| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a interlayer film for laminated glass which is good in heat insulation and sound insulation characteristics. <P>SOLUTION: The interlayer film for the laminated glass is composed of a layer A and a layer B, the layer A consists of a polyvinyl acetal (PVAc) resin P and a plasticizer W, the layer B consists of the PVAc resin Q, the plasticizer X, and ITO particles. The ITO particles are that their mean particle diameter is≤80 nm, and the number of particles≥100 nm in diameter perμm<SP>2</SP>is≤1. The particles are contained in the PVAc resin of 100 pts.wt. by 0.01-3.0 pts.wt. The PVAc resin Q is composed of the PVAc resin R of 1,000-3,000 mean polymerization degree and a PVAc resin S of 3,000-5,000 mean polymerization degree which is≥1,500 in mean polymerization degree than that of PVAc resin R. The degree of acetalization is 60-85 mol%, the amount of the acetyl group is 8-30 mol%, and their total is≥75 mol%. The cloud point of the solution in which the 8 pts.wt. PVAc resin Q is dissolved into the 100 pts.wt. plasticizer X, is≤50°C. <P>COPYRIGHT: (C)2003,JPO</p> |
