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. 02, 2014
Filed:
Jan. 06, 2010
Applicants:
Satoshi Tamura, Ichihara, JP;
Keita Itakura, Ichihara, JP;
Ryoichi Tsunori, Ichihara, JP;
Satoshi Hashizume, Ichihara, JP;
Inventors:
Satoshi Tamura, Ichihara, JP;
Keita Itakura, Ichihara, JP;
Ryoichi Tsunori, Ichihara, JP;
Satoshi Hashizume, Ichihara, JP;
Assignees:
Mitsui Chemicals Inc., Tokyo, JP;
Prime Polymer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 2/16 (2006.01); C08K 3/00 (2006.01); C08F 4/76 (2006.01); C08F 110/06 (2006.01); B01D 63/00 (2006.01); H01G 9/00 (2006.01); C08L 23/12 (2006.01); H01G 9/02 (2006.01); C08F 4/659 (2006.01); C08F 4/6592 (2006.01); C08L 23/04 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01G 9/155 (2013.01); C08F 110/06 (2013.01); C08L 23/12 (2013.01); H01G 9/02 (2013.01); H01M 2/1653 (2013.01); C08F 4/65912 (2013.01); C08F 4/65916 (2013.01); C08F 4/65927 (2013.01); C08L 23/04 (2013.01); C08L 2314/06 (2013.01); H01M 10/0525 (2013.01); Y02E 60/13 (2013.01);
Abstract
[Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and low thermal shrinkage ratio. [Solution] A polypropylene resin composition for use in the formation of a microporous membrane according to the present invention comprises as an essential component a propylene homopolymer (A) that satisfies the following requirements (1) to (4) and (7):