Patent ID: 9624370
Date: 2017-04-18
CPC Classifications: C08K,C08L

Claim:
1. A thermoplastic polymer blend composition, comprising: a) from about 65 to about 80 parts by weight of at least one bisphenol A polycarbonate polymer component; b) from about 15 to about 35 parts by weight of at least one recycled polymer, wherein the at least one recycled polymer comprises one or more of a recycled acrylonitrile-butadiene-styrene (ABS) polymer, a recycled polystyrene (PS) polymer, or a combination thereof, wherein the recycled polymer comprises at least one impurity selected from iron, aluminum, copper, magnesium, calcium and polyurethane particle in an amount in the range from at least about 10 ppm to about 10,000 ppm; and c) from greater than 0 to about 0.1 parts by weight of an acid melt flow stabilizer per 100 parts by weight of the thermoplastic blend composition; wherein the thermoplastic polymer blend composition exhibits a melt flow rate measured at 260° C./2.16 kgf measured according to ASTM D1238 that is lower than that of an identical reference polymer blend composition in the absence of the acid melt flow stabilizer.