Patent ID: 7901780

Claim:
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.