Improved halogenated polyester resin and process for the preparation thereof.

摘要

A halogenated polyester composition having improved impact resistance, rigidity and flame retardancy is produced by melt-kneading (A) 99 to 40 weight parts of a halogen-containing aromatic polyester and (B) 1 to 60 weight parts of (B-1) a copolymer of an alpha-olefin and glycidyl ester of an unsaturated acid or (B-2) a graft copolymer of (B-1) and a polymer of units of the formula (1): <CHEM> solidifying the molten mixture by cooling and for at least one hour in an inert gas atmosphere or under a reduced pressure of less than 1.33 kPa (10 torr) and at a temperature greater than 120 DEG C but not greater than the melting point of the mixture, thereby to effect the solid phase reaction.