Absorbing solar control interlayers

• US 10,807,346 B2
• Filed: 08/31/2017
• Issued: 10/20/2020
• Est. Priority Date: 04/29/2014
• Status: Active Grant

• Current Assignee: Pleotint LLC
• Original Assignee: Pleotint LLC
• Inventors: Anderson, Christopher D., Byker, Harlan J., DeJong, Samuel J., Liposcak, Curtis J.
• Primary Examiner(s): Feely, Michael J
• Application Number:
  US15/692,377
• Publication Number:
  US 20170361577A1
• Time in Patent Office: 1,146 Days
• Field of Search: 428426, 428436
• CPC Class Codes: B32B 17/10091 thermally hardened
• CPC Class Codes: B32B 17/10137 Chemical strengthening
• CPC Class Codes: B32B 17/10155 Edge treatment or chamfering
• CPC Class Codes: B32B 17/10477 thermochromic
• CPC Class Codes: B32B 17/10633 Infrared radiation absorbing or reflecting agents
• CPC Class Codes: B32B 17/10678 comprising UV absorbers or stabilizers, e.g. antioxidants
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 2264/10 Inorganic particles
• CPC Class Codes: B32B 2307/71 Resistive to light or to UV
• CPC Class Codes: B32B 2307/754 Self-cleaning
• CPC Class Codes: B32B 2605/006 Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/18 characterised by the use of special additives
• CPC Class Codes: B32B 27/22 using plasticisers
• CPC Class Codes: B32B 27/30 comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/36 comprising polyesters

Abstract

A laminate comprising a near infrared (NIR) absorbing interlayer is disclosed. The interlayer includes a NIR-absorbing substance dispersed or dissolved in a polymer matrix and may further include a thermochromic material or system. The interlayer is bonded between first and second sheets of plastic or glass. The first and second sheets may further be bent, strengthened sheets of glass.

Claims

1. A light transmitting laminate comprising:

a first sheet of glass or plastic;

a second sheet of glass or plastic; and

an interlayer bonding the first sheet and the second sheet to one another;

wherein the interlayer has a three-layer structure comprising;

a first polymer layer formed from a composition comprising a polymer and one or more NIR-absorbing materials, wherein the one or more NIR-absorbing materials are dispersed in the polymer and/or dissolved in the polymer;

a second polymer layer formed from a composition comprising a polymer and one or more of;

a NIR-absorbing material, a thermochromic material, a UV absorber, and a color suppressing agent, wherein the NIR-absorbing material is dispersed in the polymer and/or dissolved in the polymer; and

a separator or barrier polymer layer positioned between the first polymer layer and the second polymer layer.

2. The laminate of claim 1, wherein the composition forming the first polymer layer further comprises a thermochromic material.

3. The laminate of claim 1, wherein the color suppressing agent is a color neutralizing agent.

4. The laminate of claim 1, wherein the laminate further comprises a low-e coating on the outermost surface of the first sheet of glass or plastic and/or the outermost surface of the second sheet of glass or plastic.

5. The laminate of claim 1 wherein:

the polymer of the first polymer layer is selected from polyvinylbutyral, poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), silicone, ethylenevinylacetate, thermoplastic polyurethanes and ionomeric polymers;

and

the polymer of the second polymer layer is selected from polyvinylbutyral, poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), silicone, ethylenevinylacetate, thermoplastic polyurethanes and ionomeric polymers.

6. The laminate of claim 5 wherein:

the one or more NIR-absorbing materials of the first polymer layer is selected from tungsten oxide, doped tungsten oxides, tungsten bronzes, cesium tungsten bronze, cesium tungsten oxides and combinations thereof.

7. The laminate of claim 6 wherein the separator or barrier polymer layer is a multilayer alternating refractive index (MLARI) film.

8. The laminate of claim 5 wherein:

the one or more NIR-absorbing materials of the first polymer layer comprises a tetrahalometalate and/or the NIR-absorbing material of the second polymer layer comprises a tetrahalometalate.

9. The laminate of claim 1 wherein the separator or barrier polymer layer is a multilayer alternating refractive index (MLARI) film.

10. The laminate of claim 9 wherein:

the one or more NIR-absorbing materials of the first polymer layer comprises a tetrahalometalate and/or the NIR-absorbing material of the second polymer layer comprises a tetrahalometalate.

11. The laminate of claim 9 wherein the NIR-absorbing materials of the first polymer layer and/or the second polymer layer treated with a surfactant, dispersant or synergist.

12. The laminate of claim 1 wherein:

the one or more NIR-absorbing materials of the first polymer layer comprises a tetrahalometalate and/or the NIR-absorbing material of the second polymer layer comprises a tetrahalometalate.

13. The laminate of claim 1, wherein the separator or barrier polymer layer is a sheet or film containing a NIR absorbing material or a multilayer film that reflects NIR light.

14. The laminate of claim 13, wherein the separator or barrier polymer layer is a PET sheet or film containing a NIR absorbing material.

15. The laminate of claim 13, wherein the NIR absorbing material in the sheet or film is a tetrahalometalate and/or a material selected from tungsten oxide, doped tungsten oxides, tungsten bronzes, cesium tungsten oxide, cesium tungsten bronze and combinations thereof.

16. A light transmitting laminate comprising:

a first sheet of plastic or glass;

a second sheet of plastic or glass; and

an interlayer bonding the first sheet and the second sheet to one another;

wherein the interlayer is;

(A) a single layer structure comprising a first polymer layer formed from a composition comprising a polymer and NIR-absorbing materials, wherein the NIR-absorbing materials are dispersed in the polymer and/or dissolved in the polymer;

(B) a two layer structure comprising said first polymer layer and a second polymer layer which acts as a UV barrier and/or acts in concert with said first polymer layer to form an acoustic interlayer;

or

(C) a three layer structure comprising said first polymer layer positioned between a second polymer layer and a third polymer layer which act as UV barriers and/or act in concert with said first polymer layer to form an acoustic interlayer;

wherein the second polymer layer and the third polymer layer are the same or different;

wherein the NIR-absorbing materials of the first polymer layer comprise a tetrahalometalate and a material

selected from tungsten oxide, doped tungsten oxides, tungsten bronzes, cesium tungsten oxide, cesium tungsten bronze and combinations thereof.

17. The laminate of claim 16, wherein the composition forming the first polymer layer further comprises a thermochromic material.

18. The laminate of claim 16, wherein the laminate further comprises a low-e coating on the outermost surface of the first sheet of glass or plastic and/or the outermost surface of the second sheet of glass or plastic.

19. The laminate of claim 16 wherein the polymer of the first polymer layer is selected from polyvinylbutyral, poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), silicone, ethylenevinylacetate, thermoplastic polyurethanes, and ionomeric polymers.

20. The laminate of claim 19 wherein:

the composition forming the first polymer layer further comprises a thermochromic material.

21. The laminate of claim 16 wherein the material selected from tungsten oxide, doped tungsten oxides, tungsten bronzes, cesium tungsten oxide, cesium tungsten bronze and combinations thereof is treated with a surfactant, dispersant or synergist.

22. A light transmitting laminate comprising:

a sheet of plastic or glass;

a first polymer layer, which is a sheet or film containing a NIR absorbing material or a multilayer film that reflects NIR light; and

an interlayer bonding the sheet and the polymer layer to one another;

wherein the interlayer comprises a polymer layer formed from a composition comprising a polymer and a NIR-absorbing material, wherein the NIR-absorbing material is dispersed in the polymer and/or dissolved in the polymer, and wherein the NIR-absorbing material comprises a tetrahalometalate.

23. The laminate of claim 22 wherein the multilayer film is a multilayer alternating refractive index (MLARI) film.

24. The laminate of claim 23 wherein the polymer of the polymer layer of the interlayer is selected from polyvinylbutyral, poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), silicone, ethylenevinylacetate, thermoplastic polyurethanes, and ionomeric polymers.

25. The laminate of claim 22 wherein the polymer of the polymer layer of the interlayer is selected from polyvinylbutyral, poly(vinyl butyral-co-vinyl alcohol-co-vinyl acetate), silicone, ethylenevinylacetate, thermoplastic polyurethanes, and ionomeric polymers.

26. The laminate of claim 22 wherein the first polymer layer is an acrylic, polycarbonate, or polyethylene terephthalate sheet or film containing a NIR absorbing material.

27. The laminate of claim 26 wherein the NIR absorbing material in the acrylic, polycarbonate, or polyethylene terephthalate sheet or film is selected from tungsten oxide, doped tungsten oxides, tungsten bronzes, cesium tungsten oxide, and cesium tungsten bronze.