KR20220046344A - Polycarbonate composition and molded articles comprising the same - Google Patents

Abstract

The present invention relates to a polycarbonate composition and a molded article comprising the same. The polycarbonate composition can provide a thin film with high transparency and high flame retardant using a non-halogen metal salt flame retardant having a specific structure which exhibits excellent dispersion even at the temperature lower than a boiling point of silicon oil or etc., which is essentially added, instead of a halogen metal salt flame retardant, which is a substance of very high concern (SVHC), to manufacture a thin film.

Description

Polycarbonate composition and molded article comprising the same

The present invention relates to a polycarbonate composition and a molded article comprising the same.

Polycarbonate is produced by polycondensation of an aromatic diol such as bisphenol A and a carbonate precursor such as phosgene, and has excellent impact strength, dimensional stability, heat resistance and transparency. Applicable to a wide range of fields.

In particular, as the weight reduction and thin film formation of various electrical and electronic product materials have recently been made, a higher level of flame retardancy is required for polycarbonate to be applied thereto.

In particular, in order to increase the flame retardancy of polycarbonate, research using fluorine-based flame retardants in addition to Br- or Cl-based flame retardants has been conducted in the past. is being strengthened In particular, there are considerable restrictions on products exported to Europe, and it is expected that regulations will be applied to all interior and exterior materials for small products in the future.

Accordingly, research on a material that can replace the flame retardant is being conducted, and an example is a sulfonic acid-based metal salt. Examples of the sulfonic acid-based metal salt include potassium diphenyl sulfonate (KSS). U.S. Patent No. 3,775,367 describes that it is possible to maintain excellent flame retardancy, heat resistance and impact strength of UL-94 V0 grade by using such a metal salt in polycarbonate. According to U.S. Patent No. 3,775,367, even when a molded article having a thin thickness of about 4 mm is prepared by using such a metal salt in a small content of 0.5 wt % or more based on the total weight of the composition, it can produce flame retardancy at the level of UL-94 V0. can be known However, in the case of manufacturing a molded article having a thinner thickness, it is necessary to increase the metal salt content in order to obtain a desired flame retardancy, but an excessive amount of the metal salt causes decomposition of the polycarbonate, and consequently, there is a problem that the flame retardancy is lowered.

U.S. Pat. No. 3,775,367

The present invention provides a polycarbonate composition capable of forming a thin film of high transparency and high flame retardancy, including a non-halogen metal salt flame retardant replacing the halogen metal salt flame retardant, which is a substance of very high concern (SVHC).

The present invention also provides a molded article comprising the polycarbonate composition.

Hereinafter, a polycarbonate composition according to a specific embodiment of the present invention and a molded article including the same will be described.

According to an embodiment of the invention, 100 parts by weight of polycarbonate, 0.06 to 0.19 parts by weight of a non-halogenated metal salt flame retardant represented by the following Chemical Formula 1, and 1.5 to 5 parts by weight of a silicone oil having a kinematic viscosity of 5 to 60 mm 2 /s at 25 ° C. , and a polycarbonate composition comprising 0.06 to 0.20 parts by weight of a silicone resin is provided.

[Formula 1]

In Formula 1,

Ar ¹ and Ar ² are each independently C _6-30 arylene,

L ¹ is -O-, -S-, -SO-, -SO ₂ - or -CO-,

A ¹ is C _1-30 alkyl or an alkali metal,

M ¹ is an alkali metal.

In the present specification, halogen may be fluorine, chlorine, bromine or iodine.

In the present specification, the alkali metal may be a monovalent cation of lithium, sodium, potassium, rubidium or cesium.

In the present specification, C _1-10 alkyl may be a straight chain, branched chain or cyclic alkyl. Specifically, C _1-10 alkyl is C _1-10 straight chain alkyl; or C _3-10 branched chain or cyclic alkyl. More specifically, C _1-10 alkyl may be methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, t-butyl, n-pentyl, iso-pentyl, neo-pentyl or cyclohexyl, etc. there is. However, the present invention is not limited thereto.

In the present specification, C _1-30 alkyl may be a straight chain, branched chain or cyclic alkyl. Specifically, C _1-30 alkyl is C _6-20 straight chain alkyl; or C _6-20 branched chain or cyclic alkyl. More specifically, C _1-30 alkyl is n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-undecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, n-heptadecyl or n-octadecyl, and the like. However, the present invention is not limited thereto.

In the present specification, C _1-10 alkoxy may be straight-chain, branched-chain or cyclic alkoxy. Specifically, C _1-10 alkoxy is C _1-10 straight chain alkoxy; or C _3-10 branched chain or cyclic alkoxy. More specifically, C _1-10 alkoxy is methoxy, ethoxy, n-propoxy, iso-propoxy, n-butoxy, iso-butoxy, t-butoxy, n-pentoxy, iso-pentoxy , neo-pentoxy or cyclohexoxy, and the like. However, the present invention is not limited thereto.

In the present specification, C _1-10 alkylene refers to a divalent functional group in which one more hydrogen radical is removed from the aforementioned C _1-10 alkyl.

In the present specification, C _3-15 cycloalkylene may be C _4-12 cycloalkylene or C _4-10 cycloalkylene. Specifically, C _3-15 cycloalkylene may be cyclobutylene, cyclopentylene, cyclohexylene, cycloheptylene, or cyclooctylene. However, the present invention is not limited thereto.

In the present specification, C _6-30 arylene may be monocyclic arylene or polycyclic arylene. Specifically, C _6-30 arylene is C _6-25 monocyclic or polycyclic arylene; or C _6-20 monocyclic or polycyclic arylene. More specifically, C _6-30 arylene may be phenylene, biphenylene, or terphenylene as monocyclic arylene, and may be naphthylene, anthracenylene, or phenanthrylene as polycyclic arylene. However, the present invention is not limited thereto.

The metal halide flame retardant is a high-risk material (Substance of Very High Concern: SVHC), and its use is not only being strengthened, but also does not mix well with polycarbonate at a temperature of less than 300 ℃, so it usually requires a processing temperature of 300 ℃ or higher.

As a result of the present inventors' research, silicone oil must be added in order to produce a high-flammability thin film. Since the boiling point of silicone oil, etc. is about 268 to 342 ℃, polycarbonate and polycarbonate at a temperature of 300 ℃ or more using a halogen metal salt flame retardant as a flame retardant When mixing, silicone oil evaporates, making it difficult to implement desired physical properties, or when the processing temperature is lowered, the halogen metal salt flame retardant is non-uniformly dispersed in the polycarbonate, thereby reducing transparency and flame retardancy.

As a result of continuous research by the present inventors to solve this problem, it is environmentally friendly because it does not contain halogen and has a unique structure that can be processed at a low temperature below the boiling point of silicone oil. When combined with silicone oil and silicone resin, polycarbonate It was confirmed through an experiment that it was possible to provide a thin film of high flame retardancy and high transparency, and the present invention was completed.

Hereinafter, the polycarbonate composition according to an embodiment of the present invention will be described in detail.

The polycarbonate composition may include a linear polycarbonate and a branched polycarbonate as polycarbonate.

The linear polycarbonate is a polymer including a repeating unit represented by the following Chemical Formula 2a, and is distinguished from a branched polycarbonate in that it does not include a branched repeating unit to be described later.

[Formula 2a]

In Formula 2a,

R ¹¹ to R ¹⁴ are each independently hydrogen, C _1-10 alkyl, C _1-10 alkoxy, or halogen;

Z is unsubstituted or substituted with phenyl C _1-10 alkylene, unsubstituted or substituted with C _1-10 alkyl C _3-15 cycloalkylene, -O-, -S-, -SO-, - SO ₂ -, or -CO-.

Specifically, the repeating unit represented by Formula 2a is formed by reacting an aromatic diol compound and a carbonate precursor.

In Formula 2a, preferably, R ¹¹ to R ¹⁴ are each independently hydrogen, methyl, chloro, or bromo.

Also preferably, Z is a straight or branched C _1-10 alkylene unsubstituted or substituted with phenyl, more preferably methylene, ethane-1,1-diyl, propane-2,2-diyl, butane-2,2-diyl, 1-phenylethane-1,1-diyl, or diphenylmethylene. Also preferably, Z is cyclohexane-1,1-diyl, -O-, -S-, -SO-, -SO ₂ - or -CO-.

As a non-limiting example, the repeating unit represented by Formula 2a may include bis(4-hydroxyphenyl)methane, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)sulfone, and bis(4-hydroxyl group). Phenyl)sulfoxide, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)ketone, 1,1-bis(4-hydroxyphenyl)ethane, bisphenol A, 2,2-bis(4- Hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis(4 -Hydroxy-3,5-dichlorophenyl) propane, 2,2-bis (4-hydroxy-3-bromophenyl) propane, 2,2-bis (4-hydroxy-3-chlorophenyl) propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 1,1-bis(4-hydroxyphenyl)- at least one aromatic diol compound selected from the group consisting of 1-phenylethane, bis(4-hydroxyphenyl)diphenylmethane, and a,ω-bis[3-(ο-hydroxyphenyl)propyl]polydimethylsiloxane can be derived from

The meaning of 'derived from an aromatic diol compound' means that a hydroxy group of the aromatic diol compound reacts with a carbonate precursor to form a repeating unit represented by Formula 2a.

As a non-limiting example, when bisphenol A as an aromatic diol compound and triphosgene as a carbonate precursor are polymerized, the repeating unit of Formula 2a may be represented by Formula 2a-1 below.

[Formula 2a-1]

Examples of the carbonate precursor include dimethyl carbonate, diethyl carbonate, dibutyl carbonate, dicyclohexyl carbonate, diphenyl carbonate, ditoryl carbonate, bis(chlorophenyl) carbonate, di-m-cresyl carbonate, dinaphthyl carbonate, At least one selected from the group consisting of bis(diphenyl) carbonate, phosgene, triphosgene, diphosgene, bromophosgene and bishaloformate may be used. Preferably, triphosgene or phosgene can be used.

The linear polycarbonate may have a weight average molecular weight (Mw) of 1,000 to 100,000 g/mol, preferably 10,000 to 60,000 g/mol, and more preferably 15,000 to 50,000 g/mol. More preferably, the weight average molecular weight (Mw) is 17,000 g/mol or more, 18,000 g/mol or more, or 20,000 g/mol or more. In addition, the weight average molecular weight is 43,000 g/mol or less, 42,000 g/mol or less, or 41,000 g/mol or less. In this case, the weight average molecular weight is a value converted to a standard polycarbonate (PC Standard) measured using a gel permeation chromatograph (GPC).

In addition, the linear polycarbonate has a melt index (MI) of 2 to 50 g/10min or 3 to 40 g/10min according to ASTM D1238 (300° C. and 1.2 kg load; measured for 10 minutes). It may be preferable in terms of physical property expression.

On the other hand, the aforementioned linear polycarbonate may be directly prepared according to a known polymerization method of a general polycarbonate using an aromatic diol compound and a carbonate precursor as starting materials.

As the polymerization method, an interfacial polymerization method may be used as an example, and in this case, polymerization reaction is possible at normal pressure and low temperature, and there is an advantage in that molecular weight control is easy. In addition, the interfacial polymerization may include, for example, a step of adding a coupling agent after pre-polymerization and then polymerization again, in this case polycarbonate having a high molecular weight can be obtained.

The polymerization temperature is preferably 0 °C to 40 °C, and the reaction time is preferably 10 minutes to 24 hours. In addition, it is preferable to maintain the pH at 9 or more or 11 or more during the reaction.

The solvent that can be used for the polymerization is not particularly limited as long as it is a solvent used for polymerization of polycarbonate in the art. For example, halogenated hydrocarbons such as dichloromethane and chlorobenzene may be used.

In addition, the polymerization is preferably performed in the presence of an acid binder, and an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide or an amine compound such as triethylamine and pyridine may be used as the acid binder.

In addition, in order to control the molecular weight of the polycarbonate during the polymerization, it is preferable to perform polymerization in the presence of a molecular weight modifier. C _1-20 alkylphenol may be used as the molecular weight modifier, and specific examples thereof include p-tert-butylphenol, p-cumylphenol, decylphenol, dodecylphenol, tetradecylphenol, hexadecylphenol, octadecylphenol, eico silphenol, docosylphenol, or triacontylphenol; and the like. The molecular weight regulator may be added before polymerization, during polymerization, or after polymerization. The molecular weight modifier is, for example, 0.01 parts by weight or more, 0.1 parts by weight or more, or 1 part by weight or more, and 10 parts by weight or less, 6 parts by weight or less, or 5 parts by weight when the total weight of the aromatic diol compound is 100 parts by weight. It is included in parts by weight or less, and a desired molecular weight can be obtained within this range.

In addition, in order to promote the polymerization reaction, a reaction such as a tertiary amine compound such as triethylamine, tetra-n-butylammonium bromide, or tetra-n-butylphosphonium bromide, a quaternary ammonium compound, or a quaternary phosphonium compound Accelerators may additionally be used.

The branched polycarbonate has a structure in which a plurality of the linear repeating units are connected as a branched repeating unit according to a branching agent included during polymerization, while including a linear repeating unit as a basic main chain, chain entanglement It has a reinforced structure. Accordingly, it is possible to have superior melt strength compared to the case where the linear polycarbonate is used alone, and thus, it is possible to exhibit better processability during blow molding.

The branched polycarbonate may include a repeating unit represented by Formula 2a as a linear repeating unit. More specifically, the branched polycarbonate may be a polycarbonate further including a trivalent or tetravalent repeating unit connecting the plurality of repeating units to each other in addition to the repeating unit represented by Formula 2a.

The description of the repeating unit represented by Formula 2a is the same as described above.

The trivalent or tetravalent repeating unit refers to a repeating unit formed by a branching agent added during polymerization of the aromatic diol compound and the carbonate precursor.

Specifically, the trivalent or tetravalent repeating unit is a branching agent that is a phenol derivative compound having three or four hydroxyl groups, for example, 1,1,1-tris(4-hydroxyphenyl)ethane, 1, 3,5-tris-(2-hydroxyethyl)cyanuric acid, 4,6-dimethyl-2,4,6-tris-(4-hydroxyphenyl)-heptane-2,2,2-bis[4 ,4'-(dihydroxyphenyl)cyclohexyl]propane, 1,3,5-trihydroxybenzene, 1,2,3-trihydroxybenzene, 1,4-bis-(4', 4'' -dihydroxytriphenylmethyl)-benzene, 2',3',4'-trihydroxyacetophenone, 2,3,4-trihydroxybenzoic acid, 2,3,4,-trihydroxybenzophenone, 2,4,4'-trihydroxybenzophenone, 2',4',6'-trihydroxy-3-(4-hydroxyphenyl)propiophenone, pentahydroxyflavone, 3,4,5- Trihydroxyphenylethylamine, 3,4-trihydroxyphenylethyl alcohol, 2,4,5-trihydroxypyrimidine, tetrahydroxy-1,4-quinone hydrate, 2,2',4,4' It may be derived from at least one branching agent selected from the group consisting of -tetrahydroxybenzophenone and 1,2,5,8-tetrahydroxyanthraquinone.

The meaning of 'derived from a branching agent' means that three or four hydroxyl groups of the branching agent react with a carbonate precursor and are polymerized with a plurality of repeating units represented by the formula (2a) to form a trivalent or tetravalent repeating unit means to form

Such a trivalent or tetravalent repeating unit may be represented by the following formula (2b):

[Formula 2b]

In Formula 2b, R ¹¹ to R ¹⁴ and Z are as defined in Formula 2a, and Q is a trivalent or tetravalent phenol derivative compound derived from a branching agent.

As a non-limiting example, when polymerized using bisphenol A as an aromatic diol compound, triphosgene as a carbonate precursor, and 1,1,1-tris(4'-hydroxyphenyl)ethane (THPE) as the branching agent, Formula 2b The repeating unit of may be represented by the following Chemical Formula 2b-1.

[Formula 2b-1]

The branched polycarbonate is 98 to 99.999 mol%, 98 to 99.99 mol%, or 98 to 99.9 mol% of the repeating unit represented by Formula 2a and 0.001 to 2 mol%, 0.01 to 2 mol%, or 0.1 to 2 mol% of the trivalent or tetravalent repeating unit. Within this range, a large amount of gel is formed due to the branched structure, and improvement of the physical properties of the elongational viscosity can be sufficiently implemented without a problem that the physical properties are deteriorated.

The branched polycarbonate may have a weight average molecular weight of 10,000 to 100,000 g/mol, preferably 20,000 to 50,000 g/mol. More preferably, the weight average molecular weight (Mw) is 10,000 g / mol or more, 21,000 g / mol or more, 22,000 g / mol or more, 23,000 g / mol or more, 24,000 g / mol or more, 25,000 g / mol or more, 26,000 g/mol or more, 27,000 g/mol or more, or 28,000 g/mol or more. In addition, the weight average molecular weight is 100,000 g/mol or less, 50,000 g/mol or less, or 45,000 g/mol or less. In this case, the weight average molecular weight is a value converted to a standard polycarbonate (PC Standard) measured using a gel permeation chromatograph (GPC).

In addition, the branched polycarbonate has a melt index (MI) of 1 to 50 g/10min or 1.5 to 40 g/10min according to ASTM D1238 (300° C. and 1.2 kg load; measured for 10 minutes). It may be preferable in terms of the expression of various physical properties.

The linear polycarbonate and the branched polycarbonate may be included in a weight ratio of 80:20 to 50:50 or 70:30 to 50:50. It is possible to maintain excellent processability within this range and to improve the effect of preventing dripping.

On the other hand, the above-described branched polycarbonate may be directly prepared according to a known polymerization method of a general polycarbonate using the aromatic diol compound, the carbonate precursor, and the branching agent as starting materials. As the polymerization method, an interfacial polymerization method may be used as an example, and the description of the interfacial polymerization refers to the above-mentioned bar.

In general, polycarbonate is relatively superior in mechanical properties, electrical properties, and weather resistance compared to other types of polymers, but has poor flame retardancy, so that it is required to improve flame retardancy in order to be applied to various fields requiring flame retardancy.

However, in addition to the Br- or Cl-based flame retardants added to the existing polycarbonate, a fluorine-based flame retardant was also added as a Substance of Very High Concern (SVHC). In addition, even if polycarbonate is manufactured as a thin film, silicone oil, which will be described later, must be added in order to realize excellent flame retardancy, and the boiling point of silicone oil is about 268°C to 342°C. However, in the case of a fluorine-based flame retardant, since it is dispersed in polycarbonate at a high temperature of 300 ° C. or higher, silicone oil is evaporated in this process, so that it is difficult to stably implement excellent flame retardancy and transparency.

Accordingly, as a result of the inventors' research, in the case of a non-halogen metal salt flame retardant having a unique structure represented by the following formula (1), it is environmentally friendly because it does not contain halogen, and is well dispersed in polycarbonate at a temperature lower than 300 ° C. And it was confirmed through an experiment that it is possible to provide a polycarbonate composition capable of producing a high-flammability thin film, and completed the present invention.

[Formula 1]

In Formula 1,

Ar ¹ and Ar ² are each independently C _6-30 arylene,

L ¹ is -O-, -S-, -SO-, -SO ₂ - or -CO-,

A ¹ is C _1-30 alkyl or an alkali metal,

M ¹ is an alkali metal.

As the non-halogenated metal salt flame retardant, one or two or more types of the non-halogenated metal salt flame retardant represented by Chemical Formula 1 may be used.

As an example, as the non-halogenated metal salt flame retardant represented by Chemical Formula 1, the non-halogenated metal salt flame retardant represented by the following Chemical Formula 1-1 and the non-halogenated metal salt flame retardant represented by the following Chemical Formula 1-2 was used at a low temperature of less than 300 ° C. It is possible to provide a thin-film polycarbonate molded article that is well dispersed in polycarbonate to suppress evaporation of silicone oil and exhibits excellent transparency and flame retardancy with high yield.

[Formula 1-1]

In Formula 1-1,

R ¹ is C _1-30 alkyl, M ¹ is an alkali metal,

[Formula 1-2]

In Formula 1-2,

M ¹ and M ² are the same or different alkali metals from each other.

In Formula 1-1, R ¹ may be C _6-20 alkyl, C _8-18 alkyl, or C _10-14 alkyl, and M ¹ may be a sodium or potassium cation.

In Formula 1-2, M ¹ and M ² are the same as each other, and may be a sodium or potassium cation.

More specifically, the non-halogenated metal salt flame retardant represented by Formula 1-1 may be sodium dodecyldiphenyl ether disulfonate (CAS No. 119345-04-9), and the non-halogenated metal salt flame retardant represented by Formula 1-2 may be dipotassium 3,3'-sulfonyldibenzenesulfonate (CAS No. 63316-33-6).

The non-halogenated metal salt flame retardant represented by Formula 1-1 and the non-halogenated metal salt flame retardant represented by Formula 1-2 are 90:10 to 50:50, 90:10 to 60:40, 90:10 to 70:30 or It is included in a weight ratio of 85:15 to 75:25 so that the polycarbonate composition is transparent and exhibits excellent flame retardancy even when the polycarbonate composition is prepared as a thin film of about 1.5 mm.

The non-halogen metal salt flame retardant may be included in an amount of 0.06 to 0.19 parts by weight, 0.06 to 0.18 parts by weight, 0.06 to 0.15 parts by weight, 0.08 to 0.18 parts by weight, or 0.10 to 0.15 parts by weight based on 100 parts by weight of the polycarbonate. In this range, excellent flame retardancy and transparency can be exhibited at the same time.

The polycarbonate composition according to the embodiment includes a silicone oil and a silicone resin in terms of improving flame retardancy.

The silicone oil may have a kinematic viscosity at 25° C. of 5 to 60 mm 2 /s. Specifically, the silicone oil has a kinematic viscosity (mm2/s) at 25°C of 6 or more, 7 or more, 8 or more, 9 or more, or 10 or more, and the kinematic viscosity (mm2/s) at 25°C is 50 or less, 40 or less, 30 or less, 25 or less, or 20 or less. When the kinematic viscosity of the silicone oil is adjusted to the above-mentioned range, excellent transparency and flame retardancy can be realized without a problem in that bubbles are generated due to high volatility.

Preferably, the silicone oil is a silicone polymer comprising phenyl trimethicone repeating units. Specifically, the silicone oil may be represented by the following formula (3).

[Formula 3]

In Formula 3,

R ¹⁵ and R ¹⁶ are each independently C _1-10 alkyl, C _1-10 alkenyl, or C _6-10 aryl;

R ¹⁷ is C _6-10 aryl,

n is an integer from 0 to 30,

m is an integer from 1 to 30;

More preferably, in Formula 3, R ¹⁵ and R ¹⁶ At least one of and R ¹⁷ may be phenyl.

For example, as the silicone oil, a compound represented by the following Chemical Formula 3-1 in which R ¹⁵ to R ¹⁷ of Chemical Formula 3 are all phenyl may be used.

[Formula 3-1]

In Formula 3-1, n and m are as defined in Formula 3 above.

In addition, the silicone oil may be included in an amount of 1.5 parts by weight or more, or 1.8 parts by weight or more, and 5.0 parts by weight or less, or 4.5 parts by weight or less, based on 100 parts by weight of the polycarbonate.

If the content of the silicone oil is too small, there may be a problem in that the flame retardancy is reduced, on the contrary, if the content of the silicone oil is too large, there may be a problem in that the transparency is reduced. Therefore, from this point of view, the silicone oil is preferably included in the content in the above-mentioned range.

On the other hand, the silicone resin may be included to improve the drip prevention flame retardancy. The silicone resin may be a network-type polyorganosiloxane resin including both phenyl and methyl substituents and having a solid phase property. That is, the silicone resin is distinguished from the silicone oil described above in that it is in a solid phase.

The silicone resin may be a copolymer of R ₃ SiO _1/2 units (M units) and SiO _4/2 units (Q units). Here, each R is independently C _1-10 alkyl or phenyl.

By using the copolymer of the above structure as the silicone resin, a dripping prevention effect may be exhibited.

In addition, the molar ratio (M/Q) of the R ₃ SiO _1/2 unit (M unit) to the SiO _4/2 unit (Q unit) may be 0.3 to 1. For example, as the silicone resin, a molar ratio (M/Q) of R ₃ SiO _1/2 units (M units) to SiO _4/2 units (Q units) of 0.5 may be used, such as Shinetsu’s KR-480. there is.

The silicone resin may be included in an amount of 0.06 parts by weight or more, or 0.08 parts by weight or more, and 0.20 parts by weight or less, or 0.18 parts by weight or less, based on 100 parts by weight of the polycarbonate.

If the content of the silicone resin is too small, there may be a problem in that the dripping prevention effect is lowered, and on the contrary, if the content of the silicone resin is too large, there may be a problem in that the transparency is lowered. Therefore, from this point of view, the silicone resin is preferably included in the content in the above-described range.

On the other hand, the polycarbonate composition according to the embodiment may further include an epoxy-based hydrolysis resistance to improve hydrolysis resistance.

As the epoxy-based hydrolysis resistance, a compound having a structure in which the epoxy group is fused to an aliphatic ring may be used, and as an example of a hydrolysis resistance agent having an aliphatic ring in which the epoxy is fused, Daicel's 2021P (3,4- epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate).

In addition, the epoxy-based hydrolysis resistant agent, based on 100 parts by weight of the polycarbonate, 0.05 parts by weight or more, or 0.06 parts by weight or more, or 0.08 parts by weight or more, 0.2 parts by weight or less, or 0.15 parts by weight or less, or 0.12 parts by weight may be included in sub-parts.

When the content of the epoxy-based hydrolysis-resistant agent is within the above-described range, it is possible to sufficiently achieve the hydrolysis-resistance effect without deteriorating the transparency and flame retardancy of the polycarbonate composition.

On the other hand, the polycarbonate composition according to the embodiment may further include a UV absorber in order to effectively block UV rays flowing in from the outside.

As the ultraviolet absorber, under the condition that the thickness of the specimen formed from the polycarbonate composition according to the embodiment is 3 mm, the light transmittance at a wavelength of 380 nm is 20% or less, preferably 10% or less. It can be used without any special restrictions.

Preferably, the ultraviolet absorber may be at least one selected from the group consisting of a benzotriazole compound, a benzophenone compound, an oxalanilide compound, a benzoic acid ester compound, and a triazine compound.

For example, as the ultraviolet absorber, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 2- (3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2- Hydroxy-5-(1,1,3,3,tetramethylbutyl)phenyl)benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)-5-benzo Triazole, 2-(3'-tert-butyl-2'-hydroxyphenyl-5'-methylphenyl)-5-benzotriazole, 2-(3'-sec-butyl-5'-tert-butyl-2 '-Hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-4'-octyloxyphenylphenyl)-5-benzotriazole or 2-(3',5'-di-tert-butyl-2 benzotriazole compounds such as 2-(2'-hydroxyphenyl)-benzotriazole-based compounds such as '-hydroxyphenyl)benzotriazole; 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2',4'-trihydroxy or 2'-hydroxy- benzophenone compounds such as 2-hydroxy benzophenone compounds having a 4,4'-dimethoxy functional group; 4-tert-butyl-phenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyl resorcinol, bis(4-tert-butyl-benzoyl)resorcinol, benzoyl resorcinol, 2,4 -di-tert-butylphenyl-3,5'-di-tert-butyl-4-hydroxybenzoate, hexadecyl 3,5-di-tert-butyl-4-4hydroxybenzoate, octadecyl 3, substituted benzoic acids such as 5-di-tert-butyl-4-hydroxybenzoate or 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate benzoic acid ester compounds such as compounds having an ester structure; Alternatively, a triazine compound having a 2,4,6-triphenyl-1,3,5-triazine skeleton may be used, but the present invention is not limited thereto.

In addition, the ultraviolet absorber may be included in an amount of 0.1 parts by weight or more, or 0.2 parts by weight or more and 0.5 parts by weight or less, or 0.4 parts by weight or less, based on 100 parts by weight of the polycarbonate.

When the ultraviolet absorber is within the above-mentioned range, it is possible to sufficiently achieve the weather resistance effect without lowering the transparency and flame retardancy of the polycarbonate composition.

On the other hand, the polycarbonate composition according to the embodiment, in addition to the above-mentioned components, if necessary, an impact modifier; flow modifiers; flame retardants such as phosphorus-based flame retardants; Surfactants; nucleating agent; coupling agent; filler; plasticizer; lubricant; antibacterial agents; release agent; heat stabilizer; antioxidants; UV Stabilizer; compatibilizer; coloring agent; antistatic agent; pigment; dyes; An additive such as a flame retardant may be further included.

The content of these additives may vary depending on the physical properties to be imparted to the composition. For example, the additive may be included in an amount of 0.01 to 10 parts by weight, respectively, based on 100 parts by weight of the polycarbonate.

However, in order to prevent the heat resistance, impact strength, chemical resistance, etc. of the polycarbonate composition from being lowered by the application of the additive, the total content of the additive is 20 parts by weight or less with respect to 100 parts by weight of the polycarbonate, or 15 parts by weight or less, or 10 parts by weight or less.

As described above, the polycarbonate composition according to the exemplary embodiment has a flame retardancy rating of V-0 measured on a specimen having a thickness of 1.5 mm based on the UL 94 standard, and may exhibit excellent flame retardancy.

More specifically, the flame retardancy grade V-O is, in accordance with UL 94 standards, after contacting a flame of 20 mm in height for each of 20 specimens having a thickness of 1.5 mm for 10 seconds, the combustion time t1 of the specimen is measured, and contacting for 10 seconds again The average t1 or average t2 of the 20 specimens obtained by measuring the combustion time t2 and the sparking time t3 of the specimen after The sum of the average t2 and t3 of is less than 30 sec, meaning that there is no ignition of the cotton wool by dripping while burning the 20 specimens.

In particular, the polycarbonate composition according to the exemplary embodiment may provide a high-flammability specimen with an excellent yield as most of the prepared specimens have a flame retardancy rating of V-0.

More specifically, in accordance with the UL 94 standard, after contacting each of 20 specimens with a thickness of 1.5 mm with a flame of a height of 20 mm for 10 seconds, the combustion time t1 of the specimen is measured, and the combustion time t2 of the specimen after contacting for 10 seconds again And when the sparking time t3 is measured, t1 or t2 among 20 specimens is 10 seconds or less, the sum of t1 and t2 is 10 seconds or less, the sum of t2 and t3 is 30 seconds or less, and individual specimens are burned There may be 17 or more, 18 or more, 19 or more, or 20 specimens of flame retardant class V-O without ignition of the cotton wool by dripping during loading.

In addition, in the polycarbonate composition according to the embodiment, the total burning time (sum of the average t1, t2 and t3 of the 20 specimens) measured for a specimen having a thickness of 1.5 mm based on the UL 94 standard is 35 seconds or less, 34 seconds or less, or 33 seconds or less.

The polycarbonate composition according to the exemplary embodiment has 0 drips measured under the UL 94 vertical evaluation condition, and may exhibit excellent drip resistance.

The polycarbonate composition according to one embodiment has a melt index of 7 g/10min or more, 10 g/10min or more, or 12 g/10min or more and 50 g/10min or less, measured under the conditions of 300 °C and 1.2 kg according to ASTM D1238, Excellent fluidity may be exhibited at 30 g/10min or less, 20 g/10min or less, or 16 g/10min or less.

The polycarbonate composition according to the embodiment has a haze measured for a specimen having a thickness of 3 mm according to ASTM D1003 of 0.01% or more and 1.00% or less, 0.98% or less, or 0.95% or less, indicating excellent transparency. there is.

The polycarbonate composition according to the embodiment has an impact strength of 750 J/m or more, 790 J/m or more, 800 J/m or more, measured at 23° C. according to ASTM D256 (1/8 inch, Notched Izod). It can exhibit excellent impact resistance of 810 J/m or more and 900 J/m or less, 880 J/m or less, or 860 J/m or less.

On the other hand, according to another embodiment of the invention, there is provided a molded article including the polycarbonate composition.

The molded article is an article obtained by molding by a method such as extrusion, injection, or casting using the above-described polycarbonate composition as a raw material. The molding method and its conditions may be appropriately selected and adjusted according to the type of the molded article.

As a non-limiting example, the molded article may be obtained by mixing and extrusion molding the polycarbonate composition to prepare pellets, then drying the pellets and injecting them.

In particular, the non-halogen metal salt flame retardant represented by Formula 1 is well dispersed in polycarbonate even at a temperature below the boiling point of silicone oil, so that the mixing and extrusion process of the polycarbonate composition may be performed at a temperature below the boiling point of silicone oil. Accordingly, it is possible to suppress the evaporation of the silicone oil, and it is possible to realize more stable physical properties. Specifically, the mixing and extrusion process of the polycarbonate composition is less than 300 ℃, 290 ℃ or less, 280 ℃ or less, or 275 ℃ or less, 250 ℃ or more, 260 ℃ or more, or 265 ℃ or more It is performed at a temperature of high transparency and high yield It is possible to provide a molded article of a thin film exhibiting high flame retardancy.

The temperature of the mixing and extrusion process of the polycarbonate composition is a temperature measured through a thermometer provided in the extruder barrel, the temperature at which the polycarbonate is melted, and is the temperature most affecting the actual polycarbonate (resin). In this specification, the above temperature is simply referred to as a resin melting temperature.

As the molded article is formed from the polycarbonate composition, it can exhibit excellent processability, flame retardancy and transparency, and can be preferably used as a material for electrical and electronic parts, lighting equipment parts, and the like.

The polycarbonate composition according to an embodiment of the present invention is excellent even at a temperature lower than the boiling point of silicone oil, which is essentially added to produce a high-flammability thin film instead of a metal halide flame retardant, which is a Substance of Very High Concern (SVHC). A highly transparent and highly flame retardant thin film can be provided by using a non-halogen metal salt flame retardant having a unique structure exhibiting dispersibility.

Hereinafter, the action and effect of the invention will be described in more detail through specific examples of the invention. However, this is presented as an example of the invention and the scope of the invention is not limited in any sense by this.

Example 1: Preparation of polycarbonate composition and specimen

60 parts by weight of LUPOY PC1300-30 (weight average molecular weight: 24,100 g/mol, BPA-PC) manufactured by LG Chem as a linear polycarbonate, LUPOY PC1600-03 manufactured by LG Chem as a branched polycarbonate (weight average Molecular weight: 41,000 g/mol, branched PC) 40 parts by weight, sodium dodecyldiphenyletherdisulfonate (CAS No. 119345-04-9) and dipotassium 3,3′-sulfonyldibenzenesulfonate (CAS No. 63316-33-6) in a weight ratio of 80:20, 0.10 parts by weight of a non-halogenated metal salt flame retardant (hereinafter, flame retardant C-1), a silicone oil with a kinematic viscosity at 25 ° C of 15 mm / s from ShinEstu of Japan 3 parts by weight of prepared KF-56 (hereinafter, silicone oil D-1), 0.10 parts by weight of KR-480 (hereinafter, silicone resin E) manufactured by ShinEstu of Japan as a silicone resin, Irgafos manufactured by BASF as an antioxidant -168 0.05 parts by weight and 0.05 parts by weight of pentaerythrityl tetraethylhexanoate (PETS) were mixed to prepare a polycarbonate composition.

Thereafter, the polycarbonate composition was fed to a twin-screw extruder (L/D = 36, Φ = 45, resin melting temperature: 270 ° C.) at a rate of 80 kg per hour to pelletize, and then JSW Co., Ltd. N-20C injection molding machine A specimen having a thickness of 1.5 mm was prepared by injection molding at a cylinder temperature of 270 ° C. and a mold temperature of 80 ° C.

Examples 2 to 5 and Comparative Examples 1 to 11: Preparation of polycarbonate composition and specimen

The same method as in Example 1, except that in Example 1, the types and contents of the flame retardant, silicone oil and silicone resin were changed as described in Table 1, and the resin melting temperature during extrusion was changed as described in Table 1 to prepare a polycarbonate composition and a specimen therefrom.

flame retardant silicone oil silicone resin Resin melting temperature (℃) C-1 C-2 C-3 D-1 D-2 D-3 E Example 1 0.10 3.00 0.10 270 Example 2 0.15 3.00 0.10 270 Example 3 0.10 2.00 0.10 270 Example 4 0.10 4.00 0.10 270 Example 5 0.10 3.00 0.15 270 Comparative Example 1 0.10 3.00 0.10 270 Comparative Example 2 0.10 3.00 0.10 310 Comparative Example 3 0.15 3.00 0.10 270 Comparative Example 4 0.30 3.00 0.10 270 Comparative Example 5 0.10 3.00 0.10 270 Comparative Example 6 0.10 3.00 0.10 270 Comparative Example 7 0.05 3.00 0.10 270 Comparative Example 8 0.20 3.00 0.10 270 Comparative Example 9 0.10 1.00 0.10 270 Comparative Example 10 0.10 3.00 0.05 270 Comparative Example 11 0.10 3.00 0.25 270

(Unit: parts by weight)

Flame retardant C-2: potassium perfluorobutane sulfonate as a halogen metal salt flame retardant (trade name HX-98 manufactured by HUBEI HENGXIN CHEMICAL CO., LTD)

Flame retardant C-3: potassium diphenylsulfone sulfonate (KSS-FR manufactured by Arichem) as a non-halogenated metal salt flame retardant

Silicone oil D-2: Silicone oil having a kinematic viscosity of 100 mm2/s at 25°C (KR-511 manufactured by ShinEstu, Japan)

Silicone oil D-3: Silicone oil having a kinematic viscosity of 125 mm2/s at 25°C (DC-550 manufactured by Dow Corning)

Test Example: Evaluation of physical properties of polycarbonate composition

The physical properties of the specimens prepared in Examples and Comparative Examples were measured by the method described below, and the results are shown in Table 4.

1) Melt Index: Measured according to ASTM D1238 (300° C., 1.2 kg conditions).

2) Impact strength: It was measured at 23° C. according to ASTM D256 (1/8 inch, Notched Izod).

3) Haze: It was measured using a haze meter for a 3.0 mm thick specimen according to ASTM D1003.

4) Number of drips: The number of drips (when sparking particles fall) was measured according to UL 94 Vertical Test protocol.

5) Flame retardancy (UL rating): The flame retardancy was evaluated according to the UL 94 standard. Specifically, 20 specimens having a thickness of 1.5 mm to evaluate the flame retardancy were prepared, and evaluated according to the method described below.

First, after contacting the specimen with a flame of 20 mm in height for 10 seconds, the combustion time (t1) of the specimen was measured, and the combustion pattern was recorded. Then, when the combustion was completed after the first contact, the combustion time (t2) and the glowing time (t3) of the specimen after contacting for another 10 seconds were measured, and the combustion pattern was recorded. After applying the same to 20 specimens, the average values of t1, t2, and t3 were obtained, and evaluated based on the criteria in Table 2 below.

Flame retardant grade V-0 V-1 V-2 Average burn time (average t1 or average t2 of 20 specimens) 10 seconds or less 30 seconds or less 30 seconds or less Total burning time of 20 specimens (sum of t1 and t2 of 20 specimens) 200 seconds or less 1000 seconds or less 1000 seconds or less Burning and sparking time after secondary contacting (sum of average t2 and average t3 of 20 specimens) 30 seconds or less 60 seconds or less 60 seconds or less Ignition of cotton wool by dripping doesn't exist doesn't exist has exist

6) Total burning time: Based on the UL 94 Vertical test standard in Table 2, the average values of t1, t2, and t3 were all added together.

7) Number of specimens of V-O grade: In accordance with the UL 94 standard, a combustion test was performed on each of 20 specimens with a thickness of 1.5 mm, and after evaluating the flame retardancy of individual specimens based on Table 3 below, V- among 20 specimens The number of grade 0 specimens was counted.

Specifically, after contacting the specimen with a flame of 20 mm in height for 10 seconds, the combustion time (t1) of the specimen was measured, and the combustion pattern was recorded. Then, when the combustion was completed after the first contact, the combustion time (t2) and the glowing time (t3) of the specimen after contacting for another 10 seconds were measured, and the combustion pattern was recorded. The values of t1, t2, and t3 of the individual specimens were measured as described above, and the number of specimens of the V-0 grade among 20 specimens was counted by evaluating the values in Table 3 below.

Flame-retardant grade V-0 V-1 V-2 Individual burn times (t1 or t2 for individual specimens) 10 seconds or less 30 seconds or less 30 seconds or less Total burning time of individual specimens (sum of t1 and t2 of individual specimens) 10 seconds or less 50 seconds or less 50 seconds or less Burning and sparking time after secondary contacting (sum of t2 and t3 of individual specimens) 30 seconds or less 60 seconds or less 60 seconds or less Ignition of cotton wool by dripping doesn't exist doesn't exist has exist

Melt Index (g/10min) Impact strength (J/m) Haze (%) Number of drips (EA) Total burn time (seconds) UL Rating
(class) Number of specimens in V-O grade (EA) Example 1 15.2 821 0.65 0 32 V-0 20 Example 2 15.3 823 0.95 0 29 V-0 20 Example 3 15.1 819 0.60 0 33 V-0 20 Example 4 15.8 823 0.71 0 29 V-0 20 Example 5 15.2 815 0.78 0 28 V-0 20 Comparative Example 1 15.2 817 7.21 2 40 V-2 9 Comparative Example 2 14.5 819 0.98 2 43 V-2 10 Comparative Example 3 15.1 815 1.85 5 48 V-2 0 Comparative Example 4 15.3 805 3.06 4 45 V-2 3 Comparative Example 5 15.0 831 2.35 4 46 V-2 2 Comparative Example 6 14.8 817 43.2 5 44 V-2 0 Comparative Example 7 15.2 820 0.31 2 39 V-2 16 Comparative Example 8 15.3 822 1.86 0 38 V-0 20 Comparative Example 9 15.2 814 0.53 2 40 V-2 12 Comparative Example 10 15.2 826 0.59 2 41 V-2 14 Comparative Example 11 15.3 820 1.12 0 34 V-0 20

Referring to Table 4, according to an embodiment of the present invention, a polycarbonate composition comprising a non-halogen metal salt flame retardant represented by Formula 1, a silicone oil having a specific viscosity, and a silicone resin in a predetermined mixing ratio has excellent transparency and flame retardancy It is confirmed that the

More specifically, it is confirmed that the polycarbonate compositions according to Examples 1 to 5 exhibit excellent flame retardancy in all specimens used for flame retardancy evaluation while exhibiting a haze of 1% or less.

On the other hand, when using a metal halide flame retardant as in Comparative Example 1 and controlling the resin melting temperature at the time of extrusion to a low temperature of 270 ° C. to suppress the evaporation of silicone oil, the polycarbonate does not mix well with the halogen metal salt flame retardant, resulting in transparency. It is confirmed that only about 9 of the specimens used for flame retardancy evaluation show excellent flame retardancy and, on average, exhibit a flame retardancy of V-2.

As in Comparative Example 2, when the resin melting temperature during extrusion is raised to 310 ° C., the haze is lowered because the halogen metal salt flame retardant is well mixed with the polycarbonate. It is confirmed that the average flame retardancy is V-2 only showing the flame retardancy and the same as in Comparative Example 1.

In Comparative Examples 3 and 4, a conventionally known non-halogen metal salt flame retardant was used to replace the halogen metal salt flame retardant, but when 0.15 parts by weight was used with respect to 100 parts by weight of polycarbonate, it exhibited a high haze of 1.85% and excellent flame retardancy among 20 specimens. There was not a single specimen showing, and even if the amount was increased to 0.30 parts by weight based on 100 parts by weight of polycarbonate, only the haze increased to 3.06%, and it was confirmed that the flame retardancy improvement effect was insignificant.

Comparative Examples 5 and 6 showed poor results in both transparency and flame retardancy by using silicone oil having a kinematic viscosity at 25° C. of more than 60 mm 2 /s.

As in Comparative Example 7, when less than 0.06 parts by weight of the non-halogenated metal salt flame retardant represented by Formula 1 was used, sufficient flame retardancy could not be exhibited, and as in Comparative Example 8, 0.19 parts by weight of the non-halogenated metal salt flame retardant represented by Formula 1 When used in excess, transparency was impaired.

In Comparative Examples 9 and 10, silicone oil and silicone resin were used below the numerical limit according to an embodiment of the present invention, respectively, and did not exhibit sufficient flame retardancy, and in Comparative Example 11, a silicone resin according to an embodiment of the present invention was used. A high haze of 1% or more was exhibited by exceeding the numerical limit.

Claims (20)

100 parts by weight of polycarbonate;
0.06 to 0.19 parts by weight of a non-halogenated metal salt flame retardant represented by the following formula (1);
1.5 to 5 parts by weight of a silicone oil having a kinematic viscosity at 25°C of 5 to 60 mm 2 /s, and
A polycarbonate composition comprising 0.06 to 0.20 parts by weight of a silicone resin:
[Formula 1]

In Formula 1,
Ar ¹ and Ar ² are each independently C _6-30 arylene,
L ¹ is -O-, -S-, -SO-, -SO ₂ - or -CO-,
A ¹ is C _1-30 alkyl or an alkali metal,
M ¹ is an alkali metal.
The polycarbonate composition of claim 1 , wherein the polycarbonate comprises a linear polycarbonate and a branched polycarbonate.
The polycarbonate composition according to claim 2, wherein the linear polycarbonate and the branched polycarbonate include a repeating unit represented by the following Chemical Formula 2a:
[Formula 2a]

In Formula 2a,
R ¹¹ to R ¹⁴ are each independently hydrogen, C _1-10 alkyl, C _1-10 alkoxy, or halogen;
Z is unsubstituted or substituted with phenyl C _1-10 alkylene, unsubstituted or substituted with C _1-10 alkyl C _3-15 cycloalkylene, -O-, -S-, -SO-, - SO ₂ -, or -CO-.
3. The method of claim 2, wherein the linear polycarbonate and the branched polycarbonate are bis(4-hydroxyphenyl)methane, bis(4-hydroxyphenyl)ether, bis(4-hydroxyphenyl)sulfone, bis(4- Hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)ketone, 1,1-bis(4-hydroxyphenyl)ethane, bisphenol A, 2,2-bis( 4-Hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 2,2-bis(4-hydroxy-3,5-dibromophenyl)propane, 2,2-bis (4-hydroxy-3,5-dichlorophenyl) propane, 2,2-bis (4-hydroxy-3-bromophenyl) propane, 2,2-bis (4-hydroxy-3-chlorophenyl) Propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 1,1-bis(4-hydroxyphenyl) )-1-phenylethane, bis(4-hydroxyphenyl)diphenylmethane, and at least one aromatic selected from the group consisting of a,ω-bis[3-(ο-hydroxyphenyl)propyl]polydimethylsiloxane A polycarbonate composition comprising repeating units derived from a diol compound.
The polycarbonate composition according to claim 3, wherein the branched polycarbonate comprises a trivalent or tetravalent repeating unit connecting the repeating unit represented by Formula 2a and a plurality of repeating units represented by Formula 2a to each other.
6. The method of claim 5, wherein the branched polycarbonate is 1,1,1-tris(4-hydroxyphenyl)ethane, 1,3,5-tris-(2-hydroxyethyl)cyanuric acid, 4,6 -Dimethyl-2,4,6-tris-(4-hydroxyphenyl)-heptane-2,2,2-bis[4,4'-(dihydroxyphenyl)cyclohexyl]propane, 1,3,5 -trihydroxybenzene, 1,2,3-trihydroxybenzene, 1,4-bis-(4', 4''-dihydroxytriphenylmethyl)-benzene, 2',3',4'- Trihydroxyacetophenone, 2,3,4-trihydroxybenzoic acid, 2,3,4,-trihydroxybenzophenone, 2,4,4'-trihydroxybenzophenone, 2',4',6 '-trihydroxy-3-(4-hydroxyphenyl)propiophenone, pentahydroxyflavone, 3,4,5-trihydroxyphenylethylamine, 3,4-trihydroxyphenylethyl alcohol, 2, 4,5-trihydroxypyrimidine, tetrahydroxy-1,4-quinone hydrate, 2,2',4,4'-tetrahydroxybenzophenone and 1,2,5,8-tetrahydroxyanthraquinone A polycarbonate composition comprising a repeating unit derived from at least one branching agent selected from the group consisting of.
The polycarbonate composition according to claim 1, wherein the polycarbonate comprises a linear polycarbonate and a branched polycarbonate in a weight ratio of 80:20 to 50:50.
The polycarbonate composition according to claim 1, wherein the non-halogenated metal salt flame retardant represented by Chemical Formula 1 includes a non-halogenated metal salt flame retardant represented by the following Chemical Formula 1-1 and a non-halogenated metal salt flame retardant represented by the following Chemical Formula 1-2:
[Formula 1-1]

In Formula 1-1,
R ¹ is C _1-30 alkyl, M ¹ is an alkali metal,
[Formula 1-2]

In Formula 1-2,
M ¹ and M ² are the same or different alkali metals from each other.
The polycarbonate composition according to claim 8, wherein the non-halogenated metal salt flame retardant represented by Formula 1-1 and the non-halogenated metal salt flame retardant represented by Formula 1-2 are included in a weight ratio of 90:10 to 10:90.
According to claim 1, wherein the silicone oil is represented by the following formula (3), polycarbonate composition:
[Formula 3]

In Formula 3,
R ¹⁵ and R ¹⁶ are each independently C _1-10 alkyl, C _1-10 alkenyl, or C _6-10 aryl;
R ¹⁷ is C _6-10 aryl,
n is an integer from 0 to 30,
m is an integer from 1 to 30;
According to claim 1, wherein the silicone resin is a copolymer of R ₃ SiO _1/2 units (M units) and SiO _4/2 units (Q units), wherein each R is independently C _1-10 alkyl or phenyl, Polycarbonate composition.
The polycarbonate composition according to claim 11, wherein the copolymer has a molar ratio (M/Q) of R ₃ SiO _1/2 units (M units) to SiO _4/2 units (Q units) of 0.3 to 1.
According to UL 94, after contacting a flame with a height of 20 mm for each of 20 specimens with a thickness of 1.5 mm for 10 seconds in accordance with UL 94 standards, the combustion time t1 of the specimen is measured, and after contacting for 10 seconds again, the The average t1 or average t2 of the 20 specimens obtained by measuring the burning time t2 and the sparking time t3 is 10 seconds or less, the sum of t1 and t2 of the 20 specimens is 200 seconds or less, the average t2 of 20 specimens and A polycarbonate composition, wherein the sum of t3 is 30 seconds or less, and there is no ignition of the cotton wool by dripping while burning the 20 specimens.
According to the UL 94 standard, after contacting each of 20 specimens with a thickness of 1.5 mm with a flame of a height of 20 mm for 10 seconds, the combustion time t1 of the specimen is measured, and after contacting for 10 seconds again, the combustion of the specimen By measuring time t2 and sparking time t3, among 20 specimens, t1 or t2 is 10 seconds or less, the sum of t1 and t2 is 10 seconds or less, the sum of t2 and t3 is 30 seconds or less, and individual specimens are 17 or more specimens without ignition of the cotton wool by dripping during combustion.
The polycarbonate composition according to claim 13, wherein the sum of the averages t1, t2, and t3 of the 20 specimens is 35 seconds or less.
The polycarbonate composition according to claim 1, wherein the number of drips measured under UL 94 vertical evaluation conditions is zero.
The polycarbonate composition according to claim 1, wherein the polycarbonate composition has a melt index of 7 to 50 g/10 min measured under conditions of 300° C. and 1.2 kg according to ASTM D1238.
The polycarbonate composition according to claim 1, wherein the haze measured on a specimen having a thickness of 3 mm according to ASTM D1003 is 0.01 to 1.00%.
The polycarbonate composition of claim 1 , wherein the polycarbonate composition has an impact strength of 750 to 900 J/m as measured at 23° C. according to ASTM D256 (1/8 inch, Notched Izod).
A molded article comprising the polycarbonate composition of claim 1 .