KR101256262B1 - Flame retardant thermoplastic resin composition and article prepared using the same - Google Patents

Abstract

Provided are a flame retardant thermoplastic resin composition comprising a flame retardant mixture of a phosphazene compound and a phosphate ester compound in a thermoplastic aromatic polycarbonate resin, and a molded article using the same. The molded article manufactured according to the flame retardant thermoplastic resin composition is excellent in flame retardancy and transparency, and at the same time, excellent in balance of physical properties such as fluidity, impact strength and heat resistance.

Polycarbonate, flame retardant, phosphazene, phosphate ester, molded products

Description

Flame retardant thermoplastic resin composition and article prepared using the same

The present specification describes a flame retardant thermoplastic resin composition and a molded article using the same.

Since polycarbonate resins have excellent heat resistance and strength, particularly impact strength and transparency, they are widely used as electrical parts, mechanical parts, and industrial resins.

In particular, when polycarbonate resin is used as a case material of TV housings, computer monitor housings, copiers, printers, notebook batteries, lithium batteries, etc., which generate a lot of heat in the electric and electronic fields, not only heat resistance and mechanical properties but also excellent flame resistance are required. .

The most common method used to impart flame retardancy to polycarbonate resins is to mix bromine or chlorine compounds, which are halogen flame retardants, with polycarbonate resins.

However, when halogen flame retardants are used, the flame retardant function is fully exhibited in the event of a fire, but hydrogen halide gas is generated during resin processing, which causes mold corrosion and environmental pollution problems. The movement to regulate the use of Korea is expanding.

In order to cope with this, a flame retardant polycarbonate composition using a alkali metal salt as a non-halogen flame retardant and a fluorinated polyolefin resin at the same time as an anti-dripping agent has been developed.

However, fluorinated ethylene-based resins and metal salt-based flame retardants used to ensure flame retardancy of polycarbonate resins cause a decrease in transparency, which is one of the advantages of polycarbonate.

In order to overcome such a drop in transparency, a silicone additive or an alloy with a silicone copolymer is used.

However, according to the research results of the present inventors, the technology using a silicone-based additives or copolymers have the advantage of being environmentally friendly as a non-halogen flame retardant, but the transparency is still low, relatively expensive and limited in the implementation of various colors when used as an exterior material I have it. In addition, there is a problem that the application to large products is limited due to the lack of fluidity for injection into a large injection molding.

It is to provide a flame retardant thermoplastic resin composition having excellent flame retardancy, transparency and mechanical strength such as impact resistance, as well as having heat resistance and excellent workability, and a method of manufacturing the same.

In embodiments of the present invention,

(A) 50-99 parts by weight of aromatic polycarbonate resin;

(B) 5 to 50% by weight of one or more phosphazenes selected from linear phosphazenes represented by the following [Formula 1] or cyclic phosphazene compounds represented by the following [Formula 2]:

(In the above [Formula 1] and [Formula 2], R represents the same or the same as the alkyl group, aryl group, alkyl substituted aryl group, aralkyl group, alkoxy group, aryloxy group, amino group and a substituent of the hydroxy group, k is 1 ~ 15)

(B.2) 50 to 95% by weight of a phosphate ester compound represented by the following [Formula 3]:

(In [Formula 3], R ₁ , R ₂ , R ₃ and R ₄ are each independently of each other, optionally halogenated C ₁ -C ₈ Alkyl, C ₆ -C ₂₀ aryl or C ₇ -C ₂₀ aralkyl, n is independently from each other 0 or 1, N is from 0 to 10, and X is a mononuclear or polynuclear aromatic group having 6 to 30 carbon atoms. It provides a flame-retardant thermoplastic resin composition comprising; 1 ~ 30 parts by weight of the mixture.

Another embodiment of the present invention provides a molded article made of the flame retardant thermoplastic resin composition.

The flame retardant thermoplastic resin composition according to the embodiments of the present invention is excellent in flame retardancy, transparency and physical property balance such as fluidity, impact strength and heat resistance. Therefore, the molded article prepared from the composition is useful for various products such as office equipment, electrical and electronic housing housing that requires transparency and flame retardancy.

Hereinafter, exemplary embodiments of the present invention will be described.

In embodiments of the present invention by applying a flame retardant mixture (B) of the phosphazene compound (B.1) and phosphate ester compound (B.2) to the thermoplastic aromatic polycarbonate resin (A), excellent flame retardancy, transparency and impact resistance It is possible to provide a thermoplastic resin composition having not only excellent mechanical strength such as or the like, but also heat resistance and excellent processability (particularly sufficient fluidity for injecting large-size injection molded products).

Flame retardant thermoplastic resin composition according to one exemplary embodiment of the present invention is 50 to 99 parts by weight of the thermoplastic aromatic polycarbonate resin (A) and the phosphazene compound (B.1) and the phosphate ester compound (B.2) Flame retardant mixture (B) 1 to 30 parts by weight.

Each component of the flame retardant thermoplastic resin composition according to the embodiments of the present invention will be described in detail.

(A) Thermoplastic Aromatic Polycarbonate Resin

Thermoplastic aromatic polycarbonate resins can be prepared from dihydric phenols, carbonate precursors and molecular weight modifiers.

The dihydric phenols, as the monomer of the polycarbonate resin, may be any material derived from the structure of the following [Formula 4].

In Formula 4, X includes an alkyl group, a sulfide, an ether, a sulfoxide, a sulfone, a ketone, or the like without any functional groups. Preferably X represents a straight, branched or cyclic alkyl group, more preferably X represents a straight, branched or cyclic alkyl group containing 1 to 10 carbons. R ₁ and R ₂ represent hydrogen, a halogen atom, a straight, branched or cyclic alkyl group. On the other hand, n and m can independently select an integer of 0 to 4.

Non-limiting examples of the dihydric phenols include bis (4-hydroxyphenyl) methane, bis (4-hydroxyphenyl) phenylmethane, bis (4-hydroxyphenyl) naphthylmethane, bis (4-hydroxy Phenyl)-(4-isobutylphenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, 1-ethyl-1,1-bis (4-hydroxyphenyl) propane, 1-phenyl-1, 1-bis (4-hydroxyphenyl) ethane, 1-naphthyl-1,1-bis (4-hydroxyphenyl) ethane, 1,2-bis (4-hydroxyphenyl) ethane, 1,10-bis (4-hydroxyphenyl) decane, 2-methyl-1,1-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxyphenyl) propane (bisphenol A) and the like. Representative of these is bisphenol A.

It is preferable to apply phosgene (carbonyl chloride) as said carbonate precursor as another monomer of polycarbonate resin.

Non-limiting examples of such carbonate precursors include carbonyl bromide, bis halo formate, diphenyl carbonate or dimethyl carbonate and the like.

The molecular weight modifier may use a monofunctional compound similar to the materials already known, that is, the monomers used to prepare the thermoplastic aromatic polycarbonate resin.

By way of non-limiting example, derivatives based on phenols (e.g., para-isopropylphenol, para-tert-butylphenol, para-cumylphenol, para-isooctylphenol, para-isononylphenol, etc.) In addition, various kinds of substances such as aliphatic alcohols may be used, and among them, para-tert-butylphenol (PTBP) is most preferably applied.

As an aromatic polycarbonate resin prepared from such a dihydric phenol, a carbonate precursor, a molecular weight modifier, for example, a linear polycarbonate resin, a branched polycarbonate resin, a copolycarbonate resin, a polyester carbonate resin, or the like There is this.

In embodiments of the present invention, it is suitable for the polycarbonate resin to comprise in particular branched polycarbonate resin. Branched polycarbonate resins are advantageous for obtaining better flame retardancy and reducing the tendency of the specimen to drip during flame retardant tests due to the excellent melt strength and morphological stability of the resin itself.

The branched polycarbonate resin is preferably mixed at 10 to 50% by weight in the total aromatic polycarbonate resin. If the content of branched polycarbonate is less than 10% by weight, the anti-dripping effect may be insignificant in the flame retardant test, and if it exceeds 50% by weight, the melt viscosity may be increased, causing problems in resin processing. have.

Meanwhile, in exemplary embodiments of the present invention, the thermoplastic aromatic polycarbonate resin is preferably applied such that the viscosity average molecular weight (M _v ) measured in methylene chloride solution is 17,000 to 40,000, and 20,000 to 30,000 is applied. More preferably.

When the average molecular weight is less than 170,000, mechanical properties such as impact strength and tensile strength may decrease, and when the average molecular weight exceeds 40,000, problems may occur in processing of the resin due to an increase in melt viscosity.

In particular, it is more preferable that the said average molecular weight is 20,000 or more from the point that impact strength, tensile strength, etc. are excellent in mechanical properties, and it is more preferable that the said average molecular weight is 30,000 or less from a viewpoint of workability.

In the flame retardant thermoplastic resin composition according to the embodiments of the present invention, the content of the polycarbonate resin is used in an amount of 50 to 99 parts by weight. In a non-limiting example, the content of the polycarbonate resin is preferably 80 to 90 parts by weight in terms of excellent heat resistance and impact strength.

(B) flame retardant mixture

(B.1) Phosphagen Compounds

The phosphazene compound according to embodiments of the present invention is one or a mixture of linear phosphazenes represented by the following [Formula 1] or cyclic phosphazene compounds represented by the following [Formula 2].

[Formula 1]

[Formula 2]

The cyclic phosphazene compound of [Chemical Formula 2] is more preferable than the linear phosphazene compound of [Chemical Formula 1] in view of the increase of flame retardancy and other physical properties during mixing. In view of this aspect, in a non-limiting example, it is preferable to allow the linear phosphazene compound and the cyclic phosphazene compound to be used in a weight ratio of 0: 100 to 50:50.

In a non-limiting example, in the case of a mixture of the linear phosphazene compound and the cyclic phosphazene compound, it is preferable to use the cyclic phosphazene compound in an amount of 50 wt% or more and less than 100 wt% in the total phosphazene compound.

In [Formula 1] and [Formula 2], R represents the same or different alkyl, aryl group, alkyl substituted aryl group, aralkyl group, alkoxy group, aryloxy group, amino group and substituents of hydroxy group. k is an integer of 1-15.

Non-limiting examples of phosphazenes that can be used in embodiments of the present invention include phenoxyphosphazenes, propoxyphosphazenes, methylphenoxyphosphazenes, and the like, of which phenoxyphosphazenes are preferred. Do.

The phosphazene used in the embodiments of the present invention may use one kind or a mixture of two or more kinds, and the substituents represented by R may not be the same, and the functional groups described above may be mixed in two or more different kinds. Can be used.

Such phosphazenes can be obtained by substituting some functional groups with phenoxy groups and subsequently substituting other functional groups, for example phenoxypropoxyphosphazenes. Phosphagens are generally synthesized by substitution reactions such as chlorophosphazenes and alcohols and phenols. For reference, a method for synthesizing a linear or cyclic phosphazene compound represented by the above formula is known, and can be synthesized according to the method described in, for example, "Phosphorus-Nitrogen Compounds" by HRAllcock, Academic Press, (1972), and the like. .

The cyclic phosphazene compound used in the embodiments of the present invention may be obtained as a mixture of k = 1 to 3 in [Formula 2].

In a non-limiting example, as the cyclic phosphazene compound, a cyclic phosphazene mixture having a cyclic phosphazene compound content of k = 1 in [Formula 2] of 60% by weight or more in the total cyclic phosphazene represented by [Formula 2] is used. It is desirable to.

More preferred are mixtures having a cyclic phosphazene compound content of k = 1 or higher and at least 80% by weight, and still more preferred mixtures having a cyclic phosphazene compound content of k = 1 and more than 90% by weight. The higher the content of the cyclic phosphazene compound of k = 1, the better the thermal retention stability at high temperatures during molding and reducing the phenomenon of yellowing of the resin composition upon prolonged stay in the injection molding machine.

In a non-limiting example, as long as the effect is not impaired, the cyclic phosphazene compound of k = 2-15 may be present in [Formula 2].

In addition, in a non-limiting example, the cyclic phosphazene compound may be used having a phosphorus content of 10 to 15% by weight in the cyclic phosphazene.

(B.2) Phosphate Ester Compounds

The phosphate ester compound used in the embodiments of the present invention is a phosphate ester compound of [Formula 3].

(3)

In Formula 3, R ₁ , R ₂ , R ₃ and R ₄ are each independently of each other, optionally halogenated C ₁ -C ₈ alkyl, preferably C ₁ -C ₄ alkyl or halogen, preferably Preferably C ₅ -C ₆ cycloalkyl, C ₆ -C ₂₀ aryl or C ₇ -C ₂₀ aralkyl, which may each be optionally substituted with chlorine or bromine. Particularly preferred aryl groups are cresyl, phenyl, xylenyl, propylfetyl or butylphenyl, and their corresponding brominated and chlorinated derivatives.

In Formula 3, n may be 0 or 1 independently of each other, and preferably 1. In Formula [3], N is 0-10 as an average value, Preferably it is 0.3-8, More preferably, it is 0.5-5.

In [Formula 3] X is a mononuclear aromatic or polynuclear aromatic group having 6 to 30 carbon atoms, which may be derived from diphenylphenol, bisphenol A, resorcinol or hydroquinone, or chlorinated or brominated derivatives thereof.

Preferred phosphate ester compounds used in the embodiments of the present invention include the phosphate ester compounds of the following [Formula 5].

[Chemical Formula 5]

In [Formula 5], R ₁ , R ₂ , R ₃ and R ₄ , n and N are the same as defined in [Formula 3], R ₅ and R ₆ are independently of each other C ₁ -C ₄ alkyl, preferably Preferably methyl or halogen of chlorine or bromine. Y is C ₁ -C ₇ alkylidene, C ₁ -C ₇ alkylene, C ₅ -C ₁₂ cycloalkylene, C ₅ -C ₁₂ cycloalkylidene, -O-, -S-, -SO-, -SO ₂ -or -CO- is represented and a represents the integer of 0-2.

In Formula 5, Y is preferably C ₁ -C ₇ alkylidene and more preferably isopropylidene or methylene.

As the phosphate ester compound used in the resin composition according to the embodiments of the present invention, monophosphate (N = 0), oligophosphate (average value in the range of N = 1-10) or a mixture of monophosphate and oligophosphate may be used. .

Preferred examples of the phosphate ester compound used in the resin composition according to the embodiments of the present invention are resorcinol bis (diphenyl phosphate), bisphenol-A bis (diphenyl phosphate), resorcinol bis (di 2,6- Dimethylphenyl phosphate).

In embodiments of the invention, a mixture of phosphazene of (B.1) and phosphate ester of (B.2) is used at 5-50% by weight and 50-95% by weight, respectively. If the phosphazene of (B.1) is less than 5% by weight, sufficient flame retardancy may not be exhibited. If it exceeds 50% by weight, the basic color and color stability of the resin composition may be lowered. In addition, when the phosphate ester of (B.2) is less than 50% by weight, the fluidity of the resin composition is inferior, and when it exceeds 95% by weight, flame retardancy and heat resistance may be lowered.

In the embodiments of the present invention, the flame retardant mixture is used in the range of 1 to 30 parts by weight based on 100 parts by weight of the total thermoplastic resin composition, and preferably in the range of 8 to 25 parts by weight. If the content of the flame retardant mixture is less than 1 part by weight, the flame retardancy is poor, and if it exceeds 30 parts by weight, the mechanical strength and the heat resistance may be lowered.

In the resin composition according to the embodiments of the present invention, in order to improve flame retardancy, a known commercial flame retardant and a flame retardant aid may be additionally used in addition to the mixture of phosphazene and phosphate ester. Non-limiting examples of such components include organic phosphate ester compounds, phosphazene compounds, metal salt compounds, halogen containing compounds and the like.

Such metal salt compounds are generally known and can be used in large amounts in compounds containing polycarbonates. All metal salt compounds suitable for the resin composition containing the polycarbonate can be used in the resin composition according to the embodiments of the present invention. Non-limiting examples include organic and inorganic sulfonates (eg sodium trichlorobenzene sulfonate), salts of sulfone sulfonate (eg potassium salt of diphenylsulfone sulfonate), perfluorinated al sulfonic acid Salts and sodium aluminum hexafluoride.

Non-limiting examples of such halogen-containing compounds include decabromodiphenylether, octabromodiphenyl, octabromodiphenylether and tetrabromobisphenol A or other oligomeric or polymeric derivatives derived from nucleobrominated polyphenylene ethers. Bromine compounds.

The resin composition according to embodiments of the present invention may further contain a metal compound (eg, antimony oxide, etc.) serving as a synergist. This synergist is generally used with halogen containing compounds.

The resin composition according to the embodiments of the present invention adds an inorganic filler such as silica, silicate, alumina, glass fiber, glass beads, glass flakes, clay, talc, mica, calcium carbonate, etc. to increase rigidity, heat resistance, and dimensional stability. It may be contained, and may be incorporated in 1 to 50 parts by weight based on the total resin composition.

In addition, the resin composition according to the embodiments of the present invention may further contain an organic filler such as carbon fiber, carbon black, etc. in order to increase black color expression and conductivity, the content of which is 1 to 30 relative to the total resin composition It may be incorporated in parts by weight.

In addition, the resin composition according to embodiments of the present invention may further include an antioxidant, a heat stabilizer, a mold release agent, a lubricant, an ultraviolet stabilizer, etc. as other processing aids, and they may be used in an amount of 0.01 to 0.5 parts by weight based on the total resin composition. Can be.

Embodiments of the present invention also relates to a molded article comprising the above resin composition. The molded articles include interior materials and exterior materials that require flame retardancy and transparency, and specifically include, but are not limited to, housings of computer terminals, office equipment, and electrical and electronic products.

Hereinafter, one or more exemplary embodiments of the present invention will be described in more detail through non-limiting and exemplary embodiments.

[Compound used]

The compounds used for the test were as follows.

(A) Polycarbonate

(A.1) Linear polycarbonates derived from bisphenol-A, intrinsic viscosity 0.50 dl / g (viscosity average molecular weight (Mv) measured at 25 ° C., methylene chloride is 22,300)

(A.2) Branched polycarbonates derived from bisphenol-A, intrinsic viscosity 0.56 dl / g (viscosity average molecular weight (Mv) measured at 25 ° C., methylene chloride is 25,600)

(B) flame retardant compound

(B.1) A cyclic phosphazene compound represented by the structure of [Formula 2] wherein R is phenoxy, and the content of k = 1 is 65% by weight.

(B.2) A cyclic phosphazene compound represented by the structure of [Formula 2] wherein R is phenoxy, and the content of k = 1 is 83 wt%

[Formula 2]

(B.3) Bisphenol-A bis (diphenyl phosphate) (CR-741 from Daihachi, Japan) was used.

[Prescriptions of Examples 1 to 5 and Comparative Examples 1 to 4]

Each compound was uniformly dispersed by mixing in a Henschel mixer with the composition shown in the following [Table 1], and then extruded at a temperature of 240˜270 ° C. in a twin screw melt mixing extruder having L / D = 40 and φ = 25 mm to form pellets. After the preparation, the sample was injection molded at a temperature of 240 to 270 ° C. after drying for 4 hours or more in a hot air dryer at 80 to 100 ° C.

Example Comparative example One 2 3 4 5 One 2 3 4 Furtherance ( Weight portion ) (A) Polycarbonate (A.1) 50 50 85 85 50 85 85 50 25 (A.2) 35 35 - - 35 - - 35 60 (B) flame retardant compound (B.1) 2 - - - - 15 - - - (B.2) - 2 2 4 7 - - 13 2 (B.3) 13 13 13 11 8 - 15 2 13

[Measurement of Properties]

The physical properties of the injection molded article specimens were measured by the following method.

(1) Flowability: It measured at 300 degreeC and 1.2 kg _f based on ASTMD1238.

(2) Impact strength: In accordance with ASTM D256 was evaluated by notching the test piece (notch). The final test result was calculated as the average of the test results of 10 test pieces.

(3) Total light transmittance: A specimen of 3 mm thickness was evaluated according to ASTM D1003.

(4) Coloring stability: Yellowness Index (YI) was measured by permeation in accordance with ASTM D1925. At this time, the injection molding conditions were set to 270 ℃ and 300 ℃, respectively, in order to evaluate the color stability in the basic color and high temperature processing conditions.

The basic color was evaluated by the yellow index of the specimen molded _{at 270 ° C} , and the color stability was evaluated from the change of the yellow index (ΔYI _{300 ° C-270 ° C} ) of the specimen molded at 270 ° C and 300 ° _C.

(5) Heat deflection temperature: 18.6kg _f in accordance with ASTM D648 Measured at the load.

(6) Flame retardancy: Measured by the UL-94 flame retardant test method, a method defined by the United States Underwriter's Laboratories (UL). This method is a method of evaluating the flame retardancy from the burning time and dripping property after attaching the flame of the burner to the vertically fixed specimen of constant size for 10 seconds. Combustion time is the length of time that the specimen continues flame burning after the flame has been dropped away. And the degree of flame retardancy is divided according to the following [Table 2].

division V-2 V-1 V-0 1st / 2nd combustion time of each sample 30 seconds or less 30 seconds or less Less than 10 seconds Total combustion time of five samples 250 seconds or less 250 seconds or less 50 seconds or less Cotton ignition by drip has exist none none

[Property Measurement Results]

The evaluation results of measuring the physical properties of the molded article specimens of Examples 1 to 5 and Comparative Examples 1 to 4 according to the above method are shown in the following [Table 3].

Example Comparative example One 2 3 4 5 One 2 3 4 Fluidity (g / 10min) 35 36 42 40 32 34 47 31 20 Impact Strength (1 / 8〃, kg _f cm / cm) 7.4 7.3 6.8 6.9 7.0 7.2 6.0 8.2 8.7 Total light transmittance (%) 88 89 89 88 88 87 89 87 88 Yellow Index (YI _{270 ℃} ) 1.24 0.95 0.94 1.32 1.64 2.54 0.83 2.27 1.02 Yellow Index (YI _{300 ℃} ) 1.62 1.13 1.11 1.64 2.13 4.26 0.99 3.43 1.20 ΔYI _{300 ℃ -270 ℃} 0.38 0.18 0.17 0.32 0.49 1.72 0.16 1.16 0.18 Heat Deflection Temperature (℃) 98 98 97 100 103 109 90 106 99 UL 94 flame retardant (2.0mm) V-1 V-1 V-1 V-1 V-1 V-1 V-2 V-1 V-1 Total combustion time (seconds) 57 51 66 58 52 47 87 44 48

As shown in Table 3, Examples 1 to 5 were excellent in flame retardancy and transparency, and excellent in fluidity, heat resistance, basic color, and coloring stability.

On the other hand, when using the phosphazene compound alone as in Comparative Example 1, the basic color and color stability is lowered, when using the phosphate ester compound alone as in Comparative Example 2 it can be seen that the flame retardancy and heat resistance is poor there was.

In addition, when the content of the phosphazene compound is large as in Comparative Example 3, there is a problem in that the fluidity is inferior and the basic color and the color stability are inferior. For reference, in Comparative Example 3 (B.1) component (13 parts by weight of 100 parts by weight of the total composition) corresponds to 86.7% by weight of the component (B) (15 parts by weight of 100 parts by weight of the total composition), (B .2) the component corresponds to 13.3% by weight (2 parts by weight of 100 parts by weight of the total composition).

In addition, when the content of the branched polycarbonate is large as in Comparative Example 4, it was confirmed that the fluidity is greatly reduced.

Claims (11)

(A) 50-99 parts by weight of aromatic polycarbonate resin; And (B) (B.1) 5 to 50% by weight of the cyclic phosphazene compound represented by the following [Formula 2] [Formula 2]

(In [Formula 2] R represents a phenoxy group, k is 1 to 15, k is a cyclic phosphazene compound of 1 is at least 80% by weight of the total cyclic phosphazene compound.) (B.2) 50 to 95% by weight of a phosphate ester compound represented by the following [Formula 3]: (3)

(In Formula 3, R ₁ , R ₂ , R ₃ and R ₄ are each independently of each other, optionally halogenated C ₁ -C ₈ alkyl, C ₆ -C ₂₀ aryl or C ₇ -C ₂₀ aralkyl. , n is 0 or 1 independently of each other, N is 0 to 10, X is a mononuclear or polynuclear aromatic group having 6 to 30 carbon atoms.) A mixture of 1 to 30 parts by weight; flame retardant thermoplastic resin composition comprising a. The method of claim 1, The aromatic polycarbonate resin is a composition comprising a branched polycarbonate resin 10 to 50% by weight of the total aromatic polycarbonate resin. The method of claim 1, The aromatic polycarbonate resin is a composition, characterized in that the viscosity average molecular weight (M _v ) measured in methylene chloride solution is 17,000 ~ 40,000. The method of claim 1, Wherein said aromatic polycarbonate resin is at least one aromatic polycarbonate resin selected from the group consisting of linear polycarbonate resins, branched polycarbonate resins, polyester-carbonate resins, and copolycarbonates. delete delete delete delete The method of claim 1, The phosphate ester compound is characterized in that it comprises a phosphate ester compound represented by the following [Formula 5]. [Chemical Formula 5]

(In [Formula 5], R ₁ , R ₂ , R ₃ and R ₄ are each independently of each other, optionally halogenated C ₁ -C ₈ Alkyl, C ₆ -C ₂₀ aryl or C ₇ -C ₂₀ aralkyl, n is independently of one another 0 or 1, and N is 0-10. R ₅ and R ₆ are independently of each other C ₁ -C ₄ alkyl or halogen, Y is C ₁ -C ₇ alkylidene, C ₁ -C ₇ alkylene, C ₅ -C ₁₂ cycloalkylene, C ₅ -C ₁₂ cycloalkylidene, -O-, -S-, -SO-, -SO ₂ -or -CO-, and a represents an integer of 0 to 2. The method of claim 1, Wherein said phosphate ester compound is at least one selected from resorcinol bis (diphenyl phosphate), bisphenol-A bis (diphenyl phosphate), resorcinol bis (di 2,6-dimethylphenyl phosphate). A molded article comprising the composition according to any one of claims 1 to 4 or 9 or 10.