Polycarbonate Composition

Abstract

The present invention relates to a polycarbonate composition comprising, based on the total weight of the composition, the following components: A) 10% to 60% by weight of a copolycarbonate; B) 25% to 75% by weight of a homopolycarbonate; C) 3% to 13% by weight of a phosphorus-based flame retardant; D) 4% to 9% by weight of an impact modifier; and E) 2% to 14% by weight of polyesters, poly(1,4-butylene terephthalate), poly(1,4-cyclohexylene dimethylene 1,4-cyclohexane dicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyesters, and combinations thereof. The present invention also relates to molded articles made from the composition. The polycarbonate composition according to the present invention has a relatively high tocking index, a good combination of high heat resistance, good impact resistance, and flame retardancy.

Description

[Technical field]

[0001] The present invention relates to a polycarbonate (PC) composition, in particular to a polycarbonate composition having a high level of comparative tracking index, good flame retardancy, high heat resistance, and good impact resistance, and to a molded article made therefrom. [Background technology]

[0002] Polycarbonate is widely used in a wide variety of applications such as in the automotive, electrical and electronic fields due to its excellent optical, mechanical and heat resistance properties, as well as its excellent thermal processability.

[0003] Copolycarbonates, as a special type of polycarbonate, are widely used in the electrical and electronic fields, as housing materials for lighting and in applications where specific thermal and mechanical properties are required, such as hairdryers, applications in the automotive field, plastic covers, diffusion screens or waveguiding elements, and lamp covers or lamp bezels.

[0004] It is known that the heat distortion resistance of polycarbonates can be improved by introducing certain building blocks based on 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (bisphenol TMC) into the polycarbonate backbone. The copolycarbonates obtained in this way are also called high Tg polycarbonates. Furthermore, due to the relatively high glass transition temperature (Tg) of this type of copolycarbonate, its flowability is not high.

[0005] In recent years, there has been a trend in the field of electrical and electronic applications to miniaturize electronic and electrical devices. This has led to the adoption of more complex and compact designs of electrical devices that contain plastic housings or components. Therefore, safety-related properties of plastic materials such as Comparative Tracking Index (CTI) and flame retardancy have been required in the field of electronics and electrical applications.

[0006] For example, plastic materials require high levels of flame retardancy (e.g., V0 rating at 1.5 mm determined according to UL94-2015) and high CTI ranking (e.g., CTI=600V determined according to IEC60112:2011). However, it is well known that the comparative tracking index for standard polycarbonate resins is only around 250V or even lower.

[0007] Furthermore, the introduction of flame retardants into standard bisphenol A based polycarbonate is generally believed to be detrimental to the CTI performance of the final blend; the more flame retardant, the lower the CTI; further details can be found in "Flames of Flame Retardant Polymers: A Review", Vol. 1, No. 1, pp. 111-115, 2002.

[0008] In some applications, such as battery packages for electric vehicles, good heat resistance and good impact resistance are also desired in addition to a high comparative tracking index and good flame retardancy.

[0009] US Pat. No. 5,399,433 discloses a polymer blend of polybutylene terephthalate, brominated polystyrene, aromatic polycarbonate, and an agent for improving impact strength, which exhibits a combination of good flame retardancy and a high level of comparative tracking index.

[0010] No polymer composition has been reported that has a high level of comparative tracking index, good flame retardancy, high heat resistance, and good impact resistance.

[0011] Thus, there remains a need for polycarbonate compositions that have a good combination of comparative tracking index, flame retardancy, heat resistance, and impact resistance. [Prior art documents] [Patent documents]

[0012] [Patent Document 1] U.S. Patent No. 4,900,784 [Non-patent literature]

[0013] [Non-Patent Document 1] S. Sullalti et al., "Effect of phosphorus based flame retardants on UL94 and Comparative Tracking Index properties of poly(butylene terephthalate)", Polymer Degradation and Stability, 2012 Summary of the Invention

[0014] Accordingly, one object of the present application is to provide a polycarbonate composition having a good combination of comparative tracking index, flame retardancy, heat resistance, and impact resistance.

[0015] Another object of the present application is to provide articles that have a good combination of comparative tracking index, high heat resistance, good impact resistance, and flame retardancy.

[0016] In a first aspect, the present invention provides a polycarbonate composition comprising, based on the total weight of the composition, the following components: A) 10% to 60% by weight of a copolycarbonate, i) Formula (1): TIFF2025509533000001.tif42170 (in the formula, * indicates the position where formula (1) is attached to the polymer chain, R 1 are each independently hydrogen or C 1 ~C 4 is alkyl, R 2 are each independently 1 ~C 4 is alkyl, n is 0, 1, 2, or 3; ii) Equation (2): TIFF2025509533000002.tif33170 (in the formula, * indicates the position where formula (2) is attached to the polymer chain, R 3 are each independently hydrogen, a linear or branched C 1 ~C 10 is alkyl, and R 4 are each independently a linear or branched C 1 ~C 10 alkyl) units; and a copolycarbonate comprising B) a homopolycarbonate containing 25% to 75% by weight of units of formula (2) defined above; C) 7% by weight to 13% by weight of a phosphorus-based flame retardant; D) 4% to 9% by weight of an impact modifier; E) 2% to 14% by weight of a polyester selected from poly(1,4-butylene terephthalate), poly(1,4-cyclohexylene dimethylene 1,4-cyclohexane dicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, and combinations thereof; where The polycarbonate composition has a weight content of the unit of formula (1) of 8% by weight to 31% by weight.

[0017] As used herein, the weight content (C 1 / C / W ) is calculated as follows: C 1 / C / W =(C 1 / CO / M ×M w1 )×C co / c / w / (C 1 / CO / M ×M w1’ +C 2 / CO / M ×M w2 ) (In the formula, C 1 / C / W represents the weight content of the unit of formula (1) in the polycarbonate composition, C 1 / CO / M represents the molar content of units of formula (1) in the copolycarbonate, M w1 represents the molecular weight of the unit of formula (1), expressed in grams per mole, M w1’ represents the total molecular weight of the unit of formula (1) and -C=O-, expressed in grams per mole, C 2 / CO / M represents the molar content of units of formula (2) in the copolycarbonate, M w2 represents the molecular weight of the unit of formula (2), expressed in grams per mole, and C co / c / w represents the weight content of the copolycarbonate in the polycarbonate composition).

[0018] Comparative Tracking Index (CTI) means the highest voltage, determined in accordance with IEC 60112:2011, that five test specimens can withstand 50 drops of a particular electrolyte during the test period without experiencing tracking failure and sustained flame.

[0019] The inventors have unexpectedly found that the compositions according to the invention have a comparative tracking index of up to 600V as determined according to IEC 60112:2011, a flame retardancy level of V0 as determined according to UL 94-2015, good heat resistance with a Vicat temperature of 100°C or more as determined according to ISO 306:2013, and a flame retardancy level of 10 kJ / m2 as determined according to ISO 180 / A:2000. 2 It was found that the impact strength of the material was greater than 1000 MPa.

[0020] In a second aspect, the present invention provides a molded article made from a polycarbonate composition according to the first aspect of the invention.

[0021] In a third aspect, the present invention provides a method of making the above-mentioned molded article comprising injection molding, extrusion molding, blow molding or thermoforming a polycarbonate composition according to the first aspect of the invention.

[0022] Other subjects, as well as characteristics, aspects and advantages of the present invention will become even more apparent upon reading the following detailed description and examples. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Detailed Description of the Invention Hereinafter, unless otherwise indicated, the boundaries of ranges of values ​​are included within this range, in particular in the expressions "between ... to ..." and "to ...".

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In the event that a definition of a term herein conflicts with a meaning commonly understood by one of ordinary skill in the art to which this invention belongs, the definition set forth herein shall apply.

[0025] Throughout this application, the term "comprising" should be interpreted to encompass not only all specifically stated features but also any additional, unspecified features. As used herein, use of the term "comprising" also describes embodiments in which no features are present other than those specifically stated features (i.e., "consisting only of").

[0026] Unless otherwise specified, all numbers expressing quantities of ingredients or the like used in the detailed description and claims should be understood to be modified by the term "about."

[0027] Ingredient A According to a first embodiment, the polycarbonate composition according to the invention comprises a copolycarbonate.

[0028] In this application, copolycarbonates are i) Formula (1): TIFF2025509533000003.tif41170 (in the formula, * indicates the position where formula (1) is attached to the polymer chain, R 1 are each independently hydrogen or C 1 ~C 4 is alkyl, R 2 are each independently 1 ~C 4 is alkyl, n is 0, 1, 2, or 3; ii) Equation (2): TIFF2025509533000004.tif32170 (in the formula, * indicates the position where formula (2) is attached to the polymer chain, R 3 each independently represents H, linear or branched C 1 ~C 10 Alkyl, preferably H, linear or branched C 1 ~C 4 is alkyl, and R 4 are each independently a linear or branched C 1 ~C 10 Alkyl, preferably linear or branched C 1 ~C 4 alkyl) units; This refers to polycarbonates containing

[0029] The unit of formula (1) is represented by formula (1'): TIFF2025509533000005.tif34170 (in the formula, R 1 are each independently hydrogen or C 1 ~C 4 -alkyl, R 2 are each independently 1 ~C 4 -alkyl, wherein n is 0, 1, 2, or 3).

[0030] Preferably, the unit of formula (1) has the following formula (1a): TIFF2025509533000006.tif42170 (in the formula, * indicates the position where formula (1a) is attached to the polymer chain), i.e. the unit of formula (1) has the formula (1′a): It is derived from bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (BPTMC) having the formula TIFF2025509533000007.tif39170.

[0031] The unit of formula (2) is formula (2'): TIFF2025509533000008.tif30170 (in the formula, R 3 each independently represents H, linear or branched C 1 ~C 10 represents an alkyl group, R 4 are each independently a linear or branched C 1 ~C 10 The alkyl group may be derived from a diphenol having a substituent (e.g., aryl, aryloxy, arylalkyl).

[0032] Preferably, the unit of formula (2) is represented by the following formula (2a): TIFF2025509533000009.tif34170 (in the formula, * indicates the position where formula (2a) is attached to the polymer chain), i.e. the unit of formula (2) is bisphenol A, i.e. formula (2′a): Derived from diphenol TIFF2025509533000010.tif36170.

[0033] Preferably, the copolycarbonate comprises units derived from bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (BPTMC) and bisphenol A.

[0034] Preferably, the units of formula (1) in the copolycarbonate are derived from a diphenol of formula (1') and the units of formula (2) in the copolycarbonate are derived from a diphenol of formula (2').

[0035] Preferably, the units of formula (1) in the copolycarbonate are derived from bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (BPTMC) and the units of formula (2) in the copolycarbonate are derived from bisphenol A.

[0036] The diphenols of formula (1') and formula (2') are known and can be prepared by methods known from the literature (e.g., HJ Buysch et al., Ullmann's Encyclopedia of Industrial Chemistry, VCH, New York 1991, 5th Ed., Vol. 19, p. 348).

[0037] Preferably, based on the total number of moles of the units of formula (1) and formula (2), the molar content of the units of formula (1) in the copolycarbonate is 20 mol% to 80 mol%, and the molar content of the units of formula (2) in the copolycarbonate is 80 mol% to 20 mol%.

[0038] More preferably, the molar content of the units of formula (1) in the copolycarbonate is 30 mol% to 75 mol%, and the molar content of the units of formula (2) in the copolycarbonate is 70 mol% to 25 mol%, based on the total number of moles of the units of formula (1) and formula (2).

[0039] The copolycarbonates used in the compositions according to the invention are commercially available or may be prepared by methods known in the art.

[0040] For example, the copolycarbonates used in the compositions according to the invention can be prepared by an interfacial process. In particular, the diphenols of formulae (1') and (2') and any branching agent are dissolved in an aqueous alkaline solution and reacted with a carbonate source, such as phosgene, optionally dissolved in a solvent, in a two-phase mixture containing the aqueous alkaline solution, an organic solvent, and a catalyst, preferably an amine compound. The reaction procedure can also be carried out in a multi-stage process.

[0041] The process for preparing such copolycarbonates is in principle known as the two-phase interfacial process, for example in H. Schnell, Chemistry and Physics of Polycarbonates, Polymer Reviews, Vol. 9, Interscience Publishers, New York 1964, page 33 et seq., and Polymer Reviews, Vol. 10, "Condensation Polymers by Interfacial and Solution Methods", Paul W. Morgan, Interscience Publishers, New York 1965, Chapter VIII, page 325, so that the underlying conditions are well known to the person skilled in the art.

[0042] The concentration of the diphenol in the alkaline aqueous solution is 2% by weight to 25% by weight, preferably 2% by weight to 20% by weight, more preferably 2% by weight to 18% by weight, and even more preferably 3% by weight to 15% by weight. The alkaline aqueous solution is made of water in which an alkali metal or alkaline earth metal hydroxide is dissolved. Sodium hydroxide and potassium hydroxide are preferred.

[0043] The concentration of the amine compound is 0.1 mol % to 10 mol %, preferably 0.2 mol % to 8 mol %, particularly preferably 0.3 mol % to 6 mol %, and more particularly preferably 0.4 mol % to 5 mol %, based on the molar amount of the diphenol used.

[0044] The carbonate source is phosgene, diphosgene, or triphosgene, preferably phosgene. When phosgene is used, the solvent may be optionally omitted and the phosgene may be passed directly into the reaction mixture.

[0045] Tertiary amines such as triethylamine or N-alkylpiperidine may be used as catalysts. Suitable catalysts are trialkylamines and 4-(dimethylamino)pyridine. Triethylamine, tripropylamine, triisopropylamine, tributylamine, triisobutylamine, N-methylpiperidine, N-ethylpiperidine, and N-propylpiperidine are particularly suitable.

[0046] Suitable organic solvents are halogenated hydrocarbons such as methylene chloride, chlorobenzene, dichlorobenzene, trichlorobenzene or mixtures thereof, or aromatic hydrocarbons such as toluene or xylene. The reaction temperature can be from -5°C to 100°C, preferably from 0°C to 80°C, particularly preferably from 10°C to 70°C, very particularly preferably from 10°C to 60°C. It is also possible to prepare copolycarbonates by a melt transesterification process, in which diphenols are reacted with diaryl carbonates, generally diphenyl carbonate, in the melt in the presence of catalysts such as alkali metal salts, ammonium compounds or phosphonium compounds.

[0047] The melt transesterification process is described, for example, in Encyclopedia of Polymer Science, Vol. 10 (1969), Chemistry and Physics of Polycarbonates, Polymer Reviews, H. Schnell, Vol. 9, John Wiley and Sons, Inc. (1964), and in German Patent No. 1031512.

[0048] In the transesterification process, the aromatic dihydroxy compounds already described in the phase boundary process are transesterified in the melt with carbonic acid diesters using suitable catalysts and, optionally, further additives.

[0049] The reaction of the aromatic dihydroxy compounds with the carbonic acid diesters to give the copolycarbonates can be carried out batchwise or, preferably, continuously, for example in stirred tanks, thin film evaporators, falling film evaporators, stirred tank cascades, extruders, kneaders, simple disc reactors and high-viscosity disc reactors.

[0050] Preferably, the copolycarbonate is selected from block copolycarbonates and random copolycarbonates, more preferably, the copolycarbonate is selected from random copolycarbonates.

[0051] Advantageously, the copolycarbonates have a weight average molecular weight (Mw) ranging from 16000 g / mol to 40000 g / mol, preferably from 17000 g / mol to 32000 g / mol, determined by gel permeation chromatography (GPC) at 25° C. in methylene chloride with a UV-IR detector using polycarbonate standards.

[0052] An example of a commercially available copolycarbonate suitable for the composition according to the invention is the product sold under the name APEC™ by Covestro Polymer Co., Ltd. (China), which is a polycarbonate copolymer made from the copolymerization of carbonyl chloride with bisphenol A (BPA) and 3,3,5-trimethyl-1,1-bis(4-hydroxyphenyl)cyclohexane (BPTMC).

[0053] Advantageously, the copolycarbonate is present in an amount ranging from 10% to 60% by weight, better still from 12% to 45% by weight, and even better still from 15% to 45% by weight, relative to the total weight of the composition according to the invention.

[0054] Component B According to a first embodiment, the polycarbonate composition according to the invention comprises a homopolycarbonate comprising units of formula (2).

[0055] In this application, homopolycarbonate refers to a polycarbonate comprising units of formula (2) as defined above.

[0056] The unit of formula (2) is formula (2'): TIFF2025509533000011.tif29170 (in the formula, R 3 each independently represents H, linear or branched C 1 ~C 10 Alkyl, preferably linear or branched C 1 ~C 6 -alkyl, more preferably linear or branched C 1 ~C 4 alkyl, even more preferably H or methyl, and R 4 are each independently a linear or branched C 1 ~C 10 Alkyl, preferably linear or branched C 1 ~C 6 Alkyl, more preferably linear or branched C 1 ~C 4 -alkyl, even more preferably methyl).

[0057] Preferably, the unit of formula (2) is of formula (2'a): It is derived from the diphenol TIFF2025509533000012.tif35170, i.e., bisphenol A.

[0058] The homopolycarbonates used in the compositions according to the invention are commercially available or may be prepared by methods known in the art.

[0059] For example, homopolycarbonates can be produced by reference to the preparation methods described for component A.

[0060] Advantageously, the homopolycarbonates have a weight average molecular weight (Mw) in the range of 20000 g / mol to 32000 g / mol, preferably 20000 g / mol to 30000 g / mol, determined by gel permeation chromatography (GPC) at 25° C. in methylene chloride with a UV-IR detector using polycarbonate standards.

[0061] Commercially available homopolycarbonates suitable for use in the compositions according to the invention include Makrolon™ FS2000, Makrolon™ 2400, Makrolon™ 2600, and Makrolon™ 2800 sold by Covestro Polymer Co., Ltd. (China).

[0062] Advantageously, the homopolycarbonate is present in the polycarbonate composition according to the invention in an amount ranging from 25% to 75% by weight, preferably from 26% to 65% by weight and more preferably from 26% to 60% by weight relative to the total weight of the composition.

[0063] Component C According to a first embodiment, the polycarbonate composition according to the invention comprises a phosphorus-based flame retardant.

[0064] Preferably, the phosphorus-based flame retardants suitable for use in the compositions according to the invention are selected from monomeric and oligomeric phosphate and phosphonate esters, and mixtures thereof.

[0065] Preferred monomeric and oligomeric phosphate and phosphonate esters are represented by formula (3): TIFF2025509533000013.tif40170 (in the formula, R 1 , R 2 , R 3 , and R 4 are each independently an optionally halogenated C 1 ~C 8 Alkyl, C 5 ~C 6Cycloalkyl, C 6 ~C 20 Aryl or C 7 ~C 12 aralkyl, each of which is an alkyl, preferably C 1 ~C 4 Optionally substituted by alkyl and / or halogen, preferably chlorine, bromine, n's are each independently 0 or 1; q represents a number ranging from 0 to 30, and X is a phosphorus compound represented by the formula (I) in which X represents a mononuclear or polynuclear aromatic residue having 6 to 30 carbon atoms, or a linear or branched aliphatic residue having 2 to 30 carbon atoms, which may be substituted with OH and may contain up to 8 ether bonds.

[0066] Preferably, R 1 , R 2 , R 3 , and R 4 are independent of each other, 1 ~C 4 Alkyl, phenyl, naphthyl, or phenylC 1 ~C 4 alkyl, where the aromatic group R 1 , R 2 , R 3 , and R 4 are themselves halogen and / or alkyl groups, preferably chlorine, bromine and / or C 1 ~C 4 It may be substituted with alkyl. Particularly preferred aryl residues are cresyl, phenyl, xylenyl, propylphenyl, or butylphenyl, as well as the corresponding brominated and chlorinated derivatives thereof.

[0067] Preferably, X in formula (3) represents a mononuclear or polynuclear aromatic residue having 6 to 30 carbon atoms.

[0068] More preferably, X is derived from resorcinol, hydroquinone, bisphenol A, or diphenylphenol. Especially preferably, X is derived from bisphenol A.

[0069] Preferably, n is equal to one.

[0070] Preferably, q represents a number from 0 to 20, particularly from 0 to 10, and when a mixture of phosphorus compounds of general formula (3) is used, the average value is 0.8 to 5.0, preferably 1.0 to 3.0, more preferably 1.05 to 2.00, and particularly preferably 1.08 to 1.60.

[0071] Phosphorus compounds of formula (3) are in particular tributyl phosphate, triphenyl phosphate, tricresyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, diphenyl-2-ethyl cresyl phosphate, tri(isopropylphenyl) phosphate, resorcinol bridged oligophosphates and bisphenol A bridged oligophosphates. The use of oligomeric phosphate esters of formula (3) derived from bisphenol A is particularly preferred.

[0072] The most preferred phosphorus compound of formula (3) is represented by formula (4): It is an oligophosphate based on bisphenol A, i.e. bisphenol-A bis(diphenyl phosphate), according to TIFF2025509533000014.tif44170.

[0073] The phosphorus compounds of formula (3) are known (see, for example, EP-A-0 363 608, EP-A-0 640 655) or can be prepared in an analogous manner by known methods (see, for example, Ullmanns Enzyklopadie der technischen Chemie, vol. 18, pp. 301 ff. 1979; Houben-Weyl, Methoden der organischen Chemie, vol. 12 / 1, p. 43; Beilstein vol. 6, p. 177).

[0074] Advantageously, the phosphorus-based flame retardant is present in the composition according to the invention in an amount ranging from 7% to 13% by weight, and better still from 8% to 11% by weight, relative to the total weight of the composition.

[0075] Component D According to a first embodiment, the polycarbonate composition of the present invention comprises an impact modifier.

[0076] There are no particular limitations on the impact modifier.

[0077] Impact modifiers commonly used in polycarbonate compositions can be used in the polycarbonate compositions according to the present invention.

[0078] Preferably, the impact modifier is D1) 5% to 95% by weight, preferably 8% to 90% by weight, in particular 20% to 85% by weight, of at least one vinyl monomer, D2) 95% by weight to 5% by weight, preferably 92% by weight to 10% by weight, in particular 80% by weight to 15% by weight of one or more graft bases having a glass transition temperature of less than 10 ° C., preferably less than 0 ° C., in particular preferably less than -20 ° C. The rubber modified vinyl (co)polymers are selected from the group consisting of:

[0079] The weight percent is calculated based on the weight of the rubber modified vinyl (co)polymer.

[0080] The glass transition temperature was determined by dynamic differential scanning calorimetry (DSC) at a heating rate of 10 K / min according to standard DIN EN 61006 as T g was defined as the midpoint temperature (tangent method) and measured.

[0081] The at least one vinyl monomer D1 is preferably D1.1) 50% to 99% by weight, preferably 65% ​​to 85% by weight, in particular 75% to 80% by weight of vinyl aromatic compounds and / or vinyl aromatic compounds substituted on the nucleus (styrene, α-methylstyrene, p-methylstyrene, etc.) and / or methacrylic acid (C 1 ~C 8 )-alkyl esters (methyl methacrylate, ethyl methacrylate, etc.) D1.2) 1% to 50% by weight, preferably 15% to 35% by weight, particularly 20% to 25% by weight of vinyl cyanide (unsaturated nitrile such as acrylonitrile and methacrylonitrile) and / or (meth)acrylic acid such as methyl methacrylate, n-butyl acrylate, t-butyl acrylate, etc. (C 1 ~C 8 )-alkyl esters, and / or derivatives of unsaturated carboxylic acids (such as anhydrides and imides), such as maleic anhydride and N-phenyl-maleimide, It is a mixture of.

[0082] The weight percentages are calculated based on the weight of vinyl monomer D1.

[0083] Preferred monomers D1.1 are selected from styrene, α-methylstyrene and methyl methacrylate. Preferred monomers D1.2 are selected from acrylonitrile, maleic anhydride and methyl methacrylate. More preferably, monomer D1.1 is styrene and monomer D1.2 is selected from acrylonitrile and methyl methacrylate.

[0084] Examples of graft bases D2 include diene rubbers, and acrylate rubbers, and ethylene / vinyl acetate rubbers.

[0085] Preferred graft bases D2 are selected from diene rubbers, for example based on butadiene and isoprene, or mixtures of diene rubbers, or copolymers of diene rubbers or mixtures thereof with further copolymerizable monomers (for example according to D1.1 and D1.2), provided that the glass transition temperature of component D2 is below 10°C, preferably below 0°C, particularly preferably below -20°C.

[0086] Particularly preferred graft bases D2 are selected from pure polybutadiene rubbers or acrylate hybrid rubbers.

[0087] Particularly preferred rubber modified vinyl (co)polymers are, for example, ABS (acrylonitrile-butadiene-styrene), MBS (methyl methacrylate-butadiene-styrene).

[0088] The rubber modified vinyl (co)polymers may be made by free radical polymerization, for example by emulsion, suspension, solution or bulk polymerization, preferably by emulsion or bulk polymerization, especially by emulsion polymerization.

[0089] Commercially available examples of rubber modified vinyl (co)polymers that can be used in the present invention include: ABS 8391 available from SINOPEC Shanghai Gaoqiao Co., Ltd. having a polybutadiene rubber content of 10% to 15% by weight based on the ABS polymer; ABS HRG powder P60 (average particle size d ) available from INEOS Styrolution was produced by emulsion polymerization of a mixture of 42% to 45% by weight, based on the ABS polymer, 27% by weight acrylonitrile and 73% by weight styrene in the presence of 55% to 58% by weight, based on the ABS polymer, of crosslinked polybutadiene rubber. 50 is 0.3 μm), Kane Ace M732, available from Kaneka Corporation, Japan; Examples include:

[0090] Advantageously, the impact modifier is present in the polycarbonate composition according to the invention in an amount ranging from 4% to 9% by weight relative to the total weight of the polycarbonate composition.

[0091] Component E According to a first aspect, the polycarbonate composition of the present invention comprises a polyester selected from poly(1,4-butylene terephthalate), poly(1,4-cyclohexylene dimethylene 1,4-cyclohexane dicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, and combinations thereof.

[0092] Poly(1,4-butylene terephthalate) Poly(1,4-butylene terephthalate), also known as (PBT), is obtained by polycondensation of terephthalic acid with a glycol component that includes an alkylene glycol having four carbon atoms (1,4-butanediol).

[0093] The intrinsic viscosity of the polybutylene terephthalate resin is not particularly limited.

[0094] Advantageously, the intrinsic viscosity (IV) of the polybutylene terephthalate resin is 0.60 dL / g to 1.2 dL / g, preferably 0.65 dL / g to 0.9 dL / g. The intrinsic viscosity (IV) of the polybutylene terephthalate resin can be measured, for example, in o-chlorophenol at a temperature of 35°C.

[0095] It is possible to adjust the intrinsic viscosity by blending polybutylene terephthalate resins having different intrinsic viscosities. For example, a polybutylene terephthalate resin having an intrinsic viscosity of 1.0 dL / g and a polybutylene terephthalate resin having an intrinsic viscosity of 0.7 dL / g can be blended to produce a polybutylene terephthalate resin having an intrinsic viscosity of 0.9 dL / g.

[0096] Poly(1,4-cyclohexylene dimethylene 1,4-cyclohexane dicarboxylate) Poly(1,4-cyclohexylene dimethylene 1,4-cyclohexane dicarboxylate), also known as PCCD or poly(1,4-cyclohexene dimethanol-1,4-dicarboxylate), has the formula: TIFF2025509533000015.tif has a repeating unit of 25170.

[0097] The PCCD used can be standard PCCD available from Eastman Chemical. This PCCD can be prepared by dissolving in CHCl at 23° C. 3 The molecular weight is 41000 g / mol to 60000 g / mol as determined by GPC using hexane as the solvent.

[0098] Advantageously, the PCCD has an intrinsic viscosity of between 0.8 dL / g and 1.1 dL / g, preferably between 0.82 dL / g and 1.0 dL / g, measured in 60 / 40 (w / w) phenol / tetrachloroethane at a concentration of 0.5 g / 100 ml at 25° C.

[0099] Poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester Poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyesters have the structure: TIFF2025509533000016.tif22170 and 1,4-cyclohexanedimethylene terephthalate repeat units having the structure: TIFF2025509533000017.tif32170, 2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate repeating units having the formula: * indicates the position at which the unit is attached to the polymer chain.

[0100] Poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester can be obtained by polymerization of 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCBD), terephthalic acid (or dimethyl terephthalate), and 1,4-cyclohexanediol.

[0101] Due to the difference in the position of the hydroxyl group, monomeric TMCBD has cis and trans isomers. The C4 ring of cis-TMCBD is non-planar and has a dihedral angle of 17.5° in crystals, while trans-TMCBD has a dihedral angle of 0° and has a symmetric structure, making the C4 ring very stable.

[0102] Preferably, the copolyester comprises, by weight based on the weight of the copolyester, 10% to 90% cyclohexanedimethylene terephthalate repeat units and 10% to 90% 2,2,4,4-tetramethylcyclobutylene terephthalate repeat units.

[0103] Advantageously, the copolyesters have a melt volume rate (MVR) measured according to ISO 1133-1:2011 at 260° C. under a load of 5 kg, between 5 g / mol and 30 g / mol, preferably between 8 g / mol and 25 g / mol, more preferably between 10 g / mol and 20 g / mol.

[0104] Advantageously, the polyester is present in the polycarbonate composition according to the invention in an amount ranging from 2% to 14% by weight, preferably from 2% to 13% by weight, relative to the total weight of the polycarbonate composition.

[0105] Additives In addition to the above-mentioned components A to E, the polycarbonate composition according to the present invention may optionally contain one or more additives conventionally used in polycarbonate compositions, such as fillers, carbon black, UV stabilizers, IR stabilizers, heat stabilizers, antistatic agents, pigments, colorants, lubricants, mold release agents (e.g., pentaerythritol tetrastearate), antioxidants, flow improvers, anti-dripping agents (e.g., poly(tetrafluoroethylene)), etc.

[0106] Such additives are described, for example, in WO 99 / 55772, pages 15 to 25, and in "Plastics Additives", R. Gachter and H. Muller, Hanser Publishers 1983.

[0107] One skilled in the art can select the type of additive so as not to adversely affect the desired properties of the polycarbonate composition according to the present invention.

[0108] The total amount of additives is preferably at most 4% by weight, preferably at most 1.8% by weight, relative to the total weight of the polycarbonate composition according to the invention.

[0109] Preferably, the polycarbonate composition according to the invention comprises, relative to the total weight of the composition, the following components: A) 15% to 45% by weight of a copolycarbonate, i) Formula (1a): TIFF2025509533000018.tif41170 (in the formula, * indicates the position at which formula (1a) is attached to the polymer chain, ii) Formula (2a): TIFF2025509533000019.tif34170 (in the formula, * indicates the position where formula (2a) is attached to the polymer chain, and a copolycarbonate comprising B) a homopolycarbonate containing 26% to 60% by weight of units of formula (2a) as defined above, C) 8% to 11% by weight of bisphenol-A bis(diphenyl phosphate); D) 4% to 9% by weight of an impact modifier selected from acrylonitrile-butadiene-styrene or methyl methacrylate-butadiene-styrene; E) 2% to 13% by weight of a polyester selected from poly(1,4-butylene terephthalate), poly(1,4-cyclohexylene dimethylene 1,4-cyclohexane dicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, and combinations thereof; where The weight content of the unit of formula (1a) in the polycarbonate composition is 8% by weight to 31% by weight.

[0110] Preparation of polycarbonate compositions The polycarbonate composition according to the invention may be, for example, in the form of pellets.

[0111] The polycarbonate compositions according to the invention exhibit good processing behavior and can be made by a variety of methods, including intimately mixing the materials desired in the composition.

[0112] For example, the materials desired in the composition are first blended in a high speed mixer. Blending can also be accomplished by low shear processes, including but not limited to hand blending. The blend is then fed through a hopper into the throat of a twin screw extruder. Alternatively, at least one component can be incorporated into the composition by feeding it directly into the extruder at the throat and / or downstream through a side stuffer. Additives can also be compounded with the desired polymer resin to obtain a masterbatch and fed into the extruder. The extruder is generally operated at a temperature higher than that required to make the composition flow. The extrudate is immediately quenched in a water bath and pelletized. The pellets can be ¼ inch or less in length as described. Such pellets can be used for subsequent molding, shaping, or forming.

[0113] The melt blending method is preferred due to the availability of melt blending equipment in commercial polymer processing facilities.

[0114] Illustrative examples of equipment used in such melt processing methods include co-rotating and counter-rotating extruders, single screw extruders, co-kneaders, and various other types of extrusion equipment.

[0115] It is preferable to minimize the temperature of the melt during processing to avoid excessive degradation of the polymer. In molten resin compositions, it is often desirable to maintain a melt temperature between 230° C. and 350° C., although higher temperatures can be used if the residence time of the resin in the processing equipment is kept short.

[0116] In some cases, the molten composition exits the processing equipment, such as an extruder, through small exit holes in a die. The resulting strands of molten resin are cooled by passing the strands through a water bath. The cooled strands can be chopped into small pellets for packaging and further handling.

[0117] Molded product The polycarbonate compositions according to the invention can be used, for example, to produce various kinds of molded articles.

[0118] In a second aspect, the present invention also provides a molded article made from a polycarbonate composition according to the first aspect of the present invention.

[0119] Examples of such molded articles include, for example, films, profiles, housing parts, e.g., for consumer electronics or office equipment such as monitors, flat screens, notebooks, printers, and copiers, sheets, tubes, conduits, windows, doors, and other profiles for the building sector (interior and exterior applications), electrical and electronic components such as keypads, screen display covers, switches, plugs, and sockets, lenses, and body parts or interior trim for commercial vehicles.

[0120] Fabrication of molded products The polycarbonate compositions according to the present invention can be processed into molded articles by a variety of means, such as injection molding, extrusion, blow molding, or thermoforming to form molded articles.

[0121] In a third aspect, the present invention provides a method of making a molded article made from a composition according to the first aspect of the invention, the method comprising injection molding, extrusion, blow molding or thermoforming a polycarbonate composition according to the invention. EXAMPLES

[0122] The present invention will now be described in detail with reference to the following examples, which are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0123] Materials used Ingredient A CoPC-1: commercially available from Covestro Polymers (China), 7 cm2 measured at 330°C and 1.2 kg according to ISO 1133: (2011) 3 % bisphenol A units, based on the total amount of bisphenol units, having an MVR of 100 / min and a weight average molecular weight of about 30,000 g / mol, determined by gel permeation chromatography (GPC) in methylene chloride at 25° C. using polycarbonate standards. CoPC-2: commercially available from Covestro Polymer (China), 16 cm2 measured at 330°C and 1.2 kg according to ISO 1133:2011 3 % bisphenol A units, based on the total amount of bisphenol units, having an MVR of 100 / 10 min and a weight average molecular weight of about 27,000 g / mol, determined by gel permeation chromatography (GPC) in methylene chloride at 25° C. using polycarbonate standards.

[0124] Component B PC-1: A linear polycarbonate based on bisphenol A, commercially available from Covestro Polymer Co., Ltd. (China), with a weight average molecular weight of 26000 g / mol as determined by gel permeation chromatography (GPC) in methylene chloride at 25° C. using polycarbonate standards. PC-2: A linear polycarbonate based on bisphenol A, commercially available from Covestro Polymer Co., Ltd. (China), with a weight average molecular weight (Mw) of 28000 g / mol determined by gel permeation chromatography (GPC) in methylene chloride at 25° C. using polycarbonate standards. PC-3: A linear polycarbonate based on bisphenol A, commercially available from Covestro Polymer Co., Ltd. (China), with a weight average molecular weight (Mw) of 20,000 g / mol determined by gel permeation chromatography (GPC) in methylene chloride at 25° C. using polycarbonate standards.

[0125] Component C BDP: Bisphenol-A bis(diphenyl phosphate) available from Zhejiang Wansheng Science Co., Ltd. (China).

[0126] Component D ABS: available from INEOS Styrolution GmbH under the trade name P60, a core-shell impact modifier made by emulsion polymerization of a mixture of 58% by weight, based on ABS polymer, 24% by weight acrylonitrile and 76% by weight styrene in the presence of 42% by weight, based on ABS polymer, of linear polybutadiene rubber. MBS: Methyl methacrylate-butadiene-styrene with a core / shell structure available from Kaneka Corporation of Japan under the trade name Kane Ace M732.

[0127] Component E PET: Polyethylene terephthalate having an intrinsic viscosity of 0.652 dl / g to 0.676 dl / g available as RT6020 from Invista CO. PBT: Polybutylene terephthalate with an intrinsic viscosity of 1.2 dl / g available as 1100-211 S from ChangChun Plastic. PCCD: Copolymer of 1,4-cyclohexanedimethanol (CHDM) and 1,4-dimethylcyclohexanedicarboxylate (DMCD). PCCD has an intrinsic viscosity of 0.92 dL / g measured at 25° C. in 60 / 40 (w / w) phenol / tetrachloroethane at a concentration of 0.5 g / 100 ml. Available from Eastman Chemical Company as NEOSTAR COPOLYESTER 24303. Tritan: Approximately 14.5 cm according to ISO 1133-1:2011 at 260°C and a load of 5 kg 3 and poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyester, which is a copolymer of dimethyl terephthalate (DMT), 1,4-cyclohexanedimethanol (CHDM), and 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCBD), available from Eastman Chemical Company as TRITAN™ Copolyester TX1001, having a melt volume flow rate of 100 / 10 min.

[0128] Other Additives ADS5000: A poly(tetrafluoroethylene) masterbatch sold under the product name ADS5000 by Chemical Innovation Co., Ltd. (Thailand). FACI L348 (PETS): Pentaerythritol tetrastearate powder, a release agent. Irganox™ B900: a mixture of 80% Irgafos™ 168 and 20% Irganox™ 1076 sold by BASF, where Irgafos™ 168 is (tris(2,4-di-tert-butylphenyl)phosphite) and Irganox™ 1076 is (2,6-di-tert-butyl-4-(octadecaneoxy-carbonylethyl)phenol). Phosphorous acid: H available from Sigma-Aldrich Chemie GmbH 3 PO 3 .

[0129] Test Method The physical properties of the test specimens in the examples were tested as follows.

[0130] Comparative Tracking Index The comparative tracking index (CTI) was determined according to IEC 60112-2020 Fluid A.

[0131] Vicat softening temperature Vicat softening temperature (T Vicat ) was determined in accordance with ISO 306:2013 on test specimens measuring 80 mm x 10 mm x 4 mm using a Coesfeld Eco 2920 instrument from Coesfeld Materialtest with a ram load of 50 N and a heating rate of 120 °C / h.

[0132] Melt Volume Flow Rate (MVR) The melt volume flow rate (MVR) was determined according to ISO 1133:2011 using a Zwick 4106 instrument from Roell at 260° C. and a load of 5 kg.

[0133] Izod notched impact strength The Izod notched impact strength was measured according to ISO 180 / A:2000 (23° C., 4 mm, 5.5 J) on test specimens with dimensions of 80 mm×10 mm×3 mm.

[0134] Flame retardant Flame retardancy was evaluated on 127mm x 12.7mm x 1.5mm bars according to UL94-2015 after conditioning the bars at 23°C for 48 hours.

[0135] Comparative example (CE) 1~Comparative example 10 The materials listed in Table 1 were compounded and granulated in a twin-screw extruder (ZSK-26) (manufactured by Coperion, Werner and Pfleiderer) at a rotation speed of 225 rpm, a throughput of 20 kg / h, and a machine temperature of 300°C to 330°C.

[0136] The granules were processed into corresponding test specimens in an injection molding machine (Arburg) at melt temperatures of 300°C-330°C and mold temperatures of 60°C-80°C.

[0137] The physical properties of the resulting compositions, including comparative tracking index (CTI), melt volume flow rate (MVR), Vicat softening temperature, Izod notched impact strength, and flame retardancy, were tested and the results are summarized in Table 1.

[0138] TIFF2025509533000020.tif175170

[0139] As used herein, the weight content of BPTMC units in a polycarbonate composition (C BPTMC / C / W ) is calculated as follows: C BPTMC / C / W =(C BPTMC / CO / M ×M wBPTMC )×C co / c / w / (C BPTMC / CO / M ×M wBPTMC’ +C BPA / CO / M ×M wBPA ) (In the formula, C BPTMC / C / W represents the weight content of BPTMC units in the polycarbonate composition, C BPTMC / CO / M represents the molar content of BPTMC units in the copolycarbonate, M wBPTMC represents the molecular weight of the BPTMC unit, expressed in grams per mole, M wBPTMC’ represents the total molecular weight of the BPTMC unit and -C=O-, expressed in grams per mole; C BPA / CO / M represents the molar content of BPA units in the copolycarbonate, M wBPA represents the molecular weight of the BPA unit, expressed in grams per mole, and C co / c / w represents the weight content of the copolycarbonate in the polycarbonate composition).

[0140] Taking Comparative Example 2 as an example, the molar content of BPTMC units in CoPC-1 is 70 mol%, the molar content of BPA units is 30 mol%, the molecular weight of BPTMC units is 308 g / mol, the total molecular weight of BPTMC units and -C=O- is 336 g / mol, and the molecular weight of BPA units (including -C=O-) is 254 g / mol. CoPC-1 is present in the polycarbonate composition in an amount of 20 wt%, so the weight content of BPTMC units in Example 1 of the present invention is (70mol%×308g / mol)×20wt% / (70mol%×336g / mol+30mol%×254g / mol)=14wt% It is.

[0141] The composition of Comparative Example 1, which does not include the copolycarbonate and polyester defined in claim 1, does not have a high comparative tracking index.

[0142] The compositions of Comparative Example 2 and Comparative Example 3, which do not contain a polyester as defined in claim 1, do not have high comparative tracking indexes.

[0143] The compositions of Comparative Example 4 and Comparative Example 5, which do not include a copolycarbonate as defined in claim 1, do not have high impact strength.

[0144] Each of the compositions of Comparative Examples 6 to 9, which do not contain a copolycarbonate as defined in claim 1, does not have a high Vicat softening temperature. Furthermore, the composition of Comparative Example 9 does not have a high comparative tracking index.

[0145] The composition of Comparative Example 10, which does not include a copolycarbonate as defined in claim 1, does not have a high comparative tracking index.

[0146] Examples (IE) 1 to 3 of the present invention and Comparative Examples (CE) 11 to 14 Similarly, the materials listed in Table 2 were formulated and the resulting compositions were tested for physical properties, with the results summarized in Table 2.

[0147] TIFF2025509533000021.tif163170

[0148] Each of the compositions of Comparative Examples 11 to 14, which contain PET rather than the polyester defined in claim 1, does not have high impact strength.

[0149] The compositions of inventive examples 1 to 3 according to the invention have a good combination of comparative tracking index, Vicat softening temperature, Izod notched impact strength and flame retardancy.

[0150] Example (IE) 4 to Example 14 of the present invention Similarly, the materials listed in Table 3 were formulated and the resulting compositions were tested for physical properties, with the results summarized in Table 3.

[0151] TIFF2025509533000022.tif225170

[0152] The compositions of inventive examples 4 to 14 according to the invention have a good combination of comparative tracking index, Vicat softening temperature, Izod notched impact strength and flame retardancy.

[0153] Examples (IE) 15 to 20 of the present invention and Comparative Examples (CE) 15 to 17 Similarly, the materials listed in Table 4 were formulated and the resulting compositions were tested for physical properties with the results summarized in Table 4.

[0154] The compositions of Examples 15 to 20 of the present invention have a good combination of comparative tracking index, Vicat softening temperature, Izod notched impact strength, and flame retardancy.

[0155] The composition of Comparative Example 15, which contains more than 14 weight percent BDP (bisphenol-A bis(diphenyl phosphate)) copolycarbonate, does not have a high Vicat softening temperature.

[0156] The composition of Comparative Example 16, which contains less than 4% by weight ABS, does not have high impact strength.

[0157] The composition of Comparative Example 17, which contains more than 9% by weight ABS, does not pass the flame retardancy test.

[0158] TIFF2025509533000023.tif231170

Claims

1. A polycarbonate composition comprising the following components relative to the total weight of the composition: A) A copolymer in an amount of 10% to 60% by weight, i) Equation (1): (In the formula, ＊ This indicates the position where formula (1) is attached to the polymer chain. R １ Each of them independently consists of hydrogen or C １ ~C ４ It is alkyl, R ２ Each of them is independent of C １ ~C ４ It is alkyl, n is a unit of 0, 1, 2, or 3, ii) Formula (2): (In the formula, ＊ This indicates the position where formula (2) is attached to the polymer chain. R ３ is, independently of one another, hydrogen, a linear or branched C １ to C １０ alkyl, and R ４ Each of these is independently linear or branched C １ ~C １０ The units of alkyl, Copolycarbonates, B) A homopolycarbonate containing 25% to 75% by weight of the units of formula (2) defined above, C) 7% to 13% by weight of a phosphorus-based flame retardant, D) 4% to 9% by weight of an impact resistance modifier, E) Polyesters selected from 2% to 14% by weight of poly(1,4-butylene terephthalate), poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyesters, and combinations thereof, Including, here, A polycarbonate composition wherein the weight content of the unit of formula (1) in the polycarbonate composition is 8% by weight to 31% by weight.

2. The unit of formula (1) in the copolymer is formula (1'): (In the formula, R １ Each of them independently consists of hydrogen or C １ ~C ４ - Represents alkyl, R ２ Each of them is independent of C １ ~C ４ - Represents alkyl, n is derived from a diphenol of type 0, 1, 2, or 3, and The unit of formula (2) in the copolymer is formula (2'): (In the formula, R ３ Each of these is independently H, linear or branched C １ ~C １０ Represents alkyl, R ４ Each of these is independently linear or branched C １ ~C １０ The composition according to claim 1, derived from a diphenol (representing alkyl).

3. The composition according to claim 2, wherein the unit of formula (1) in the copolymer is derived from bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (BPTMC), and the unit of formula (2) in the copolymer is derived from bisphenol A.

4. The composition according to claim 1 or 2, wherein, based on the total number of moles of the units of formula (1) and formula (2), the molar content of the unit of formula (1) in the copolycarbonate is 20 mol% to 80 mol%, and the molar content of the unit of formula (2) in the copolycarbonate is 80 mol% to 20 mol%.

5. The composition according to claim 1 or 2, wherein the copolymer is selected from block copolymer and random copolymer.

6. The composition according to claim 1 or 2, wherein the copolycarbonate has a weight-average molecular weight (Mw) in the range of 16,000 g / mol to 40,000 g / mol, as determined by gel permeation chromatography (GPC) in methylene chloride at 25°C using a polycarbonate standard.

7. The unit of formula (2) in the homopolycarbonate is formula (2'): (In the formula, R ３ Each of these is independently H, linear or branched C １ ~C ４ Represents alkyl, and R ４ Each of these is independently linear or branched C １ ~C ４ The composition according to claim 1 or 2, derived from a diphenol (representing alkyl).

8. The composition according to claim 1 or 2, wherein the unit of formula (2) is derived from bisphenol A.

9. The phosphorus-based flame retardant is defined by formula (3): (In the formula, R １ , R ２ , R ３ , and R ４ These are C, each independently of the others and arbitrarily halogenated. １ ~C ８ Alkyl, C ５ ~C ６ Cycloalkyl, C ６ ~C ２０ Aryl, or C ７ ~C １２ These exhibit aralkyl properties, which are optionally substituted with alkyl and / or halogens. n represents either 0 or 1, independently of each other. q represents a number in the range of 0 to 30, and, X is selected from phosphorus compounds having 6 to 30 carbon atoms in a mononuclear or polynuclear aromatic residue, or 2 to 30 carbon atoms in a linear or branched aliphatic residue, which may be substituted with OH groups and may contain up to 8 ether bonds. The composition according to claim 1 or 2.

10. The impact resistance modifier is D1) At least one vinyl monomer in an amount of 5% to 95% by weight, D2) On one or more graft bases having a glass transition temperature of less than 10°C, in an amount of 95% to 5% by weight, Selected from rubber-modified vinyl (co)polymers, The composition according to claim 1 or 2, wherein the weight percent is calculated based on the weight of the rubber-modified vinyl (co)polymer.

11. The at least one vinyl monomer D1 is D1.1) 50% to 99% by weight of vinyl aromatic compounds and / or vinyl aromatic compounds substituted on the nucleus and / or methacrylic acid (C １ ~C ８ ) - alkyl ester, D1.2) 1% to 50% by weight of vinyl cyanide and / or (meth)acrylic acid (C １ ~C ８ ) - alkyl ester, A mixture of (wt% is calculated based on the weight of the vinyl monomer D1), and / or The composition according to claim 10, wherein the graft base D2 is selected from diene rubber, acrylate rubber, and ethylene / vinyl acetate rubber.

12. The composition according to claim 11, wherein monomer D1.1 is styrene, monomer D1.2 is selected from acrylonitrile and methyl methacrylate, and graft base D2 is selected from pure polybutadiene rubber or acrylate rubber.

13. The impact-resistant modifier is selected from ABS, methyl methacrylate-butadiene-styrene (MBS), and combinations thereof, as described in claim 1 or 2.

14. The following components, relative to the total weight of the aforementioned composition: A) A copolymer in an amount of 15% to 45% by weight, i) Formula (1a): (In the formula, ＊ The unit of formula (1a) indicates the position where the polymer chain is connected, ii) Formula (2a): (In the formula, ＊ The unit of formula (2a) indicates the position where the polymer chain is connected, Copolycarbonates, B) A homopolycarbonate containing 26% to 60% by weight of the units of formula (2a) defined above, C) 8% to 11% by weight of bisphenol-A bis(diphenyl phosphate), and D) 4% to 9% by weight of an impact modifier selected from acrylonitrile-butadiene-styrene or methyl methacrylate-butadiene-styrene, E) Polyesters selected from 2% to 13% by weight of poly(1,4-butylene terephthalate), poly(1,4-cyclohexylenedimethylene 1,4-cyclohexanedicarboxylate), poly(2,2,4,4-tetramethyl-1,3-cyclobutylene terephthalate) copolyesters, and combinations thereof, Including, here, The composition according to claim 1, wherein the weight content of the unit of formula (1a) in the polycarbonate composition is 8% by weight to 31% by weight.

15. A molded article made from the composition described in claim 1 or 2.

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