Pvb film for composite safety glass and composite safety glass

摘要: Composite glass with films based on partially acetalated polyvinyl alcohol containing a softening agent, especially PVB based, as an intermediate layer magnesium salts or calcium of organic acids adhesion-reducing additive (anti-adhesive agent) exhibit large amounts fluctions regard to adhesion when the composite is subjected thermal stress. According invention, phosphorous compounds are used, selected from group consisting organophosphites i.e. esters phosphorinic acid radicals, organophosphates, orthonophosphoric acid, which during further processing compensates for fluctations in agent. The invention used production manufacture safety glass, building and automotive industry.