POLYESTER/POLYCARBONATE BLEND HAVING EXCELLENT THERMAL STABILITY AND COLOR STABILITY
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United States of America Patent
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Issued Date -
Aug 22, 2013
app pub date -
Oct 28, 2011
filing date -
Oct 28, 2010
priority date (Note) -
Abandoned
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Abstract
A polyester/polycarbonate blend having superior thermal stability and superior color stability is disclosed. The polyester/polycarbonate blend comprises: (a) P(ET-CT) (poly(ethylene terephthalate-co-1,4-cyclohexylene dimethylene terephthalate) which is copolymerized with 1,4-cyclohexanedimethanol (CHDM) of 40 to 90 mol % with respect to total diol components; (b) polyethylene terephthalate (PET); (c) polycarbonate (PC); and (d) germanium of 1 to 100 ppm (weight ratio) with respect to total polyester/polycarbonate blend, wherein with respect to total polyester/polycarbonate blend, the amount of the P(ET-CT) and PET is 50 to 90 weight %, the amount of the PET is 1 to 6 times in weight ratio with respect to the P(ET-CT), and the amount of the PC is 10 to 50 weight %.
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