Patent ID: 8288007
Filing Date: 2012-10-16
Classification: B32B,Y10T

Abstract:
1. In a security glass laminate having at least one layer comprising front and rear tempered or chemically strengthened glass sheets, the improvement which comprises an inter layer of a sodium and lithium partially neutralized ionomer composition free of crystallinity having a melt index of 0.2 to 4 and the adhesion of the laminate to the glass as measured by the Ball Drop Test is at least 8, said ionomer composition consisting of copolymers of ethylene and at least 17% by weight of at least one acrylic acid and methacrylic acid which has been neutralized with a combination of at least 10 mole percent of said lithium salt having less than 1% lithium carbonate combined with sodium cations to neutralize from 15% to 40% of the free carboxyl groups available.