Optical film exhibiting improved light to solar gain heat ratio

• US 10,081,570 B2
• Filed: 12/18/2014
• Issued: 09/25/2018
• Est. Priority Date: 12/30/2013
• Status: Active Grant

• Current Assignee: Saint-Gobain Performance Plastics Corporation (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Performance Plastics Corporation (Compagnie De Saint-Gobain)
• Inventors: Diguet, Antoine, Leyder, Charles, Lienhart, Fabien
• Primary Examiner(s): Katz, Vera
• Application Number:
  US14/575,049
• Publication Number:
  US 20150183301A1
• Time in Patent Office: 1,377 Days
• Field of Search: None
• CPC Class Codes: B32B 15/00 Layered products comprising a layer of metal
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3613 Coatings of type glass/inorganic compound/metal/inorganic compound/metal/other
• CPC Class Codes: C03C 17/3644 the metal being silver
• CPC Class Codes: C03C 17/366 Low-emissivity or solar control coatings
• CPC Class Codes: C08J 2301/12 Cellulose acetate
• CPC Class Codes: C08J 2327/12 containing fluorine atoms
• CPC Class Codes: C08J 2333/06 of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
• CPC Class Codes: C08J 2353/02 of vinyl aromatic monomers and conjugated dienes
• CPC Class Codes: C08J 2367/02 Polyesters derived from dicarboxylic acids and dihydroxy compounds; C08J2367/06 takes precedence
• CPC Class Codes: C08J 2369/00 Characterised by the use of polycarbonates; Derivatives of polycarbonates
• CPC Class Codes: C08J 2375/04 Polyurethanes
• CPC Class Codes: C08J 7/044 Forming conductive coatings; Forming coatings having anti-static properties
• CPC Class Codes: C08J 7/06 with compositions not containing macromolecular substances
• CPC Class Codes: G02B 5/282 reflecting for infrared and transparent for visible light, e.g. heat reflectors, laser protection
• CPC Class Codes: Y10T 428/12549 Adjacent to each other

Abstract

The present disclosure is directed to optically transparent and IR reflecting films having a metal oxide based composite layer which can synergistically improve the optical properties, solar properties, and production speed of the whole composite.

Claims

1. A composite film comprising a metal oxide based composite layer, a first silver based layer and a first metal based layer disposed between the metal oxide based composite layer and the first silver based layer, wherein the metal oxide based composite layer comprises a niobium oxide layer and a metal oxide layer, wherein the first metal based layer directly contacts the silver based layer and wherein the first metal based layer consists of gold and wherein the composite film has a visual light transmittance of at least 65%.

2. The composite film of claim 1, wherein the metal oxide based composite layer comprises one or more zinc oxide based layers, and wherein the one or more zinc oxide based layers comprise AZO.

3. The composite film of claim 1, wherein the composite film comprises one or more zinc oxide based layers disposed adjacent to the first metal based layer.

4. The composite film of claim 1, wherein the composite film comprises a substrate layer and a titanium oxide based layer disposed adjacent to the substrate layer.

5. The composite film of claim 1, wherein the composite film further comprises a second metal based layer, and wherein second metal based layer is in direct contact with the first silver based layer.

6. The composite film of claim 1, wherein the composite film further comprises a second silver based layer, a third metal based layer and a fourth metal based layer, and wherein the third metal based layer and the fourth metal based layer are in direct contact with the second silver based layer.

7. The composite film of claim 6, wherein the composite film further comprises one or more zinc oxide based layers, and wherein the one or more zinc oxide based layers comprise AZO.

8. The composite film of claim 6, wherein the composite film comprises a substrate layer and a titanium oxide based layer disposed adjacent to the substrate layer.

9. The composite film of claim 1, wherein the composite film comprises a zinc oxide based layer for every silver based layer.

10. The composite film of claim 1, wherein the composite film comprises a first zinc oxide based layer disposed adjacent to the first metal based layer.