METHOD FOR REDUCING THE TERMINAL CARBOXYL GROUP CONTENT OF A SATURATED POLYESTER, A SATURATED POLYESTER HAVING A REDUCED TERMINAL CARBOXYL GROUP CONTENT, AND A MOLDED ARTICLE COMPOSED OF SUCH A SATURATED POLYESTER

摘要

Saturated polyesters having a reduced terminal carboxyl group content are produced by reacting a carboxyl-terminated, substantially linear, fiber-forming saturated polyester with a monocyclic imino ether compound of the formula

The monocyclic imino ether compound may be added in a melt-molding machine at a temperature above the temperature at which the saturated polyester melts, or a molded article composed of a carboxyl-terminated, substantially linear fiber-forming saturated polyester may be treated with the monocyclic imino ether compound.