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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 10130928 B1

PDFFull Text
Date of Patent:
Nov. 20, 2018

Filed:

Dec. 15, 2014

Process for producing heat-expandable microspheres and application thereof

Applicant:

Matsumoto Yushi-seiyaku Co., Ltd., Yao-shi, Osaka, JP;

Inventors:

Daisuke Nakatomi, Yao, JP;

Kazunari Ueda, Yao, JP;

Katsushi Miki, Yao, JP;

Assignee:

MATSUMOTO YUSHI-SEIYAKU CO., LTD., Osaka, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Mark Kopec

Int. Cl.
CPC ...
C08J 9/14 (2006.01); B32B 27/00 (2006.01); B01J 13/18 (2006.01); B32B 13/00 (2006.01); B01J 13/14 (2006.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/134 (2010.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 4/62 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 4/1393 (2010.01); H01M 4/587 (2010.01); H01M 4/02 (2006.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
B01J 13/18 (2013.01); B01J 13/14 (2013.01); B32B 13/00 (2013.01); H01M 4/0404 (2013.01); H01M 4/0409 (2013.01); H01M 4/0411 (2013.01); H01M 4/133 (2013.01); H01M 4/134 (2013.01); H01M 4/1393 (2013.01); H01M 4/38 (2013.01); H01M 4/386 (2013.01); H01M 4/387 (2013.01); H01M 4/583 (2013.01); H01M 4/587 (2013.01); H01M 4/622 (2013.01); H01M 4/661 (2013.01); H01M 4/663 (2013.01); H01M 10/0525 (2013.01); H01M 10/052 (2013.01); H01M 2004/027 (2013.01);
Abstract

A process for producing heat-expandable microspheres including a thermoplastic resin shell and a blowing agent encapsulated therein. The process includes the steps of dispersing a polymerizable component and the blowing agent in an aqueous dispersion medium having a pH of 7 or less and containing a fine-particle metal compound having a mean particle size ranging from 1.0 to 10 nm, and polymerizing the polymerizable component. The amount of the fine-particle metal compound ranges from 0.15 to 20 parts by weight to 100 parts by weight of the total amount of the polymerizable component and the blowing agent. Also disclosed are heat-expandable microspheres produced by dispersing a polymerizable component and a blowing agent in an aqueous dispersion medium containing colloidal silica and polymerizing the polymerizable component. Also disclosed is a composition containing the heat-expandable microspheres and a base component, a formed product, a slurry composition for use in forming a negative electrode of a lithium-ion secondary battery and a negative electrode.

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