Polycarbonate resin and thermoplastic resin composition including polycarbonate resin
A polycarbonate resin includes a repeating unit in its main chain of the following Chemical Formula 1: wherein the substituents are as defined in the specification.
1. A polycarbonate resin comprising a repeating unit of the following Chemical Formula 1 in its main chain:
wherein, in Chemical Formula 1,
R 1 to R 8 are the same or different and are each independently substituted or unsubstituted C 1 -C 10 alkyl or substituted or unsubstituted C 6 -C 18 aryl, wherein the substituted C 1 -C 10 alkyl or substituted C 6 -C 18 aryl is substituted by C 1 -C 10 alkyl, C 6 -C 18 aryl, halogen, C 1 -C 10 alkoxy, or a combination thereof;
A and B are the same or different and are each independently C 1 -C 10 alkylene, C 6 -C 18 arylene, —O—, or —S—;
Z is substituted or unsubstituted C 1 -C 18 alkylene, substituted or unsubstituted C 6 -C 18 cycloalkylene, or substituted or unsubstituted C 6 -C 18 arylene;
X and Y are the same or different and are each independently hydrogen, halogen, C 1 -C 18 alkoxy, C 1 -C 10 alkyl, or C 6 -C 18 aryl; and
n and m are positive integers, wherein n+m is an integer from 8 to 100.
2. The polycarbonate resin of claim 1 , comprising the repeating unit of Chemical Formula 1 in an amount of about 1 to about 20% by weight based on the total weight of the polycarbonate resin.
3. The polycarbonate resin of claim 1 , comprising Si in an amount of about 0.3 to about 10% by weight based on the total weight of the polycarbonate resin.
4. The polycarbonate resin of claim 1 , comprising the repeating unit of Chemical Formula 1 in an amount of about 1 to about 20% by weight based on the total weight of the polycarbonate resin and further comprising Si in an amount of about 0.3 to about 10% by weight based on the total weight of the polycarbonate resin.
5. The polycarbonate resin of claim 1 , comprising the repeating unit of Chemical Formula 1 in an amount of about 2.8 to about 3.4% by weight based on the total weight of the polycarbonate resin.
6. The polycarbonate resin of claim 1 , comprising Si in an amount of about 4.7 to about 4.9% by weight based on the total weight of the polycarbonate resin.
7. The polycarbonate resin of claim 1 , comprising the repeating unit of Chemical Formula 1 in an amount of about 2.3 to about 2.5% by weight based on the total weight of the polycarbonate resin and further comprising Si in an amount of about 5.5 to about 7.0% by weight based on the total weight of the polycarbonate resin.
8. The polycarbonate resin of claim 1 , wherein Z is C 1 -C 12 alkylene optionally substituted with C 6 -C 18 arylene in the chain thereof.
9. The polycarbonate resin of claim 1 , wherein Z is linear C 1 -C 18 alkylene.
10. The polycarbonate resin of claim 1 , wherein m is an integer having a value of 1 to 60, and n is an integer having a value of 1 to 60.
11. A thermoplastic resin composition comprising a polycarbonate resin of claim 1 .
12. The thermoplastic resin composition of claim 11 , wherein Z is C 6 -C 12 cycloalkylene, and wherein a specimen formed thereof having a thickness of ¼″ has a notched IZOD impact strength of about 60 to about 90 kgf·cm/cm measured in accordance with ASTM D256 is from.
13. The thermoplastic resin composition of claim 11 , wherein Z is C 1 -C 10 alkylene, and wherein a specimen formed thereof having a thickness of 2.5 mm has a Haze (Hz) measured by a Haze meter of about 0.1 to about 10%, and a Total Transmitted Light (TT) is about 85 to about 99%.
14. The thermoplastic resin composition of claim 11 , wherein Z is C 6 -C 18 arylene, and wherein a dumbbell shaped test specimen exhibits a change in tensile strength before and after immersing into gasoline for seven days of about 0 to about 25% measured in accordance with ASTM No. 1.
15. A molded product prepared from the thermoplastic resin composition of claim 11 .
16. The polycarbonate resin composition of claim 11 , further including a polycarbonate resin that does not include Si.
17. The polycarbonate resin composition of claim 16 , comprising the polycarbonate resin of claim 1 that includes Si and the polycarbonate resin that does not include Si in a weight ratio of about 40:60 to about 60:40.