申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP1149874A1
公开(公告)日:2001-10-31
A practical polymerizable unsaturated polyester resin composition is provided, wherein a polyester skeleton derived from collected PET is introduced, for effective utilization of waste PET such as a PET bottle which has recently been considered a large obstacle to environmental protection. The polymerizable unsaturated polyester resin composition comprises a straight-chain polyester (A) having a (meth)acryloyl group at both ends of molecules and an ethylenically unsaturated monomer (B), said straight-chain polyester (A) having a (meth)acryloyl group at both ends of molecules being obtained by reacting: (a) a terephthalate oligomer having a hydroxyl group at both ends of molecules resulted from the alcoholysis reaction of collected waste polyethylene terephthalate by an aliphatic glycol having an ether bond, (b) a dibasic acid containing an aromatic dibasic acid as a principal component, and (c) a glycidyl (meth)acrylate.
本发明提供了一种实用的可聚合不饱和聚酯树脂组合物,其中引入了一种从收集的 PET 中提取的聚酯骨架,用于有效利用废 PET,如最近被认为是环境保护一大障碍的 PET 瓶。可聚合的不饱和聚酯树脂组合物包括分子两端具有 (甲基)丙烯酰基的直链聚酯 (A) 和乙烯基不饱和单体 (B),所述分子两端具有 (甲基)丙烯酰基的直链聚酯 (A) 是通过以下反应获得的:(a) 分子两端具有羟基的对苯二甲酸酯低聚物,该低聚物是由具有醚键的脂肪族乙二醇对收集的聚对苯二甲酸乙二醇酯进行醇解反应而得到的;(b) 以芳香族二元酸为主要成分的二元酸;以及 (c) (甲基)丙烯酸缩水甘油酯。