Patent ID: 8791189

Claim:
A thermoplastic composition comprising, based on the total weight of the composition: from 51 to 90 wt % of a polyester having a weight average molecular weight from 20,000 to 80,000 daltons, a carboxylic acid end group content from 5 to 50 meq/kg, and a melting point temperature from 200 to 285° C., wherein the polyester is selected from the group consisting of poly(ethylene terephthalate)s, poly(1,4-butylene terephthalate)s, poly(1,3-propylene terephthalate)s, poly(cyclohexanedimethanol terephthalate)s, poly(cyclohexanedimethylene terephthalate)-co-poly(ethylene terephthalate)s, and a combination thereof; from 10 to 49 wt % of an acrylonitrile-butadiene-styrene impact modifier composition, having an average particle size of 50 to 800 micrometers, a gel content of at least 50 wt %, a polybutadiene content of at least 50 wt % of the impact modifier composition, and a soluble styrene-acrylonitrile copolymer content ranging from 0 to 10 wt % of the impact modifier composition; from 0 to 20 wt % of a multifunctional epoxy compound; from 0 to 40 wt % of a filler; from 0 to 2 wt % of a fibrillated fluoropolymer; and 1 to 5 wt % of a thioether ester having a molecular weight of greater than 500 Daltons; wherein an article that is blow molded from the thermoplastic composition has a multi-axial impact total energy ranging from 30 to 100 Joules at −30° C., measured in accordance with ASTM D3763, and a ductility of more than 50% at −40° C.; has a permeability of more than 0 and less than or equal to 1.5 g/m 2 -day to ASTM D 471-98 Fuel C, measured after exposure to ASTM D 471-98 Fuel C vapor for 20 weeks at 40° C., using a disc having a diameter of 22 mm and a thickness of 2 mm; has an MVR of 1 to 20 cc/10 min, measured in accordance with ASTM D1238 at 265° C.; has a flexural modulus of greater than 1300 MPa, measured in accordance with ASTM D790; and retains at least 75% of its initial tensile elongation at break, as measured by ASTM D638, after exposure to Fuel E85 for 28 days at 70° C.