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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 12686771 B1

PDFFull Text
Date of Patent:
Jul. 21, 2026

Filed:

Nov. 22, 2021

Anti-fouling silicone composite sheet and method for performing prevention of graffiti using same

Applicant:

Shin-etsu Chemical Co., Ltd., Tokyo, JP;

Inventors:

Keiji Imaizumi, Takasaki, JP;

Akihiro Endo, Annaka, JP;

Masaki Moteki, Takasaki, JP;

Assignee:

SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;

Attorney:

OLIFF PLC

Primary Examiner:

Zachary M Davis

Int. Cl.
CPC ...
C08L 83/04 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/16 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); C09J 7/29 (2018.01); C09J 7/38 (2018.01); C09J 183/04 (2006.01);
U.S. Cl.
CPC ...
C08L 83/04 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/16 (2013.01); B32B 27/322 (2013.01); B32B 27/36 (2013.01); C09J 7/29 (2018.01); C09J 7/38 (2018.01); C09J 183/04 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/536 (2013.01); B32B 2307/554 (2013.01); B32B 2307/7376 (2023.05); B32B 2307/748 (2013.01); B32B 2405/00 (2013.01);
Abstract

An anti-fouling silicone composite sheet including: a substrate layer containing a fluororesin; and a silicone adhesive layer stacked on one surface of the substrate layer, having a hardness of 5 or less as measured with an Asker C hardness tester, and having an adhesive force with respect to a mortar test piece of 5 N/25 mm or more, wherein the substrate layer has a surface on which the silicone adhesive layer is stacked and the other surface is an anti-fouling surface. By the above configuration, the present invention provides an anti-fouling silicone composite sheet capable of exhibiting anti-fouling performance, washability, easiness of washing, and wear resistance stably for a long period, easily attachable to an adherend, and conformable even to cracking and shifting on the application surface; and a method for performing a prevention of graffiti by using the anti-fouling silicone composite sheet.

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