Polymer interlayers comprising blends of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester
First Claim
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1. A laminated glass interlayer, comprising:
- a polymer sheet comprising a blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester, wherein said polymer sheet comprises 5 to 95 weight percent of said poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyster and 95 to 5 weight percent of said plasticized poly(vinyl butyral);
and wherein said plasticized poly(vinyl butyral) has 5 to 60 parts of plasticizer per one hundred parts of poly(vinyl butyral) resin (phr);
wherein said polymer sheet has a pearlescent appearance; and
wherein said pearlescent appearance is caused solely by said blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester.
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Abstract
It has now been discovered, according to the present invention, that interlayers comprising a blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester can be used to form interlayers having a pearly white appearance. Such interlayers are useful in applications in which a colored multiple layer glass interlayer is desirable.
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Citations
15 Claims
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1. A laminated glass interlayer, comprising:
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a polymer sheet comprising a blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester, wherein said polymer sheet comprises 5 to 95 weight percent of said poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyster and 95 to 5 weight percent of said plasticized poly(vinyl butyral); and wherein said plasticized poly(vinyl butyral) has 5 to 60 parts of plasticizer per one hundred parts of poly(vinyl butyral) resin (phr); wherein said polymer sheet has a pearlescent appearance; and wherein said pearlescent appearance is caused solely by said blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A laminated glass panel comprising:
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a rigid glazing substrate; and
,a laminated glass interlayer in contact with said substrate, said interlayer comprising; a polymer sheet comprising a blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester;
wherein said polymer sheet comprises 5 to 95 weight percent of said poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester and 95 to 5 weight percent of said plasticized poly(vinyl butyral);wherein said plasticized poly(vinyl butyral) has 5 to 60 parts of plasticizer per one hundred parts of poly(vinyl butyral) resin (phr); and wherein said glass panel has a pearlescent appearance, and wherein said pearlescent appearance is caused solely by said blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method of making a polymer sheet, comprising:
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providing plasticized poly(vinyl butyral) pellets; providing poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester resin; melt mixing said pellets and said poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester resin to form a blended resin; and extruding said blended resin to form said polymer sheet;
wherein said polymer sheet comprises 5 to 95 weight percent of said poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester and 95 to 5 weight percent weight of said plasticized poly(vinyl butyral);wherein said plasticized poly(vinyl butyral) has 5 to 60 parts of plasticizer per one hundred parts of poly(vinyl butyral) resin (phr); wherein said polymer sheet has a pearlescent appearance; and wherein said pearlescent appearance is caused solely by said blend of elasticized polyvinyl butyral) and poly(cyclohexanedimethylene) terephthalate-co-ethylene terephthalate copolyester.
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15. A method of manufacturing a multiple layer glass panel comprising:
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forming a stack by disposing a polymer sheet as an interlayer between two panes of glass, said polymer sheet comprising a blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester;
wherein said polymer sheet comprises 5 to 95 weight percent of said poly poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester and 95 to 5 weight percent of said plasticized poly(vinyl butyral);wherein said plasticized poly(vinyl butyral) has 5 to 60 parts of plasticizer per one hundred parts of poly(vinyl butyral) resin (phr); laminating the stack to produce the multiple layer glass panel; wherein said glass panel has a pearlescent appearance; and wherein said pearlescent appearance is caused solely by said blend of plasticized poly(vinyl butyral) and poly(cyclohexanedimethylene terephthalate-co-ethylene terephthalate) copolyester.
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Specification