Toughened poly(ethylene terephthalate) compositions
AssigneeE.I. du Pont de Nemours and Company
InventorsGregory Alms, Toshikazu Kobayashi
Life of this patent
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Abstract
Toughened poly(ethylene terephthalate) compositions which contain functionalized polymeric tougheners, and wherein the poly(ethylene terephthalate) contains little or no antimony, have superior heat stability and retain their toughness for longer periods at higher temperatures. The compositions are useful for molded and shaped parts, such as mechanical parts, automotive parts and electrical parts.
Claims19
A toughened poly(ethylene terephthalate) composition which comprises a functionalized polymeric toughener dispersed in a continuous matrix of said poly(ethylene terephthalate) wherein said improvement comprises said poly(ethylene terephthalate) contains less than 50 ppm of antimony.
The shaped part as recited in claim 9 which is an appearance part.
A process for melt forming into a shaped part a toughened poly(ethylene terephthalate) composition which comprises a functionalized polymeric toughener dispersed in a continuous matrix of said poly(ethylene terephthalate) wherein said improvement comprises said poly(ethylene terephthalate) contains less than 50 ppm of antimony.
Dependencies are inferred from the claim text.