropylene-based resin composition and foam sheet

Applicant:

Japan Polypropylene Corporation, Tokyo, JP;

Inventors:

Sachio Hotta, Mie, JP;

Kazuo Asuka, Mie, JP;

Shinichi Kitade, Mie, JP;

Kuninori Takahashi, Mie, JP;

Iku Kouzai, Mie, JP;

Takao Tayano, Mie, JP;

Assignee:

Japan Polypropylene Corporation, Tokyo, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Jeffrey Mullis

Int. Cl.
CPC ...
C08J 9/00 (2006.01); B29C 47/00 (2006.01); B29C 47/06 (2006.01); B29C 51/02 (2006.01); B32B 27/06 (2006.01); B32B 27/32 (2006.01); B32B 5/18 (2006.01); C08L 23/12 (2006.01); C08J 9/04 (2006.01); C08F 297/08 (2006.01); C08F 10/06 (2006.01); C08F 4/659 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01); B29K 105/00 (2006.01); B29K 509/00 (2006.01);
U.S. Cl.
CPC ...
C08J 9/0061 (2013.01); B29C 47/004 (2013.01); B29C 47/06 (2013.01); B29C 47/065 (2013.01); B29C 51/02 (2013.01); B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/32 (2013.01); C08F 10/06 (2013.01); C08F 297/08 (2013.01); C08J 9/04 (2013.01); C08L 23/12 (2013.01); B29K 2023/08 (2013.01); B29K 2023/12 (2013.01); B29K 2023/14 (2013.01); B29K 2105/046 (2013.01); B29K 2105/256 (2013.01); B29K 2509/00 (2013.01); B32B 2305/022 (2013.01); B32B 2307/304 (2013.01); B32B 2307/306 (2013.01); B32B 2307/558 (2013.01); B32B 2323/10 (2013.01); B32B 2439/00 (2013.01); B32B 2605/00 (2013.01); C08F 4/65912 (2013.01); C08J 2201/03 (2013.01); C08J 2323/12 (2013.01); C08J 2323/14 (2013.01); C08J 2423/14 (2013.01); C08L 2203/14 (2013.01); C08L 2203/30 (2013.01); C08L 2205/03 (2013.01); Y10T 428/249992 (2015.04);
Abstract

Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.

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