KR100523738B1 - Flame Retardant Polycarbonate Resin Composition - Google Patents

Abstract

The flame retardant polycarbonate resin composition according to the present invention comprises (A) 100 parts by weight of a thermoplastic polycarbonate resin, (B) 0.01 to 10 parts by weight of a metal salt of an aromatic sulfur compound or a metal salt of perfluoroalkanesulfonic acid, and (C) a cyclic phosphazene compound. 0.1-20 parts by weight of a mixture of cyclic phosphazene oligomeric compounds formed by linking groups having -R ₂ -groups, and (D) an average particle size of 0.05-1000 μm, and a density of 1.2-2.3 g / cm 3. It is characterized by consisting of 0.05 to 5 parts by weight of the fluorinated polyolefin resin.

Description

Flame Retardant Polycarbonate Resin Composition

Field of invention

The present invention relates to a flame retardant polycarbonate resin composition. More specifically, the present invention relates to a flame retardant polycarbonate resin composition comprising a polycarbonate resin, a sulfonic acid metal salt, a phosphazene compound having a specific structure, and a fluorinated polyolefin resin, and having excellent impact resistance, heat resistance, and mechanical strength.

Background of the Invention

In general, polycarbonate resin is excellent in transparency, impact resistance, heat resistance and electrical properties, and is applied to a large injection molding product that emits a lot of heat, such as electrical, electronic and other office equipment. Therefore, it is essential to maintain flame retardancy and high mechanical strength.

Conventional techniques for imparting flame retardance to such resin compositions include the use of halogen-based flame retardants or antimony compounds. However, when halogen-based flame retardants are used, the demand for resins that do not contain halogen-based flame retardants has been rapidly expanded recently due to the problem of human health of gases generated during combustion.

A technique for imparting flame retardancy without using a halogen-based flame retardant is currently the most common method of using a sulfonic acid metal salt or a phosphorus compound. Examples of sulfonic acid metal salts widely used in flame retardant polycarbonate resin compositions include perfluoroalkane sulfonates such as potassium perfluorobutane sulfonate (KPFBS), and potassium diphenylsulfon sulfonate (KSS) is also used.

U.S. Patent No. 3,775,367 discloses the use of resins using perfluoroalkane sulfonates for polycarbonate resins. However, the advantages to be obtained using only these materials are limited and in practice additional additives are generally used.

Known techniques for improving the flame retardancy of compositions of this type while maintaining transparency include the addition of soluble organic halogen additives. Typical of these is the use of tetrabromobisphenol-A (TBBA). Brominated additives, however, are suitable for compositions that are required to meet the "ECO-affinity" standard, since the standard forbids the inclusion of bromine or chlorine.

A method of using a metal salt with a silicon compound has also been reported, but Japanese Patent Laid-Open Nos. 2-150436, 3-38947, PCT International Publications WO 99/028387 and WO 2000/64976 disclose metal salts and silicone compounds. Although the method of using together is disclosed, in this case, it also failed to overcome the fundamental problem that a flame retardance fell and the reduction of addition amount was also difficult.

Phosphoric acid-based flame retardant is used as a flame retardant among the phosphorus compounds, but in the resin composition using the same, there is a problem in that the flame retardant moves to the surface of the molding during molding, causing surface cracking, that is, "juice" phenomenon. There is also a problem that the degree is sharply lowered.

Other phosphorus compound flame retardants include phosphazene compounds. EP 728,811 discloses a flame retardant resin composition composed of an aromatic polycarbonate resin, a graft copolymer, a vinyl copolymer and a phosphazene compound. This patent shows that phosphazene compound can be used as a flame retardant so that no dropping occurs during combustion without a separate antidropping agent, and excellent heat resistance and impact strength can be obtained. However, when the phosphazene compound is used as a flame retardant, mechanical strength such as flexural strength and flexural modulus of the resin composition is lowered, and there is a problem that many flame retardants must be used to exhibit an excellent flame retardant grade.

PCT International Publications WO 00 / 09,518 and WO 99 / 19,383 disclose methods for preparing crosslinked linear or cyclic phenoxyphosphazene compounds and thermoplastic resin compositions using the same. This patent shows that the crosslinked phenoxyphosphazene compound has a high melting point and low volatility, and thus does not deteriorate inherent properties of the resin when applied to the resin composition. In this case, the crosslinked phenoxyphosphazene compound is used. As a result, workability is lowered due to fluidity decrease of the resin composition, mechanical strength such as flexural strength and flexural modulus of the resin composition is lowered, and there is a problem that many flame retardants must be used in order to exhibit excellent flame retardant grade.

In order to solve the above problems, the present inventors add a sulfonic acid metal salt, a specific structure phosphazene compound, and a fluorinated polyolefin-based resin to a polycarbonate resin, so that the flame retardant poly having excellent flame resistance without deteriorating the heat resistance and impact resistance of the resin, etc. It is early to develop a carbonate resin composition.

An object of the present invention is to provide a polycarbonate resin composition excellent in flame retardancy.

Another object of the present invention is to provide a polycarbonate resin composition excellent in impact resistance.

Still another object of the present invention is to provide a polycarbonate resin composition having excellent heat resistance.

Still another object of the present invention is to provide a polycarbonate resin composition having excellent mechanical strength.

The above and other objects of the present invention can be achieved by the present invention described below.

The flame retardant polycarbonate resin composition according to the present invention comprises (A) 100 parts by weight of a thermoplastic polycarbonate resin, (B) 0.01 to 10 parts by weight of a metal salt of an aromatic sulfur compound or a metal salt of perfluoroalkanesulfonic acid, (C) 0.1-20 parts by weight of a mixture of cyclic phosphazene oligomeric compounds formed by linking a cyclic phosphazene compound having a structure with a linking group having a -R ₂ -group, and (D) an average particle size of 0.05-1000 μm, It is characterized by consisting of 0.05 to 5 parts by weight of a fluorinated polyolefin resin of 1.2 to 2.3 g / cm 3.

[Formula 1]

Wherein R ₁ represents a substituent optionally selected from alkyl, aryl, alkyl substituted aryl, aralkyl, alkoxy, aryloxy, amino or hydroxy groups, k and m being 0 or an integer from 1 to 10 The alkoxy group or aryloxy group may be substituted with an alkyl group, an aryl group, an amino group, or a hydroxy group, and R ₂ is C ₆ -C ₃₀ dioxyaryl or alkyl substituted C ₆ -C ₃₀ dioxyaryl group derivative. , n is the number average degree of polymerization, the average value of n is 0.3 to 3)

Hereinafter, each component of the present invention will be described in detail below.

(A) polycarbonate resin

The aromatic polycarbonate resin (A) used in the preparation of the resin composition according to the present invention can be prepared by reacting diphenols having a structure of the following formula (2) with phosgene, halogen formate or diester carbonate.

[Formula 2]

(Wherein A represents a single bond, C ₁ -C ₅ alkylene, C ₁ -C ₅ alkylidene, C ₅ -C ₆ cyclo alkylidene, -S- or -SO _2- ).

Specific examples of the diphenol of Formula 2 include hydroquinone, resorcinol, 4,4'-dihydroxydiphenyl, 2,2-bis- (4-hydroxyphenyl) -propane, 2,4-bis- (4 -Hydroxyphenyl) -2-methylbutane, 1,1-bis- (4-hydroxyphenyl) -cyclohexane, 2,2-bis- (3-chloro-4-hydroxyphenyl) -propane, 2, 2-bis- (3,5-dichloro-4-hydroxyphenyl) -propane etc. are mentioned. Among them, 2,2-bis- (4-hydroxyphenyl) -propane, 2,2-bis- (3,5-dichloro-4-hydroxyphenyl) -propane, 1,1-bis- (4- Hydroxyphenyl) -cyclohexane and the like are preferred, and the aromatic polycarbonate (A) most commonly used industrially is prepared from 2,2-bis- (4-hydroxyphenyl) -propane, also called bisphenol-A. Most preferred.

Suitable polycarbonates (A) used in the production of the resin composition of the present invention include those having a weight average molecular weight of 10,000 to 200,000, particularly preferably 15,000 to 80,000.

The polycarbonate (A) of the present invention may be a branched chain, preferably 0.05 to 2 mol% of tri- or more polyfunctional compounds, such as trivalent, based on the total amount of diphenols used for polymerization. Or it can manufacture by adding the compound which has more phenol groups.

Examples of the polycarbonate (A) of the present invention include homo polycarbonates and copolycarbonates, and may also be used in the form of a blend of copolycarbonates and homo polycarbonates.

The polycarbonate (A) may be partially or wholly replaced with an aromatic polyester-carbonate resin obtained by polymerization in the presence of an ester precursor, such as a bifunctional carboxylic acid.

In the flame retardant polycarbonate resin composition according to the present invention, the other components are mixed based on 100 parts by weight of the polycarbonate resin (A).

(B) sulfonic acid metal salts

The sulfonic acid metal salt used in the resin composition according to the present invention may be a metal salt of an aromatic sulfur compound such as a metal salt of an aromatic sulfonamide having a structure of Formula 3 or 4 below, or a metal salt of an aromatic sulfonic acid having a structure of Formula 5 below. It is a metal salt of perfluoro alkanesulfonic acid which has a structure of 6.

[Formula 3]

(Wherein Ar represents a phenyl group or an alkyl-substituted phenyl group and M represents a metal cation.)

[Formula 4]

(Wherein Ar represents a phenyl group or an alkyl-substituted phenyl group, R ₃ represents an organic group which may contain a sulfonyl group or a carbonyl group, or Ar may bond with R _3, and M represents a metal cation.)

[Formula 5]

(Wherein R ₄ and R ₅ are the same or independently of each other, a C ₁ -C ₆ aliphatic group, a phenyl group, a biphenyl group or an alkyl substituted phenyl group, x is an integer from 0 to 6, y is a value of 1 to 6 Is an integer having, and M represents a metal cationic group.)

[Formula 6]

(Wherein M is a metal cation and l represents an integer of 1 to 8).

Preferred examples of metal salts of aromatic sulfonamides used in the present invention include metal salts of saccharin, metal salts of N- (p-tolylsulfonyl) -p-toluenesulfoimide, N- (N'-benzylaminocarbonyl) sulfanyl Metal salts of imides and metal salts of N- (phenylcarboxyl) -sulfanimide. Moreover, as a metal salt of aromatic sulfonic acid, the metal salt of diphenyl sulfone-3- sulfonic acid, the metal salt of diphenyl sulfone-3, 3'- disulfonic acid, and the metal salt of diphenyl sulfone-3, 4'- disulfonic acid are mentioned. You may use these in combination of 1 type or more. Suitable metals used at this time include metals of group I (alkali metals) such as sodium and potassium, metals of group II (alkaline earth metals), copper, aluminum, and the like, with alkali metals being particularly preferred.

Among the metal salts of the aforementioned aromatic sulfonamides, in particular, potassium salts of N- (p-tolylsulfonyl) -p-toluenesulfoimide, potassium salts of N- (N'-benzylaminocarbonyl) sulfanimide, or Potassium salt of diphenylsulfone-3-sulfonic acid is preferably used, more preferably potassium salt of N- (p-tolylsulfonyl) -p-toluenesulfoimide, N- (N'-benzylaminocarbonyl) Potassium salt of sulfanilimide is used.

Preferred examples of the metal salt of perfluoroalkanesulfonic acid of the present invention include metal salts of perfluoromethanesulfonic acid, metal salts of perfluoroethanesulfonic acid salts, metal salts of perfluoropropanesulfonic acid, metal salts of perfluorobutanesulfonic acid, and perfluoropentanesulfonic acid. And metal salts of perfluorohexanesulfonic acid, metal salts of perfluoroheptanesulfonic acid, metal salts of perfluorooctane sulfonic acid, and the like. You may use these in combination of 1 type or more. The metal salt of perfluoroalkanesulfonic acid may be used in combination with the metal salt of the aromatic sulfur compound described above.

Suitable metals used for the metal salt of perfluoroalkanesulfonic acid of the present invention include metals of group I (alkali metals) such as sodium and potassium, metals of group II (alkaline earth metals), copper, aluminum, and the like. Metal is preferred. Among these, potassium salt of perfluorobutanesulfonic acid is especially used preferably.

The metal salt of the aromatic sulfur compound or the metal salt of perfluoroalkanesulfonic acid used in the flame retardant polycarbonate resin composition according to the present invention is used 0.01 to 10 parts by weight, more preferably 0.01 to 5 parts by weight.

(C) oligomeric compounds of cyclic phosphazene

Specific structure phosphazene compound used in the present invention is a mixture of cyclic phosphazene oligomeric compound consisting of a cyclic phosphazene compound having the structure of formula (1) is connected by a linking group having a -R ₂ -group to be.

[Formula 1]

Wherein R ₁ represents a substituent optionally selected from an alkyl group, an aryl group, an alkyl substituted aryl group, an aralkyl group, an alkoxy group, an aryloxy group, an amino group, or a hydroxy group, where k and m are integers ranging from 0 or 1 to 10 The alkoxy group or aryloxy group may be substituted with an alkyl group, an aryl group, an amino group, or a hydroxy group, etc. In addition, R ₂ may be C ₆ -C ₃₀ dioxyaryl or alkyl substituted C ₆ -C ₃₀ dioxyaryl. N is the number average degree of polymerization, and the average value of n is 0.3 to 3.)

For example, when (n + 1) cyclic phosphazene compounds are linked to each other, the oligomeric compound of cyclic phosphazene, in which the number average degree of polymerization of the structure of Chemical Formula 1 is represented by n, may be represented.

Preferred cyclic phosphazene oligomeric compounds are mixtures of cyclic phosphazene oligomeric compounds having a number average degree of polymerization of n of 0.3 to 3, and in the present invention, oligomeric compounds having a degree of polymerization of 0 to 10 may be used alone or in a mixed form. It is also preferable to use a mixture of the respective components when the polymerization process is prepared, or to mix cyclic phosphazene oligomeric compounds having a different number average degree of polymerization. In the present invention, not only the cyclic phosphazene compound is linearly connected, but also a cyclic phosphazene oligomeric compound having a branched structure may be used.

Examples of preferred R ₁ of Formula 1 include an alkoxy group, an aryloxy group, and the like, and more preferably, a phenoxy group.

Preferred R ₂ of Chemical Formula 1 may be derived from catechol, resorcinol, hydroquinone, or bisphenylenediol having a structure of Chemical Formula 7 below.

[Formula 7]

Wherein Y represents C ₁ -C ₅ alkylene, C ₁ -C ₅ alkylidene, C ₅ -C ₆ cycloalkylidene, -S- or -SO _2- , z is 0 or 1 to be.)

The method for producing the cyclic phosphazene oligomeric compound used in the present invention is not particularly limited and may be prepared by the following method.

The alkyl alcohol (or aryl alcohol) is first reacted with an alkali metal hydroxide such as sodium hydroxide or lithium hydroxide to obtain an alkali metal alkylate (or alkali metal arylate). In the same manner, an alkali metal diphenolate can be obtained by reacting diols having an R ₂ group with an alkali metal hydroxide. The cyclic dichlorophosphazene compound is reacted with a mixture of an alkali metal alkylate (or alkali metal arylate) and an alkali metal diphenolate in an appropriate ratio, and then further reacted with an alkali metal alkylate (or alkali metal arylate). It is possible to obtain a cyclic phosphazene oligomeric compound.

The content of the oligomeric compound of the cyclic phosphazene used in the flame retardant polycarbonate resin composition according to the present invention is used 0.1 to 20 parts by weight, more preferably 0.5 to 15 parts by weight.

(D) fluorinated polyolefin resin

Fluorinated polyolefin resins (D) used in the production of flame retardant polycarbonate resin compositions according to the present invention are conventionally available resins such as polytetrafluoroethylene, polyvinylidene fluoride, tetrafluoroethylene / vinylidene fluoride. Copolymers, tetrafluoroethylene / hexafluoropropylene copolymers, ethylene / tetrafluoroethylene copolymers, and the like. These may be used independently from each other, and two or more different types may be used together.

When the fluorinated polyolefin resin (D) of the present invention is mixed and extruded together with the other component resins of the present invention, it forms a fibrous network in the resin to reduce the flow viscosity of the resin during combustion and reduce the shrinkage rate. Increase to prevent dripping of the resin.

The fluorinated polyolefin resin (D) used in the preparation of the resin composition according to the present invention may be prepared using a known polymerization method, for example, a pressure of 7 to 71 kg / cm 2 and a temperature of 0 to 200 ° C., Preferably it can be prepared in an aqueous medium containing free radical forming catalysts such as sodium, potassium, or ammonium peroxydisulfate at conditions of 20-100 ° C.

The fluorinated polyolefin resin may be used in an emulsion state or a powder state. When the fluorinated polyolefin resin in the emulsion state is used, the dispersibility in the entire resin composition is good, but there is a disadvantage in that the manufacturing process is complicated. Therefore, even if it is powder state, if it can disperse | distribute suitably in the whole resin composition and can form a fibrous network, it is preferable to use in powder state.

The fluorinated polyolefin resin (D) of the present invention preferably has a polytetrafluoroethylene having a particle size of 0.05 to 1,000 µm and a specific gravity of 1.2 to 2.3 g / cm 3.

0.05-5 weight part is used for the fluorinated polyolefin resin (D) used for the flame-retardant polycarbonate resin composition which concerns on this invention.

The flame-retardant polycarbonate resin composition of the present invention, in addition to the above components, depending on the purpose of use, vinyl copolymers, flame retardants, flame retardant aids, lubricants, mold release agents, nucleating agents, antistatic agents, stabilizers, reinforcing materials, inorganic additives, pigments, dyes, etc. General additives may be included, and the added inorganic additive may be used in the range of 0 to 60 parts by weight, preferably 1 to 40 parts by weight, based on 100 parts by weight of the base resin component (A).

Preferred vinyl copolymers include rubber modified vinyl graft copolymers and / or styrene, such as acrylonitrile / butadiene / styrene (ABS) graft copolymers or methylmethacrylate / butadiene / styrene (MBS) graft copolymers. Vinyl-based copolymers such as acrylonitrile (SAN) copolymer, polymethylmethacrylate (PMMA), or styrene / maleic anhydride (SMA) copolymer.

Other flame retardants include phosphate ester flame retardants such as monomeric phosphate esters and / or oligomeric phosphate esters, metal salts of aromatic sulfonamides, metal salts of aromatic sulfonic acids and / or metal salts of metal salts of pafluoroalkanesulfonic acid. .

The resin composition of this invention can be manufactured by the well-known method of manufacturing a resin composition. For example, after mixing the components of the present invention and other additives simultaneously, they can be melt-extruded in an extruder and made into pellets.

The present invention will be further illustrated by the following examples, which are merely illustrative of the present invention and are not intended to limit or limit the scope of the present invention.

Example

The specifications of the polycarbonate resin (A), sulfonic acid metal salt (B), oligomeric compound (C) of cyclic phosphazene, and fluorinated polyolefin resin (D) used in the present invention are as follows.

(A) polycarbonate resin

A polycarbonate resin of bisphenol-A type having a weight average molecular weight (M _w ) of 20,000 was used.

(B) sulfonic acid metal salts

Diphenylsulfone potassium sulfonate (b ₁ ) or potassium salt of perfluorobutanesulfonic acid (b ₂ ) was used.

(C) Cyclic phosphazene oligomeric compound

Japan's Otsuka SPS-100 was used.

(D) fluorinated polyolefin resin

Teflon (trade name) 7AJ of Dupont, USA was used.

Examples 1 to 3

Using the above-mentioned components, the same resin compositions as shown in Examples 1 to 3 of Table 1 were prepared, and their physical properties are also shown in Table 1.

Each component, antioxidant, and heat stabilizer were added, mixed in a conventional mixer, extruded using a twin screw extruder having L / D = 35 and Φ = 45 mm, and then the extrudate was manufactured in pellet form, followed by injection temperature. Specimens for physical property measurement and flame retardancy evaluation at 300 ° C. were prepared using a 10 oz injection machine. These specimens were measured for 48 hours at 23 ° C. and 50% relative humidity, and then measured for physical properties according to ASTM standards.

Flame retardancy was evaluated using 1/16 inch thick specimens in accordance with UL-94 specification, and heat deflection temperature was measured at 18.6 kgf load according to ASTM D648.

Comparative Examples 1 to 4

The resin compositions of Comparative Examples 1 to 4 were prepared according to the composition of Table 1 below, and the specimens were prepared in pellet form in the same manner as in Examples 1 to 3 above. Physical property measurement results are shown in Table 1 together.

Example Comparative Example One 2 3 One 2 3 4 (A) polycarbonate resin 100 100 100 100 100 100 100 (B) sulfonic acid metal salt (b ₁ ) 0.1 - - 0.3 - - - (b ₂ ) - 0.1 0.2 - 0.3 - - (C) phosphazene compound 2 2 One - - 3 4 (D) Fluorinated polyolefin resin 0.5 0.5 0.5 0.5 0.5 0.5 0.5 UL 94 flame retardant (1/16 ″) V-0 V-0 V-0 V-1 V-1 V-1 V-0 Heat Deflection Temperature (HDT) 128 128 130 131 131 126 124 Izod impact strength (1/8 ″) 78 78 81 82 82 74 70

From the results of Table 1, when the sulfonic acid metal salt-based flame retardant of the present invention and a specific structure phosphazene compound are mixed and used as a flame retardant, they can exhibit excellent flame retardancy compared to the case where they are used alone, and the phosphazene compound alone In order to secure the flame retardancy of V-0 using a larger amount of flame retardant, in this case it can be seen that the heat resistance and impact strength is greatly reduced.

The present invention has the effect of providing a polycarbonate resin composition which does not include a halogen-based compound and is environmentally friendly and excellent in flame retardancy and excellent in impact resistance, heat resistance and mechanical strength.

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 (9)

(A) 100 parts by weight of thermoplastic polycarbonate resin; (B) 0.01 to 10 parts by weight of a metal salt of an aromatic sulfur compound or a metal salt of perfluoroalkanesulfonic acid; (C) 0.1 to 20 parts by weight of a mixture of a cyclic phosphazene oligomeric compound consisting of a cyclic phosphazene compound having a structure represented by Formula 1 connected with a linking group having a -R ₂ -group; And [Formula 1] Wherein R ₁ represents a substituent optionally selected from alkyl, aryl, alkyl substituted aryl, aralkyl, alkoxy, aryloxy, amino or hydroxy groups, k and m being 0 or an integer from 1 to 10 The alkoxy group or aryloxy group may be substituted with an alkyl group, an aryl group, an amino group, or a hydroxy group, and R ₂ is C ₆ -C ₃₀ dioxyaryl or alkyl substituted C ₆ -C ₃₀ dioxyaryl group derivative. , n is the number average degree of polymerization, the average value of n is 0.3 to 3) (D) 0.05 to 5 parts by weight of a fluorinated polyolefin resin having an average particle size of 0.05 to 1000 µm and a density of 1.2 to 2.3 g / cm 3; Flame retardant polycarbonate resin composition, characterized in that consisting of. The flame retardant polycarbonate according to claim 1, wherein the metal salt (B) of the aromatic sulfur compound is a metal salt of an aromatic sulfonamide having a structure of Formula 3 or 4 or a metal salt of an aromatic sulfonic acid having a structure of Formula 5. Resin composition. [Formula 3] (Wherein Ar represents a phenyl group or an alkyl-substituted phenyl group and M represents a metal cation) [Formula 4] (Wherein Ar represents a phenyl group or an alkyl-substituted phenyl group, R ₃ represents an organic group which may contain a sulfonyl group or a carbonyl group, or Ar may bond with R _3, and M represents a metal cation) [Formula 5] (Wherein R ₄ and R ₅ are the same or independently of each other, a C ₁ -C ₆ aliphatic group, a phenyl group, a biphenyl group or an alkyl substituted phenyl group, x is an integer from 0 to 6, y is a value of 1 to 6 Is an integer having M represents a metal cationic group) The flame retardant polycarbonate resin composition according to claim 1, wherein the metal salt of perfluoroalkanesulfonic acid (B) has a structure represented by the following formula (6). [Formula 6] (Wherein M is a metal cation and l represents an integer of 1 to 8) The metal salt of aromatic sulfonamide is a metal salt of saccharin, a metal salt of N- (p-tolylsulfonyl) -p-toluenesulfoamide, N- (N'-benzylaminocarbonyl) sulfanimide And a metal salt of N- (phenylcarboxyl) -sulfanimide, wherein the metal salt of the aromatic sulfonic acid is a metal salt of diphenylsulfone-3-sulfonic acid, diphenylsulfone-3,3'-disulfonic acid Flame retardant polycarbonate resin composition, characterized in that it is selected from the group consisting of a metal salt of, and a metal salt of diphenyl sulfone-3,4'- disulfonic acid. The metal salt of perfluoroalkanesulfonic acid (B) is a metal salt of perfluoromethanesulfonic acid, a metal salt of perfluoroethanesulfonic acid salt, a metal salt of perfluoropropanesulfonic acid, a metal salt of perfluorobutanesulfonic acid, A flame retardant polycarbonate resin composition selected from the group consisting of metal salts of perfluoropentanesulfonic acid, metal salts of perfluorohexanesulfonic acid, metal salts of perfluoroheptansulfonic acid, and metal salts of perfluorooctane sulfonic acid. The flame retardant polycarbonate resin composition according to claim 1, wherein the oligomeric compound (C) of the cyclic phosphazene is linear or has a side chain. The flame retardant polycarbonate resin composition according to claim 1, wherein the R ₁ group in the structure of the formula (1) of the cyclic phosphazene oligomeric compound (C) is a phenoxy group. The group according to claim 1, wherein in the structure of Formula 1 of the cyclic phosphazene oligomeric compound (C), the R ₂ group is composed of catechol, resorcinol, hydroquinone, and bisphenylenediol having the structure of Formula 7. Flame retardant polycarbonate resin composition, characterized in that derived from a material selected from. [Formula 7] Wherein Y represents C ₁ -C ₅ alkylene, C ₁ -C ₅ alkylidene, C ₅ -C ₆ cycloalkylidene, -S- or -SO _2- , z is 0 or 1 being) A molded article prepared from the flame retardant polycarbonate resin composition of claim 1.