Polycarbonate resin composition and molded product using the same

1. A polycarbonate resin composition comprising:

(A) about 5 wt % to about 89 wt % of a polycarbonate resin;

(B) about 10 wt % to about 94 wt % of a polycarbonate-polysiloxane copolymer; and

(C) about 1 wt % to about 70 wt % of a modified acrylic-based copolymer, wherein the modified acrylic-based copolymer (C) is selected from the group consisting of copolymers formed by the polymerization of (c1) an aromatic acrylic-based compound, alicyclic acrylic-based compound, or a combination thereof; and (c2) a compound copolymerized therewith consisting of an alkyl methacrylate, an alkyl acrylate, an unsaturated carboxylic acid, maleic anhydride, an hydroxyl group-containing acrylate, acrylamide, methacrylamide, a nitrile, an epoxy group containing compound, styrene, α-methylstyrene, or a combination thereof.

2. The polycarbonate resin composition of claim 1 , wherein the polycarbonate resin has a melt flow index (MFI) of about 3 to about 120 g/10 min.

3. The polycarbonate resin composition of claim 1 , wherein the polycarbonate-polysiloxane copolymer comprises about 1 wt % to about 99 wt % of a polycarbonate block and about 1 wt % to about 99 wt % of a polysiloxane block.

4. The polycarbonate resin composition of claim 3 , wherein the polycarbonate-polysiloxane copolymer comprises about 40 wt % to about 80 wt % of said polycarbonate block and about 20 wt % to about 60 wt % of said polysiloxane block.

5. The polycarbonate resin composition of claim 3 , wherein the polysiloxane block includes a structural unit represented by the following Chemical Formula 2:

wherein:

R 3 and R 4 are the same or different and independently include hydrogen, substituted or unsubstituted C1 to C20 alkyl, substituted or unsubstituted C2 to C20 alkenyl, substituted or unsubstituted C2 to C20 alkynyl, substituted or unsubstituted C1 to C20 alkoxy, substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C3 to C30 cycloalkenyl, substituted or unsubstituted C3 to C30 cycloalkynyl, substituted or unsubstituted C6 to C30 aryl, substituted or unsubstituted C6 to C30 aryloxy, or NRR′, wherein R and R′ are the same or different and independently include hydrogen or substituted or unsubstituted C1 to C20 alkyl, and

2<m<10,000.

6. The polycarbonate resin composition of claim 5 , wherein 2<m<1,000.

7. The polycarbonate resin composition of claim 1 , wherein the aromatic acrylic-based compound is selected from the group consisting of (meth)acrylate compounds substituted with substituted or unsubstituted C6 to C30 aryl and substituted or unsubstituted C6 to C30 aryloxy, and wherein the alicyclic acrylic-based compound is selected from the group consisting of (meth)acrylate compounds substituted with substituted or unsubstituted C3 to C30 cycloalkyl, substituted or unsubstituted C3 to C30 cycloalkenyl, and substituted or unsubstituted C3 to C30 cycloalkynyl.

8. The polycarbonate resin composition of claim 7 , wherein the aromatic acrylic-based compound, the alicyclic acrylic-based compound, or the combination thereof is selected from the group consisting of cyclohexyl(meth)acrylate, ethylphenoxy(meth)acrylate, 2-ethylthiophenyl(meth)acrylate, 2-ethylaminophenyl(meth)acrylate, phenyl(meth)acrylate, benzyl(meth)acrylate, 2-phenylethyl(meth)acrylate, 3-phenylpropyl(meth)acrylate, 4-phenylbutyl(meth)acrylate, 2-(2-methylphenyl)ethyl(meth)acrylate, 2-(3-methylphenyl)ethyl(meth)acrylate, 2-(4-methylphenyl)ethyl(meth)acrylate, 2-(4-propylphenyl)ethyl(meth)acrylate, 2-(4-(1-methylethyl)phenyl)ethyl(meth)acrylate, 2-(4-methoxyphenyl)ethyl(meth)acrylate, 2-(4-cyclohexylphenyl)ethyl(meth)acrylate, 2-(2-chlorophenyl)ethyl(meth)acrylate, 2-(3-chlorophenyl)ethyl(meth)acrylate, 2-(4-chlorophenyl)ethyl(meth)acrylate, 2-(4-bromophenyl)ethyl(meth)acrylate, 2-(3-phenylphenyl)ethyl(meth)acrylate, 2-(4-benzylphenyl)ethyl(meth)acrylate, and combinations thereof.

9. The polycarbonate resin composition of claim 8 , wherein the compound copolymerized with the aromatic acrylic-based compound, alicyclic acrylic-based compound, or combination thereof consists of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, acrylic acid, methacrylic acid, maleic anhydride, 2-hydroxyethylacrylate, 2-hydroxypropylacrylate, monoglycerolacrylate, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, allyl glycidylether, glycidylmethacrylate, styrene, α-methylstyrene, or a combination thereof.

10. The polycarbonate resin composition of claim 8 , wherein the compound copolymerized with the aromatic acrylic-based compound, alicyclic acrylic-based compound, or combination thereof consists of an alkyl methacrylate, alkyl acrylate, or a combination thereof.

11. The polycarbonate resin composition of claim 10 , wherein the modified acrylic-based copolymer (C) is a copolymer formed by polymerizing methyl methacrylate and phenyl methacrylate.

12. The polycarbonate resin composition of claim 1 , wherein the modified acrylic-based copolymer is a copolymer of about 20 wt % to about 99.9 wt % of the aromatic acrylic-based compound, alicyclic acrylic-based compound or combination thereof, and about 0.1 wt % to about 80 wt % of the compound copolymerized therewith.

13. The polycarbonate resin composition of claim 12 , wherein the modified acrylic-based copolymer is a copolymer of about 40 wt % to about 80 wt % of the aromatic acrylic-based compound, alicyclic acrylic-based compound or combination thereof, and about 20 wt % to about 60 wt % of the compound copolymerized therewith.

14. The polycarbonate resin composition of claim 1 , wherein the modified acrylic-based copolymer has a refractive index ranging from about 1.495 to about 1.59.

15. The polycarbonate resin composition of claim 1 , wherein the modified acrylic-based copolymer has a weight average molecular weight of about 5,000 g/mol to about 50,000 g/mol.

16. The polycarbonate resin composition of claim 1 , wherein the modified acrylic-based copolymer has a weight average molecular weight of about 10,000 g/mol to about 40,000 g/mol.

17. The polycarbonate resin composition of claim 1 , wherein the polycarbonate-polysiloxane copolymer and the modified acrylic-based copolymer are mixed at a weight ratio of about 12:88 to about 99:1.

18. The polycarbonate resin composition of claim 1 , wherein the polycarbonate-polysiloxane copolymer and the modified acrylic-based copolymer are mixed at a weight ratio of about 15:85 to about 90:10.

19. The polycarbonate resin composition of claim 1 , comprising

(A) about 10 wt % to about 80 wt % of the polycarbonate resin;

(B) about 15 wt % to about 90 wt % of the polycarbonate-polysiloxane copolymer; and

(C) about 4 wt % to about 50 wt % of the modified acrylic-based copolymer.

20. The polycarbonate resin composition of claim 1 , wherein the polycarbonate resin composition further comprises an additive comprising an antibacterial agent, a heat stabilizer, an antioxidant, a release agent, a light stabilizer, an inorganic material additive, a surfactant, a coupling agent, a plasticizer, admixture, a stabilizer, a lubricant, an antistatic agent, a coloring aid, a flame proofing agent, a weather-resistance agent, a colorant, an ultraviolet (UV) absorber, an ultraviolet (UV) blocking agent, a flame retardant, a filler, a nucleating agent, an adhesion aid, an adhesive, or a combination thereof.

21. A molded product made from the polycarbonate resin composition according to claim 1 .

22. The polycarbonate resin composition of claim 1 , wherein the modified acrylic-based copolymer (C) consists of a copolymer or a combination of copolymers formed by the polymerization of monomers consisting of (c1) an aromatic acrylic-based compound, alicyclic acrylic-based compound, or a combination thereof and (c2) a compound copolymerized therewith consisting of an alkyl methacrylate, alkyl acrylate, unsaturated carboxylic acid, maleic anhydride, hydroxyl group-containing acrylate, acrylamide, methacrylamide, nitrile, epoxy group containing compound, styrene, α-methylstyrene, or a combination thereof.

23. The polycarbonate resin composition of claim 1 , wherein the modified acrylic-based copolymer is a copolymer of about 20 wt % to about 80 wt % of the aromatic acrylic-based compound, alicyclic acrylic-based compound or combination thereof, and about 80 wt % to about 20 wt % of the compound copolymerized therewith.

24. The polycarbonate resin composition of claim 23 , wherein the modified acrylic-based copolymer is a copolymer of about 30 wt % to about 70 wt % of the aromatic acrylic-based compound, alicyclic acrylic-based compound or combination thereof, and about 70 wt % to about 30 wt % of the compound copolymerized therewith.

25. The polycarbonate resin composition of claim 23 , wherein the copolymerizable compound (c2) consists of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, acrylic acid, methacrylic acid, maleic anhydride, 2-hydroxyethylacrylate, 2-hydroxypropylacrylate, monoglycerolacrylate, acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, allyl glycidylether, glycidylmethacrylate, or a combination thereof.

26. The polycarbonate resin composition of claim 1 , wherein (c1) includes an alicyclic acrylic-based compound.