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:
Jan. 24, 2012
Filed:
Mar. 30, 2007
Kentarou Kanae, Tokyo, JP;
Norihiro Yamamoto, Tokyo, JP;
Takio Itou, Ibaraki, JP;
Yasuyuki Tokunaga, Ibaraki, JP;
Makoto Saitou, Ibaraki, JP;
Kentarou Kanae, Tokyo, JP;
Norihiro Yamamoto, Tokyo, JP;
Takio Itou, Ibaraki, JP;
Yasuyuki Tokunaga, Ibaraki, JP;
Makoto Saitou, Ibaraki, JP;
JSR Corporation, Tokyo, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
An object of the invention is to provide a polyolefin resin foam which is excellent in flexibility, cushioning property and processability, especially excellent in cutting processability. The present invention relates to a polyolefin resin foam obtained by foaming a polyolefin resin composition using carbon dioxide in a supercritical state, wherein the polyolefin resin composition contains at least: (1) a thermoplastic elastomer composition obtained by subjecting to a dynamically heat treatment a mixture of (A) a rubber, and (B) (B-1) an α-olefin crystalline thermoplastic resin and/or (B-2) an α-olefin amorphous thermoplastic resin, each having a melt tension of less than 3.0 cN at a temperature of 210° C. and at a take-up speed of 2.0 m/min, in the presence of (C) a crosslinking agent; (2) a polyolefin resin; and (3) a nucleant agent having an average particle diameter of from 0.1 μm to less than 2.0 μm. The polyolefin resin foam has a density, for example, of 0.2 g/cmor less.