| abstract |
POLYESTER COMPOSITION, BOTTLE FORM, AND PROCESS FOR MANUFACTURING A POLYESTER POLYMER COMPOSITION A polyester composition containing: (a) aluminum atoms; and b) alkali metal atoms or alkaline earth metal atoms or alkaline compound residues such as lithium atoms; and c) particles comprising titanium, zirconium, vanadium, niobium, hathio, tantalum, chromium, tungsten, molybdenum, iron or nickel atoms or combinations thereof, wherein the particles enhance the rate of reheating of the polyester composition. Polyester compositions may also contain deactivators! phosphorus catalyst stabilizers. Polyester compositions and articles produced from the compositions, such as blow-stretch bottle and preform bottles, have an improved reheat rate while maintaining low turbidity, high L *, a b * below 3, and have low acetaldehyde levels. In the process for producing the polyester polymer, the polymer melt is polycondensed in the presence of a) and b), the particles c) being added in a melt phase process or added to the polymer in an injection molding machine or extruder. The polyester polymer composition can be produced at high IR from the melt phase, while avoiding solid state polymerization. |