POLYESTER COMPOSITION SUITABLE FOR USE IN THERMOFORMING TRAY USABLE IN DOUBLE OVEN

摘要

This application relates to a thermoplastic resin composition which is particularly suitable for use in thermoforming thin walled articles, such as dual-ovenable trays. Articles which are made utilizing this thermoplastic resin composition have improved low temperature impact strength. These thermoplastic resin compositions are comprised of (a) from about 92 to about 99 weight percent polyethylene terephthalate having an intrinsic viscosity of from at least about 0.7 dl/g; (b) from about 1 to about 8 weight percent of a polyethylene ionomer; and (c) optionally an effective amount of a heat stabilizer. The subject application also deals with thermoforming such thermoplastic resin compositions into thin walled articles having a crystallinity within the range of about 10% to about 40%.