POLYMERIC INTERLAYER SHEETS AND LIGHT WEIGHT LAMINATES PRODUCED THEREFROM

摘要

Provided herein are interlayer sheets formed of an acid copolymer composition, which comprises an acid copolymer resin or an ionomer that is the neutralized product of the acid copolymer resin. The acid copolymer resin comprises copolymerized units of an a-olefin having 2 to 10 carbon atoms; about 10 to about 25 wt% of copolymerized units of a first α,β-ethylenical!y unsaturated carboxylic acid having 3 to 10 carbon atoms; and about 15 to about 30 wt% of copolymerized units of a derivative of a second α,β- ethylenically unsaturated carboxylic acid having 3 to 10 carbon atoms. In addition, the acid copolymer resin has a melt flow rate of about 1 to about 400 g/10 min. Light weight safety laminates comprising these interlayer sheets are characterized by good strength and superior acoustic damping, due to the properties of the acid copolymer composition.