申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
                            
                            
                                公开号:EP0031203A2
                            
                            
                                公开(公告)日:1981-07-01
                            
                            
UV stable linear polyesters, e.g. polyethylene terephthalate, contain in their chain copolymerised 2-hydroxy-di (hydroxyalkoxy)benzophenone. The polyesters are useful for making biaxially oriented films. The polyesters can be made by polycondensation in the presence of 2,4,4'-trihydroxybenzophenone.
                            紫外线稳定的线性聚酯(如聚
对苯二甲酸乙二醇酯)的链中含有共聚的 2-羟基-二(羟基烷氧基)
二苯甲酮。这种聚酯可用于制造双向拉伸薄膜。这种聚酯可在 
2,4,4'-三羟基二苯甲酮存在下通过缩聚反应制成。