Light-weight, high stiffness glass laminate structure

Abstract

A laminate structure having a first chemically strengthened glass layer, a second chemically strengthened glass layer, and a polymer interlayer structure intermediate the first and second glass layers. The polymer interlayer structure can include a first polymeric layer adjacent to the first glass layer, a second polymeric layer adjacent to the second glass layer, and a polymeric rigid core intermediate the first and second polymeric layers.

1 - 14 . (canceled) 
     
     
         15 . A multilayer article comprising:
 a first glass layer, wherein the first glass layer is comprised of a thin, chemically strengthened glass having a surface compressive stress of between about 250 MPa and about 350 MPa and a depth of layer of compressive stress greater than 60 μm;   a first interlayer; and   a polymer layer; wherein the polymer layer comprises a polysiloxane, a polyester, a polycarbonate, a copolymer comprising one or more of the foregoing, or a blend comprising one or more of the foregoing;   wherein the first glass layer is 0.1 to 1.5 mm, the first interlayer is 0.2 to 1.4 mm, and the polymer layer is 2 to 15 mm.   
     
     
         16 . The multilayer article of  claim 15 , further comprising a second glass layer and a second interlayer; wherein the second glass layer is comprised of a thin, chemically strengthened glass having a surface compressive stress of between about 250 MPa and 350 MPa and a depth of layer (DOL) of compressive stress greater than about 60 μm; wherein the second glass layer is 0.1 to 1.5 mm and the second interlayer is 0.2 to 1.4 mm. 
     
     
         17 . The multilayer article of  claim 15 , wherein the first interlayer comprises a thermoplastic polyurethane. 
     
     
         18 . The multilayer article of  claim 15 , wherein the first interlayer comprises a poly(ethylene-co-vinyl acetate), wherein the poly(ethylene-co-vinyl acetate) comprises 0 to 0.01 wt % hindered amine stabilizer. 
     
     
         19 . The multilayer article of  claim 15 , wherein the poly(ethylene-co-vinyl acetate) comprises a vinyl acetate content of 20 to 80 wt % based on the total weight of the poly(ethylene-co-vinyl acetate). 
     
     
         20 . The multilayer article of  claim 15 , wherein the polymer layer comprises a polysiloxane copolymer comprising:
 a.) a polysiloxane unit of the formula:   
       
         
           
           
               
               
           
         
         
           or of the formula: 
         
       
       
         
           
           
               
               
           
         
       
       wherein E is 4 to 50; each R is the same or different and is a C 1-13  monovalent organic group, and each R 2  is independently a divalent C 1-30  alkylene or C 7-30  arylene-alkylene; and Ar is a C 6-30  arylene group; and
 b.) an arylate-containing unit consisting of 50 to 100 mole percent of arylate ester units, less than 50 mole percent aromatic carbonate units, less than 30 mole percent resorcinol carbonate units, and less than 35 mole percent bisphenol carbonate units,
 wherein the siloxane units of the polysiloxane unit are present in the polysiloxane copolymer composition in an amount of 0.2 to 10 wt % based on the weight of the polysiloxane copolymer composition. 
 
 
     
     
         21 . The multilayer article of  claim 15 , wherein the polymer layer comprises a polysiloxane-polycarbonate copolymer derived from at least one dihydroxy aromatic containing polycarbonate unit, and at least one polysiloxane bisphenol of formula (1), formula (2), or a combination thereof 
       
         
           
           
               
               
           
         
         wherein R is each independently a C 1-30  hydrocarbon group, R 2  is each independently a C 7-30  hydrocarbon group, Ar is a C 6-30  aromatic group and, E has an average value of 5 to 200; 
         a second polycarbonate comprising brominated carbonate units derived from 2,2′,6,6′-tetrabromo-4,4′-isopropylidenediphenol and carbonate units derived from at least one dihydroxy aromatic compound that is not 2,2′,6,6′-tetrabromo-4,4′-isopropylidenediphenol; and 
         optionally, a third polycarbonate different from the polysiloxane-polycarbonate copolymer and second polycarbonate; 
         wherein the wt % of the polysiloxane-polycarbonate copolymer, the second polycarbonate, and the optional third polycarbonate sum to 100 wt %; wherein the first polycarbonate is present in an amount effective to provide the siloxane units in an amount of at least 0.3 wt %, based on the sum of the wt % of the polysiloxane-polycarbonate copolymer, the second polycarbonate, and the optional third polycarbonate, and the second polycarbonate is present in an amount effective to provide the bromine of the second polycarbonate in an amount of at least 7.8 wt %, based on the sum of the wt % of the polysiloxane-polycarbonate copolymer, the second polycarbonate, and the optional third polycarbonate. 
       
     
     
         22 . The multilayer article of  claim 15 , wherein the polymer layer comprises a first polymer comprising a polyetherimide-polysiloxane copolymer comprising (a) a repeating polyetherimide unit, and (b) a polysiloxane block unit, the polysiloxane block unit having the formula: 
       
         
           
           
               
               
           
         
         wherein R is each independently a C 1-30  hydrocarbon group, and E has an average value of 5 to 200; 
         a second polymer different from the first polymer and comprising bromine; and 
         an optional one or more third polymers comprising a polycarbonate different from the first polymer and second polymer;
 wherein the wt % of the first polymer, second polymer, and optional one or more third polymers sum to 100 wt %; and where the siloxane units are present in the composition in an amount of at least 0.3 wt %, based on the sum of the wt % of the first, second, and optional one or more third polymers, and the bromine is present in the composition in an amount of at least 7.8 wt %, based on the sum of the wt % of the first, second, and optional one or more third polymers. 
 
       
     
     
         23 . The multilayer article of  claim 15 , wherein the polymer layer comprises one or both of an antidrip agent and a flame retardant. 
     
     
         24 . The multilayer article of  claim 15 , wherein the polymer layer comprises an organophosphorus compound in an amount effective to provide 0.1 to 1.0 wt % of phosphorus, based on the total weight of the composition one or more flame retardants 
     
     
         25 . The multi layer article of  claim 24 , wherein the organophosphorus compound is an aromatic organophosphorus compounds having at least one organic aromatic group and at least one phosphorus-containing group, or an organic compounds having at least one phosphorus-nitrogen bond. 
     
     
         26 . The multilayer article of  claim 25 , wherein the aromatic organophosphorus compound comprises a C3-30 aromatic group and a phosphate group, phosphite group, phosphonate group, phosphinate group, phosphine oxide group, phosphine group, phosphazene, or a combination comprising at least one of the foregoing phosphorus-containing groups. 
     
     
         27 . The multilayer article of  claim 26 , wherein the aromatic organophosphorus compound is of the formula: 
       
         
           
           
               
               
           
         
         wherein
 R16, R17, R18 and R19 are each independently C1-8 alkyl, C5-6 cycloalkyl, C6-20 aryl, or C7-12 arylalkylene, each optionally substituted by C1-12 alkyl, and 
 X is a mono- or poly-nuclear aromatic C6-30 moiety or a linear or branched C2-30 aliphatic radical, which can be OH-substituted and can contain up to 8 ether bonds, provided that at least one of R16, R17, R18, R19, and X is aromatic, 
 n is each independently 0 or 1, and 
 q is from 0.5 to 30. 
 
       
     
     
         28 . The multilayer article of  claim 27 , wherein each of R 16 , R 17 , R 18 , and R 19  is phenyl, X is of the formula 
       
         
           
           
               
               
           
         
         each n is 1, and p is 1-5. 
       
     
     
         29 . The multilayer article of  claim 25 , wherein the aromatic organophosphorus compound is bisphenol A bis(diphenyl phosphate), triphenyl phosphate, resorcinol bis(diphenyl phosphate), tricresyl phosphate, or a combination comprising at least one of the foregoing. 
     
     
         30 . The multilayer article of  claim 24 , wherein organophosphorus compound containing a nitrogen-phosphorus bond is a phosphazene, phosphorus ester amide, phosphoric acid amide, phosphonic acid amide, phosphinic acid amide, tris(aziridinyl) phosphine oxide, a combination comprising at least one of the foregoing. 
     
     
         31 . The multilayer article of  claim 24 , wherein the organophosphorus compound is effective to provide phosphorus in an amount of 0.3% to 0.8% of phosphorus, based on the weight of the composition. 
     
     
         32 . The multilayer article of  claim 15 , wherein the article has one or more decorative layers applied to the polymer or glass layers by methods including but not limited to screen printing, laser marking, rotor gravure printing, pad printing, digital ink jet printing, hydrographics, laser etching, laser printing, and transfer printing. 
     
     
         33 . The multilayer article of  claim 15 , wherein the article has one or more of an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2; a peak heat release rate of less than 65 kW/m2 as measured using the method of FAR F25.4, in accordance with Federal Aviation Regulation FAR 25.853 (d); an E662 smoke test Dmax value of less than 200 when measured at a thickness of 1.6 mm. 
     
     
         34 . The multilayer article of  claim 15 , wherein the article has one or more of an OSU integrated 2 minute heat release test value of less than 55 kW-min/m2; a peak heat release rate of less than 55 kW/m2 as measured using the method of FAR F25.4, in accordance with Federal Aviation Regulation FAR 25.853 (d); an E662 smoke test Dmax value of less than 200 when measured at a thickness of 1.6 mm. 
     
     
         35 . The multilayer article of  claim 15 , wherein the article has a heat release according to EN45545 and ISO 5660 of less than 90 kW; a fire propagation in accordance with the method shown in EN45545 and ISO 5658-2 of greater than 20 kW; an EN 45545 and ISO 5659 for a smoke density at 240 seconds, a smoke density of less than 300, and a VOF4 smoke density of less than 600, and toxicity CITG, of less than 0.9 for an HL2 rating and 1.2 for an HL1 rating. 
     
     
         36 . The multilayer article of  claim 15 , wherein the article can pass one or more of a SMP 800C and Boeing BSS 7239 test for toxicity; the ASTM E162 test for flame spread; the ASTM E662 test for smoke density; the FAR25.853 (d) Appendix F Part V for smoke generation; the CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Subpart B, Appendix A, Type I, Ballistic Threat using caliber 0.22 LR (long rifle), 40.0-grain, lead ammunition with a minimum impact velocity of 960 fps fired at the center of the test sample; and a CFR 49, Chapter II, Federal Railroad Administration, DOT, Part 223, Subpart B, Appendix A, Type I, Block Threat using concrete blocks with a minimum weight of 25 lbs suspended and then dropped 30 feet, 1 inch onto the center of the test sample. 
     
     
         37 . The multilayer article of  claim 15 , wherein the article passes a British test standards BS476 Part 7 test for flame spread; a British test standards BS476 Part 6 for fire propagation; a British test standards BS 6853:1999 Annex D8.4.for smoke generation; and a British test standards BS 6853:1999 Annex B.2 for toxicity. 
     
     
         38 . The multilayer article of  claim 15 , wherein polymer layer comprises a flame retardant. 
     
     
         39 . A double pane window comprising:
 a first pane comprising a first glass layer, wherein the first glass layer is comprised of a thin, chemically strengthened glass having a surface compressive stress of between about 250 MPa and about 350 MPa and a depth of layer (DOL) of compressive stress greater than 60 μm; and a first interlayer located in between the first glass layer and a first polymer layer; wherein the first polymer layer comprises a polysiloxane, a polyester, a polycarbonate, a copolymer comprising one or more of the foregoing, or a blend comprising one or more of the foregoing;   a second pane comprising a third glass layer, wherein the third glass layer is comprised of a thin, chemically strengthened glass having a surface compressive stress of between about 250 MPa and about 350 MPa and a depth of layer (DOL) of compressive stress greater than 60 μm; and a third interlayer located in between the third glass layer and a second polymer layer; wherein the second polymer layer comprises a polysiloxane, a polyester, a polycarbonate, a copolymer comprising one or more of the foregoing, or a blend comprising one or more of the foregoing;   a gap located in between the first pane and the second pane; and   a frame surrounding an edge of the first pane and the second pane.   
     
     
         40 . The window of  claim 39 , wherein the first pane further comprises a second interlayer located in between a second glass layer and the first polymer layer and/or the second pane further comprises a fourth interlayer located in between a fourth glass layer and the second polymer layer. 
     
     
         41 . A method of making a multilayer article comprising:
 adding an interlayer with a 0.2 to 1.4 mm interlayer thickness to a polymer layer with a 2 to 15 mm polymer thickness;   adding a glass layer with a 0.1 to 1.5 mm glass layer thickness to the interlayer for form a multilayer structure; and   laminating the multilayer structure to form the multilayer article;   wherein the glass layer is comprised of a thin, chemically strengthened glass having a surface compressive stress of between about 250 MPa and about 350 MPa and a depth of layer (DOL) of compressive stress greater than 60 μm; and wherein the polymer layer comprises a polysiloxane, a polyester, a polycarbonate, a copolymer comprising one or more of the foregoing, or a blend comprising one or more of the foregoing.