Scratch-resistant polycarbonate resin composition

1. A scratch-resistant polycarbonate resin composition, the resin composition consisting essentially of:

(A) about 100 parts by weight of a polycarbonate resin;

(B) about 1 to about 30 parts by weight of a phosphate ester compound represented by the following Formula (II) or a combination thereof

wherein:

R 1 , R 2 , R 4 and R 5 are each independently C 6-20 aryl or C 1-10 alkyl-substituted C 6-20 aryl,

R 3 is C 6-30 aryl or C 1-10 alkyl-substituted C 6-30 aryl derivative, and

m represents a number average degree of polymerization, and the average of m is 0 to 3; and

(C) about 0.1 to about 30 parts by weight of a halogen substituted polycarbonate oligomer represented by the following Formula (III):

wherein:

each X is independently fluorine, chlorine or bromine,

each Y is independently hydrogen, C 1-8 alkyl, fluorine, chlorine or bromine,

n is an integer of 1 to 10, and

1 is an integer of 1 to 3.

2. The polycarbonate resin composition of claim 1 , wherein R 1 , R 2 , R 4 and R 5 of Formula (II) are each independently phenyl or phenyl substituted with methyl, ethyl, isopropyl, or t-butyl and R 3 is a derivative of hydroquinone, resorcinol or bisphenol A.

3. The polycarbonate resin composition of claim 1 , wherein said halogen substituted polycarbonate oligomer of Formula (III) is a tetrabromo bisphenol A derivative wherein n is 3 to 6.

4. The polycarbonate resin composition of claim 1 , wherein said resin composition further comprises at least one additive selected from the group consisting of flame retardant aids, UV stabilizers, fluorescent whitening agents, lubricants, releasing agents, nucleating agents, antistatic agents, antioxidants, heat stabilizers, reinforcing agents, inorganic fillers, pigments, dyes, and combinations thereof.

5. The polycarbonate resin composition of claim 1 , wherein resin composition has a pencil hardness of F to 2H measured in accordance with JIS K-5401 and a light transmittance of about 80% or more measured in accordance with ASTM D1003 at a sample thickness of 2.5 mm.

6. The polycarbonate resin composition of claim 1 , wherein resin composition has a pencil hardness of F to 2H measured in accordance with JIS K-5401, a flame retardancy of V-0 measured in accordance with UL-94 at a sample thickness of 2.0 mm and a light transmittance of about 80% or more measured in accordance with ASTM D1003 at a sample thickness of 2.5 mm.

7. The polycarbonate resin composition of claim 1 , wherein resin composition has a pencil hardness of F to 2H measured in accordance with JIS K-5401, a flame retardancy of V-0 measured in accordance with UL-94 at a sample thickness of 2.0 mm, a light transmittance of about 80% or more measured in accordance with ASTM D1003 at a sample thickness of 2.5 mm and a melt flow index of about 30 to about 100 g/10 min measured in accordance with ASTM D1238 at 250° C., under 10 kg load.

8. The polycarbonate resin composition of claim 1 , wherein resin composition has a pencil hardness of F to 2H measured in accordance with JIS K-5401, a flame retardancy of V-0 measured in accordance with UL-94 at a sample thickness of 2.0 mm, a light transmittance of about 80% or more measured in accordance with ASTM D1003 at a sample thickness of 2.5 mm, a haze of about 1.5% or less, and a melt flow index of about 30 to about 100 g/10 min measured in accordance with ASTM D1238 at 250° C., under 10 kg load.

9. A molded article produced from the resin composition as defined in claim 1 .

10. The polycarbonate resin composition of claim 2 , wherein the average of m is 1 to 3, R 1 , R 2 , R 4 and R 5 of Formula (II) are each independently phenyl or phenyl substituted with methyl, ethyl, isopropyl, or t-butyl and R 3 is a derivative of hydroquinone, resorcinol or bisphenol A.

11. The polycarbonate resin composition of claim 10 , wherein R 3 is a derivative of hydroquinone or resorcinol.

12. A scratch-resistant polycarbonate resin composition, the resin composition consisting of:

(A) about 100 parts by weight of a polycarbonate resin;

(B) about 1 to about 30 parts by weight of a phosphate ester compound represented by the following Formula (II) or a combination thereof

wherein:

R 1 , R 2 , R 4 and R 5 are each independently C 6-20 aryl or C 1-10 alkyl-substituted C 6-20 aryl,

R 3 is C 6-30 aryl or C 1-10 alkyl-substituted C 6-30 aryl derivative, and

m represents a number average degree of polymerization, and the average of m is 0 to 3;

(C) about 0.1 to about 30 parts by weight of a halogen substituted polycarbonate oligomer represented by the following Formula (III):

wherein:

each X is independently fluorine, chlorine or bromine,

each Y is independently hydrogen, C 1-8 alkyl, fluorine, chlorine or bromine,

n is an integer of 1 to 10, and

1 is an integer of 1 to 3; and

optionally a UV stabilizer, fluorescent whitening agent, lubricant, releasing agent, nucleating agent, antistatic agent, antioxidant, reinforcing agent, inorganic filler, pigment, dye, or a combination thereof.

13. The polycarbonate resin composition of claim 12 , wherein the average of m is 1 to 3, R 1 , R 2 , R 4 and R 5 of Formula (II) are each independently phenyl or phenyl substituted with methyl, ethyl, isopropyl, or t-butyl and R 3 is a derivative of hydroquinone, resorcinol or bisphenol A.

14. The polycarbonate resin composition of claim 13 , wherein R 3 is a derivative of hydroquinone or resorcinol.