Light transmissive molded article and interior part of automobile

A light transmissive molded article comprising:

• a base layer molded from a thermoplastic resin composition and a coating layer formed on at least one surface of the base layer,
• wherein the thermoplastic resin composition is formed by a polycarbonate resin and a polycarbonate-polysiloxane resin,
• wherein the thermoplastic resin composition contains 65 wt % to 85 wt % of the polycarbonate resin and 15 wt % to 35 wt % of the polycarbonate-polysiloxane resin,
• wherein the polycarbonate-polysiloxane resin consists of a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2 and a repeating unit represented by Chemical Formula 3,
• wherein:
• R1 and R2 are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a halogen group,
• X is an alkylene group having 1 to 10 carbon atoms unsubstituted or substituted with an alkyl group or a phenyl group having 1 to 10 carbon atoms, a cycloalkylene group having 3 to 15 carbon atoms unsubstituted or substituted with an alkyl group or a phenyl group having 1 to 10 carbon atoms, O, S, SO, SO2, or CO,
• a and b are each independently an integer selected from a range from 0 to 4,
• wherein:
• Z1 and Z2 are each independently an alkylene group having 1 to 10 carbon atoms,
• R3 to R6 are each independently hydrogen, oxiranyl, an alkyl group having 1 to 15 carbon atoms unsubstituted or substituted with an alkoxy group having 1 to 10 carbon atoms substituted with oxiranyl or an aryl group having 6 to 20 carbon atoms, a halogen group, an alkoxy group having 1 to 10 carbon atoms, an allyl group, a haloalkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
• n is an integer from 10 to 200;
• wherein:
• Z3 and Z4 are each independently an alkylene group having 1 to 10 carbon atoms,
• R7 to R10 are each independently hydrogen, oxiranyl, an alkyl group having 1 to 15 carbon atoms unsubstituted or substituted with an alkoxy group having 1 to 10 carbon atoms substituted with oxiranyl or an aryl group having 6 to 20 carbon atoms, a halogen group, an alkoxy group having 1 to 10 carbon atoms, an allyl group, a haloalkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
• R11 and R12 are each independently hydrogen, an alkyl group having 1 to 6 carbon atoms, a halogen group, a hydroxyl group, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 20 carbon atoms,
• m is an integer in a range from 10 to 200,
• c and d are each independently an integer selected from a range from 0 to 4, when the c or the d is an integer equal to or higher than 2, the R11 and the R12 are different from each other;
• wherein the polycarbonate-polysiloxane resin has a molar ratio of 1:0.004 to 0.006 of the repeating unit represented by Chemical Formula 3 to the repeating unit represented by Chemical Formula 1, and a molar ratio of 1:0.004 to 0.006 of the repeating unit represented by Chemical Formula 2 to the repeating unit represented by Chemical Formula 1,
• wherein the coating layer is formed by applying a coating liquid to the base layer, the coating liquid comprising:
• (i) a pigment in an amount of 0.1 wt % to 10 wt %, 0.5 wt % to 5 wt %, or 1 wt % to 3 wt %, (ii) a curing agent in an amount of 20 wt % to 50 wt %, 30 wt % to 45 wt %, or 35 wt % to 40 wt %, (iii) a solvent in an amount of 1 wt % to 30 wt %, 5 wt % to 20 wt %, or 10 wt % to 15 wt %, and (iv) a paint in an amount of 30 wt % to 70 wt %, 40 wt % to 60 wt %, or 45 wt % to 55 wt %,
• wherein a peak energy PEA of the light transmissive molded article is equal to or greater than 40 J when an impact energy of 140 J is applied with a rod having a diameter of 12.7 mm and a thickness of 3.0 mm by ASTM D3763,
• wherein, when being exposed at 90° C. for 500 hours, the light transmissive molded article has a color difference ΔE1 based on color coordinates (L*0, a*0, b*0) of a CIE LAB color space before the exposure and color coordinates (L*A, a*A, b*A) of the CIE LAB color space after the exposure, wherein the color difference ΔE1 satisfies the equation ΔE1≤2.0, and wherein light transmittance T0 of the light transmissive molded article before the exposure and light transmittance TA of the light transmissive molded article after the exposure satisfy the equation 0.95≤TA/T0≤1.05.