JPH11263903A - Fire retardant polycarbonate resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire retardant polycarbonate resin composition excellent in fire retardance and thermal stability and having high impact strength. SOLUTION: This fire retardant polycarbonate resin composition comprises (A) 100 pts.wt. of an aromatic polycarbonate resin, (B) 0.1-15 pts.wt. of silicone vanish having viscosity of <=300 centi stokes at 25 deg.C and (C) 0.01-5 pts.wt. of an organic metal sulfonate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a polycarbonate resin composition, and more particularly, to a flame-retardant polycarbonate resin composition.

[0002]

2. Description of the Related Art Polycarbonate resins have excellent mechanical properties, and are widely used industrially in the fields of automobiles, office automation equipment, electric and electronic fields. On the other hand, O
There is a strong demand for synthetic resin materials to be flame-retardant, mainly for applications such as A equipment and home appliances, and a large number of flame retardants have been developed and studied to meet these demands. Usually, halogen compounds and the like are mainly used for making the polycarbonate resin flame-retardant. Furthermore, in recent years, due to problems such as environmental pollution,
For the purpose of reducing the amount of a halogen compound, for example, a composition using a phosphate compound or a phenol stabilizer is known. However, such a polycarbonate resin composition has a disadvantage that impact resistance and thermal stability are reduced.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a polycarbonate resin composition which is excellent in flame retardancy and thermal stability and has a small decrease in heat resistance.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist of the invention is that 100 parts by weight of an aromatic polycarbonate resin has a viscosity of 25 ° C.
In a flame-retardant polycarbonate resin composition comprising 0.1 to 15 parts by weight of a silicone varnish of not more than 300 centistokes and 0.01 to 5 parts by weight of a metal salt of an organic sulfonic acid.

Hereinafter, the present invention will be described in detail. As the aromatic polycarbonate resin in the present invention, an aromatic hydroxy compound or a small amount of a polyhydroxy compound and an optionally branched thermoplastic aromatic polycarbonate polymer or a copolymer prepared by reacting a small amount of the polyhydroxy compound with phosgene or a carbonic acid diester are used. It is a polymer.

As aromatic dihydroxy compounds, 2,
2-bis (4-hydroxyphenyl) propane (= bisphenol A), tetramethylbisphenol A, bis (4-hydroxyphenyl) -P-diisopropylbenzene, hydroquinone, resorcinol, 4,4-dihydroxydiphenyl, and the like, Preferably, bisphenol A is used. Further, for the purpose of further increasing the flame retardancy, a compound in which one or more tetraalkylphosphonium sulfonates are bonded to the above-mentioned aromatic dihydroxy compound can be used.

To obtain a branched aromatic polycarbonate resin, phloroglucin, 4,6-dimethyl-2,4,4
6-tri (4-hydroxyphenyl) heptene-2,
4,6-dimethyl-2,4,6-tri (4-hydroxyphenyl) heptane, 2,6-dimethyl-2,4,6-
Tri (4-hydroxyphenylheptene-3,1,3,
5-tri (4-hydroxyphenyl) benzene, 1,
Polyhydroxy compounds represented by 1,1-tri (4-hydroxyphenyl) ethane or the like, 3,3-bis (4-hydroxyaryl) oxindole (= isatin bisphenol), 5-chlorisatin, 5,7-
Dichlorisatin, 5-bromoisatin and the like may be used as a part of the aromatic dihydroxy compound, and the amount is 0.01 to 10 mol%, preferably 0.1 to 10 mol%.
~ 2 mol%.

In order to control the molecular weight, a monovalent aromatic hydroxy compound may be used, and m- and p-methylphenol, m- and p-propylphenol, p-tert-
Butylphenol and p-long-chain alkyl-substituted phenols. The aromatic polycarbonate resin is preferably a polycarbonate resin derived from 2,2-bis (4-hydroxyphenyl) propane, or a resin derived from 2,2-bis (4-hydroxyphenyl) propane and another aromatic dihydroxy compound. Polycarbonate copolymer to be used. Further, a polymer or oligomer having a siloxane structure can be copolymerized for the purpose of enhancing flame retardancy. As the aromatic polycarbonate resin, a mixture of two or more resins may be used.

The molecular weight of the aromatic polycarbonate resin is as follows:
Methylene chloride was used as a solvent, and the viscosity average molecular weight was 1 based on the solution viscosity measured at a temperature of 25 ° C.
6,000 to 30,000, preferably 18.0
00 to 26,000.

The silicone varnish of the present invention is mainly composed of a bifunctional unit [R ₂ SiO] and a trifunctional unit [RSiO _1.5 ], and a monofunctional unit [R ₃ SiO].
_0.5 ] and / or a solution silicone resin having a relatively low molecular weight that can contain tetrafunctional units [SiO ₂ ]. Here, R is a hydrocarbon group having 1 to 12 carbon atoms or a hydrocarbon group having 1 to 12 carbon atoms substituted with one or more substituents, and the substituents include epoxy group, amino group, hydroxyl group and vinyl group. And the like. It is possible to improve the compatibility with the matrix resin by changing the structure of R. Examples of the silicone varnish include a solvent-free silicone varnish and a silicone varnish containing a solvent, and a silicone varnish containing no solvent is preferable.

[0011] The silicone varnish can be produced by hydrolyzing an alkylalkoxysilane, for example, by hydrolyzing an alkyltrialkoxysilane, a dialkyldialkoxysilane, a trialkylalkoxysilane, or a tetraalkoxysilane. Can be manufactured. By adjusting the molar ratio of these raw materials, hydrolysis rate, etc., the molecular structure (degree of crosslinking)
And the molecular weight can be controlled. Furthermore, although alkoxysilane remains depending on the production conditions, if it remains in the composition, the hydrolysis resistance of the polycarbonate resin may decrease, and it is desirable that the residual alkoxysilane be small or not.

[0012] The viscosity of the silicone varnish is not more than 300 centistokes. If it exceeds 300 centistokes, the flame retardancy becomes insufficient. The viscosity of the silicone varnish is preferably no greater than 250 centistokes, and more preferably no greater than 200 centistokes.

The amount of the silicone varnish is 0.1 to 15 parts by weight based on 100 parts by weight of the polycarbonate resin. If the amount of the silicone varnish is less than 0.1 part by weight, the flame retardancy is insufficient, and if it exceeds 15 parts by weight, the heat resistance is reduced. The amount of silicone varnish is
It is preferably 0.5 to 12 parts by weight, more preferably 1 to 10 parts by weight, based on 100 parts by weight of the polycarbonate resin.
Parts by weight.

The metal salt of an organic sulfonic acid in the present invention includes a metal salt of an aliphatic sulfonic acid and a metal salt of an aromatic sulfonic acid. As the metal of the organic sulfonic acid metal salt, preferably, an alkali metal, an alkaline earth metal, and the like, and as the alkali metal and the alkaline earth metal, sodium, lithium, potassium, rubidium,
Cesium, beryllium, magnesium, calcium, strontium, barium and the like. Two or more organic sulfonic acid metal salts can be used in combination.

As the metal salt of an organic sulfonic acid, preferably, a metal salt of perfluoroalkane-sulfonic acid, a metal salt of aromatic sulfonesulfonic acid and the like are used, and more preferably, a metal salt of perfluoroalkane-sulfonic acid and the like are used. Can be As the perfluoroalkane-sulfonic acid metal salt, preferably, perfluoroalkane-sulfonic acid alkali metal salt, perfluoroalkane-sulfonic acid alkaline earth metal salt and the like, more preferably,
Examples thereof include alkali metal sulfonic acid salts having a perfluoroalkane group having 4 to 8 carbon atoms, and alkaline earth metal sulfonic acid salts having a perfluoroalkane group having 4 to 8 carbon atoms.

Specific examples of perfluoroalkane-sulfonic acid metal salts include sodium perfluorobutane-sulfonic acid, potassium perfluorobutane-sulfonic acid,
Sodium perfluoromethylbutane-sulfonate, potassium perfluoromethylbutane-sulfonate, sodium perfluorooctane-sulfonate, potassium perfluorooctane-sulfonate, perfluorobutane-
And sulfonic acid tetraethylammonium salt.

Preferred examples of the aromatic sulfonesulfonic acid metal salt include alkali metal aromatic sulfonesulfonic acid and alkaline earth metal aromatic sulfonesulfonic acid, and the like. The alkaline earth metal sulfonate sulfonate may be a polymer.

Specific examples of the aromatic sulfonesulfonic acid metal salt include sodium salt of diphenylsulfon-3-sulfonic acid, potassium salt of diphenylsulfon-3-sulfonic acid, and 4,4′-dibromodiphenyl-sulfon-3.
Sodium salt of sulfone, potassium salt of 4,4′-dibromodiphenyl-sulfone-3-sulfone, calcium salt of 4-chloro-4′-nitrodiphenylsulfon-3-sulfonic acid, diphenylsulfone-3,3′-disulfone Disodium salt of acid, diphenyl sulfone-3
And dipotassium salt of 3'-disulfonic acid.

The amount of the organic sulfonic acid metal salt is 0.01 to 100 parts by weight of the aromatic polycarbonate resin.
5 parts by weight. When the amount of the organic sulfonic acid metal salt is 0.
If it is less than 01 parts by weight, it is difficult to obtain sufficient flame retardancy,
If it exceeds 5 parts by weight, the thermal stability tends to decrease. The amount of the organic sulfonic acid metal salt is preferably 0.02 to 4 parts by weight, more preferably 0.05 to 3 parts by weight.

The phosphorus-based flame retardant in the present invention is a compound having a phosphorus atom in the molecule and having the effect of increasing the flame retardancy of the resin, and is preferably represented by the following general formula (1) or (2). Non-halogen phosphorus compounds represented by the following formulas are exemplified.

[0021]

Embedded image

(Wherein, R ¹ , R ² and R ³ each represent an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 20 carbon atoms which may be substituted with an alkyl group;
h, i and j each represent 0 or 1. )

[0023]

Embedded image

(Wherein, R ⁴ , R ⁵ , R ⁶ and R ⁷ each represent an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 20 carbon atoms which may be substituted by an alkyl group. , P, q, r and s are each 0 or 1, m is an integer of 1 to 5, and X represents an arylene group.

Examples of the non-halogen phosphorus compound represented by the general formula (1) include triphenyl phosphate, tricresyl phosphate, diphenyl 2-ethylcrisyl phosphate, tri (isopropylphenyl) phosphate, diphenyl methylphosphonate, and diethyl phenylphosphonate. , Diphenylcresyl phosphate, tributyl phosphate and the like. The non-halogen phosphorus compound represented by the general formula (1) can be produced from phosphorus oxychloride or the like by a known method.

As the non-halogen phosphorus compound represented by the general formula (2), m is a condensed phosphate ester having 1 to 5 and m may be a single condensed phosphate ester, or m is a condensed phosphate ester. It may be a mixture of different condensed phosphate esters. In the case of a mixture, the average value of m of the mixture is 1 to 5
Should be fine. X represents an arylene group, for example, a group derived from a dihydroxy compound such as resorcinol, hydroquinone, and bisphenol A. General formula (2)
When the dihydroxy compound is resorcinol, phenylresorcinol
Polyphosphate, cresyl resorcinol polyphosphate, phenyl cresyl resorcinol polyphosphate, xylyl resorcinol polyphosphate, phenyl-Pt-butylphenyl resorcinol polyphosphate, phenyl isopropylphenyl resorcinol polyphosphate, cresyl xylyl・ Resorcinol ・
Polyphosphate phenyl, isopropylphenyl, diisopropylphenyl, resorcinol polyphosphate and the like can be mentioned.

The compounding amount of the phosphorus-based flame retardant is 0.5 to 20 parts by weight based on 100 parts by weight of the aromatic polycarbonate resin. If the amount of the phosphorus-based flame retardant is less than 0.5 part by weight, the flame retardancy is insufficient, and if it exceeds 20 parts by weight, the mechanical properties tend to deteriorate. The amount of the phosphorus-based flame retardant is preferably 0.8 to 15 parts by weight, more preferably 1 to 10 parts by weight, based on 100 parts by weight of the aromatic polycarbonate resin.
Parts by weight.

Examples of the multilayer polymer having an inner layer made of a crosslinked rubbery polymer and an outermost layer made of an alkyl (meth) acrylate-based polymer include, for example, a polymer obtained in the first stage and a polymer obtained in the second stage. A polymer produced by a continuous multi-stage seed polymerization such that the polymer coats sequentially,
The basic polymer structure is an outermost layer composed of an alkyl (meth) acrylate polymer compound that improves the adhesion between the inner layer, which is a crosslinked rubbery polymer component having a low glass transition temperature, and the matrix of the composition. It is a multilayer polymer having a shell layer.

As a multilayer polymer having an inner layer made of a crosslinked rubbery polymer and an outermost shell made of an alkyl (meth) acrylate polymer, for example, the innermost core layer is made of an aromatic vinyl monomer. The intermediate layer is formed of a rubbery polymer having a low glass transition temperature, and the outermost layer is formed of a multi-layered polymer composed of an alkyl (meth) acrylate polymer. This has the effect of improving poor appearance.

The compounding amount of the multilayer polymer having the inner layer made of the crosslinked rubbery polymer and the outermost shell layer made of the alkyl (meth) acrylate polymer is 0 to 100 parts by weight of the aromatic polycarbonate resin. 0.5 to 30 parts by weight. If the amount is less than 0.5 part by weight, impact strength tends to decrease, and if it exceeds 30 parts by weight, heat resistance tends to decrease. The compounding amount of the multilayer polymer having the inner layer made of the crosslinked rubbery polymer and the outermost shell layer made of the alkyl (meth) acrylate polymer is preferably 1 to 100 parts by weight of the aromatic polycarbonate resin. It is 25 parts by weight, more preferably 1.5 to 20 parts by weight.

The polyfluoroethylene in the present invention includes, for example, polytetrafluoroethylene having a fibril-forming ability, which is easily dispersed in a polymer.
In addition, it shows a tendency to combine the polymers to form a fibrous structure. Polytetrafluoroethylene having fibril-forming ability is classified into Type 3 according to ASTM standards.
Examples of polytetrafluoroethylene having fibril-forming ability include Mitsui-DuPont Fluorochemical Co., Ltd.
Commercially available as Teflon 6J or Teflon 30J, or as polyflon from Daikin Chemical Industries, Ltd.

The blending amount of polyfluoroethylene is (a)
0.1 parts by weight based on 100 parts by weight of the aromatic polycarbonate resin.
It is 01 to 5 parts by weight. Polyfluoroethylene is 0.0
If the amount is less than 1 part by weight, the flame retardancy is insufficient, and if it exceeds 5 parts by weight, the appearance tends to deteriorate. The compounding amount of polyfluoroethylene is preferably 0.02 to 4 parts by weight, more preferably 0.03 to 3 parts by weight, based on 100 parts by weight of the aromatic polycarbonate resin.

The flame-retardant polycarbonate resin composition of the present invention may contain, if necessary, stabilizers such as ultraviolet absorbers and antioxidants, pigments, dyes, lubricants, other flame retardants, release agents, and slidability. Additives such as improver, glass fiber, glass flake,
A reinforcing material such as carbon fiber or a whisker such as potassium titanate or aluminum borate, or a resin other than an aromatic polycarbonate resin can be added and blended.

Examples of the resin other than the flame-retardant polycarbonate resin include polyester resins such as polybutylene terephthalate and polyethylene terephthalate, polyamide resins, styrene resins such as HIPS resins and ABS resins, and thermoplastic resins such as polyolefin resins. ,
The compounding amount of the resin other than the aromatic polycarbonate resin is preferably 40% by weight or less of the total amount of the resin other than the aromatic polycarbonate resin and the aromatic polycarbonate resin,
It is more preferably at most 30% by weight. The flame-retardant polycarbonate resin composition of the present invention is preferably a non-halogen polycarbonate resin composition, and each component to be blended in the resin composition of the present invention is a non-halogen compound. It is preferable from the viewpoints of contamination, corrosion of a molding machine and a mold, and the like.

The method for producing the flame-retardant polycarbonate resin composition of the present invention is not particularly limited. For example, an aromatic polycarbonate resin, a silicone varnish and a metal sulfonic acid salt, and if necessary, a phosphorus-based flame retardant, A method of collectively kneading a multilayered polymer having an inner layer made of a rubber-like polymer and an outermost shell layer made of an alkyl (meth) acrylate polymer and / or a polyfluoroethylene resin, an aromatic polycarbonate resin, A silicone varnish and a metal sulfonic acid salt, and if necessary, a phosphorus-based flame retardant and / or a polyfluoroethylene resin are kneaded in advance, and then an inner layer of a crosslinked rubber-like polymer and an alkyl (meth) acrylate-based polymer A method of blending a multi-layered polymer having an outermost shell layer and melting and kneading it It is below.

[0036]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof. In the examples and comparative examples, the following raw materials were used. (1) Polycarbonate resin: poly-4,4-isopropylidene diphenyl carbonate, Iupilone S-30
00, manufactured by Mitsubishi Engineering-Plastics Corporation
Viscosity average molecular weight 21,000. (Hereinafter, it may be referred to as “PC”.) (2) Silicone varnish-1: KR-219, Shin-Etsu Chemical Co., Ltd., viscosity at 25 ° C. of 16.4 centistokes. (3) Silicone varnish-2: X-40-9228, Shin-Etsu Chemical Co., Ltd., viscosity at 25 ° C of 21.3 centistokes. (4) Silicone varnish-3: X-40-9229-1
2. Shin-Etsu Chemical Co., Ltd., viscosity at 25 ° C. 366 centistokes.

(5) Metal salt of organic sulfonic acid-1: potassium perfluorobutanesulfonic acid, F-114, manufactured by Dainippon Ink and Chemicals, Inc. (6) Organic sulfonic acid metal salt-2: potassium diphenylsulfonate, KSS, manufactured by UCB Japan. (7) Phosphorus-based flame retardant-1: Condensed phosphate ester FP-50
0, manufactured by Asahi Denka Kogyo Co., Ltd. (8) Polytetrafluoroethylene: polyflon F-2
01L, manufactured by Daikin Corporation. (Hereinafter, it may be referred to as “PTFE”.) (9) Multilayer structure polymer-1: Multilayer structure polymer composed of a core formed of polybutadiene and a shell formed of polymethyl methacrylate, EXL-2603, Kureha Chemical Co., Ltd.

The physical properties of the test pieces were evaluated as follows.
I went to. (10) Flammability: 2.0mm thick UL specimen
A more vertical combustion test was performed and evaluated. Total burn time is 5 pieces
Total combustion time after 10 combustion, maximum combustion time is 10
The maximum combustion time in the combustion of cotton, cotton ignition is the ignition of cotton by dripping
The number is expressed as a fraction, and the numerator represents the number of ignitions. Evaluation results
In the above, "V2NG" indicates that V2 is not passed. (11) Impact strength: 3.2 mm Izod impact test piece
And then cut the 0.25R notch to evaluate
Was. (12) Load deflection temperature: Use a bending test piece of 6.4 mm
And 18.5Kg / cm ^TwoMeasures load deflection temperature under load
did.

Example 1 100 parts by weight of an aromatic polycarbonate resin, 3.1 parts by weight of silicone resin-1,
After mixing 0.21 part by weight of the organic sulfonic acid metal salt-1 and mixing by a tumbler for 20 minutes, the mixture was pelletized at a cylinder temperature of 270 ° C. by a 30 mm twin-screw extruder, and by an injection molding machine,
A 1.6 mm thick combustion test piece was molded and evaluated for flammability. Furthermore, Izod impact test pieces and bending test pieces were formed at a cylinder temperature of 270 ° C., and various evaluations were made. Table 1 shows the evaluation results.

Example 2 Pellets were prepared in the same manner as in Example 1, except that the amount of silicone resin-1 was changed from 3.1 parts by weight to 5.3 parts by weight.
Evaluation was performed similarly. The results are shown in Table 1. Example 3 Pelletization was performed in the same manner as in Example 1 except that silicone resin-1 was changed to silicone resin-2, and evaluation was performed in the same manner. Table-Results
It is shown in FIG. [Example 4] A method similar to that of Example 1, except that instead of using 0.21 parts by weight of the metal salt of organic sulfonic acid-1, 0.52 parts by weight of the metal salt of organic sulfonic acid-3 was used. , And similarly evaluated. The results are shown in Table 1.

Comparative Example 1 Pellets were prepared in the same manner as in Example 1 except that the silicone resin-1 and the organic metal salt of organic sulfonic acid-1 were not used, and evaluation was performed in the same manner. The results are shown in Table 1. [Comparative Example 2] A pellet was formed in the same manner as in Example 1 except that the metal salt of organic sulfonic acid-1 was not used, and evaluation was performed in the same manner. The results are shown in Table 1. Comparative Example 3 A pellet was formed in the same manner as in Example 2 except that the metal salt of organic sulfonic acid-1 was not used, and evaluation was performed in the same manner. The results are shown in Table 1. [Comparative Example 4] Pellets were formed in the same manner as in Example 3 except that the metal salt of organic sulfonic acid-1 was not used, and evaluation was performed in the same manner. The results are shown in Table 1. [Comparative Example 5] Pelletization was performed in the same manner as in Example 1, except that the metal salt of organic sulfonic acid-1 was changed to metal salt of organic sulfonic acid-3, and evaluation was performed in the same manner. The results are shown in Table 1.

[0042]

[Table 1]

Example 5 100 parts by weight of an aromatic polycarbonate resin, 1.1 parts by weight of silicone resin-1,
0.23 parts by weight of metal salt of organic sulfonic acid-1, 5.6 parts by weight of multi-layered polymer-1 and 5.6 of phosphorus-based flame retardant-1
Parts by weight, and 0.34 parts by weight of polytetrafluoroethylene were mixed and mixed in a tumbler for 20 minutes, then pelletized at a cylinder temperature of 270 ° C. by a 30 mm twin screw extruder, and burned to a thickness of 1.6 mm by an injection molding machine. Test specimens were molded and the flammability was evaluated. Furthermore, at a cylinder temperature of 270 ° C,
Izod impact test pieces and bending test pieces were formed and various evaluations were made. Table 2 shows the evaluation results. Comparative Example 6 The same procedure as in Example 5 was repeated except that the silicone resin-1 was not used and the compounding amount of the organic metal sulfonate-1 was 0.2.
Except that the amount was changed to 2 parts by weight, pelletization was performed in the same manner as in Example 5, and evaluation was performed in the same manner. Table 2 shows the results.

[0044]

[Table 2]

[0045]

Industrial Applicability The flame-retardant polycarbonate resin composition of the present invention is excellent in flame retardancy, thermal stability, and impact strength, and significantly reduces the problem of corrosiveness of molds and screws during molding. It is useful as a large-sized molded product or a thin-walled molded product in various applications, particularly in the field of electric and electronic equipment and precision machinery.

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Claims (7)

[Claims] 1. To 100 parts by weight of an aromatic polycarbonate resin, 0.1 to 15 parts by weight of a silicone varnish having a viscosity of 300 centistokes or less at 25 ° C. and 0.01 to 5 parts by weight of a metal salt of an organic sulfonic acid are blended. A flame-retardant polycarbonate resin composition comprising: 2. The flame-retardant polycarbonate resin composition according to claim 1, wherein the aromatic polycarbonate resin has a viscosity average molecular weight of 16,000 to 30,000. 3. The metal salt of an organic sulfonic acid is a metal salt of a perfluoroalkane-sulfonic acid or a metal salt of an aromatic sulfone sulfonic acid.
3. The flame-retardant polycarbonate resin composition according to item 1. 4. The flame-retardant polycarbonate resin composition according to claim 3, wherein the metal organic sulfonic acid salt is a metal salt of perfluoroalkane-sulfonic acid. 5. The flame-retardant polycarbonate according to claim 1, wherein 0.5 to 20 parts by weight of a phosphorus-based flame retardant is blended with 100 parts by weight of the aromatic polycarbonate resin. Resin composition. 6. A multi-layered polymer having an inner layer made of a crosslinked rubbery polymer and an outermost layer made of an alkyl (meth) acrylate-based polymer in 100 to 100 parts by weight of an aromatic polycarbonate resin. The flame-retardant polycarbonate resin composition according to any one of claims 1 to 5, wherein the composition comprises parts by weight. 7. The flame-retardant polycarbonate resin according to claim 1, wherein 0.01 to 5 parts by weight of polyfluoroethylene is blended with 100 parts by weight of the aromatic polycarbonate resin. Composition.