INTERLAYER POLYVINYL BUTYROL FILM FOR LAMINATED GLASS

摘要

An interlayer film for a laminated glass, which comprises polyvinyl butyral and a plastecizer ad has a T peel strength at 20.degree.C of not more than 0.5 kg/cw, said polyvinyl butyral satisfying the following expression V?-3X + 486 wherein X is the degree of butyralization in mole % and Y is the half-value width in cm-1 of hydroxyl absorption in the infrared absorption spectrum of the polyvinyl butyral in which the ordinate represents the transmittance and the abscissa represents the wave number.