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.

Date of Patent:
Jul. 12, 2022

Filed:

May. 09, 2018
Applicant:

Sekisui Chemical Co., Ltd., Osaka, JP;

Inventors:

Masataka Sugimoto, Osaka, JP;

Keigo Oowashi, Osaka, JP;

Kouji Ashiba, Osaka, JP;

Yuko Kawahara, Tsukuba, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/18 (2006.01); C08K 3/38 (2006.01); C01B 21/064 (2006.01);
U.S. Cl.
CPC ...
B32B 27/18 (2013.01); C01B 21/064 (2013.01); C08K 3/38 (2013.01); B32B 2307/304 (2013.01); C08K 2003/385 (2013.01); Y10T 428/25 (2015.01);
Abstract

Provided is an insulating sheet capable of effectively enhancing thermal conduction and adhesiveness and effectively suppressing variation in the adhesiveness. The insulating sheet according to the present invention contains a thermosetting component and boron nitride, the insulating sheet has a first surface on one side in a thickness direction and a second surface on the other side in the thickness direction, and a first average aspect ratio of the boron nitride in a region having a thickness of 10% of a thickness of the sheet, from the first surface toward the second surface is smaller than a second average aspect ratio of the boron nitride in a region having a thickness of 90% of a thickness of the sheet, from the second surface toward the first surface.


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