| 摘要 |
A composition, comprising a blend of 10 to 45 weight percent of a polyester selected from the group consisting of poly(ethylene terephthalate), poly(butylene terephthalate), poly(l,4-cyclohexyldimethylene cyclohexyl dicarboxylate), or a combination comprising at least one of the foregoing; and 55 to 90 weight percent of a poly(ester-ether) copolymer, each based on the total weight of the polyester and the poly(ester-ether) copolymer; wherein the poly(ester-ether) copolymer comprises units derived from terephthalic or a chemical equivalent thereof, units derived from butane diol or a chemical equivalent thereof, and 25 to 65 weight percent of units derived from poly(oxytetramethylene) glycol or a chemical equivalent thereof, based on the weight of the copolymer; wherein the composition retains at least 50% of at least one of tensile strength, modulus, stress at maximum strain, or the elongation at break is larger than 150% after being exposed to a temperature of 14O0C for 70 hours, as measured by ASTM D-638. |
