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

Patent metadata

Field	Value
Publication number	US-2023144516-A1
Application number	US-202117917649-A
Country	US
Kind code	A1
Filing date	Feb 10, 2021
Priority date	Apr 24, 2020
Publication date	May 11, 2023
Grant date	—

Abstract

An anti-fouling silicone composite sheet includes a substrate layer, and a silicone adhesive layer stacked on one surface of the substrate layer, and has a hardness of 5 or less measured with an Asker C hardness tester and an adhesive force of 5 N/25 mm or more with respect to a mortar test piece, in which a surface of the substrate layer which is located on a side opposite to the surface where the silicone adhesive layer is stacked is a surface anti-fouling-treated with a silicone hard coating agent containing a fluorine-containing silicone compound. An anti-fouling silicone composite sheet is capable of exhibiting anti-fouling performance and washability stably for a long period, easily attachable to an adherend, and followable even to cracking and shifting on the application surface; and a method for preventing graffiti by using the anti-fouling silicone composite sheet.

First claim

1 .- 9 . (canceled)

10 . An anti-fouling silicone composite sheet comprising:
a substrate layer; and a silicone adhesive layer stacked on one surface of the substrate layer, and having a hardness of 5 or less measured with an Asker C hardness tester and an adhesive force of 5 N/25 mm or more with respect to a mortar test piece, wherein a surface of the substrate layer which is located on a side opposite to the surface where the silicone adhesive layer is stacked is a surface anti-fouling-treated with a silicone hard coating agent containing a fluorine-containing silicone compound.

11 . The anti-fouling silicone composite sheet according to claim 10 , wherein the anti-fouling treatment is water repellent treatment, oil repellent treatment, or both the treatments.

12 . The anti-fouling silicone composite sheet according to claim 10 , wherein the substrate layer is an anti-UV-treated layer.

13 . The anti-fouling silicone composite sheet according to claim 11 , wherein the substrate layer is an anti-UV-treated layer.

14 . The anti-fouling silicone composite sheet according to claim 10 , wherein the substrate layer is a substrate layer anti-UV-treated with a silicone hard coating agent containing an anti-UV compound.

15 . The anti-fouling silicone composite sheet according to claim 11 , wherein the substrate layer is a substrate layer anti-UV-treated with a silicone hard coating agent containing an anti-UV compound.

16 . The anti-fouling silicone composite sheet according to claim 10 , wherein the substrate layer comprises a PET film.

17 . The anti-fouling silicone composite sheet according to claim 11 , wherein the substrate layer comprises a PET film.

18 . The anti-fouling silicone composite sheet according to claim 10 , wherein the substrate layer or the silicone adhesive layer has an anti-light-reflective effect.

19 . The anti-fouling silicone composite sheet according to claim 11 , wherein the substrate layer or the silicone adhesive layer has an anti-light-reflective effect.

20 . The anti-fouling silicone composite sheet according to claim 10 , wherein
the substrate layer has a thickness of 0.05 to 0.3 mm, the adhesive layer has a thickness of 0.5 to 3 mm, and the anti-fouling silicone composite sheet has a total thickness of 0.55 to 3.3 mm.

21 . The anti-fouling silicone composite sheet according to claim 11 , wherein
the substrate layer has a thickness of 0.05 to 0.3 mm, the adhesive layer has a thickness of 0.5 to 3 mm, and the anti-fouling silicone composite sheet has a total thickness of 0.55 to 3.3 mm.

22 . The anti-fouling silicone composite sheet according to claim 10 , wherein the anti-fouling silicone composite sheet is for preventing graffiti.

23 . The anti-fouling silicone composite sheet according to claim 11 , wherein the anti-fouling silicone composite sheet is for preventing graffiti.

24 . A method for performing a prevention of graffiti, comprising:
attaching the silicone adhesive layer of the anti-fouling silicone composite sheet according to claim 10 to a certain adherend; and the exposing the anti-fouling treated surface of the substrate layer to prevent graffiti on the adherend.

25 . A method for performing a prevention of graffiti, comprising:
attaching the silicone adhesive layer of the anti-fouling silicone composite sheet according to claim 11 to a certain adherend; and the exposing the anti-fouling treated surface of the substrate layer to prevent graffiti on the adherend.

Assignees

• Shinetsu Chemical Co

Inventors

• Endo Akihiro
• Imaizumi Keiji
• Yoda Masahiro

Classifications

• C09D5/1675

  Polyorganosiloxane-containing compositions · CPC title

• C09D183/00

  Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers · CPC title

• C09D183/04

  Polysiloxanes · CPC title

• C09J183/04

  Polysiloxanes · CPC title

• C08G77/24

  halogen-containing groups · CPC title