Ionomer resins as interlayers for use with imbedded or attached IR reflective or absorptive films in laminated glazing applications

• US 7,291,398 B2
• Filed: 10/28/2003
• Issued: 11/06/2007
• Est. Priority Date: 10/28/2003
• Status: Active Grant

• Current Assignee: Dow Global Technologies LLC (Dow, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Anderson, Jerrel C.
• Primary Examiner(s): NAKARANI, DHIRAJLAL S
• Application Number:
  US10/695,721
• Publication Number:
  US 20050089692A1
• Time in Patent Office: 1,470 Days
• Field of Search: 428/437, 428/441, 428/442, 428/520, 428/522, 156/106, 156/332
• US Class Current: 428/442
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: B32B 17/10688 Adjustment of the adherence to the glass layers
• CPC Class Codes: B32B 17/10743 containing acrylate (co)polymers or salts thereof
• CPC Class Codes: B32B 17/10853 the membrane being bag-shaped
• CPC Class Codes: B32B 2307/42 Polarizing, birefringent, filtering
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 27/06 as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
• CPC Class Codes: Y10T 428/31645 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31928 Ester, halide or nitrile of addition polymer
• CPC Class Codes: Y10T 428/31935 Ester, halide or nitrile of addition polymer

Abstract

This invention is glass laminate article comprising a film which can block the transmission of infra red (IR) light. A laminate of the present invention comprises at least two sheets of a non-plasticized thermoplastic polymer which forms the outer layers of a three-layer IR-blocking laminate film.

Claims

1. A glass laminate useful for blocking the transmission of IR light, comprising a multiple layer interlayer comprising:

(1) two thermoplastic polymer sheets;

(2) a film positioned between the thermoplastic polymer sheets such that the film is in contact on each of its surfaces with the sheets, and (3) a glass layer, wherein (a) the film can either reflect or absorb IR light, (b) the thermoplastic polymer sheets comprise an unplasticized ethylene/α

,β

-unsaturated carboxylic acid copolymer ionomer prepared from ethylene and α

,β

-unsaturated carboxylic acids having from 3 to 8 carbon atoms wherein the acid groups of the copolymer have been at least partially neutralized, and (c) the multiple layer interlayer does not develop edge color when subjected to a bake test at 90°

C. for five weeks.

2. The glass laminate of claim 1 wherein at least one of the layers of laminate materials used in the IR-blocking laminate is primed using a priming agent prior to lamination.

3. The glass laminate of claim 1 wherein the film is primed using a priming agent prior to lamination.

4. The glass laminate of claim 3 wherein the priming agent is a silane compound or solutions thereof.

5. The glass laminate of claim 3 wherein the priming agent is a silane compound in a solution of a solvent selected from the group consisting of methanol, ethanol, n-propyl alcohol, i-propyl alcohol, water, and mixtures of any of these.

6. The glass laminate of claim 3 wherein the priming agent is an aminosilane compound or solutions thereof.

7. The glass laminate of claim 6 wherein the aminosilane compound is selected from the group consisting of gamma-aminopropyltriethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, or similar hydrolyzable amino silanes.

8. The glass laminate of claim 6 wherein the aminosilane compound is selected from the group consisting of gamma-aminopropyltriethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane.

9. The glass laminate of claim 6 wherein the 90°

peel strength of the laminate as measured by peeling one of the thermoplastic polymer sheets from the film is at least about 4.0 oz/inch.

10. The glass laminate of claim 6 consisting essentially of in sequence and wherein each layer is adhered to the adjacent layer or film:

a layer of glass, one of the two thermoplastic polymer sheets, the film, the second of the two thermoplastic polymer sheets, and a second layer of glass.

11. The glass laminate of claim 3 wherein the priming agent is an aminosilane compound in a solution of a solvent selected from the group consisting of methanol, ethanol, n-propyl alcohol, i-propyl alcohol, water, and mixtures of any of these.

12. The glass laminate of claim 11 wherein the aminosilane is selected from the group consisting of gamma-aminopropyltriethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane.

13. The glass laminate of claim 3 wherein 90°

peel strength of the laminate as measured by peeling one of the thermoplastic polymer sheets from the film is at least about 3.5 oz/inch.

14. The glass laminate of claim 3 wherein 90°

peel strength as measured by peeling one of the thermoplastic polymer sheets from the film of the laminate is at least about 4.0 oz/inch.

15. The glass laminate of claim 3 consisting essentially of in sequence and wherein each layer is adhered to the adjacent layer or film:

a layer of glass, one of the two thermoplastic polymer sheets, the film, the second of the two thermoplastic polymer sheets, and a second layer of glass.

16. The glass laminate of claim 3 wherein the film is a multi-layered IR-reflecting film.

17. The glass laminate of claim 1 wherein the 90°

peel strength of the laminate as measured by peeling one of the thermoplastic polymer sheets from the film is at least about 2.0 oz/inch.

18. The glass laminate of claim 1 consisting essentially of in sequence and wherein each layer is adhered to the adjacent layer or film:

a layer of glass, one of the two thermoplastic polymer sheets, the film, the second of the two thermoplastic polymer sheets, and a second layer of glass.

19. The glass laminate of claim 1 further comprising in sequence and wherein each layer is adhered to the adjacent layer or film:

one of the two thermoplastic polymer sheets, the film, the second of the two thermoplastic polymer sheets, at least one layer of transparent, plasticized interlayer material, and the glass layer.

20. The glass laminate of claim 1 comprising in sequence and wherein each layer is adhered to the adjacent layer or film:

the glass layer, one of the two thermoplastic polymer sheets, the film, the second of the two thermoplastic polymer sheets, a plasticized polyvinyl butyral layer, and a second layer of glass.

21. The glass laminate of claim 1 wherein the film contains metal flakes or coating.

22. The glass laminate of claim 1 comprising in sequence and wherein each layer is adhered to the adjacent layer or film:

a layer of glass, one of the two thermoplastic polymer sheets, the film, the second of the two thermoplastic polymer sheets, a plasticized polyvinyl butyral layer, and a layer of polycarbonate sheet.

23. The glass laminate of claim 1 wherein the film is a multi-layered IR-reflecting film.

24. A multiple layer interlayer article useful for blocking the transmission of infra red (IR) light comprising:

(1) two thermoplastic polymer sheets; and

(2) a film positioned between the thermoplastic polymer sheets such that the film is in contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, wherein the thermoplastic polymer sheets comprise an unplasticized ethylene/α

,β

-unsaturated carboxylic acid copolymer ionomer prepared from ethylene and α

,β

-unsaturated carboxylic acids having from 3 to 8 carbon atoms wherein the acid groups of the copolymer have been at least partially neutralized, and wherein the multiple layer interlayer does not develop edge color when subjected to a bake test at 90°

C. for five weeks.

25. A process for manufacturing a multiple layer interlayer article as claimed in claim 24 comprising:

a. providing the two thermoplastic polymer sheets;

b. providing the film;

c. forming a multiple layer interlayer comprising the film adhered to the two thermoplastic polymer sheets; and

d. forming the multiple layer interlayer article.

26. A process for manufacturing a multiple layer interlayer article as claimed in claim 24 comprising sequentially:

a. providing the two thermoplastic polymer sheets;

b. providing the film;

c. priming at least one of the multiple layers of the laminate by application of a primer solution;

d. assembling the two thermoplastic polymer sheets and the film to form an assembly by positioning the thermoplastic polymer sheets such that the film is in contact on each of its surfaces with the sheets,

e. laminating the assembly at a temperature of at least 120°

C. and at a pressure greater than atmospheric pressure.

27. A process for manufacturing a glass laminate useful for blocking the transmission of IR light comprising the steps:

a. providing two thermoplastic polymer sheets comprised of an unplasticized ethylene/α

,β

-unsaturated carboxylic acid copolymer ionomer prepared from ethylene and α

,β

-unsaturated carboxylic acids having from 3 to 8 carbon atoms wherein the acid groups of the copolymer have been at least partially neutralized;

b. providing a film that can either reflect or absorb IR light;

c. providing two layers of glass;

d. assembling the two thermoplastic polymer sheets and film to form a multiple layer assembly;

e. laminating the multiple layer assembly to form a multiple layer interlayer comprising the film adhered to layers formed from the two thermoplastic polymer sheets, wherein the multiple layer interlayer does not develop edge color when subjected to a bake test at 90°

C. for five weeks; and

f. forming a glass laminate with the two glass layers on the outside and the multiple layer interlayer on the inside, wherein at least one thermoplastic polymer sheet is adhered to at least one layer of the glass.

28. The process of claim 27 further comprising priming using a priming agent prior to the lamination at least one of two thermoplastic polymer sheets or the film.

29. The process of claim 27 further comprising priming the film using a silane priming agent prior to the assembling.

30. The process of claim 29 wherein the silane priming agent is an aminosilane compound or solutions thereof.

31. The process of claim 30 wherein the laminating comprises heating the multiple layer assembly at a temperature of at least 120°

C. and at a pressure greater than atmospheric pressure.