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

• US 20050089692A1
• Filed: 10/28/2003
• Published: 04/28/2005
• 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.
• Granted Patent: US 7,291,398 B2
• Time in Patent Office: Days
• US Class Current: 428/426
• 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 multiple layer interlayer useful for blocking the transmission of infra red (IR) light, comprising:

(1) at least two thermoplastic polymer sheets; and

(2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets are unplasticized.

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

(1) at least two thermoplastic polymer sheets; and

(2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets comprise unplasticized ethylene/unsaturated acid copolymer ionomer.

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

(1) at least two thermoplastic polymer sheets; and

(2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets do not include plasticizer.

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

(1) at least two thermoplastic polymer sheets; and

(2) a film, positioned between the thermoplastic polymer sheets such that the film is in direct contact on each of its surfaces with the sheets, wherein the film can either reflect or absorb IR light, and wherein the thermoplastic polymer sheets comprise an unplasticized copolymer of ethylene and an unsaturated acid wherein the acid groups of the copolymer have been at least partially neutralized to yield an ethylene/unsaturated copolymer ionomer.

5. A process for manufacturing a multiple layer laminate article of the present invention comprising the steps:

(1) priming at least one of the multiple layers of the laminate by application of a primer solution before assembling the layers;

(2) assembling at least three layers to be used as component layers for the laminate article, wherein at least one layer is an IR-blocking film, and wherein at least two of the layers are unplasticized thermoplastic polymer sheets;

(3) positioning the IR-blocking film such that it is contacted on its major surfaces by the unplasticized polymer sheets; and

, (4) laminating the at least three layers by heating the assembled layers at a temperature of at least 120°

C. and at a pressure greater than atmospheric pressure.

6. The process of claim 5 wherein the priming solution comprises a silane compound.

7. The process of claim 6 wherein the silane compound is an aminosilane such as gamma-aminopropyltriethoxysilane or N-(2-aminoethyl)-3-aminopropyltrimethoxysilane or similar hydrolyzable amino silanes.