SUBSTRATE WHICH IS PROTECTED AGAINST ORGANIC POLLUTION

• US 20100062227A1
• Filed: 11/30/2005
• Published: 03/11/2010
• Est. Priority Date: 12/02/2004
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Garrec, Ronan, Messere, Rino
• Granted Patent: US 8,318,290 B2
• Time in Patent Office: Days
• US Class Current: 428/192
• CPC Class Codes: C03C 17/2456 Coating containing TiO2
• CPC Class Codes: C03C 17/32 with synthetic or natural resins C03C17/30 takes precedence
• CPC Class Codes: C03C 19/00 Surface treatment of glass, not in the form of fibres or filaments, by mechanical means sand-blasting, grinding, or polishing glass B24
• CPC Class Codes: C03C 2217/212 TiO2
• CPC Class Codes: C03C 2217/71 Photocatalytic coatings
• CPC Class Codes: E04B 1/68 of joints, e.g. expansion joints packing for joints in roads or airfields E01C11/02; expansion joints for bridges E01D19/06; sealing joints between foundation piles E02D5/14; joints in foundation structures E02D29/16; devices for sealing the spaces or joints between roof-covering elements E04D1/36; sealing joints between roof-covering elements E04D3/38; construction of joints for flooring or floor layers composed of a number of similar elements E04F15/02005; construction of joints for flooring or floor layers made of masses in situ E04F15/14
• CPC Class Codes: E06B 3/56 by means of putty, cement, or adhesives only E06B3/64 E06B3/5427 take precedence
• CPC Class Codes: Y10T 428/24488 Differential nonuniformity at margin
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24777 Edge feature
• CPC Class Codes: Y10T 428/24926 including ceramic, glass, porcelain or quartz layer
• CPC Class Codes: Y10T 428/31612 As silicone, silane or siloxane

Abstract

The invention relates to a substrate (1) which is equipped with a mastic (3) along at least part of the periphery thereof, said mastic comprising silicon-type components. The invention is characterised in that a barrier to the migration of the silicons (5, 7, 8) is disposed on the surface (2) of the substrate (1).

Claims

1. A substrate (1) having, on at least one part of its periphery, a mastic (3) comprising silicone-type components, characterized in that a barrier to the migration of the silicones (5, 7, 8) is placed on the surface (2) of said substrate (1).

2. The substrate (1) as claimed in claim 1, characterized in that it is based on glass or ceramic and has, on at least one part of one of its faces, at least one thin film (6).

3. The substrate (1) as claimed in the preceding claim, characterized in that said thin film (6) is a coating that imparts a pronounced hydrophilic character such as a coating comprising at least partially crystalline titanium oxide, especially in anatase form.

4. The substrate (1) as claimed in one of the preceding claims, characterized in that the barrier to the migration of the silicones (5) is based on a polymer, preferably an elastomeric mastic that does not comprise any silicone-based plasticizers.

5. The substrate (1) as claimed in the preceding claim, characterized in that the polymer acting as a barrier (5) is deposited in the form of a bead on the surface (2) of said substrate (1), in direct contact with the mastic (3) comprising silicone-type compounds.

6. The substrate (1) as claimed in claim 4, characterized in that the polymer acting as a barrier (5) is deposited in the form of a bead onto the surface (2) of said substrate (1), opposite to and at a distance of a few millimeters from said mastic (3).

7. The substrate (1) as claimed in one of the preceding claims, characterized in that the elastomeric mastic (5) acting as a barrier to the migration of the silicones is based on MS polymer (silyl-terminated polyether).

8. The substrate (1) as claimed in one of claims 1 to 3, characterized in that the barrier to the migration of the silicones (8) is formed from a notch or a groove located on the surface (2) of said substrate (1) and opposite to the mastic that is a source of silicones (3).

9. The substrate (1) as claimed in claim 2, characterized in that the barrier to the migration of the silicones (8) is formed from a peripheral margination (7) of the thin film (6), said margination being such that there is a marginated zone (7) that is not covered by the mastic (3).