| 摘要 |
PURPOSE:To obtain the resinous intermediate film excellent in sound insulating property and which obviates the need for addition of a plasticizer by using amorphous polyester resin having a specified glass transition point temp. and a melt starting temp. and consisting of multivalent carboxylic acid and aliphat. bivalent alcohol as a main starting material. CONSTITUTION:The main starting material of the intermediate film for a laminated glass is the amorphous polyester resin consisting of multivalent carboxylic acid and aliphat. bivalent alcohol. The amorphous polyester resin has -20 to +40 deg.C glass transition point temp. and <=100 deg.C melt starting temp.. Especially, 0.1-3mol.% of the total component monomer of the amorphous polyester resin is at least either arom. bivalent alcohol expressed by formula I or arom. bivalent carboxylic acid expressed by formula II. In the formula, (n) is 3 or 4, each of R<1> and R<2> is alkylene group independently, each of (l) and (m) is zero or an integer of >=1, (p) is 3 or 4. |
