Patent ID: 9745417
Date: 2017-08-29
CPC Classifications: C08G,C08J,C08K,C08L,C09K

Claim:
1. A polycarbonate composition comprising: a polycarbonate; and a copolycarbonate, wherein the copolycarbonate comprises: an aromatic polycarbonate-based first repeating unit; and aromatic polycarbonate-based second repeating units having siloxane bonds, wherein the second repeating units comprise a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3, wherein the copolycarbonate has an impact strength at room temperature of 840 to 1000 J/m as measured at 23° C. in accordance with ASTM D256 (⅛ inch, Notched Izod), and wherein the copolycarbonate satisfies Equation 1: in Chemical Formula 2, each of X each of R n is an integer of 10 to 50, in Chemical Formula 3, each of X each of Y each of R m is an integer of 55 to 80, in Equation 1, TS TS represents tensile stress measured in accordance with ASTM D638, after contacted with ethyl acetate for 168 hours in accordance with ASTM D543 (PRACTICE B).