KR100211180B1 - The resin composition of thermoplastic polycarbonate having flame retarding property - Google Patents

Abstract

The thermoplastic resin composition of the present invention comprises (A) 50 to 95 parts by weight of (a ₁ ) halogen-free thermoplastic polycarbonate resin, and (a ₂ ) styrene, alpha-methylstyrene, and nuclear substituted styrene. 0-30 parts by weight of a styrene-containing copolymer resin consisting of 80 parts by weight and 20-50 parts by weight of at least one of acrylonitrile, methyl methacrylate and butyl acrylate, and (a ₃ ) styrene, alpha methyl styrene and nuclear substitution Rubber-modified styrene-containing graft in which a mixture of 30 to 65 parts by weight of styrene and at least 10 to 30 parts by weight of acrylonitrile, methyl methacrylate and butyl acrylate is grafted to 15 to 60 parts by weight of rubber. 100 parts by weight of a base resin consisting of 5 to 50 parts by weight of a copolymer copolymer resin; (B) 3 to 20 parts by weight of a phosphate ester compound; (C) 1 to 20 parts by weight of the bisphenyl sulfone compound; And (D) 0 to 2 parts by weight of the fluorinated polyolefin resin.

Description

[Name of invention]

Thermoplastic polycarbonate resin composition having flame retardancy

Detailed description of the invention

(Field of invention)

The present invention relates to a thermoplastic resin composition having flame retardancy. More specifically, the present invention is a flame retardant containing a phosphate ester compound and a bisphenyl sulfone compound as a flame retardant in a base resin composed of a halogen-free thermoplastic polycarbonate resin, a styrene-containing copolymer and a rubber-modified styrene-containing graft copolymer It relates to a thermoplastic resin composition having. The resin composition of the present invention may further contain a fluorinated polyolefin resin.

The thermoplastic resin composition of the present invention may be added in the required amount of inorganic additives, heat stabilizers, antioxidants, dyes, and / or pigments depending on the respective use of the resin composition.

(Background of invention)

Polycarbonate resins are used in many applications, such as electrical and electronic products and automotive parts that require high strength due to their excellent transparency, mechanical strength, and heat resistance. However, the polycarbonate resin itself has disadvantages of low notch impact strength and poor workability. Therefore, in order to improve workability and notch impact strength, it is blended with other kinds of resins. For example, a mixture of polycarbonate resin and styrene resin is a resin mixture which maintains high notch impact strength and improves processability. Since the resins of this composition are typically applied to large heat dissipation products such as computer housings or other office equipment, other essential requirements for such resin compositions are that they must be flame retardant and maintain high mechanical strength. It should be.

Many studies have been conducted to impart flame retardancy to the resin composition, and among them, a method of melt-mixing a halogen compound and an antimony compound to a polycarbonate resin has been used to impart flame retardance to the resin composition. However, the halogen compound exhibits sufficient flame retardant function in the event of fire. However, decomposition gas is generated during resin processing to cause corrosion in the mold, and the bromine compound may be different from dioxins or difuran when brominated diphenyl ether is used. Toxic gases are likely to occur that can cause fatal harm to the same body.

In addition, the use of antimony lowers the thermal stability and weather resistance, and thus has the weakness of deteriorating the physical properties during long-term stay in the injection molding machine. In order to improve the problem, a technique of using a halogen compound and a phosphate ester compound at the same time as a flame retardant in a polycarbonate resin in order to exclude the use of antimony compounds is disclosed in European Patent Publication Nos. 174,493, 286,965 and 287,895. The above patented technology has been applied to improve processability and flame retardancy by phosphorus compounds. However, the problems that cause mold corrosion due to volatilization of halogen compounds used as main flame retardants during processing have not been improved. It's a technology you can't. Therefore, in order to solve the above problems, US Patent Nos. 4,692,488, 4,914,144 and Japanese Patent Laid-Open No. 59-202240 disclose a resin composition in which flame retardancy is imparted by using a phosphate ester compound and a pullolo compound. . However, the above patented technologies are applied to the phosphate ester as a flame retardant, but the flame retardancy is secured to a satisfactory level. However, since the flame retardancy is secured only by the phosphate ester compound, the content of polycarbonate in the resin composition of the final composition is maintained in order to maintain proper properties such as heat resistance. It has a disadvantage that it must be maintained at 75 parts by weight or more. In other words, the practically usable heat-resistant temperature must be maintained at least 80 ℃ at a load of 5kg according to US test standard D-306 to be applied to the parts of electronic products.

According to the above patents, in order to maintain the practical heat resistance of the polycarbonate resin to which the phosphate ester is applied and flame retardancy conforming to the UL 94VB flame retardant standard, the content of polycarbonate should be applied to 75 parts by weight or more based on the basic resin. That is, in order to compensate for the heat resistance lowered by the amount of the phosphate ester introduced, there is a disadvantage in that the content of the polycarbonate resin having a relatively high heat resistance must be increased.

Polycarbonate resin has a flame resistance of about UL 94 V2, which is about 25 limit oxygen index (Limited Oxygen Index) required for combustion. However, when blended with the styrene-containing resin in order to improve the processability and the properties of the impact strength, which is the aforementioned disadvantage, the flame retardancy is drastically reduced. Therefore, flame retardance is achieved by adding the above phosphate ester. According to the patent technology completed by U.S. Patent No. 4,692,488, the monomolecular form of phosphate or phosphonate is applied as a flame retardant, but in the case of phosphonate, the effect of imparting flame retardancy is relatively lowered, making it difficult to commercialize. The completed resin composition is commercially available. However, the resin composition must maintain an appropriate level of polycarbonate content due to the decrease in heat resistance due to the addition of monomolecular phosphate. In order to improve the decrease in heat resistance due to the addition of single-molecule phosphate or phosphonate, a technique of improving the heat resistance compared to the conventional single-molecule phosphate ester is applied by increasing the molecular weight of the phosphate ester. Published in 202240. However, the composition obtained by simply applying a synthetic compound having increased the degree of synthesis of phosphorus compounds could be improved in heat resistance, but the flame retardant effect was decreased by increasing the degree of synthesis of phosphorus compounds, so that the same flame retardancy was achieved. Compared to molecular phosphorus compounds, there is a disadvantage in that a larger amount of phosphate is required. In addition, such an oligomeric phosphorus compound may maintain a polycarbonate content of 70 parts by weight or more to achieve suitable flame retardant properties.

This problem of the existing technology, which requires maintaining a high content of polycarbonate and applying a large amount of phosphorus compound flame retardant, has raised the manufacturing cost, thereby burdening both the resin manufacturer and the buyer.

Therefore, the present inventors apply a conventional phosphorus compound as a main flame retardant and solve the above problems and problems, and add a small amount of flame retardant by adding a bisphenyl sulfone-based compound having a synergistic effect of flame retardant to a polycarbonate and a styrene-containing resin blend. In addition to improving heat resistance while maintaining the same flame retardancy, the inventors have invented a thermoplastic flame retardant resin composition having excellent mechanical properties such as impact strength.

[Purpose of invention]

An object of the present invention is to use a relatively small amount of polycarbonate by using a phosphate ester compound and a bisphenyl sulfone type compound as a flame retardant in a base resin composed of a polycarbonate, a styrene-containing copolymer and a rubber-modified styrene-containing graft copolymer. Even if it is to provide a thermoplastic resin composition having excellent flame retardancy.

Another object of the present invention is to provide a conventional phosphate ester compound by using a phosphate ester compound and a bisphenyl sulfone compound as a flame retardant in a base resin composed of polycarbonate, a styrene-containing copolymer and a rubber-modified styrene-containing graft copolymer. In order to provide a thermoplastic resin composition having improved heat resistance than when used as.

It is still another object of the present invention to provide mechanical properties such as impact strength by using a phosphate ester compound and a bisphenyl sulfone-based compound as a flame retardant in a base resin composed of a polycarbonate, a styrene-containing copolymer and a rubber-modified styrene-containing graft copolymer. It is to provide an excellent thermoplastic resin composition.

[Summary of invention]

In the thermoplastic resin composition of the present invention, at least one of (A) 50 to 95 parts by weight of (a ₁ ) halogen-free thermoplastic polycarbonate resin, (a ₂ ) styrene, alpha-methylstyrene, and nuclear substituted styrene is 50 to 80 0 to 30 parts by weight of a styrene-containing copolymer resin consisting of 20 to 50 parts by weight of at least one of acrylonitrile, methyl methacrylate and butyl acrylate, and (a ₃ ) styrene, alpha methyl styrene and nuclear substituted styrene. Rubber-modified styrene-containing graft in which a mixture of at least one of 30 to 65 parts by weight and at least one of 10 to 30 parts by weight of acrylonitrile, methyl methacrylate and butyl acrylate is grafted to 15 to 60 parts by weight of rubber 100 parts by weight of the base resin consisting of 5 to 50 parts by weight of the copolymer resin: (B) 3 to 20 parts by weight of the phosphate ester compound: (C) 1 to 20 parts by weight of the bisphenyl sulfone compound: and (D ) It consists of 0-2 weight part of fluorinated polyolefin resins.

The resin composition of the present invention may be added with an inorganic additive, a heat stabilizer, a light stabilizer, a pigment, and / or a dye according to each use.

The details of the present description are described below.

(Detailed Description of Specific Embodiments of the Invention)

The flame retardant thermoplastic resin composition of the present invention comprises (A) (a ₁ ) halogen-free thermoplastic polycarbonate resin, (a ₂ ) styrene-containing copolymer resin and (a ₃ ) rubber-modified styrene-containing graft copolymer It consists of the base resin which consists of resin, (B) phosphate ester compound, (C) bisphenyl sulfone type compound, and (D) fluorinated polyolefin type resin.

Description of each of these components is as follows.

(A) Basic resin

The base resin (A) consists of a thermoplastic aromatic polycarbonate resin (a ₁ ), a styrene-containing copolymer resin (a ₂ ) and a rubber modified styrene-containing graft copolymer resin (a ₃ ). Polycarbonate resin (a ₁ ) is used in 50 to 95 parts by weight based on 100 parts by weight of the total base resin, styrene-containing copolymer resin (a ₂ ) is used in 0 to 30 parts by weight, rubber modified styrene-containing graft copolymer The resin (a ₃ ) is used in 5 to 50 parts by weight.

The thermoplastic aromatic polycarbonate resin (a ₁ ) is a resin produced by the reaction of a divalent phenol compound and phosgene or diester carbonate. Among the dihydric phenol compounds, 2,2'-bis (4-hydroxyphenyl) propane, ie, bisphenol A, is particularly preferable.

The styrene-containing copolymer resin (a ₂ ) blended with the polycarbonate resin (a ₁ ) and used may be 50 to 80 parts by weight of at least one of styrene, alpha-methylstyrene, and nuclear substituted styrene, and acrylonitrile and methyl methacryl. At least one of the rate and butyl acrylate consists of 20 to 50 parts by weight. As the styrene-containing copolymer resin (a ₂ ), one produced by a conventional polymerization method can be used, and one synthesized by suspension polymerization or bulk polymerization is particularly suitable.

The rubber-modified styrene-containing graft copolymer resin (a ₃ ) is 30 to 65 parts by weight of at least one of styrene, alpha methyl styrene and nuclear substituted styrene and at least one of acrylonitrile, methyl methacrylate and butyl acrylate. Is a resin obtained by grafting a mixture having 10 to 30 parts by weight of rubber to 15 to 60 parts by weight of rubber. The graft copolymer resin may be prepared by a conventional polymerization method, but is preferably one synthesized by emulsion polymerization and bulk polymerization.

When the polycarbonate weight part is 50 or less with respect to the composition, practically high heat resistance (at least 80 ° C. under 5 kg load condition of ASTM D-306) is required because a large amount of flame retardant polycarbonate is required to add a large amount of flame retardant to maintain flame retardancy. It is difficult to secure.

(B) phosphate ester compound

The flame retardant used in the present invention is a phosphate ester compound. Examples of the phosphate ester compound include triphenylphosphate, tri (2,6-dimethylphenyl) phosphate, tri (4-methylphenyl) phosphate, tricresylphosphate, diphenyl 2-ethylcresylphosphate, diphenylcresylphosphate, Monomolecular phosphate ester compounds such as tri (isopropylphenyl) phosphate, trigylenylphosphate, xylenyldiphenylphosphate, phosphate ester compounds in oligomeric form thereof, or mixtures thereof.

It is preferable to use a phosphate ester compound in the range of 3-20 weight part with respect to 100 weight part of basic resins of this invention.

(C) Bisphenyl sulfone type compound

The bisphenyl sulfone compound is a compound having the structure represented by the following structural formula (I) and is a compound having a structure completed by combining two phenols and sulfone groups, and having strong electron aspiration of sulfone and a large resonance structure of phenol sulfone bond. It is a material that shows good performance in heat of oxidation and light stability. The main application was used as a raw material for improving dyeing fastness and as a raw material for flame retardant, but the present inventors expanded the scope of application by applying the foreign matter itself as a flame retardant aid of polycarbonate resin.

Wherein at least one of R ₁ , R ₃ , and R ₅ is a hydroxy or epoxy group, and at least one of R ₆ , R ₈ and R ₁₀ is hydroxy or epoxy, and a hydride of substituents R ₁ to R ₁₀ of the above formula The remainder except for oxy or epoxy structures is hydrogen or an alkyl group having up to 4 carbon atoms.

Among the materials having the structure of formula (I), preferably 4,4'-dihydroxydiphenylsulfone or 2,4'-dihydroxydiphenylsulfone and these compounds are melted in the region of 220 ° C to 270 ° C. It is very effective in improving the flame retardant performance because it has a nonflammable performance and has a very good compatibility with polycarbonate. The bisphenyl sulfone-based compound is present as a nonflammable substance between the polycarbonate and the molecular chain of the styrene-containing polymer resin to improve the flame retardant performance of the resin composition of the present invention. Additives that impart substantially flame retardancy are maintained in good compatibility with polycarbonates when phosphate ester compounds such as component (B) or bisphenylsulfone compounds of component (C) are added to polycarbonate resins at the same time. It is completely mixed as a nonflammable material between the chains and due to this effect, a small amount of flame retardant not only increases the flame retardant effect but also improves the rigidity. The bisphenyl sulfone-based compound is applied 1 to 20 parts by weight based on 100 parts by weight of the base resin.

(D) fluorinated polyolefin resin

Fluorinated polyolefin-based resins are conventionally available resins such as polytetrafluoroethylene, polyvinylidene fluoride, copolymers of tetrafluoroethylene and vinylidene fluoride, tetrafluoride, tetrafluoroethylene and vinylidene fluoride. Copolymers and copolymers of tetrafluoroethylene and hexafluoropropylene. These may be used independently from each other, or a mixture of two or more different from each other may be used. Fluorinated polyolefin-based resins form a fibrillar network in the resin when mixed with the resin and extruded for antidripping during combustion, thereby decreasing the flow viscosity and increasing the shrinkage rate of the resin during combustion. Prevent dropping of When the fluorinated polyolefin resin in an emulsion state is used, the dispersibility of the fluorinated polyolefin resin with respect to the entire resin is good, but there is a disadvantage in that the process is complicated. Therefore, even if it is a powder state, it can use preferably if it can form a fibrous net by disperse | distributing suitably to all resin. The fluorinated polyolefin resin which can be preferably used in the present invention is polytetrafluoroethylene. Polytetrafluoroethylene having a particle size of 20 to 500 microns is suitable for mixing. The usage-amount of a fluororesin is 0-2.0 weight part with respect to 100 weight part of base resins. It is preferable not to add fluorinated polyethylene resin to achieve V-2 flame retardant properties in UL 94 VB flame retardant regulations.

The thermoplastic resin composition of the present invention may be added with an inorganic additive, a heat stabilizer, an antioxidant, a light stabilizer, a pigment, and / or a dye according to each use. The inorganic additives to be added include asbestos, glass fibers, talc, and ceramics, which may be used in the range of 0 to 50 parts by weight based on 100 parts by weight of the base resin.

The thermoplastic resin composition of the present invention is a resin composition completed by adding 3 to 20 parts by weight of the phosphate ester compound with respect to the base resin, and adding 1 to 20 parts by weight of a bisphenyl sulfone compound such as the structural formula (I). As such, when phosphorus compounds and bisphenylsulfone compounds are used as flame retardants, there is no generation of toxic gases, which is a problem when using conventional halogen flame retardants, and heat resistance generated when conventional phosphoric acid ester compounds are applied alone. Due to the improvement of the degradation performance and the synergistic effect of flame retardancy, the content of polycarbonate can be relatively reduced, so it has the same heat resistance and flame retardancy, the processing performance is very good, and the mechanical properties such as impact strength are excellent. It has the effect of having the invention.

The thermoplastic resin composition of the present invention (A) (a ₁ ) polycarbonate content of 50 to 95 parts by weight (a ₂ ) styrene-containing copolymer resin content of 0 to 30 parts by weight (a ₃ ) styrene-containing graft resin 1 to 20 parts by weight of (B) 3 to 20 parts by weight of (B) a bisphenyl sulfone compound and (D) 0 to 2 parts by weight of fluorinated polyolefin based on 100 parts of a basic resin having 5 to 50 parts by weight. It is a flame-retardant resin composition kneaded and completed.

The necessary inorganic additives, heat stabilizers, antioxidants, light stabilizers, pigments and or dyes are added to the mixture and then mixed in a conventional mixer. This mixture is prepared into pellet resin composition through an extruder.

The invention can be better understood by the following examples, which are intended for the purpose of illustration of the invention and are not intended to limit the scope of protection defined by the appended claims.

EXAMPLE

Preparation and specifications of (A) basic resin (B) phosphate ester compound and (C) bisphenylsulfone compound (D) fluorinated polyethylene resin used in Examples 1 to 8 and Comparative Examples 1 to 16 are as follows. same.

(A) Basic resin

(a ₁ ) Polycarbonate resin: 3020PJ Grade of SAMYANG, Korea was used.

(a ₂ ) Styrene-containing copolymer resin (SAN)

A SAN copolymer resin was prepared by suspension polymerization by adding 0.2 parts by weight of azobisisobutyronitrile and 0.5 parts by weight of tricalcium phosphate, which are necessary additives for a mixture of 70 parts by weight of styrene, 30 parts by weight of acrylonitrile, and 120 parts by weight of deionized water. It was. The copolymer was washed with water, dehydrated and dried to obtain a SAN copolymer resin having a powdered ecology.

(A ₃ ) Rubber modified styrene-containing graft copolymer resin (g-ABS)

Butadiene rubber latex was added so that the content of butadiene was 50 parts by weight based on the entire monomer, 1.0 parts by weight of potassium oleate, 1.0 part by weight of cumene hydroperoxide, an additive necessary for a mixture of 36 parts by weight of styrene, 14 parts by weight of acrylonitrile, and 150 parts by weight of deionized water. 0.4 parts by weight and 0.3 parts by weight of mercaptan-based chain transfer agent were added and maintained at 75 ° C. for 5 hours to complete the reaction, thereby preparing g-ABS latex. The resulting polymer latex was added with 1% sulfuric acid solution and dried after coagulation to prepare a graft copolymer resin in powder form.

(B) phosphate ester compound

(B ₁ ) Monomolecular Phosphate Ester Compound: TPP (Triphenylphosphate) from Daihachi, Japan was used.

(B ₂ ) Oligomeric Phosphate Ester Compound: CR-733S (synthesis degree N = 1.3) manufactured by Daihachi, Japan, was used.

(C) Bisphenyl sulfone type compound

Diphon A (trademark) from Yorkshire, England, was applied, with a molecular weight of 250 and a melting point of 240 ° C.

(D) fluorinated polyolefin resin

Teflon 7AJ from Mitsui Dupont, Japan, was used.

Each component was mixed as shown in Table 1 and Table 2 and extruded under the extrusion conditions of 250 ℃ to prepare a resin composition in the pellet state. The resin composition was injected to prepare a test piece. The prepared injection specimens were measured for the physical properties under the following conditions.

Flame retardancy: measured according to thickness according to UL 94 VB.

Impact strength: measured according to ASTM D256 (Notched Izod Impact Strength). Unit (kgf.cm/cm)

Heat resistance (VST): measured according to ASTM D 306 (loading condition of 5 kg).

Tensile strength: measured according to ASTM D-638. Unit (kgf / ㎠)

[Examples 1-4 and Comparative Examples 1-8]

The composition of each component used in Examples 1-4 and Comparative Examples 1-8 is shown in Table 1. Examples 1 to 4 are examples according to the resin composition of the present invention, and Comparative Examples 1 to 8 apply only a phosphate ester compound as a flame retardant without adding bis (4-hydroxyphenyl) sulfone to measure overall physical properties after processing. One result.

Embodiments according to the resin composition of the present invention have a flame retardancy of V-2 while having physical properties such as flame retardancy, heat resistance, impact strength, and the like as a whole, and having particularly practical heat resistance.

Comparing Example 1 and Comparative Examples 1 and 2, the result of Example 1 is that the heat resistance is maintained at 90 ℃, the flame retardancy is a physical property of V-2, the impact strength and tensile strength also showed good results.

However, Comparative Example 1 without adding bis (4-hydroxyphenyl) sulfone showed no flame retardancy. In addition, in the case of Comparative Example 2, in which the amount of bis (4-hydroxyphenyl) sulfone added in Example 1 was replaced by TPP, not only flame retardancy was shown but also physical properties of 80 ° C. or lower were shown in heat resistance. It is difficult to apply to the product. This tendency is also shown in Example 2 and Comparative Examples 3 and 4.

That is, by adding bis (4-hydroxyphenyl) sulfone, synergism of flame retardancy is achieved, as well as elevated heat resistance at the same flame retardancy, and as can be seen from the results of each example, bis (4-hydroxyphenyl) The addition of sulfones improves stiffness such as tensile strength.

[Examples 5 to 8 and Comparative Examples 9 to 16]

It is the result of evaluation with the composition as shown in Table 2. Examples 5 to 8 have good flame retardancy and heat resistance and show high rigidity. Comparing Example 5 with Comparative Example 11, Example 5 shows the flame retardancy of V-O and the heat resistance of 91 ° C., but Comparative Example 11 shows the performance of both the flame retardancy and the heat resistance in the same polycarbonate composition.

Simple modifications and variations of the present invention can be readily used by those skilled in the art, and all such variations or modifications can be considered to be included within the scope of the present invention.

Claims (8)

(A) 50 to 95 parts by weight of (a ₁ ) halogen-free thermoplastic polycarbonate resin, (a ₂ ) 50 to 80 parts by weight of at least one of styrene, alpha-methylstyrene and nuclear substituted styrene and acrylonitrile, 0 to 30 parts by weight of a styrene-containing copolymer resin consisting of 20 to 50 parts by weight of at least one of methyl methacrylate and butyl acrylate, and (a ₃ ) at least one of styrene, alpha methyl styrene and nuclear substituted styrene is 30 to 65 5-50 parts by weight of rubber-modified styrene-containing graft copolymer resin obtained by grafting a mixture of 10 parts by weight to 30 parts by weight of at least one of acrylonitrile, methyl methacrylate and butyl acrylate in 15 parts by weight to 60 parts by weight of rubber. 100 parts by weight of basic resin consisting of 3 parts by weight of (B) phosphate ester compound; (C) 1 to 20 parts by weight of the bisphenyl sulfone compound; And (D) 0 to 2 parts by weight of the fluorinated polyolefin resin; thermoplastic polycarbonate resin composition having a flame retardancy, characterized in that consisting of. The thermoplastic polycarbonate resin composition having flame retardancy according to claim 1, wherein the bisphenyl sulfone compound is represented by the following general formula (I):

Wherein at least one of R ₁ , R ₃ , and R ₅ is a hydroxy or epoxy group, at least one of R ₆ , R ₈ and R ₁₀ is hydroxy or epoxy, and in the substituents R ₁ to R ₁₀ of the general formula Except for hydroxy or epoxy structures, the remainder is hydrogen or an alkyl group having up to 4 carbon atoms. 3. The thermoplastic polycarbonate-based resin composition of claim 2, wherein the bisphenylsulfone compound is a material exhibiting melting in the region of 220 to 270 ° C and has a nonflammability. 3. The thermoplastic polycarbonate-based resin composition having flame retardancy according to claim 2, wherein the bisphenyl sulfone compound is 4,4'-dihydroxydiphenyl sulfone or 2,4'-dihydroxydiphenyl sulfone. . The thermoplastic polycarbonate-based resin composition of claim 1, wherein the phosphate ester compound is a monomolecular phosphate ester compound, an oligomeric phosphate ester compound, or a mixture thereof. 6. The monomolecular phosphate ester compound according to claim 5, wherein the monomolecular phosphate ester compound is triphenylphosphate, tri (2,6-dimethylphenyl) phosphate, tri (4-methylphenyl) phosphate, tricresylphosphate, diphenyl 2-ethylcresylphosphate. And diphenylcresyl phosphate, tri (isopropylphenyl) phosphate, trigylenyl phosphate, or xylenyl diphenyl phosphate, thermoplastic polycarbonate resin composition having flame retardancy. The method of claim 1, wherein the fluorinated polyolefin resin (D) is polytetrafluoroethylene, polyvinylidene fluoride, a copolymer of tetrafluoroethylene and vinylidene fluoride, tetrafluoroethylene and fluoroalkyl vinyl ether It is at least one selected from the group consisting of a copolymer of a copolymer of tetrafluoroethylene and hexafluoropropylene, thermoplastic polycarbonate-based resin composition having a flame retardancy. The flame retardant thermoplastic polycarbonate resin composition of claim 1, wherein the resin composition further comprises an inorganic additive, a heat stabilizer, an antioxidant, a light stabilizer, a pigment, and / or a dye.