Polyhydroxy polyether, process for its production and its use.

摘要

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.