Patent ID: 7291398
Filing Date: 2007-11-06
Classification: B32B,Y10T

Abstract:
1. A glass laminate useful for blocking the transmission of IR light, comprising a multiple layer interlayer comprising: (1) two thermoplastic polymer sheets; (2) a film positioned between the thermoplastic polymer sheets such that the film is in contact on each of its surfaces with the sheets, and (3) a glass layer, wherein (a) the film can either reflect or absorb IR light, (b) the thermoplastic polymer sheets comprise an unplasticized ethylene/α,β-unsaturated carboxylic acid copolymer ionomer prepared from ethylene and α,β-unsaturated carboxylic acids having from 3 to 8 carbon atoms wherein the acid groups of the copolymer have been at least partially neutralized, and (c) the multiple layer interlayer does not develop edge color when subjected to a bake test at 90° C. for five weeks.