Glass fiber-containing flame-retardant polycarbonate resin composition and molded article

Abstract

Provided are: a glass-fiber-containing flame-retardant polycarbonate resin composition which has excellent flame retardancy and excellent rigidity with minimal use of a fluororesin and which is halogen-free; and a molded object comprising the glass-fiber-containing flame-retardant polycarbonate resin composition.　The glass-fiber-containing flame-retardant polycarbonate resin composition comprises (A) a polycarbonate resin, (B) glass fibers, and (C) a phosphoric-ester flame retardant. The composition contains the components (A), (B), and (C) in amounts of 40-80 parts by mass, 5-50 parts by mass, and 5-30 parts by mass, respectively, per 100 parts by mass of the sum of the components (A)-(C).

Description

[Technical Field]

[0001] The present invention relates to a flame-retardant polycarbonate resin composition containing glass fibers (a glass-fiber-containing flame-retardant polycarbonate resin composition, hereinafter also referred to simply as a "resin composition"), and to a molded article obtained by molding this resin composition. [Background technology]

[0002] Polycarbonate resin has excellent mechanical and thermal properties and is widely used industrially, including in the automotive, office equipment, and electrical / electronics industries. Its distinctive features include polarity due to its molecular structure, strong intermolecular forces, and the fact that it is an amorphous, transparent resin. Furthermore, polycarbonate resin has a wide elastic range and high Izod impact strength, making it an excellent engineering plastic for a variety of applications. In particular, its high transparency has led to its widespread use as a glass replacement and in optical applications such as optical discs.

[0003] On the other hand, there is a strong demand for flame-retardant synthetic resin materials used in applications such as office automation equipment and home appliances, and many flame retardants have been developed and are being investigated to meet this demand.

[0004] In recent years, the thickness of resin parts has been reduced in line with the trend toward smaller and lighter products, which has led to a demand for higher rigidity. Furthermore, since the flame retardancy of resin parts generally tends to decrease as the thickness of the resin parts decreases, development of resin compositions with better flame retardancy has been underway.

[0005] Traditionally, halogen-based flame retardants have been primarily used to make polycarbonate resin flame-retardant. While halogen-based flame retardants have excellent flame-retardant properties, they have problems such as thermal decomposition during resin molding to generate hydrogen halide, which can corrode molds and discolor the resin. Furthermore, when burned in a fire or other such event, they emit a large amount of smoke along with corrosive hydrogen halide gas, which is harmful to humans. Furthermore, halogen-based flame retardants are often used in combination with antimony trioxide or other flame-retardant aids, which raises concerns about health problems for workers who handle them and impairs the excellent mechanical properties and transparency inherent to polycarbonate resin.

[0006] To address these problems, studies have been conducted to make flame-retardant materials halogen-free, and one method that has been proposed is to make polycarbonate resin flame-retardant using a phosphate ester-based flame retardant. For example, Patent Documents 1 and 2 each propose flame-retardant polycarbonate resin compositions containing a phosphate ester-based flame retardant and an inorganic filler, and describe examples of compositions that are excellent in flame retardancy and mechanical properties such as rigidity.

[0007] In the present invention, "halogen-free" and similar terms mean that the resin composition contains 900 ppm or less of chlorine, 900 ppm or less of bromine, and 1500 ppm or less of the total of chlorine and bromine, in accordance with the IEC (International Electrotechnical Commission) international standard IEC 61249-2-21. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-052065 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-163315 Summary of the Invention [Problem to be solved by the invention]

[0009] However, although the technology described in Patent Document 1 achieved a V-0 rank in the UL-94V flame retardancy test (1.6 mm thick) in some cases, a flame retardant aid containing polytetrafluoroethylene (PTFE) was added to the composition. Also, the technology described in Patent Document 2 achieved a V-0 rank in the UL-94V flame retardancy test (1.2 mm thick) in some cases, but PTFE was included in the resin composition.

[0010] Fluorine-containing resins, such as PTFE, are known as flame retardant auxiliaries (anti-drip agents) with excellent drip prevention properties. However, they reduce the melt fluidity of resins during molding, which can lead to molding defects, especially in thin injection molding. Furthermore, although fluorine is not a halogen-free element under the IEC standard, it is generally classified as a halogen element. For these reasons, there has been a strong demand in the market for flame-retardant resin compositions that are not only halogen-free as defined by the IEC standard, but also do not contain fluorine-containing resins.

[0011] Therefore, an object of the present invention is to provide a halogen-free, glass fiber-containing, flame-retardant polycarbonate resin composition having excellent flame retardancy and excellent rigidity while using as little fluorine-containing resin as possible, and a molded article thereof. [Means for solving the problem]

[0012] The present inventors have conducted extensive research to solve the above problems and have completed the present invention.

[0013] That is, the glass fiber-containing flame-retardant polycarbonate resin composition of the present invention is a glass fiber-containing flame-retardant polycarbonate resin composition containing (A) a polycarbonate resin, (B) glass fibers, and (C) a phosphate ester-based flame retardant, The (C) phosphate ester flame retardant is a compound having a structure represented by the following general formula (2): The composition contains 40 to 80 parts by mass of the component (A), 5 to 50 parts by mass of the component (B), and 12 to 20 parts by mass of the component (C) relative to a total of 100 parts by mass of the components (A), (B), and (C), The glass fiber-containing flame-retardant polycarbonate resin composition is characterized in that it contains 0.15 parts by mass or less of a fluorine-containing resin relative to 100 parts by mass of the glass fiber-containing flame-retardant polycarbonate resin composition. TIFF0007744898000001.tif41150In the above formula (2), R 3 and R 4 each independently represents a hydrogen atom or a methyl group, and n2 represents an integer of 1 to 7.

[0015] In the resin composition of the present invention, the content of the (B) glass fiber is preferably 10 to 40 parts by mass per 100 parts by mass of the total of the (A) to (C) components. Furthermore, the resin composition of the present invention preferably does not contain the fluorine-containing resin, and more preferably does not contain polytetrafluoroethylene (PTFE).

[0016] Furthermore, in the resin composition of the present invention, it is preferable that the (B) glass fiber is a chopped strand formed by bundling single fibers, and the cut length of the chopped strand is 1.0 mm to 5.0 mm. Furthermore, the resin composition of the present invention can be in the form of pellets.

[0017] The molded article of the present invention is characterized by being obtained from the above-mentioned glass fiber-containing flame-retardant polycarbonate resin composition.The molded article of the present invention preferably has a thickness of 0.1 mm to 1.0 mm. [Effects of the Invention]

[0018] According to the present invention, it is possible to provide a glass fiber-containing flame-retardant polycarbonate resin composition having excellent flame retardancy and rigidity, and a molded article thereof. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of the present invention will be described in detail.

[0020] <Glass fiber-containing flame-retardant polycarbonate resin composition> The glass fiber-containing flame-retardant polycarbonate resin composition of the present invention contains (A) a polycarbonate resin, (B) glass fiber, and (C) a phosphate ester-based flame retardant, and is characterized by containing 40 to 80 parts by mass of component (A), 5 to 50 parts by mass of component (B), and 5 to 30 parts by mass of component (C) relative to a total of 100 parts by mass of components (A), (B), and (C).

[0021] ((A) Polycarbonate resin) The (A) polycarbonate resin used in the present invention is a polymer having a carbonate bond, and can be obtained, for example, from a monocyclic or polycyclic aromatic compound containing two or more hydroxyl groups, each of which is directly bonded to a carbon atom of an aromatic ring (hereinafter referred to as a "polyhydroxy aromatic compound") and a carbonate precursor. The (A) polycarbonate resin is not particularly limited in terms of its structure, production method, chain terminator, molecular weight, etc., and may be branched. It may also be used as a mixture of one or more types, and may further contain known polymer components, such as polyesters, that are used in combination with polycarbonates.

[0022] The (A) polycarbonate resin is generally obtained from a divalent hydroxy aromatic compound and a carbonate precursor, and a compound having a structure represented by the following general formula (5) is preferred.

[0023] TIFF0007744898000002.tif17158In the above formula (5), A represents a residue of a dihydroxy aromatic compound used in the polymerization reaction, which is represented by the following general formula (6) or (7), and p represents a number of 2 or more.

[0024] TIFF0007744898000003.tif24158In the above formulas (6) and (7), * represents a bond to the adjacent oxygen atom, and R11 , R 12 and R 13 each independently represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a cycloalkyl group, an aryl group, an alkylaryl group, or an arylalkyl group; q1, q2, and q3 each independently represent an integer of 0 to 4; and X represents an alkylene group, a cycloalkylidene group, a direct bond, a sulfide bond, a disulfide bond, an ether bond, a sulfinyl group, a sulfonyl group, or a carbonyl group.

[0025] Above R 11 , R 12 and R 13 Examples of the halogen atom represented by the formula (I) include fluorine, chlorine, bromine, and iodine; examples of the alkyl group include methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, isobutyl, amyl, isoamyl, tert-amyl, hexyl, cyclohexyl, heptyl, isoheptyl, tert-heptyl, n-octyl, isooctyl, tert-octyl, and 2-ethylhexyl; examples of the alkoxy group include groups derived from the above alkyl groups; examples of the cycloalkyl group include cyclobutyl, cyclopentyl, and cyclohexyl groups, and substitution products thereof; examples of the aryl group and the alkylaryl group include phenyl, methylphenyl, dimethylphenyl, ethylphenyl, octylphenyl, nonylphenyl, bromophenyl, and naphthyl; and examples of the arylalkyl group include benzyl and phenethyl groups.

[0026] Examples of the alkylene group represented by X include a methylene group, an ethylene group, an ethane-1,1-diyl group, a propylene group, a propane-2,2-diyl group, a 1-methylethylene group, a butylene group, a 1-methylpropylene group, a 2-methylpropylene group, a 2,2-dimethylpropylene group, a 1,3-dimethylpropylene group, a 1-methylbutylene group, a 2-methylbutylene group, a 3-methylbutylene group, a 4-methylbutylene group, a 2,4-dimethylbutylene group, a 1,3-dimethylbutylene group, a pentylene group, a hexylene group, a heptylene group, and an octylene group. Examples of the cycloalkylidene group include a cyclopentylidene group, a cyclohexylidene group, and substitution products thereof.

[0027] Examples of polyhydric hydroxy aromatic compounds used as raw materials for polycarbonate resins include those corresponding to A in the above general formula (5). Specific examples include dihydroxybenzenes such as resorcinol, catechol, hydroquinone, 2-methylresorcinol, 2-ethylresorcinol, 2-propylresorcinol, 2-butylresorcinol, 2-tert-butylresorcinol, 2-phenylresorcinol, 2-cumylresorcinol, 2-methylhydroquinone, 2-ethylhydroquinone, 2-propylhydroquinone, 2-butylhydroquinone, 2-tert-butylhydroquinone, 2-phenylhydroquinone, and 2-cumylhydroquinone; bishydroxyaryls such as 4,4'-dihydroxydiphenyl; 1,1-bis(4-hydroxyphenyl)-2,4,4-trimethylcyclopentane, 1,1-bis(4-hydroxyphenyl)cyclohexane, and 1,1-bis(4 bis(hydroxyaryl)cycloalkanes such as 1,4-bis(4-hydroxyphenyl)-3,3-dimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 1,1-bis(4-hydroxy-3,5-dimethylphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)cyclododecane, 1,1-bis(4-hydroxy-3,5-dimethylphenyl)cyclododecane, 1,1-bis(4-hydroxyphenyl)cyclododecane; bis(hydroxyaryl)aryls such as 1,4-bis(4-hydroxyphenylsulfonyl)benzene and 4,4-bis(4-hydroxyphenylsulfonyl)benzene;Bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 1,2-bis(4-hydroxyphenoxy)ethane, 1,4-bis(4-hydroxyphenyl)propane, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(3-chloro-4-hydroxyphenyl)propane, 2,2-bis(3,5-dichloro-4-hydroxyphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis(4-hydroxyphenyl-3-methylphenyl)propane, 2,2-bis(4-hydroxyphenyl-3-cyclohexylphenyl)propane, 2,2-bis(4-hydroxyphenyl)propane Bis(hydroxyaryl)alkanes such as bis(3-tert-butylphenyl)propane, 2,2-bis(4-hydroxyphenyl-3-methoxyphenyl)propane, 1,1-bis(4-hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)isobutane, 2,2-bis(4-hydroxy)butane, and 2,4-bis(4-hydroxyphenyl-2-methyl)butane; dihydroxyaryl ketones such as bis(4-hydroxyphenyl)ketone and bis(4-hydroxy-3-methylphenyl)ketone; dihydroxyaryl ethers such as 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3,3'-dimethylphenyl ether, and 4,4'-dihydroxy-2,5-dihydroxydiphenyl ether;Examples of suitable dihydroxyaryl sulfur compounds include 4,4'-thiodiphenol, bis(4-hydroxyphenyl) sulfide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide, 2,2-bis(4-hydroxyphenyl) sulfone, 4,4'-dihydroxydiphenyl sulfone, and 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfone, as well as phenolphthalein. Examples of compounds other than those corresponding to A in the general formula (5) include compounds having a condensed ring, such as 2,2,2',2'-tetrahydro-3,3,3',3'-tetramethyl-1,1'-spirobis(1H-indene)-7,7'-diol. These compounds may be used alone or in combination, and may also be used in combination with a trivalent or higher polyvalent hydroxy aromatic compound.

[0028] Furthermore, examples of carbonate precursors that are raw materials for polycarbonate resins include carbonyl halides, carbonyl esters, haloformates, etc. Preferred specific examples include phosgene, carbonic acid diesters, diphenyl carbonate, dihaloformates of dihydric phenols, and mixtures thereof.

[0029] The weight-average molecular weight of the polycarbonate resin used in the present invention is preferably 10,000 to 200,000, and more preferably 20,000 to 60,000. If the weight-average molecular weight is less than 10,000, the impact resistance of the molded product may decrease, and if it exceeds 200,000, the fluidity may decrease, making processing difficult.

[0030] For the above reasons, a chain terminator may be used to control the molecular weight during the production of polycarbonate resin. Examples of chain terminators used in this case include long-chain alkylphenols such as phenol, p-chlorophenol, p-tert-butylphenol, 2,4,6-tribromophenol, and 4-(1,3-tetramethylbutyl)phenol; and phenolic compounds such as 3,5-ditert-butylphenol, p-isooctylphenol, p-tert-octylphenol, p-dodecylphenol, 2-(3,5-dimethylheptyl)phenol, and 4-(3,5-dimethylheptyl)phenol. The amount of these chain terminators typically used is 0.5 to 10 mol% of the diphenols in the polyhydric hydroxy aromatic compound used.

[0031] The content of component (A) is 40 to 80 parts by mass relative to 100 parts by mass of the total of components (A) to (C) of the present invention, and from the viewpoints of processability, flame retardancy, and drip prevention, it is preferably 45 to 75 parts by mass, and more preferably 50 to 70 parts by mass.

[0032] ((B) Glass fiber) The glass fiber (B) used in the present invention may be treated with a surface treatment agent to improve wettability and adhesiveness with the polycarbonate resin. Examples of such surface treatment agents include silane-based, titanate-based, aluminum-based, chromium-based, zirconium-based, and borane-based coupling agents. Among these, silane-based and titanate-based coupling agents are preferred, and silane-based coupling agents are particularly suitable. Examples of this silane coupling agent include triethoxysilane, vinyltris(β-methoxyethoxy)silane, γ-methacryloxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane, N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, and γ-chloropropyltrimethoxysilane.

[0033] The glass fibers may be used with a sizing agent to bundle the glass fibers, such as polypropylene resin, polyurethane resin, polyester resin, acrylic resin, epoxy resin, starch, vegetable oil, etc.

[0034] The glass fibers (B) used in the present invention may be commercially available.

[0035] The glass fibers (B) used in the present invention are preferably chopped strands formed by bundling single fibers, from the viewpoints of processability, flame retardancy, and drip prevention. The cut length of the chopped strands is preferably 1.0 mm to 5.0 mm, more preferably 2.0 mm to 4.0 mm, from the viewpoints of processability and flame retardancy. The diameter of the single fibers is preferably 8 μm to 16 μm, more preferably 10 μm to 14 μm, from the viewpoints of processability and flame retardancy.

[0036] The content of the (B) glass fiber in the resin composition of the present invention is 5 to 50 parts by mass relative to 100 parts by mass of the total of the (A) to (C) components of the present invention. From the viewpoints of processability, flame retardancy, and drip prevention, the content is preferably 10 to 40 parts by mass, and more preferably 10 to 30 parts by mass.

[0037] ((C) Phosphate ester flame retardants) The (C) phosphate ester flame retardant used in the present invention may be any of the commonly known compounds, but from the viewpoint of flame retardancy and rigidity, it is preferably one or more phosphate ester compounds having a structure represented by the following general formulas (1) to (4), and among these, it is more preferably a phosphate ester compound having a structure represented by the following general formula (2). From the viewpoint of storage stability and handling, it is more preferably a compound having a structure represented by the following general formula (2), wherein R 3 and R 4 Even more preferred are phosphate ester compounds in which is a hydrogen atom.

[0038] TIFF0007744898000004.tif47170In the above formula (1), R 1 and R 2 each independently represents a hydrogen atom or a methyl group, and n1 represents an integer of 1 to 7. TIFF0007744898000005.tif48170In the above formula (2), R 3 and R 4 each independently represents a hydrogen atom or a methyl group, and n2 represents an integer of 1 to 7. TIFF0007744898000006.tif52158In the above formula (3), R 5 and R 6 each independently represents a hydrogen atom or a methyl group, and n3 represents an integer of 1 to 7. TIFF0007744898000007.tif52158In the above formula (4), R 7 and R 8 each independently represents a hydrogen atom or a methyl group, and n4 represents an integer of 1 to 7.

[0039] The phosphate ester compound represented by the above general formula (1) (hereinafter also referred to as "phosphate ester compound (1)") is a compound containing one or more compounds in which n1 is 1, 2, 3, 4, 5, 6 or 7, and includes at least a compound in which n1 is 1.

[0040] The phosphate ester compound represented by the above general formula (2) (hereinafter also referred to as "phosphate ester compound (2)") is a compound containing one or more compounds in which n2 is 1, 2, 3, 4, 5, 6 or 7, and includes at least a compound in which n2 is 1.

[0041] The phosphate ester compound represented by the above general formula (3) (hereinafter also referred to as "phosphate ester compound (3)") is a compound containing one or more compounds in which n3 is 1, 2, 3, 4, 5, 6 or 7, and includes at least a compound in which n3 is 1.

[0042] The phosphate ester compound represented by the above general formula (4) (hereinafter also referred to as "phosphate ester compound (4)") is a compound containing one or more compounds in which n4 is 1, 2, 3, 4, 5, 6 or 7, and includes at least a compound in which n4 is 1.

[0043] In each of the phosphate ester compounds (1) to (4), the total content of compounds in which n1 to n4 are 1, 2, 3, 4, and 5 is preferably 97% by mass or more and 100% by mass or less, and more preferably 100% by mass, relative to the total 100% by mass of compounds in which n1 to n4 are 1, 2, 3, 4, 5, 6, or 7, from the viewpoints of storage stability and handleability. Furthermore, each of the phosphate ester compounds (1) to (4) does not necessarily contain all of the compounds in which n1 to n4 are 2, 3, 4, and 5. The content of compounds in which n1 to n4 are 1, 2, 3, 4, 5, 6, or 7 in each of the phosphate ester compounds (1) to (4) can be measured by liquid chromatography.

[0044] In each of the above phosphate ester compounds (1) to (4), the content of the compound where n1 to n4 are 1 relative to the total of 100% by mass of the compounds where n1 to n4 are 1, 2, 3, 4, 5, 6, or 7 is preferably from 50% by mass to 100% by mass, more preferably from 55% by mass to 95% by mass, and even more preferably from 60% by mass to 70% by mass, from the viewpoints of storage stability and handleability.

[0045] From the viewpoint of ease of handling, the (C) phosphate ester-based flame retardant used in the present invention is preferably liquid at room temperature (25°C). Here, "liquid" refers to a viscosity that allows easy visual confirmation of flow. It is also preferable that the (C) phosphate ester-based flame retardant is free from turbidity, crystals, or solid precipitation.

[0046] From the viewpoints of storage stability and handleability, the (C) phosphate ester-based flame retardant used in the present invention preferably has a viscosity at 25°C of 17,500 to 40,000 mPa·s, more preferably 18,500 to 37,000 mPa·s, even more preferably 19,500 to 32,000 mPa·s, and most preferably 19,500 to 28,000 mPa·s.

[0047] The viscosity in the present invention can be measured using a B-type viscometer in accordance with JIS K 7117-1 standard.

[0048] Specific examples of the (C) phosphate ester flame retardant used in the present invention include the following phosphate esters No. 1 to No. 8. Note that n11 to n18 in the following phosphate esters No. 1 to No. 8 are the numbers 1, 2, 3, 4, 5, 6, and 7, respectively.

[0049] TIFF0007744898000008.tif50158TIFF0007744898000009.tif215158TIFF0007744898000010.tif172158

[0050] These phosphate ester compounds may be used alone or in combination of two or more.

[0051] The (C) phosphate ester-based flame retardant used in the present invention is preferably one or more of the above-mentioned phosphate esters No. 1, No. 3, No. 5, and No. 7 from the viewpoints of storage stability and handling properties, and more preferably phosphate ester No. 3 from the viewpoint of flame retardancy.

[0052] The blending amount of component (C) in the resin composition of the present invention is 5 to 30 parts by mass per 100 parts by mass of the total of components (A) to (C) of the present invention, and from the viewpoints of processability, flame retardancy, and drip prevention, it is preferably 10 to 25 parts by mass, and more preferably 12 to 20 parts by mass.

[0053] The method for producing the (C) phosphate ester-based flame retardant used in the present invention is not particularly limited. For example, in the case of the above-mentioned phosphate ester No. 3, it can be produced by reacting 4,4'-dihydroxybiphenyl, phenol, and phosphorus oxychloride in the presence of a catalyst such as magnesium chloride, followed by dehydrochlorination. By adjusting the amount of phosphorus oxychloride used relative to 4,4'-dihydroxybiphenyl, the content of the phosphate ester compound where n13=1 can be adjusted to 50% by mass or more and less than 99% by mass. The amount of phosphorus oxychloride used is preferably 2.02 mol to 2.26 mol, more preferably 2.04 mol to 2.24 mol, and even more preferably 2.06 mol to 2.19 mol, per 1.00 mol of 4,4'-dihydroxybiphenyl.

[0054] The (C) phosphate ester flame retardant used in the present invention may contain, in addition to the above-mentioned phosphate ester compound, other components within the range that does not impair the effects of the present invention. As such other components, those exemplified as components that can be blended in the resin composition of the present invention, which will be described later, can be used.

[0055] The resin composition of the present invention may contain other optional components in addition to the essential components (A), (B), and (C). The timing of adding the components (A), (B), and (C) and other optional components to the resin composition of the present invention is not particularly limited. For example, two or more selected components other than the component (A) may be packed together in advance and added to the polycarbonate resin (A), or the components other than the component (A) may be sequentially added to the polycarbonate resin (A). When multiple components are packed together in a single pack, each component may be crushed and then mixed, or mixed and then crushed.

[0056] Other optional components that can be blended into the resin composition of the present invention will be described below.

[0057] The resin composition of the present invention may contain an organic sulfonic acid metal salt within a range that does not impair the effects of the present invention.

[0058] The usable metal salts of organic sulfonic acids are preferably alkali metal salts or alkaline earth metal salts, particularly sodium salts or potassium salts, such as sodium 3,4-dichlorobenzenesulfonate, sodium 2,4,5-trichlorobenzenesulfonate, sodium benzenesulfonate, disodium naphthalene-2,6-disulfonate, sodium p-iodobenzenesulfonate, sodium 4,4'-dibromodiphenyl-3-sulfonate, sodium 2,3,4,5,6-pentachloro-β-styrenesulfonate, sodium 4,4'-dichlorodiphenylsulfide-3-sulfonate, disodium tetrachlorodiphenyletherdisulfonate, and sodium 4,4'-dichloro Examples of suitable metal salts include disodium benzophenone-3,3'-disulfonate, sodium 2,5-dichlorothiophene-3-sulfonate, potassium diphenylsulfone-3-sulfonate, sodium salt of dimethyl 2,4,6-trichloro-5-sulfoisophthalate, potassium salt of dichlorophenyl 2,4,5-trichlorobenzenesulfonate, sodium 4'-[1,4,5,6,7,7'-hexachlorobicyclo-[2,2,1]-hept-5-en-endo-yl]benzenesulfonate, and potassium perfluorobutanesulfonate. Particularly preferred are sodium 3,4-dichlorobenzenesulfonate, sodium 2,4,5-trichlorobenzenesulfonate, sodium benzenesulfonate, potassium diphenylsulfone-3-sulfonate, and potassium perfluorobutanesulfonate. These metal salts may be used alone or in combination.

[0059] Furthermore, it is preferable to further add a phenol-based antioxidant, a phosphorus-based antioxidant, a thioether-based antioxidant, an ultraviolet absorber, a hindered amine-based light stabilizer, or the like to the resin composition of the present invention, as necessary, to stabilize the resin composition.

[0060] Examples of the phenolic antioxidant include 2,6-di-tert-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, distearyl (3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate, 1,6-hexamethylenebis[(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid amide], 4,4'-thiobis(6-tert-butyl-m-cresol), 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 4, 4'-butylidenebis(6-tert-butyl-m-cresol), 2,2'-ethylidenebis(4,6-di-tert-butylphenol), 2,2'-ethylidenebis(4-sec-butyl-6-tert-butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 1,3,5-tris(2,6-dimethyl-3-hydroxy-4-tert-butylbenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4 -hydroxybenzyl)-2,4,6-trimethylbenzene, 2-tert-butyl-4-methyl-6-(2-acryloyloxy-3-tert-butyl-5-methylbenzyl)phenol, stearyl (3,5-di-tert-butyl-4-hydroxyphenyl)propionate, tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)methylpropionate]methane, thiodiethylene glycol bis[(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 1,6-hexamethylenebis[(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] diphenyl)propionate], bis[3,3-bis(4-hydroxy-3-tert-butylphenyl)butyric acid] glycol ester, bis[2-tert-butyl-4-methyl-6-(2-hydroxy-3-tert-butyl-5-methylbenzyl)phenyl] terephthalate, 1,3,5-tris[(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxyethyl] isocyanurate, 3,9-bis[1,1-dimethyl-2-{(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}ethyl]-2,4,8,Examples include 10-tetraoxaspiro[5,5]undecane and triethylene glycol bis[(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate].

[0061] The amount of these phenolic antioxidants used is preferably 0.001 to 10 parts by mass, and more preferably 0.05 to 5 parts by mass, per 100 parts by mass of the polycarbonate resin (A).

[0062] Examples of the phosphorus-based antioxidants include trisnonylphenyl phosphite, tris[2-tert-butyl-4-(3-tert-butyl-4-hydroxy-5-methylphenylthio)-5-methylphenyl]phosphite, tridecyl phosphite, octyl diphenyl phosphite, didecyl monophenyl phosphite, bis(tridecyl)pentaerythritol diphosphite, bis(nonylphenyl)pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,4,6-tri-tert-butylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl)pentaerythritol diphosphite, tetrakis(tridecyl)isopropylidenediphenol diphosphite, tetrakis(tridecyl)-4,4'-n-butylidenebis( 2-tert-butyl-5-methylphenol) diphosphite, hexakis(tridecyl)-1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane triphosphite, tetrakis(2,4-di-tert-butylphenyl)biphenylene diphosphonite, 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 2,2'-methylenebis(4,6-tert-butylphenyl)-2-ethylhexyl phosphite, Examples include 2,2'-methylenebis(4,6-tert-butylphenyl)-octadecyl phosphite, 2,2'-ethylidenebis(4,6-di-tert-butylphenyl)fluorophosphite, tris(2-[(2,4,8,10-tetrakis-tert-butyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]ethyl)amine, and phosphite of 2-ethyl-2-butylpropylene glycol and 2,4,6-tri-tert-butylphenol.

[0063] The amount of these phosphorus-based antioxidants used is preferably 0.001 to 10 parts by mass, and more preferably 0.05 to 5 parts by mass, per 100 parts by mass of the (A) polycarbonate resin.

[0064] Examples of the thioether antioxidant include dialkyl thiodipropionates such as dilauryl thiodipropionate, dimyristyl thiodipropionate, and distearyl thiodipropionate, and pentaerythritol tetrakis(β-alkylmercaptopropionates).

[0065] The amount of these thioether-based antioxidants used is preferably 0.001 to 10 parts by mass, and more preferably 0.05 to 5 parts by mass, per 100 parts by mass of the (A) polycarbonate resin.

[0066] Examples of the ultraviolet absorber include 2-hydroxybenzophenones such as 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 5,5'-methylenebis(2-hydroxy-4-methoxybenzophenone); 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole, and 2-(2'-hydroxy-3',5'- 2-(2'-hydroxyphenyl)benzotriazoles such as 2-(tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-dicumylphenyl)benzotriazole, 2,2'-methylenebis(4-tert-octyl-6-(benzotriazolyl)phenol), and 2-(2'-hydroxy-3'-tert-butyl-5'-carboxyphenyl)benzotriazole; phenyl salicylate Benzoates such as 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate, 2,4-di-tert-amylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate, and hexadecyl-3,5-di-tert-butyl-4-hydroxybenzoate; substituted oxanilides such as 2-ethyl-2'-ethoxyoxanilide and 2-ethoxy-4'-dodecyloxanilide; ethyl-α-cyano-β,β-diphenylacrylate, methyl cyanoacrylates such as 2-(2-cyano-3-methyl-3-(p-methoxyphenyl)acrylate; and triaryltriazines such as 2-(2-hydroxy-4-octoxyphenyl)-4,6-bis(2,4-di-tert-butylphenyl)-s-triazine, 2-(2-hydroxy-4-methoxyphenyl)-4,6-diphenyl-s-triazine, and 2-(2-hydroxy-4-propoxy-5-methylphenyl)-4,6-bis(2,4-di-tert-butylphenyl)-s-triazine.

[0067] The amount of these ultraviolet absorbers used is preferably 0.001 to 30 parts by mass, and more preferably 0.05 to 10 parts by mass, per 100 parts by mass of the (A) polycarbonate resin.

[0068] Examples of the hindered amine light stabilizer include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2,6,6-tetramethyl-4-piperidyl benzoate, bis(2,2,6,6-tetramethyl-4-piperidyl)sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate, tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, tetrakis(1,2 ,2,6,6-pentamethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, bis(2,2,6,6-tetramethyl-4-piperidyl)·bis(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)·bis(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)·bis(tridecyl)-1,2,3,4-butanetetracarboxylate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)-2-butyl-2-(3,5-di-tert-butyl-4-hydroxybenzyl)malonate, 1-(2-hydroxybenzyl)- Polycondensation product of 1,6-bis(2,2,6,6-tetramethyl-4-piperidinol / diethyl succinate, polycondensation product of 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-morpholino-s-triazine, polycondensation product of 1,6-bis(2,2,6,6-tetramethyl-4-piperidylamino)hexane / 2,4-dichloro-6-tert-octylamino-s-triazine, polycondensation product of 1,5,8,12-tetrakis[2,4-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino] 1,6,11-Tris[2,4-bis(N-butyl-N-(2,2,6,6-tetramethyl-4-piperidyl)amino)-s-triazin-6-yl]aminoundecane, 1,6,11-Tris[2,4-bis(N-butyl-N-(1,2,2,6,6-tetramethyl-4-piperidyl)amino)-s-triazin-6-yl]aminoundecane, 1,6,11-Tris[2,4-bis(N-butyl-N-(1,2,2,6,6-pentamethyl-4-piperidyl)amino)-s-triazin-6-yl)aminoundecane, bis(2,2,6,6-tetramethyl-1-octyloxy-4-piperidyl)decanedioate, bis(2,2,6,6-tetramethyl-1-undecyloxypiperidin-4-yl)carbonate, and TINUVIN NOR 371 manufactured by BASF.

[0069] The amount of these hindered amine light stabilizers used is preferably 0.001 to 30 parts by mass, and more preferably 0.05 to 10 parts by mass, per 100 parts by mass of the polycarbonate resin (A).

[0070] To the resin composition of the present invention, an antistatic agent, a crystal nucleating agent (nucleating agent), a plasticizer, a lubricant, a metal soap, hydrotalcite, a triazine ring-containing compound, a metal hydroxide, an inorganic phosphorus-based flame retardant, a silicon-based flame retardant, other inorganic flame retardant aids, other organic flame retardant aids, an anti-drip agent, a filler, a pigment, a foaming agent, and the like may be added as needed, within a range that does not impair the effects of the present invention.

[0071] Examples of the triazine ring-containing compound include melamine, ammeline, benzoguanamine, acetoguanamine, phthalodiguanamine, melamine cyanurate, melamine phosphate, melamine pyrophosphate, melamine polyphosphate, butylenediguanamine, norbornenediguanamine, methylenediguanamine, ethylenedimelamine, trimethylenedimelamine, tetramethylenedimelamine, hexamethylenedimelamine, and 1,3-hexylenedimelamine.

[0072] Examples of the metal hydroxide include magnesium hydroxide, aluminum hydroxide, calcium hydroxide, barium hydroxide, zinc hydroxide, and Kisuma 5A (magnesium hydroxide: trade name manufactured by Kyowa Chemical Industry Co., Ltd.).

[0073] Examples of the other inorganic flame retardant aids include inorganic compounds such as zinc oxide, titanium oxide, aluminum oxide, magnesium oxide, and hydrotalcite, as well as surface-treated products thereof. In the present invention, various commercially available products can be used, such as TIPAQUE R-680 (titanium oxide: trade name, manufactured by Ishihara Sangyo Kaisha), Kyowamag 150 (magnesium oxide: trade name, manufactured by Kyowa Chemical Industry Co., Ltd.), DHT-4A (hydrotalcite: trade name, manufactured by Kyowa Chemical Industry Co., Ltd.), and Alkamiser 4 (zinc-modified hydrotalcite: trade name, manufactured by Kyowa Chemical Industry Co., Ltd.).

[0074] The other organic flame retardant aids include, for example, pentaerythritol.

[0075] Examples of the anti-drip agent include silicone rubbers, smectite clay minerals such as saponite, montmorillonite, hectorite, beidellite, stevensite, and nontronite, and layered silicates such as talc, vermiculite, halloysite, and swelling mica.

[0076] In addition, when a fluorine-containing resin such as polytetrafluoroethylene, polyvinylidene fluoride, or polyhexafluoropropylene is used as an anti-drip agent, the melt fluidity of the resin composition during molding processing may decrease, resulting in molding defects. For this reason, in the resin composition of the present invention, the content of the fluorine-containing resin is preferably 0.15 parts by mass or less, more preferably 0.05 parts by mass or less, and even more preferably 0.02 parts by mass or less, relative to 100 parts by mass of the resin composition of the present invention, and it is particularly preferable that the resin composition does not contain a fluorine-containing resin. In particular, the content of PTFE is preferably 0.15 parts by mass or less, more preferably 0.05 parts by mass or less, and even more preferably 0.02 parts by mass or less, relative to 100 parts by mass of the resin composition of the present invention, and it is particularly preferable that the resin composition does not contain PTFE.

[0077] If necessary, the resin composition of the present invention may further contain additives that are usually used in synthetic resins, such as crosslinking agents, antistatic agents, antifogging agents, anti-plate-out agents, surface treatment agents, plasticizers, lubricants, reinforcing materials, other flame retardants, fluorescent agents, antifungal agents, bactericides, foaming agents, metal deactivators, release agents, pigments, processing aids, antioxidants, light stabilizers, silicone oils, and silane coupling agents, within a range that does not impair the effects of the present invention.

[0078] The form of the resin composition of the present invention is not particularly limited, but from the viewpoint of the handleability of the resin composition, it is preferably in the form of pellets, powder, granules or flakes, and more preferably in the form of pellets.

[0079] The resin composition of the present invention can be used alone or in combination with a resin composition other than the present invention, an additive component, or a mixture thereof for molding, etc. The resin composition of the present invention can also be used as a masterbatch.

[0080] <Molded body> The molded article of the present invention can be obtained by molding the resin composition of the present invention by a known method. The molding method is not particularly limited, and examples thereof include extrusion molding, calendar molding, injection molding, roll molding, compression molding, and blow molding. These molding methods can be used to produce molded articles of various shapes, such as resin plates, sheets, films, pellets, and irregularly shaped products.

[0081] The molded article of the present invention can be suitably used in the form of a thin resin plate, sheet, film, irregular shape, etc., due to its excellent flame retardancy.

[0082] The thickness of the molded article of the present invention is not particularly limited, but from the viewpoint of improving the balance between flame retardancy, mechanical strength such as rigidity, and light weight, the lower limit of the thickness is preferably 0.1 mm, more preferably 0.3 mm, and even more preferably 0.5 mm, and the upper limit of the thickness is preferably 1.0 mm, more preferably 0.9 mm, and even more preferably 0.8 mm.

[0083] Furthermore, the resin composition and molded articles thereof of the present invention can be used in a wide range of industrial fields, including electricity, electronics, and communications, agriculture, forestry, and fisheries, mining, construction, food, textiles, clothing, medicine, coal, petroleum, rubber, leather, automobiles, precision instruments, wood, building materials, civil engineering, furniture, printing, and musical instruments. More specifically, they can be used in office automation equipment such as printers, personal computers, word processors, keyboards, PDAs (personal digital assistants), telephones, copiers, facsimiles, ECRs (electronic cash registers), calculators, electronic organizers, cards, holders, and stationery, home appliances such as washing machines, refrigerators, vacuum cleaners, microwave ovens, lighting fixtures, game consoles, irons, and kotatsu tables, audiovisual equipment such as TVs, VTRs, video cameras, radio cassette players, tape recorders, minidiscs, CD players, speakers, and liquid crystal displays, and electrical and electronic components and communication equipment such as connectors, relays, capacitors, switches, printed circuit boards, coil bobbins, semiconductor encapsulation materials, LED encapsulation materials, electric wires, cables, transformers, deflection yokes, distribution boards, and watches.

[0084] The resin composition of the present invention and its molded article can also be used as optical materials for optical disks, CD disks, DVD disks, lenses, etc., or as a replacement for glass.

[0085] Furthermore, the resin composition of the present invention and molded articles thereof are used in a variety of applications, including materials for automobiles, vehicles, ships, aircraft, buildings, houses, and construction such as seats (padding, outer material, etc.), belts, ceiling coverings, convertible tops, armrests, door trims, rear package trays, carpets, mats, sun visors, wheel covers, mattress covers, airbags, insulating materials, hand straps, hand straps, wire covering materials, electrical insulating materials, paints, coating materials, upholstery materials, flooring materials, partition walls, carpets, wallpaper, wall coverings, exterior materials, interior materials, roofing materials, deck materials, wall materials, pillar materials, flooring boards, fence materials, frames and moldings, window and door profiles, shingles, paneling, terraces, balconies, soundproofing boards, heat insulating boards, and window materials; civil engineering materials, clothing, daily necessities such as curtains, sheets, plywood, synthetic fiber boards, carpets, entrance mats, sheets, buckets, hoses, containers, eyeglasses, bags, cases, goggles, skis, rackets, tents, and musical instruments; and sporting goods. [Example]

[0086] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. All formulations shown in the following tables are based on parts by mass.

[0087] [Examples 1 to 9, Reference Examples 1 to 6, Comparative Examples 1 to 7] Resin compositions were formulated according to the formulations set forth in the table below.

[0088] Details of each component in the table below are as follows: (A) Polycarbonate resin: Iupilon S-3000F (manufactured by Mitsubishi Engineering Plastics Corporation, weight average molecular weight: 43,000) (B) Glass fiber: Chopped strand CS3PE-455S (manufactured by Nitto Boseki Co., Ltd., cut length 3.0 mm, single fiber diameter 13 μm) (C) Phosphate ester flame retardant: The following test compounds 1 to 5 were used.

[0089] TIFF0007744898000011.tif50158 Of the total 100 mass% of compounds in which n21 of test compound-1 is 1, 2, 3, 4, 5, 6 or 7, the compound in which n21 is 1 is 85.6 mass%, and the total content of compounds in which n21 is 1, 2, 3, 4 and 5 is 100 mass%.

[0090] TIFF0007744898000012.tif50158 Of the total 100 mass% of compounds in which n22 is 1, 2, 3, 4, 5, 6 or 7 in test compound-2, the total content of compounds in which n22 is 1 is 66.9 mass%, and the total content of compounds in which n22 is 1, 2, 3, 4 and 5 is 99.8 mass%.

[0091] TIFF0007744898000013.tif49158TIFF0007744898000014.tif99158

[0092] Next, each resin composition was extruded under processing conditions of 280°C to produce pellets, which were then injection molded under the conditions described below to obtain test pieces for flame retardancy tests measuring 127 mm × 12.7 mm × 1.6 mm and 127 mm × 12.7 mm × 0.8 mm, and test pieces for flexural modulus tests measuring 80 mm × 10 mm × 4 mm.

[0093] At this time, the flame retardancy test specimens were evaluated for processability during injection molding according to the following criteria, and the results are shown in the table below.

[0094] <Injection molding processing conditions> Injection molding machine: EC60NII (manufactured by Toshiba Machine Co., Ltd.) Cylinder temperature: 280℃ Mold temperature: 70~80℃ Injection (upper limit) pressure: <200MPa Injection speed: 40~220mm / sec Holding pressure: 40 to 60 MPa

[0095] <Processability evaluation> The processability of the resin composition was evaluated on the following two-point scale based on the occurrence of short shots when the above-mentioned UL-94V flame retardancy test specimens (0.8 mm thick) were prepared by injection molding. Here, short shots refer to a phenomenon in which the resin solidifies before it is fully filled into the mold due to reasons such as insufficient fluidity of the molten resin during injection molding, resulting in an incompletely shaped molded product. ◯: No short shot occurred and a test piece of the specified size was obtained. ×: Short shot occurred, and a test piece of the specified size could not be obtained.

[0096] Further, the obtained test pieces were subjected to a flame retardancy test and a flexural modulus test under the following conditions, and the results of each test are shown in the table below.

[0097] <Flame retardancy test (UL-94V)> The flame retardancy test specimen obtained above (127 mm long, 12.7 mm wide, 1.6 mm or 0.8 mm thick) was held vertically, and a burner flame was applied to the bottom edge for 10 seconds. The flame was then removed and the time until the flame on the specimen was extinguished was measured. Next, as soon as the flame was extinguished, the specimen was exposed to flame for a second time for 10 seconds, and the time until the flame was extinguished was measured in the same manner as the first time. At the same time, an evaluation was also made to see whether the falling embers would ignite the cotton placed under the specimen.

[0098] The flammability rating was determined according to the UL-94V standard based on the first and second burning times, and whether or not the cotton ignited.

[0099] <Flexural modulus test> The test specimens for the flexural modulus test (length 80 mm, width 10 mm, thickness 4 mm) obtained above were left to stand in a thermo-hygrostat at 23°C for 48 hours or more after molding, and then the flexural modulus (unit: GPa) was measured in accordance with ISO178 using a flexural tester "AG-1kNIS Fully Automatic Plastic Bending Tester" manufactured by Shimadzu Corporation.

[0100] [Table 1]

[0101] [Table 2]

[0102] [Table 3]

[0103] As shown in the table above, it was confirmed that the compositions satisfying the present invention (Examples 1 to 9, Reference Examples 1 to 6) simultaneously possessed excellent flame retardancy and rigidity. On the other hand, the compositions lacking one or more of the (B) and (C) components (Comparative Examples 1 to 7) were rated as NR to V-2 in flame retardancy or had inferior rigidity (flexural modulus) compared to the Examples, failing to achieve both flame retardancy and rigidity.

[0104] From the above, it was confirmed that the resin composition of the present invention has excellent flame retardancy and rigidity and can be suitably used as a flame-retardant resin composition.

Claims

1. A glass fiber-containing flame-retardant polycarbonate resin composition containing (A) a polycarbonate resin, (B) glass fibers, and (C) a phosphate ester-based flame retardant, The (C) phosphate ester-based flame retardant is a compound having a structure represented by the following general formula (2): The composition contains 40 to 80 parts by mass of the component (A), 5 to 50 parts by mass of the component (B), and 12 to 20 parts by mass of the component (C) relative to a total of 100 parts by mass of the components (A), (B), and (C), A glass fiber-containing flame-retardant polycarbonate resin composition, characterized in that it contains 0.15 parts by mass or less of a fluorine-containing resin per 100 parts by mass of the glass fiber-containing flame-retardant polycarbonate resin composition. In the above formula (2), R ３ and R ４ each independently represents a hydrogen atom or a methyl group, and n2 represents an integer of 1 to 7.

2. 2. The glass fiber-containing flame-retardant polycarbonate resin composition according to claim 1, wherein the content of the glass fiber (B) is 10 to 40 parts by mass per 100 parts by mass of the total of the components (A) to (C).

3. 2. The glass fiber-containing flame-retardant polycarbonate resin composition according to claim 1, which does not contain said fluorine-containing resin.

4. The glass fiber-containing flame-retardant polycarbonate of claim 3, which does not contain polytetrafluoroethylene. Carbonate resin composition.

5. 2. The glass fiber-containing flame-retardant polycarbonate resin composition according to claim 1, wherein the glass fibers (B) are chopped strands formed by bundling single fibers, and the chopped strands have a cut length of 1.0 mm to 5.0 mm.

6. 2. The glass fiber-containing flame-retardant polycarbonate resin composition according to claim 1, which is in the form of pellets.

7. A molded article obtained from the glass fiber-containing flame-retardant polycarbonate resin composition according to claim 1.

8. The molded article according to claim 7, which has a thickness of 0.1 mm to 1.0 mm.

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