Polycarbonate resin composition

Abstract

The present invention is a polycarbonate resin composition having excellent flame retardancy and excellent LDS performance while being an environmentally friendly material that clears various regulations. The polycarbonate resin composition is characterized by containing, per 100 parts by mass of a polycarbonate resin (A), 0.5-50 parts by mass of a laser direct structuring additive (B), 0.01-1 part by mass of an organic sulfonic acid metal salt (C), and 0.1-5.5 parts by mass of a flame retardant auxiliary agent (D) having a 10% weight loss temperature of 350°C-600°C.

Description

Polycarbonate resin composition 【0001】 The present invention relates to a polycarbonate resin composition, and more specifically, to a polycarbonate resin composition that complies with various regulations such as PFAS, is environmentally friendly, has excellent laser direct structuring performance, and possesses excellent flame retardancy. 【0002】 Polycarbonate resin is a resin with excellent heat resistance, mechanical properties, and electrical properties, and is widely used as a material for manufacturing parts in various industrial fields, such as vehicle parts, electrical and electronic equipment components, housing materials, and other industrial sectors. In particular, flame-retardant polycarbonate resin compositions are suitably used as parts for vehicle parts, electrical and electronic equipment components such as personal computers, mobile phones, and battery cases, and components for office automation and information equipment such as printers and photocopiers. 【0003】 In recent years, there has been a growing demand for methods to manufacture antennas capable of 3D design for a wide range of applications, including smartphones, various 5G devices, in-vehicle communication systems, and base stations. One such technology for forming 3D antennas is laser direct structuring (hereinafter sometimes referred to as "LDS"), which has attracted considerable attention. LDS technology is a technique in which, for example, a laser is irradiated onto the surface of a molded product (resin molded product) containing an LDS additive to activate it, and a plating layer is formed by applying metal to the activated portion. The characteristic of this technology is that metal structures such as antennas can be manufactured directly on the surface of a resin molded product without using adhesives or the like (for example, Patent Document 1). 【0004】In recent years, there has been a growing demand for flame retardancy, and polycarbonate resin molded products are now required to have a high degree of flame retardancy, with V-0 performance in UL-94 testing becoming increasingly necessary. Halogenated and phosphorus-based flame retardants have been used to impart flame retardancy to polycarbonate resins. However, achieving V-0 flame retardancy with phosphorus-based flame retardants requires a relatively high additive rate, which tends to degrade the mechanical performance of the polycarbonate resin material. Flame retardation using halogenated bromine-based or chlorine-based flame retardants is subject to stricter regulations prohibiting their use due to toxicity and environmental problems caused by the generation of harmful gases. Fluorine-based flame retardants, such as perfluoroalkane metal salts, enable high levels of flame retardancy with relatively small amounts. Furthermore, by combining such flame retardants with polyfluoroethylene as a drip-preventing agent, dripping can be suppressed and flame retardancy can be further improved. However, in recent years, fluorine compounds have become subject to international regulations, primarily in Japan, Europe, and the United States. PFAS regulations for perfluoroalkyl and polyfluoroalkyl compounds are progressing, mainly in the EU and the US, and polyfluoroethylenes are also included. PFAS regulations are being further strengthened internationally. 【0005】 International Publication No. 2009 / 141799 【0006】 Therefore, there is a strong demand for a highly functional, flame-retardant polycarbonate resin composition for LDS that does not generate toxic gases during combustion, clears various regulations, and is environmentally friendly. The present invention has been made in view of the above circumstances, and its objective (problem) is to provide a polycarbonate resin composition that is environmentally friendly, has excellent LDS performance, and possesses excellent flame retardancy. 【0007】 The inventors, after diligent research to achieve the above objectives, discovered that the above objectives could be solved by combining LDS additives, organic sulfonic acid metal salts, and specific flame retardant additives in specific amounts, and thus completed the present invention. The present invention relates to the following polycarbonate resin composition and molded article. 【0008】1. A polycarbonate resin composition characterized by containing, per 100 parts by mass of polycarbonate resin (A), 0.5 to 50 parts by mass of laser direct structuring additive (B), 0.01 to 1 part by mass of organic sulfonic acid metal salt (C), and 0.1 to 5.5 parts by mass of flame retardant aid (D) having a 10% weight loss temperature of 350 to 600°C. 2. The polycarbonate resin composition according to 1 above, wherein the flame retardant aid (D) is a mineral having aluminum or magnesium. 3. The polycarbonate resin composition according to 1 or 2 above, wherein the flame retardant aid (D) is a silicate mineral. 4. The polycarbonate resin composition according to any one of 1 to 3 above, wherein the flame retardant aid (D) is selected from boehmite, halloysite, sepiolite, hydromagnesite, kaolin, montmorillonite, pyrophyllite, attapulgite, and vermiculite. 5. 1. A polycarbonate resin composition according to any one of 1 to 4 above, wherein the content of the flame retardant aid (D) is 0.1 to 1.0 parts by mass per 100 parts by mass of polycarbonate resin (A). 6. A polycarbonate resin composition according to any one of 1 to 5 above, wherein the organic sulfonic acid metal salt (C) is an organic sulfonic acid metal salt that does not contain phosphorus or halogen. 7. A polycarbonate resin composition according to any one of 1 to 6 above, wherein the organic sulfonic acid metal salt (C) is an aromatic sulfonic acid metal salt. 8. A polycarbonate resin composition according to any one of 1 to 7 above, further containing a filler (E) in an amount of 1 to 90 parts by mass per 100 parts by mass of polycarbonate resin (A). 9. A polycarbonate resin composition according to 8 above, wherein the filler (E) is a glass-based filler. 10. A polycarbonate resin composition according to 9 above, wherein the filler (E) is glass fiber. 11. 12. A polycarbonate resin composition according to any one of 1 to 10 above, wherein the fluorine content measured by combustion ion chromatography is less than 500 ppm by mass. 13. A polycarbonate resin composition according to any one of 1 to 11 above, wherein the UL-94 is V-0 at a thickness of 1.5 mm. 14. A molded article of the polycarbonate resin composition according to any one of 1 to 13 above. 15. A molded article of the pellets according to 13 above.16. A polycarbonate resin composition characterized by containing, per 100 parts by mass of polycarbonate resin (A), 0.5 to 50 parts by mass of laser direct structuring additive (B), 0.01 to 1 part by mass of organic sulfonic acid metal salt (C), and 0.1 to 5.5 parts by mass of a mineral (D) selected from one or more of boehmite, halloysite, sepiolite, hydromagnesite, kaolin, montmorillonite, pyrophyllite, attapulgite, and vermiculite. 【0009】 The polycarbonate resin composition of the present invention is an environmentally friendly material that clears various regulations such as PFAS, does not generate toxic gases when burned, has high flame retardancy that is environmentally friendly, can achieve V-0 at a thickness of 1.5 mm, has excellent LDS performance, and also has excellent flexural modulus and heat resistance. 【0010】 The present invention will be described in detail below with reference to embodiments and examples. In this specification, unless otherwise specified, "~" means that the numerical values ​​described before and after it are included as the lower limit and upper limit. 【0011】 The polycarbonate resin composition of the present invention is characterized by containing, per 100 parts by mass of polycarbonate resin (A), 0.5 to 50 parts by mass of laser direct structuring additive (B), 0.01 to 1 part by mass of organic sulfonic acid metal salt (C), and 0.1 to 5.5 parts by mass of flame retardant aid (D) having a 10% weight loss temperature of 350 to 600°C. 【0012】 [Polycarbonate Resin (A)] The polycarbonate resin (A) used in the present invention is not particularly limited, and various types can be used. Polycarbonate resins can be classified into aromatic polycarbonate resins, in which the carbons directly bonded to the carbonate bonds are aromatic carbons, and aliphatic polycarbonate resins, in which the carbons are aliphatic carbons, and either can be used. Among these, aromatic polycarbonate resin is preferred as polycarbonate resin (A) from the viewpoint of heat resistance, mechanical properties, electrical properties, etc. 【0013】Examples of aromatic dihydroxy compounds among the monomers used as raw materials for aromatic polycarbonate resins include: dihydroxybenzenes such as 1,2-dihydroxybenzene, 1,3-dihydroxybenzene (i.e., resorcinol), and 1,4-dihydroxybenzene; and dihydroxybiphenyls such as 2,5-dihydroxybiphenyl, 2,2'-dihydroxybiphenyl, and 4,4'-dihydroxybiphenyl. 【0014】 Dihydroxynaphthalene compounds such as 2,2'-dihydroxy-1,1'-binaphthyl, 1,2-dihydroxynaphthalene, 1,3-dihydroxynaphthalene, 2,3-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 1,7-dihydroxynaphthalene, and 2,7-dihydroxynaphthalene; 【0015】 Dihydroxydiaryl ethers such as 2,2'-dihydroxydiphenyl ether, 3,3'-dihydroxydiphenyl ether, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3,3'-dimethyldiphenyl ether, 1,4-bis(3-hydroxyphenoxy)benzene, and 1,3-bis(4-hydroxyphenoxy)benzene; 【0016】2,2-bis(4-hydroxyphenyl)propane (i.e., bisphenol A), 1,1-bis(4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane (i.e., bisphenol C), 2,2-bis(3-methoxy-4-hydroxyphenyl)propane, 2-(4-hydroxyphenyl)-2-(3-methoxy-4-hydroxyphenyl)propane, 1,1-bis(3-tert-butyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2-bis(3-cyclohexyl-4-hydroxyphenyl)propane, 2-(4-hydroxyphenyl)-2-(3-cyclohexyl-4-hydroxyphenyl)propane, α,α'-bis(4-hydroxyphenyl)-1,4-diisopropylbenzene, 1,3-bis[2-(4-hydroxyphenyl)-2-propyl]benzene, Bis(4-hydroxyphenyl)methane, Bis(4-hydroxyphenyl)cyclohexylmethane, Bis(4-hydroxyphenyl)phenylmethane, Bis(4-hydroxyphenyl)(4-propenylphenyl)methane, Bis(4-hydroxyphenyl)diphenylmethane, Bis(4-hydroxyphenyl)naphthylmethane, 1,1-bis(4-hydroxyphenyl)ethane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 1,1-bis(4-hydroxyphenyl)-1-naphthylethane, 1,1-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)pentane, 1,1-bis(4-hydroxyphenyl)hexane, 2,2-bis(4-hydroxyphenyl)hexane, 1,1-bis(4-hydroxyphenyl)octane, 2,2-bis(4-hydroxyphenyl)octane, Bis(hydroxyaryl)alkanes such as 4,4-bis(4-hydroxyphenyl)heptane, 2,2-bis(4-hydroxyphenyl)nonane, 1,1-bis(4-hydroxyphenyl)decane, and 1,1-bis(4-hydroxyphenyl)dodecane; 【0017】1,1-bis(4-hydroxyphenyl)cyclopentane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3-dimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3,4-dimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3,5-dimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 1,1-bis(4-hydroxy-3,5-dimethylphenyl)-3,3,5-trimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3-propyl-5-methylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3-tert-butyl-cyclohexane, 1,1-bis(4-hydroxyphenyl)-4-tert-butyl-cyclohexane, 1,1-bis(4-hydroxyphenyl)-3-phenylcyclohexane, 1,1-bis(4-hydroxyphenyl)-4-phenylcyclohexane, and other bis(hydroxyaryl)cycloalkanes; 【0018】 9,9-bis(4-hydroxyphenyl)fluorene, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, and other bisphenols containing a cardo structure; 【0019】 4,4'-dihydroxydiphenyl sulfide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfide, and other dihydroxydiaryl sulfides; 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide, and other dihydroxydiaryl sulfoxides; 4,4'-dihydroxydiphenyl sulfone, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfone, and other dihydroxydiaryl sulfones; and the like. 【0020】Among these, bis(hydroxyaryl)alkanes are preferred, and among them, bis(4-hydroxyphenyl)alkanes are preferred. Particularly, from the viewpoints of impact resistance and heat resistance, 2,2-bis(4-hydroxyphenyl)propane (i.e., bisphenol A) and 2,2-bis(3-methyl-4-hydroxyphenyl)propane (i.e., bisphenol C) are preferred. Note that the aromatic dihydroxy compound may be used alone or in combination of two or more in any combination and ratio. 【0021】 Among the monomers used as raw materials for the polycarbonate resin, examples of carbonate precursors include carbonyl halides, carbonate esters, etc. Note that the carbonate precursor may be used alone or in combination of two or more in any combination and ratio. 【0022】 Specific examples of the carbonyl halide include, for example, phosgene; haloformates such as bischloroformate of dihydroxy compound and monochloroformate of dihydroxy compound. 【0023】 Specific examples of the carbonate ester include, for example, diaryl carbonates such as diphenyl carbonate and ditolyl carbonate; dialkyl carbonates such as dimethyl carbonate and diethyl carbonate; carbonate compounds of dihydroxy compound such as biscarbonate of dihydroxy compound, monocarbonate of dihydroxy compound, and cyclic carbonate. 【0024】 The method for producing the polycarbonate resin (A) is not particularly limited, and any method can be adopted. Examples thereof include interfacial polymerization method, melt transesterification method, ring-opening polymerization method of cyclic carbonate compound, solid-phase transesterification method of prepolymer, etc. Among these, those by the interfacial polymerization method and melt transesterification method are preferred because of the higher effect of improving the moisture and heat resistance, and the interfacial polymerization method is particularly preferred. 【0025】The molecular weight of the polycarbonate resin (A) is the viscosity-average molecular weight (Mv) calculated from the solution viscosity measured at 25°C using methylene chloride as the solvent, preferably 10,000 to 50,000, more preferably 11,000 to 40,000, and more preferably 12,000 to 35,000, and especially preferably 13,000 to 30,000. By setting the viscosity-average molecular weight to be above the lower limit of the above range, the mechanical strength of the polycarbonate resin composition of the present invention can be further improved, and by setting the viscosity-average molecular weight to be below the upper limit of the above range, the decrease in fluidity of the polycarbonate resin composition of the present invention can be suppressed and improved, thereby improving moldability and making molding easier. In addition, two or more types of polycarbonate resins with different viscosity-average molecular weights may be mixed and used, and in this case, polycarbonate resins with viscosity-average molecular weights outside the above preferred range may be mixed. 【0026】 The viscosity-average molecular weight [Mv] is calculated by using methylene chloride as the solvent, determining the intrinsic viscosity [η] (unit: dl / g) at 25°C using an Ubbelohde viscometer, and then using Schnell's viscosity formula, i.e., η = 1.23 × 10⁻¹⁰. －４ Mv ０．８３ It refers to the value calculated from [the formula]. Furthermore, intrinsic viscosity [η] is the specific viscosity [η] at each solution concentration [C] (g / dl). ｓｐ This value was calculated by measuring [the value] and using the following formula. 【0027】 Furthermore, in order to improve the appearance and fluidity of the molded product, the polycarbonate resin (A) may contain polycarbonate oligomers. The viscosity-average molecular weight [Mv] of these polycarbonate oligomers is usually 1500 or more, preferably 2000 or more, and usually 9500 or less, preferably 9000 or less. Moreover, it is preferable that the amount of polycarbonate oligomers contained be 30% by mass or less of the polycarbonate resin (including the polycarbonate oligomers). 【0028】Furthermore, the polycarbonate resin (A) may be made not only from virgin raw materials but also from polycarbonate resin recycled from used products (so-called material-recycled polycarbonate resin), and it is also preferable to contain both virgin raw materials and recycled resin, or to consist solely of recycled polycarbonate resin. The proportion of recycled polycarbonate resin in the polycarbonate resin (A) is preferably 30% or more, and more preferably 40% or more, 50% or more, 60% or more, 70% or more, or 80% or more, and it is also preferable for the recycled polycarbonate resin to be 100%. 【0029】 [LDS Additive (B)] The polycarbonate resin composition of the present invention contains a laser direct structuring (LDS) additive (B). When the LDS additive is irradiated with a laser beam, metal atoms are activated and a metal layer is formed on the surface. 【0030】 As an LDS additive (B), copper chromium oxide (CuCr ２ O ４ Examples of preferred materials include heavy metal composite oxides such as spinel; copper salts such as copper hydroxide phosphate, copper phosphate, copper sulfate, and copper thiocyanate; antimony-containing tin oxides such as antimony-doped tin oxide; and aluminum-doped zinc oxide. Of these, copper-chromium oxide or antimony-containing tin oxide are more preferred. Furthermore, copper-chromium oxide also functions as a black pigment, making it suitable for obtaining black molded products, and antimony-containing tin oxide can be used as a white pigment, so it can be applied as a white molded product, or in combination with other colored pigments to create desired color variations. 【0031】 The particle size of the LDS additive (B) is preferably 0.01 to 50 μm, and more preferably 0.05 to 30 μm. This particle size tends to result in better uniformity of the plated surface when plating is applied. 【0032】The content of the LDS additive (B) is 0.5 to 50 parts by mass per 100 parts by mass of polycarbonate resin (A), preferably 1 part by mass or more, more preferably 3 parts by mass or more, 5 parts by mass or more, 7 parts by mass or more, 8 parts by mass or more, 9 parts by mass or more, and especially preferably 10 parts by mass or more, and also preferably 45 parts by mass or less, more preferably 40 parts by mass or less, 35 parts by mass or less, 30 parts by mass or less, 25 parts by mass or less, and especially preferably 20 parts by mass or less. 【0033】 A molded product formed by injection molding or the like using a polycarbonate resin composition containing LDS additive (B) can be plated by irradiating its surface with a laser beam. For example, by irradiating in a desired pattern such as an antenna circuit, an activated metal layer is formed only in the area where the circuit pattern is to be formed on the surface of the molded product, and a surface structure advantageous for subsequent metal plating is generated. The molded product is then immersed in a plating solution and plated with copper, nickel, gold, etc. by electroplating (or electroplating) to form the circuit pattern. 【0034】 [Organosulfonic Acid Metal Salt (C)] The polycarbonate resin composition of the present invention contains an organic sulfonic acid metal salt (C). As the organic sulfonic acid metal salt (C), a non-phosphorus, non-halogen organic sulfonic acid metal salt flame retardant that does not contain phosphorus and / or halogens in its molecule is preferred. 【0035】 The metal in the metal salt is preferably an alkali metal or an alkaline earth metal, such as alkali metals like lithium (Li), sodium (Na), potassium (K), rubidium (Rb), and cesium (Cs); and alkaline earth metals like magnesium (Mg), calcium (Ca), strontium (Sr), and barium (Ba). Among these, sodium, potassium, and cesium are preferred, with sodium and potassium being particularly preferred. 【0036】 Preferred examples of the organic sulfonic acid metal salt (C) include metal salts of aromatic sulfonic acids, metal salts of aromatic sulfonamides (or sulfonimides), and metal salts of polystyrene sulfonic acid. 【0037】Specific examples of these include alkali metal salts of aromatic sulfonic acids having at least one aromatic group in their molecule, such as potassium 3-(phenylsulfonyl)benzenesulfonate (i.e., potassium diphenylsulfon-3-sulfonate), dipotassium diphenylsulfon-3,3'-disulfonate, sodium benzenesulfonate, potassium benzenesulfonate, cesium benzenesulfonate, sodium p-toluenesulfonate, potassium p-toluenesulfonate, cesium p-toluenesulfonate, sodium dodecylbenzenesulfonate, potassium dodecylbenzenesulfonate, cesium dodecylbenzenesulfonate, potassium styrenesulfonate, sodium polystyrenesulfonate, potassium polystyrenesulfonate, and cesium polystyrenesulfonate; and alkaline earth metal salts of aromatic sulfonic acids having at least one aromatic group in their molecule, such as magnesium p-toluenesulfonate, calcium p-toluenesulfonate, strontium p-toluenesulfonate, barium p-toluenesulfonate, magnesium dodecylbenzenesulfonate, and calcium dodecylbenzenesulfonate. 【0038】 Examples of metal salts of aromatic sulfonamides (or sulfonimides) include potassium salt of N-(p-tolylsulfonyl)-p-toluenesulfoimide, potassium salt of N-(N'-benzylaminocarbonyl)sulfanilimide, and potassium salt of N-(phenylcarboxyl)-sulfanilimide. 【0039】 Among the above, metal salts of p-toluenesulfonic acid, phenylsulfonylbenzenesulfonic acid, and polystyrenesulfonic acid are preferred as the organic sulfonic acid metal salt (C), and among these, alkali metal salts, especially sodium salts or potassium salts, are preferred. One type of organic sulfonic acid metal salt (C) may be used alone, or two or more types may be used in any combination and ratio. 【0040】The content of the organic sulfonic acid metal salt (C) is 0.01 to 1 part by mass per 100 parts by mass of polycarbonate resin (A), preferably 0.02 parts by mass or more, more preferably 0.03 parts by mass or more, 0.05 parts by mass or more, 0.08 parts by mass or more, or 0.1 parts by mass or more, and more preferably less than 1.0 part by mass, more preferably 0.7 parts by mass or less, 0.5 parts by mass or less, 0.4 parts by mass or less, 0.3 parts by mass or less, and especially preferably 0.2 parts by mass or less. 【0041】 It is preferable that the polycarbonate resin composition of the present invention substantially does not contain phosphorus-based flame retardants and / or halogen-based flame retardants. Here, "substantially contained" means that the amount of phosphorus-based flame retardants and / or halogen-based flame retardants, individually or in total, is preferably less than 0.05 parts by mass, more preferably less than 0.03 parts by mass, more preferably less than 0.01 parts by mass, less than 0.005 parts by mass, less than 0.001 parts by mass, and particularly preferably less than 0.0005 parts by mass, per 100 parts by mass of polycarbonate resin (A). 【0042】 [Flame retardant additive (D) with a 10% weight loss temperature of 350 to 600°C] The polycarbonate resin composition of the present invention contains a flame retardant additive (D) with a 10% weight loss temperature of 350 to 600°C. A flame retardant additive is used in combination with an organic sulfonic acid metal salt (C), which is used to make polycarbonate resin flame retardant, to produce a synergistic effect. The flame retardant additive (D) is used with a 10% weight loss temperature of 350 to 600°C, as it releases interlayer water and structural water at high temperatures such as flames, and its flame retardant ability is further improved by dehydration due to the cooling and dilution effect of the organic sulfonic acid metal salt (C), while also achieving heat resistance under high-temperature conditions during extrusion and molding. 【0043】The 10% weight loss temperature of the flame retardant aid (D) means the temperature at which the weight decreases by 10% from the initial weight when the flame retardant aid is heated from room temperature to 600 °C at a heating rate of 20 °C / min under a nitrogen atmosphere (200 mL / min) using a thermogravimetric analyzer. The 10% weight loss temperature of the flame retardant aid (D) is preferably 380 °C or higher, more preferably 400 °C or higher, still more preferably 430 °C or higher, and particularly preferably 450 °C or higher. By using a flame retardant aid having such a weight loss temperature, the flame retardant performance can be improved in the resin molded product without decomposition during extrusion or molding. The 10% weight loss temperature of the flame retardant aid (D) is preferably 590 °C or lower, more preferably 580 °C or lower, still more preferably 570 °C or lower, and particularly preferably 560 °C or lower. By using a flame retardant aid having such a weight loss temperature, structural water is released before the polycarbonate is completely decomposed during combustion, and the flame retardant effect is exerted. 【0044】 As the flame retardant aid (D), minerals containing aluminum or magnesium are preferred, for example, boehmite, halloysite, sepiolite, hydrotalcite, kaolin, montmorillonite, pyrophyllite, attapulgite, vermiculite are preferred, and particularly preferably boehmite, halloysite, sepiolite. 【0045】 Boehmite is a monohydrate of alumina represented by the composition formula: Al ２ O ３ ・1H ２ O and is preferred because it has particularly high heat resistance and chemical stability. Halloysite is a type of clay mineral classified as a phyllosilicate mineral and is typically represented by the chemical formula Al ２ Si ２ O ５ (OH) ４ It has a layered structure with weak bonds between unit layers and water molecules incorporated into the layers, and has a roll-shaped tube-like form. The mechanism by which halloysite exhibits flame retardancy as a flame retardant aid is that when exposed to high heat such as a flame, interlayer water and structural water are released, and due to its cooling and dilution effects, and the aluminol surface (-Al-OH ＋It is thought that the acid sites act as acid sites, suppressing the formation of low molecular weight components through the cleavage reaction of polycarbonate resin, thereby facilitating the formation of crosslinked structures through isomerization reactions and promoting good char formation. Sepiolite is a type of clay mineral classified as a phyllosilicate mineral, and its chemical formula is Mg ８ Si １２ O ３０ (OH) ４ (OH ２ ) ４ 8H ２ It is represented by O. Sepiolite is a fibrous mineral consisting of discontinuous layers, is porous, has a large specific surface area, and is characterized by high adsorption of water and other substances. The mechanism by which sepiolite exhibits flame retardancy is thought to be due to the release of interlayer water and structural water when exposed to high heat such as flames, producing a cooling and dilution effect, and the reinforcement of the formed char by the fibrous structure of sepiolite. 【0046】 Hydromagnesite is a hydrated basic carbonate mineral of magnesium, typically Mg ５ (CO ３ ) ４ (OH) ２ 4H ２ It is a mineral represented by O. Kaolin is also called kaolinite or kaolinite, and is typically composed of Al ２ Si ２ O ５ (OH) ４ It is a mineral represented by [this symbol]. Montmorillonite is a type of silicate mineral, typically (Na,Ca) ０．３３ (Al, Mg) ２ Si ４ O １０ (OH) ２ nH ２ It is represented by O. Pyrophyllite is a type of layered silicate mineral, typically Al ２ Si ４ O １０ (OH) ２ It is represented as [Mg(Al]. Attapulgite is a natural silicate mineral whose main components are hydrated magnesium and aluminum silicate, and is typically represented as [Mg(Al]. （０．５－１） Fe （０－０．５） ) ] Si ４ O１０ (OH) 4H ２ It is represented by O. Vermiculite is a type of silicate mineral formed from weathered biotite and phlogopite, and its chemical composition is Mg １－ｘ (Mg, Fe, Fe ３＋ , Al) ３ (Si, Al) ４ O １０ (OH) ２ 4H ２ It is represented by O. 【0047】 The flame retardant additive (D) described above, having a 10% weight loss temperature of 350 to 600°C, releases interlayer water and / or structural water. Due to its cooling and diluting effect, and by promoting strong char formation by the organic sulfonic acid metal salt (C), it achieves extremely good flame retardancy, allowing it to meet regulations such as PFAS and be an environmentally friendly material. Furthermore, the flame retardant additive (D) described above, having a 10% weight loss temperature of 350 to 600°C, remains stable and does not decompose at the molding temperature of the polycarbonate resin composition, and can decompose during combustion to release interlayer water and / or structural water. 【0048】 The flame retardant additive (D) is preferably surface-treated. Specific examples of surface treatment agents include silicone compounds such as organopolysiloxanes, coupling agents such as silane-based coupling agents, titanate-based coupling agents, and aluminum-based coupling agents, alcohols such as trimethylolethane, trimethylolpropane, and pentaerythritol, alkanolamines such as triethylamine, higher fatty acids such as stearic acid, fatty acid metal salts such as calcium stearate and magnesium stearate, polyacrylates such as sodium polyacrylate and ammonium polyacrylate, hydrocarbon lubricants such as polyethylene wax and liquid paraffin, basic amino acids such as lysine and arginine, polyglycerin, and their derivatives. Among these, silicone compounds such as organopolysiloxanes are preferred because surface treatment with silicone compounds improves heat resistance and dispersibility in polycarbonate resins, resulting in a greater flame retardancy improvement effect. 【0049】The content of the flame retardant additive (D) is 0.1 to 5.5 parts by mass per 100 parts by mass of polycarbonate resin (A), and good flame retardancy is achieved with such a small content. Below the lower limit, the flame retardancy is insufficient, and if the amount exceeds the upper limit, the decomposition of the polycarbonate progresses and it is difficult to achieve good flame retardancy. The content of the flame retardant additive (D) is preferably 0.11 parts by mass or more, more preferably 0.12 parts by mass or more, and also preferably 5.0 parts by mass or less, among which 4.0 parts by mass or less, 3.0 parts by mass or less, 2.5 parts by mass or less, 2.0 parts by mass or less, 1.8 parts by mass or less, 1.5 parts by mass or less, 1.3 parts by mass or less, 1.1 parts by mass or less, 1.0 part by mass or less, less than 1.0 part by mass, 0.9 parts by mass or less, 0.8 parts by mass or less, and especially less than 0.8 parts by mass is preferred. By keeping the above upper limit below, the decomposition of the polycarbonate resin is suppressed, and the load deflection temperature at a thickness of 4.0 mm tends to improve. When the flame retardant additive (D) is boehmite, the content is preferably 0.2 parts by mass or more, more preferably 0.4 parts by mass or more, and also preferably 5.0 parts by mass or less, more preferably 3.0 parts by mass or less, and particularly preferably 1.0 part by mass or less, per 100 parts by mass of polycarbonate resin (A). When the flame retardant additive (D) is halloysite, the content is preferably 0.11 parts by mass or more, more preferably 0.12 parts by mass or more, and also preferably 1.0 part by mass or less, more preferably 0.5 parts by mass or less, and particularly preferably 0.2 parts by mass or less, per 100 parts by mass of polycarbonate resin (A). When the flame retardant additive (D) is sepiolite, its content is preferably 0.11 parts by mass or more, more preferably 0.12 parts by mass or more, and preferably 3.0 parts by mass or less, more preferably 1.5 parts by mass or less, and particularly preferably 1.0 part by mass or less, per 100 parts by mass of polycarbonate resin (A). By using the above-described flame retardant additive (D), a good balance of flame retardancy and LDS performance can be achieved by using it in combination with an organic sulfonic acid metal salt in small amounts. 【0050】[Filler (E)] The polycarbonate resin composition of the present invention preferably further contains a filler (E), and its content is preferably 1 to 90 parts by mass per 100 parts by mass of polycarbonate resin (A). By including it in this way, the anti-sagging ability of the filler (E) can be balanced and an even higher level of flame retardancy can be achieved. The content of the filler (E) is more preferably 3 parts by mass or more, more preferably 5 parts by mass or more, 7 parts by mass or more, or 10 parts by mass or more, per 100 parts by mass of polycarbonate resin (A), and more preferably 80 parts by mass or less, more preferably 75 parts by mass or less, or 70 parts by mass or less. The filler (E) may contain only one type or two or more types. 【0051】 As the filler (E), an inorganic filler is preferred, and the inorganic filler may be a needle-shaped inorganic filler, a fibrous inorganic filler, or a plate-shaped inorganic filler, but a glass-based filler is preferred. The flame retardant additive (D) mentioned above is excluded as the filler (E). 【0052】 The filler (E) is preferably a glass-based filler, with glass fibers, glass flakes, glass beads, and glass balloons being preferred examples, and glass fibers and glass flakes being particularly preferred. The composition of the raw material glass is preferably alkali-free, and examples include E glass, C glass, S glass, R glass, etc., but E glass is preferably used. 【0053】In addition to the common circular cross-section, various irregular cross-sectional shapes may be used for the glass fibers. The glass fibers preferably have a number-average fiber length (cut length) of 0.5 to 10 mm, and more preferably 1.0 to 5.0 mm. The number-average fiber diameter of the glass fibers is preferably 4.0 μm or more, more preferably 4.5 μm or more, and even more preferably 5.0 μm or more, with an upper limit of preferably 25 μm or less, and more preferably 20 μm or less. Glass fibers having a flattened cross-section are also preferred, with an oblateness ratio of 1.5 to 8, and even more preferably 2 to 6. The average value of the major axis (width) of the fiber cross-section of the flattened cross-section glass fibers is preferably 10 to 50 μm, more preferably 12 to 40 μm, even more preferably 15 to 35 μm, and particularly preferably 18 to 30 μm. The number-average fiber length of the flattened cross-section glass fibers is preferably 0.5 to 20 mm, more preferably 1 to 15 mm, and even more preferably 2 to 10 mm. The ratio of the average fiber length to the average fiber diameter (aspect ratio) of the flattened cross-section glass fibers is preferably 2 to 120, more preferably 2.5 to 70, and even more preferably 3 to 50. Examples of such flattened cross-section glass fibers include the CSG series manufactured by Nitto Boseki Co., Ltd., with "CSG 3PA-830" being particularly noteworthy. Examples of glass flakes include scale-like flakes with a thickness of 1 to 20 μm and a side length of 0.05 to 1.0 mm. Ultra-thin glass flakes with an average thickness of 0.3 to 1 μm may also be used. Examples of such ultra-thin glass flakes include "Fine Flake" and "DURAFLAKE" manufactured by Nippon Sheet Glass Co., Ltd., with "MEG160 FY-M01" being particularly noteworthy. By using both the flattened cross-section glass fibers and ultra-thin glass flakes described above, a polycarbonate resin composition with superior dimensional stability and low anisotropy can be obtained. 【0054】It is also preferable that the glass-based filler is surface-treated with a surface treatment agent such as a silane coupling agent, such as γ-methacrylateoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, or γ-aminopropyltriethoxysilane. The amount of surface treatment agent applied is preferably 0.01 to 1% by mass of the glass-based filler. Furthermore, it is also preferable to use a glass-based filler that has been surface-treated with a lubricant such as a fatty acid amide compound or silicone oil, or an antistatic agent such as a quaternary ammonium salt. It is also preferable to use a glass-based filler that has been surface-treated with a surface treatment agent such as a silane coupling agent, and then further treated with a resin that has film-forming ability, such as an epoxy resin or urethane resin (also called a binding agent). 【0055】 [Release Agent] The resin composition of the present invention preferably contains a release agent. Examples of release agents include aliphatic carboxylic acids, esters of aliphatic carboxylic acids and alcohols, aliphatic hydrocarbon compounds with a number average molecular weight of 200 to 15,000, and polysiloxane-based silicone oils. 【0056】 Examples of aliphatic carboxylic acids include saturated or unsaturated aliphatic monovalent, divalent, or trivalent carboxylic acids. Here, aliphatic carboxylic acids also include alicyclic carboxylic acids. Among these, preferred aliphatic carboxylic acids are monovalent or divalent carboxylic acids having 6 to 36 carbon atoms, and more preferably aliphatic saturated monovalent carboxylic acids having 6 to 36 carbon atoms. Specific examples of such aliphatic carboxylic acids include palmitic acid, stearic acid, caproic acid, capric acid, lauric acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, melissic acid, tetrariacontanoic acid, montanic acid, adipic acid, and azelaic acid. 【0057】As the aliphatic carboxylic acid in the ester of an aliphatic carboxylic acid and an alcohol, for example, the same aliphatic carboxylic acid as described above can be used. On the other hand, as the alcohol, for example, saturated or unsaturated monohydric or polyhydric alcohols can be used. These alcohols may have substituents such as fluorine atoms or aryl groups. Among these, monohydric or polyhydric saturated alcohols having 30 or fewer carbon atoms are preferred, and aliphatic saturated monohydric alcohols or aliphatic saturated polyhydric alcohols having 30 or fewer carbon atoms are more preferred. Here, "aliphatic" is used as a term that also includes alicyclic compounds. 【0058】 Specific examples of such alcohols include octanol, decanol, dodecanol, stearyl alcohol, behenyl alcohol, ethylene glycol, diethylene glycol, glycerin, pentaerythritol, 2,2-dihydroxyperfluoropropanol, neopentylene glycol, ditrimethylolpropane, and dipentaerythritol. 【0059】 Furthermore, the above-mentioned esters may contain aliphatic carboxylic acids and / or alcohols as impurities. Also, the above-mentioned esters may be pure substances or mixtures of multiple compounds. Moreover, the aliphatic carboxylic acids and alcohols that combine to form a single ester may be used individually, or two or more may be used in any combination and ratio. 【0060】 Specific examples of esters of aliphatic carboxylic acids and alcohols include beeswax (a mixture mainly composed of myricyl palmitate), stearyl stearate, behenyl behenate, stearyl behenate, glycerin monopalmitate, glycerin monostearate, glycerin distearate, glycerin tristearate, pentaerythritol monopalmitate, pentaerythritol monostearate, pentaerythritol distearate, pentaerythritol tristearate, and pentaerythritol tetrastearate. 【0061】Examples of aliphatic hydrocarbons with a number-average molecular weight of 200 to 15,000 include liquid paraffin, paraffin wax, microwax, polyethylene wax, Fischer-Tropsch wax, and α-olefin oligomers having 3 to 12 carbon atoms. Alicyclic hydrocarbons are also included as aliphatic hydrocarbons. These hydrocarbons may also be partially oxidized. Among these, paraffin wax, polyethylene wax, or partially oxidized polyethylene wax are preferred, with paraffin wax and polyethylene wax being more preferred. The number-average molecular weight of the aliphatic hydrocarbons is preferably 5,000 or less. The aliphatic hydrocarbon may be a single substance, but a mixture of substances with various components and molecular weights can also be used as long as the main component is within the above range. 【0062】 Examples of polysiloxane-based silicone oils include dimethyl silicone oil, methylphenyl silicone oil, diphenyl silicone oil, and fluorinated alkyl silicone. 【0063】 Furthermore, the mold release agent described above may contain one type, or two or more types in any combination and ratio. 【0064】 The release agent content is preferably 0.1 to 2 parts by mass, more preferably 1 part by mass or less, and even more preferably 0.5 parts by mass or less, per 100 parts by mass of polycarbonate resin (A). If the release agent content is below the lower limit of the above range, the release effect is likely to be insufficient, and if it exceeds the upper limit of the above range, a decrease in hydrolysis resistance and mold contamination during injection molding may occur. 【0065】 [Stabilizer] The polycarbonate resin composition of the present invention preferably contains a stabilizer, and phosphorus-based stabilizers or phenol-based stabilizers are preferred. 【0066】Any known phosphorus-based stabilizer can be used. Specific examples include phosphorus oxoacids such as phosphoric acid, phosphonic acid, phosphorous acid, phosphinic acid, and polyphosphate; acidic pyrophosphate metal salts such as sodium acidic pyrophosphate, potassium acidic pyrophosphate, and calcium acidic pyrophosphate; phosphates of Group 1 or Group 2 metals such as potassium phosphate, sodium phosphate, cesium phosphate, and zinc phosphate; and organic phosphate compounds, organic phosphite compounds, and organic phosphonite compounds, with organic phosphate compounds and organic phosphite compounds being particularly preferred. 【0067】 Examples of organic phosphate compounds include octyl acid phosphate, 2-ethylhexyl acid phosphate, decyl acid phosphate, lauryl acid phosphate, octadecyl acid phosphate, oleyl acid phosphate, behenyl acid phosphate, phenyl acid phosphate, nonylphenyl acid phosphate, cyclohexyl acid phosphate, phenoxyethyl acid phosphate, alkoxypolyethylene glycol acid phosphate, and bisphenol. Examples of such organic phosphate compounds include hydroxya-1 acid phosphate, dimethyl acid phosphate, diethyl acid phosphate, dipropyl acid phosphate, diisopropyl acid phosphate, dibutyl acid phosphate, dioctyl acid phosphate, di-2-ethylhexyl acid phosphate, dioctyl acid phosphate, dilauryl acid phosphate, distearyl acid phosphate, diphenyl acid phosphate, bisnonylphenyl acid phosphate, etc., or their metal salts. Examples of such organic phosphate compounds include "ADEKA AX-71" manufactured by ADEKA Corporation and "JP-518Zn" manufactured by Johoku Chemical Industry Co., Ltd. 【0068】Examples of organic phosphite compounds include triphenyl phosphite, tris(mononylphenyl) phosphite, tris(mononyl / dinonylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite, monooctyldiphenyl phosphite, dioctylmonophenyl phosphite, monodecyldiphenyl phosphite, didecylmonophenyl phosphite, tridecyl phosphite, trilauryl phosphite, tristearyl phosphite, 2,2-methylenebis(4,6-di-tert-butylphenyl)octyl phosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol phosphite, distearylpentaerythritol diphosphite, and bis(2,4-dicumylphenyl)pentaerythritol phosphite. Examples of such organic phosphite compounds include "ADEKA Stab 1178," "ADEKA Stab 2112," "ADEKA Stab HP-10," "ADEKA Stab PEP-36," and "ADEKA Stab PEP-8" from ADEKA Corporation, "JP-351," "JP-360," and "JP-3CP" from Johoku Chemical Industry Co., Ltd., and "Irgaphos 168" from BASF. Note that the phosphorus stabilizer may contain one type, or two or more types in any combination and ratio. 【0069】 The phosphorus-based stabilizer content is typically 0.001 parts by mass or more, preferably 0.01 parts by mass or more, more preferably 0.03 parts by mass or more, per 100 parts by mass of polycarbonate resin (A), and typically 1 part by mass or less, preferably 0.7 parts by mass or less, more preferably 0.5 parts by mass or less. If the phosphorus-based stabilizer content is below the lower limit of the above range, the thermal stabilization effect may be insufficient, and if the phosphorus-based stabilizer content exceeds the upper limit of the above range, the effect may plateau and become uneconomical. 【0070】Examples of phenolic stabilizers include hindered phenolic antioxidants. Specific examples include pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, thiodiethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], N,N'-hexane-1,6-diylbis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide], 2,4-dimethyl-6-(1-methylpentadecyl)phenol, diethyl[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphate, 3,3',3”,5,5',5”,Hexa-tert-butyl-a,a',a”,(mesitylene-2,4,6- Examples include triyl)tri-p-cresol, 4,6-bis(octylthiomethyl)-o-cresol, ethylenebis(oxyethylene)bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate], hexamethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazine-2-ylamino)phenol, and 2-[1-(2-hydroxy-3,5-di-tert-pentylphenyl)ethyl]-4,6-di-tert-pentylphenyl acrylate. 【0071】Among these, pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate are preferred. Specific examples of such phenolic antioxidants include, for example, BASF's "Irganox 1010" and "Irganox 1076," and ADEKA's "ADEKA Stab AO-50" and "ADEKA Stab AO-60." Note that the phenolic stabilizer may contain only one type, or two or more types in any combination and ratio. 【0072】 The content of the phenolic stabilizer is usually 0.001 parts by mass or more, preferably 0.01 parts by mass or more, and usually 1 part by mass or less, preferably 0.5 parts by mass or less, per 100 parts by mass of polycarbonate resin (A). By setting the content of the phenolic stabilizer above the lower limit of the above range, the effect of the phenolic stabilizer can be sufficiently obtained, and by setting it below the upper limit of the above range, the effect does not plateau, making it economical. It is preferable to include both the phosphorus-based stabilizer and the phenolic stabilizer, as this further improves stability. 【0073】 [Additives, etc.] The polycarbonate resin composition of the present invention may contain other additives besides those mentioned above, such as ultraviolet absorbers, fluorescent whitening agents, pigments, dyes, plasticizers, and compatibilizers. These additives may be present in one or more types. 【0074】Furthermore, other resins besides polycarbonate resin (A) may be included. Examples of other resins include thermoplastic polyester resins such as polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate; styrene-based resins such as polystyrene resin, high-impact polystyrene resin (HIPS), acrylonitrile-styrene copolymer (AS resin), and acrylonitrile-butadiene-styrene copolymer (ABS resin); polyolefin resins such as polyethylene resin and polypropylene resin; polyamide resin; polyimide resin; polyetherimide resin; polyurethane resin; polyphenylene ether resin; polyphenylene sulfide resin; polysulfone resin; and polymethacrylate resin. When other resins besides polycarbonate resin (A) are included, the content is preferably 40 parts by mass or less, more preferably 30 parts by mass or less, and more preferably 20 parts by mass or less, 10 parts by mass or less, 5 parts by mass or less, 3 parts by mass or less, 2 parts by mass or less, and especially preferably 1 part by mass or less, per 100 parts by mass of polycarbonate resin (A). 【0075】 [Polycarbonate Resin Composition] The polycarbonate resin composition of the present invention has high flame retardancy and can achieve V-0 in the UL-94 test with a UL test piece that is 1.5 mm thick. 【0076】 The polycarbonate resin composition of the present invention is molded into a molded article. The method for manufacturing the molded article can be any molding method that is generally used for polycarbonate resin compositions. Examples include injection molding, ultra-high-speed injection molding, injection compression molding, two-color molding, hollow molding methods such as gas-assisted molding, molding using a heat-insulating mold, molding using a rapidly heated mold, foam molding (including supercritical fluid), insert molding, IMC (in-mold coating) molding, extrusion molding, sheet molding, thermoforming, rotational molding, lamination molding, press molding, blow molding, etc. Molding methods using a hot runner system can also be used. Among these, injection molding methods such as injection molding, ultra-high-speed injection molding, and injection compression molding are preferred. 【0077】[Molded Products] Examples of molded products include electrical and electronic equipment, office automation equipment, information terminal equipment, machine parts, home appliances, vehicle parts, building materials, various containers, leisure goods and miscellaneous items, and lighting equipment components. In particular, they are suitable for use in electrical and electronic equipment, office automation equipment, information terminal equipment, home appliances, and lighting equipment components. For example, they are suitable for use in components for secondary battery devices used indoors or outdoors, battery packs, storage batteries for electric bicycles, and components for enclosures used outdoors. 【0078】 A plating can be formed on the surface of a resin molded product by laser direct structuring. The shape of the resin molded product can be anything; it can be flat, partially or entirely curved, or have a complex three-dimensional shape. The resin molded product is irradiated with a laser, but there are no particular limitations on the laser; it can be appropriately selected from known lasers such as YAG lasers, FAYb lasers, carbon dioxide lasers, and excimer lasers, with YAG lasers and FAYb lasers being preferred. The wavelength of the laser is also not particularly specified. A preferred wavelength range is 200 nm to 1200 nm, and particularly preferred is 800 nm to 1200 nm. When the laser is irradiated, an activated metal layer is formed only in the irradiated area on the surface of the molded product, and surface roughening advantageous for subsequent metal plating is achieved. The molded product is immersed in a plating solution with or without a cleaning step, and plated with copper, nickel, gold, silver, palladium, preferably copper, by electroplating (or electroplating), and a metal layer is formed only in the laser-irradiated area. 【0079】 Furthermore, by applying laser direct structuring to the molded product of the present invention, it is possible to form circuits with a width of, for example, 1 mm or less, and even 150 μm or less (the lower limit is not specifically defined, but for example, 30 μm or more). Therefore, it is extremely effective for various mobile devices such as smartphones and tablet terminals, hearing aids, medical or dental treatment and surgical devices, various sensors, automotive devices such as steering wheel switches, or their components. 【0080】The present invention will be described in more detail below with reference to examples. However, the present invention is not limited to the following examples. The components used in the examples and comparative examples are shown in Table 1 below. 【0081】 【0082】 The 10% weight loss temperature was measured using a Hitachi High-Tech Science Corporation calorimeter "TG / DTA7200" under a nitrogen atmosphere. A 5 mg sample was heated from 40°C to 600°C at a heating rate of 20°C / min, and the temperature at which the weight loss reached 10% of the room temperature weight was measured. An aluminum pan was used as the sample pan. 【0083】 (Examples 1-11, Comparative Examples 1-8) <Production of Resin Composition Pellets> Of the above components, all except the filler (E) were blended in the proportions (parts by mass) shown in Tables 2 and 3 below, and mixed in a tumbler for 20 minutes. The mixture was then supplied to a twin-screw extruder "TEX30α" manufactured by Japan Steel Works, Ltd., which was equipped with one vent. The filler (E) was then added in the proportions (parts by mass) shown in Tables 2 and 3 below, supplied from the middle of the barrel by a side feeder. The mixture was kneaded under the conditions of a screw rotation speed of 200 rpm, a discharge rate of 25 kg / hr, and a barrel temperature of 280°C. The molten resin extruded in strand form was rapidly cooled in a water bath and pelletized using a pelletizer to obtain polycarbonate resin composition pellets. 【0084】<Measurement of Fluorine Content (Unit: ppm by mass)> The fluorine content in the resin composition was quantified by combustion ion chromatography. Specifically, the polycarbonate resin composition pellets obtained above were heated under argon atmosphere at 270°C for 10 minutes using an automated sample combustion device, the "AQF-100" manufactured by Mitsubishi Chemical Analytec Co., Ltd., and the amount of fluoride ions generated was quantified using the "ICS-90" manufactured by Nippon Dionex Co., Ltd. A calibration curve prepared from separately prepared standard substances was used to calculate the content. In Table 2-3, substances that were difficult to measure because they were below the detection limit of 5 ppm by mass when analyzed by combustion ion chromatography are marked as "ND" (not detected). Resin compositions that do not contain PFAS compounds are naturally marked as ND. The fluorine content is preferably less than 500 ppm by mass, more preferably 400 ppm by mass or less, 250 ppm by mass or less, 100 ppm by mass or less, and particularly preferably 5 ppm by mass or less (ND), which is the detection limit. 【0085】 <Evaluation of Flame Retardancy: UL-94 (1.5 mm thick)> The resin composition pellets obtained above were dried at 120°C for 4 hours. Then, using a Sumitomo Heavy Industries SE100DU injection molding machine, the pellets were injection molded under the conditions of cylinder temperature 300°C, mold temperature 110°C, and molding cycle 40 seconds to produce UL-94 test specimens with a length of 125 mm, a width of 13 mm, and a thickness of 1.5 mm. The obtained UL test specimens were tested in accordance with the UL-94 test defined by Underwriters Laboratories (UL) in the United States. The flammability results were classified as V-0, V-1, V-2, and HB from best to worst, and those that did not meet the specifications were classified as NG. 【0086】[Evaluation of LDS properties] The resin composition pellets obtained above were dried at 120°C for 4 hours, and then a 90 mm × 60 mm × 2 mm thick flat test piece was injection molded using an injection molding machine (Sumitomo Heavy Industries, Ltd. "SE100DU") under the conditions of cylinder temperature 280°C and mold temperature 100°C. A 55 mm × 40 mm area of ​​the obtained flat test piece was irradiated using a SUNX LP-Z SERIES laser irradiation device (FAYB laser with a wavelength of 1060 nm and a maximum output of 13 W) at output levels of 100, 80, 60, 40, and 20%, pulse period of 50 microseconds, and speeds of 4 m / s and 2 m / s. The subsequent plating process was carried out in a 65°C plating bath (set temperature 68°C) of an electroless MACDERMID COPPER100XB STRIKE for 20 minutes. Plating performance (LDS performance) was evaluated by visually measuring the thickness of the copper plated over 20 minutes, according to the following criteria: A: Excellent appearance (dark copper color and thick plating) B: Plating is present but slightly thin (at a practical level) C: No plating at all 【0087】 <Measurement of Flexural Modulus> The resin composition pellets obtained above were dried at 120°C for 4 hours. Then, using an injection molding machine (NEX80III) manufactured by Nissei Plastic Industrial Co., Ltd., injection molding was performed under the conditions of cylinder setting temperature 280°C, mold temperature 80°C, injection time 2 seconds, and molding cycle 50 seconds to injection mold an ISO multipurpose test specimen (4 mm thick). Using the obtained ISO multipurpose test specimen (4 mm thick), the flexural modulus (unit: GPa) was measured in accordance with ISO 178. 【0088】 [Measurement of Heat Resistance (Temperature Deflection under Load, DTUL)] Using the ISO multipurpose test specimen (4 mm thick) obtained above, the temperature deflection under load (DTUL, unit: °C) was measured under ISO 75A method under a load of 1.80 MPa. A temperature deflection of 135 °C or higher is preferred, more preferably 136 °C or higher, and among those, 137 °C or higher, 140 °C or higher, 142 °C or higher, 143 °C or higher, and especially 145 °C or higher is preferred. The evaluation results are shown in Tables 2 and 3 below. 【0089】 【0090】 【0091】 The polycarbonate resin composition of the present invention meets various regulations such as PFAS and is an environmentally friendly material, while possessing high flame retardancy and excellent LDS performance, making it suitable for use in various molded products.

Claims

1. A polycarbonate resin composition characterized by containing, per 100 parts by mass of polycarbonate resin (A), 0.5 to 50 parts by mass of laser direct structuring additive (B), 0.01 to 1 part by mass of organic sulfonic acid metal salt (C), and 0.1 to 5.5 parts by mass of flame retardant aid (D) having a 10% weight loss temperature of 350 to 600°C.

2. The polycarbonate resin composition according to claim 1, wherein the flame retardant additive (D) is a mineral having aluminum or magnesium.

3. The polycarbonate resin composition according to claim 1 or 2, wherein the flame retardant additive (D) is a silicate mineral.

4. The polycarbonate resin composition according to claim 1 or 2, wherein the flame retardant additive (D) is selected from boehmite, halloysite, sepiolite, hydromagnesite, kaolin, montmorillonite, pyrophyllite, attapulgite, and vermiculite.

5. The polycarbonate resin composition according to claim 1 or 2, wherein the content of the flame retardant additive (D) is 0.1 to 1.0 parts by mass per 100 parts by mass of the polycarbonate resin (A).

6. The polycarbonate resin composition according to claim 1 or 2, wherein the organic sulfonic acid metal salt (C) is an organic sulfonic acid metal salt that does not contain phosphorus or halogen.

7. The polycarbonate resin composition according to claim 6, wherein the organic sulfonic acid metal salt (C) is an aromatic sulfonic acid metal salt.

8. The polycarbonate resin composition according to claim 1 or 2, further comprising 1 to 90 parts by mass of filler (E) per 100 parts by mass of polycarbonate resin (A).

9. The polycarbonate resin composition according to claim 8, wherein the filler (E) is a glass-based filler.

10. The polycarbonate resin composition according to claim 9, wherein the filler (E) is glass fiber.

11. The polycarbonate resin composition according to claim 1 or 2, wherein the fluorine content measured by combustion ion chromatography is less than 500 ppm by mass.

12. The polycarbonate resin composition according to claim 1 or 2, wherein the UL-94 layer with a thickness of 1.5 mm is V-0.

13. Pellets of the polycarbonate resin composition according to claim 1 or 2.

14. A molded article of the polycarbonate resin composition according to claim 1 or 2.

15. A molded article of pellets according to claim 13.

16. A polycarbonate resin composition characterized by containing, per 100 parts by mass of polycarbonate resin (A), 0.5 to 50 parts by mass of laser direct structuring additive (B), 0.01 to 1 part by mass of organic sulfonic acid metal salt (C), and 0.1 to 5.5 parts by mass of a mineral (D) selected from one or more of boehmite, halloysite, sepiolite, hydromagnesite, kaolin, montmorillonite, pyrophyllite, attapulgite, and vermiculite.

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