A substantially linear polyhydroxy polyether, which (1) is composed substantially of aromatic units and aliphatic units, the proportion of the aromatic units being 50 to 98 mole % based on the total amount of the aromatic units and the aliphatic units, (2) has an intrinsic viscosity, measured at 25°C in o-chlorophenol, of from 0.3 to 2 dl/g, and (3) has a glass transition temperature of from 30 to 120°C. Two processes for preparing the polyhydroxy polyether are proposed. The polyhydroxy polyether is useful in applications which require gas-barrier property.
一种基本线性的聚羟基聚醚,其(1)主要由芳香族单元和
脂肪族单元组成,芳香族单元的比例为 50 至 98 摩尔%(基于芳香族单元和
脂肪族单元的总量),(2)在 25°C
邻氯苯酚中测量的固有粘度为 0.3 至 2 分升/克,(3)
玻璃化转变温度为 30 至 120°C。提出了制备聚羟基聚醚的两种工艺。这种聚羟基聚醚在需要气体阻隔性能的应用中非常有用。