Antiviral polycarbonate resin composition and molded article composed of the same

Abstract

To provide an antiviral polycarbonate resin composition which is excellent in impact resistance and an antistatic property while exhibiting an antiviral property, and a molded article composed of the same.SOLUTION: A resin composition contains, with respect to 100 pts.wt. of the total of 50 to 99 pts.wt. of (A) a polycarbonate-based resin (component A) and 50 to 1 pts.wt. of (B) a styrenic resin (component B), 1 to 60 pts.wt. of (C) polyether ester amide (component C), 0.2 to 30 pts.wt. of (D) a surface active agent (component D), and 0.1 to 60 pts.wt. of at least one kind (component E) selected from the group consisting of talc, mica, a bromine-containing aromatic compound and antimony.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an antiviral polycarbonate resin composition and a molded article made therefrom. More specifically, it relates to an antiviral polycarbonate resin composition having excellent antiviral properties, which is composed of a polycarbonate resin, a styrene resin, a polyether ester amide, a surfactant, and at least one selected from the group consisting of talc, mica, a bromine-containing aromatic compound, and antimony, and a molded article made therefrom.

Background Art

[0002] Polycarbonate resins are generally used in many applications such as mechanical parts, automotive parts, electrical and electronic parts, and office equipment parts due to their excellent properties such as transparency, impact resistance, heat resistance, dimensional stability, and flame retardancy. In recent years, due to the pandemic (infection explosion) of the novel coronavirus (SARS-Cov-2), materials with antiviral performance have been required for a wide variety of applications such as housing facilities such as toilets, home appliances such as refrigerators and air conditioners, medical devices, ATMs (cash dispensers) installed in convenience stores, POS terminals, mobile phones, and smartphones. Also, for applications such as electrical and electronic parts, excellent antistatic properties with little dust adhesion are required.

[0003] As a method for imparting antiviral properties to a polycarbonate resin, a method of adding an inorganic / organic antiviral agent has been disclosed (Patent Documents 1 and 2). However, there are concerns about practical use from the viewpoints of the high cost, safety, and color tone of the antiviral agent. Also, it has been disclosed that by using a material carrying an inorganic filler and a sulfonic acid-based surfactant for synthetic resins with a low processing temperature such as polyvinyl chloride resin and acrylic resin, antiviral properties are exhibited while suppressing colorability (Patent Document 3). However, at a high processing temperature such as that of polycarbonate resin, the surfactant cannot perform its full function, and the performance such as antiviral properties, the originally high impact resistance of polycarbonate resin, and antistatic properties after wiping with water is insufficient. By adding a polyether ester amide to the polycarbonate resin, it has been disclosed that additives having excellent mechanical properties and stable antistatic properties are obtained at a high processing temperature (Patent Document 4). However, the antiviral properties are insufficient.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0005] In view of the above, an object of the present invention is to provide an antiviral polycarbonate resin composition that exhibits antiviral properties and is excellent in impact resistance and stable antistatic properties, and a molded article made therefrom.

Means for Solving the Problems

[0006] As a result of intensive studies to solve the above problems, the present inventor has found that by adding at least one selected from the group consisting of a styrene resin, a polyether ester amide, a surfactant, and talc, mica, a bromine-containing aromatic compound, and antimony to a polycarbonate resin in specific blending amounts, a resin composition having antiviral properties while being excellent in impact resistance and stable antistatic properties can be obtained, and thus the present invention has been completed. According to the present invention, the above problems are solved by the following constitution.

[0007] (Constitution 1) (A) 50 to 99 parts by weight of a polycarbonate resin (component A) and (B) 50 to 1 part by weight of a styrene resin (component B), in total 100 parts by weight, (C) 1 to 60 parts by weight of a polyether ester amide (component C), (D) 0.2 to 30 parts by weight of a surfactant (component D), and (E) at least one selected from the group consisting of talc, mica, a bromine-containing aromatic compound, and antimony (component E) 0.1 to 60 parts by weight. A resin composition characterized by containing. (Constitution 2) The resin composition according to the above Constitution 1, wherein the component B is at least one styrene resin selected from the group consisting of an ABS resin, an AS resin, and an MBS resin. (Constitution 3) The resin composition according to the above Constitution 1 or 2, wherein the component D is an anionic surfactant. (Constitution 4) The resin composition according to any one of the above Constitutions 1 to 3, having an antiviral activity value of 2.0 or more. (Constitution 5) A molded article comprising the resin composition according to any one of the above Constitutions 1 to 4.

Effects of the Invention

[0008] The antiviral polycarbonate resin composition of the present invention is excellent in sufficient antiviral properties, impact resistance, and antistatic properties in various environments, and is used by an unspecified large number of people and can be contacted. It is useful for plastic parts related to toilets and washbasins, exteriors of tablets, notebook computers, smartphones, digital cameras, medical monitors, POS, office machines, printers, TVs, etc., irons, hair dryers, rice cookers, microwave ovens, air conditioners, air purifiers, negative ion generators, various buttons and switches, doorknobs, plastic parts related to amusement, and various plastic parts related to mobility. It is particularly useful for EE applications that dislike static electricity. Therefore, the industrial effect exhibited by the present invention is remarkable.

Embodiments for Carrying Out the Invention

[0009] Hereinafter, the details of the present invention will be described.

[0010] <Component A: Polycarbonate Resin> The polycarbonate resin used in the present invention is obtained by reacting a dihydric phenol with a carbonate precursor. Examples of the reaction method include an interfacial polymerization method, a melt transesterification method, a solid-phase transesterification method of a carbonate prepolymer, and a ring-opening polymerization method of a cyclic carbonate compound.

[0011] Typical examples of the diphenols used herein include hydroquinone, resorcinol, 4,4'-biphenol, 1,1-bis(4-hydroxyphenyl)ethane, 2,2-bis(4-hydroxyphenyl)propane (commonly known as bisphenol A), 2,2-bis(4-hydroxy-3-methylphenyl)propane, 2,2-bis(4-hydroxyphenyl)butane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 2,2-bis(4-hydroxyphenyl)pentane, 4,4'-(p-phenylenediisopropylidene)diphenol, 4,4'-(m-phenylenediisopropylidene)diphenol, 1,1-bis(4-hydroxyphenyl)-4-isopropylcyclohexane, bis(4-hydroxyphenyl)oxide, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxyphenyl)sulfoxide, bis(4-hydroxyphenyl)sulfone, bis(4-hydroxyphenyl)ketone, bis(4-hydroxyphenyl)ester, bis(4-hydroxy-3-methylphenyl)sulfide, 9,9-bis(4-hydroxyphenyl)fluorene, and 9,9-bis(4-hydroxy-3-methylphenyl)fluorene. Preferred diphenols are bis(4-hydroxyphenyl)alkanes, and among them, bisphenol A is particularly preferred from the viewpoint of impact resistance and is widely used.

[0012] In the present invention, in addition to bisphenol A-based polycarbonate resins, which are general-purpose polycarbonate resins, it is possible to use special polycarbonate resins produced using other diphenols as component A.

[0013] For example, as part or all of the dihydric phenol component, 4,4'-(m-phenylenediisopropylidene)diphenol (hereinafter may be abbreviated as "BPM"), 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane (hereinafter may be abbreviated as "Bis-TMC"), 9,9-bis(4-hydroxyphenyl)fluorene, and 9,9-bis(4-hydroxy-3-methylphenyl)fluorene (hereinafter may be abbreviated as "BCF") are used. The polycarbonate resin (homopolymer or copolymer) is suitable for applications where requirements for dimensional changes due to water absorption and morphological stability are particularly strict. These dihydric phenols other than BPA are preferably used in an amount of 5 mol% or more, particularly 10 mol% or more, based on the total amount of the dihydric phenol component constituting the polycarbonate resin.

[0014] In particular, when high rigidity and better hydrolysis resistance are required, it is particularly preferred that component A constituting the resin composition is one of the copolymer polycarbonate resins of the following (1) to (3). (1) A copolymer polycarbonate resin in which, in 100 mol% of the dihydric phenol component constituting the polycarbonate resin, BPM is 20 to 80 mol% (more preferably 40 to 75 mol%, even more preferably 45 to 65 mol%), and BCF is 20 to 80 mol% (more preferably 25 to 60 mol%, even more preferably 35 to 55 mol%). (2) A copolymer polycarbonate resin in which, in 100 mol% of the dihydric phenol component constituting the polycarbonate resin, BPA is 10 to 95 mol% (more preferably 50 to 90 mol%, even more preferably 60 to 85 mol%), and BCF is 5 to 90 mol% (more preferably 10 to 50 mol%, even more preferably 15 to 40 mol%). (3) A copolymer polycarbonate resin in which, in 100 mol% of the dihydric phenol component constituting the polycarbonate resin, BPM is 20 to 80 mol% (more preferably 40 to 75 mol%, even more preferably 45 to 65 mol%), and Bis-TMC is 20 to 80 mol% (more preferably 25 to 60 mol%, even more preferably 35 to 55 mol%).

[0015] These special polycarbonate resins may be used alone or may be appropriately mixed and used in two or more kinds. They can also be used in mixture with the commonly used bisphenol A type polycarbonate resin.

[0016] The production methods and characteristics of these special polycarbonate resins are described in detail, for example, in JP-A-6-172508, JP-A-8-27370, JP-A-2001-55435, JP-A-2002-117580, etc.

[0017] Among the various polycarbonate resins described above, those in which the copolymer composition etc. are adjusted so that the water absorption rate and Tg (glass transition temperature) are within the following ranges have good hydrolysis resistance of the polymer itself and are also extremely excellent in terms of low warpage after molding, and thus are particularly suitable in fields where morphological stability is required. (i) A polycarbonate resin having a water absorption rate of 0.05 to 0.15%, preferably 0.06 to 0.13%, and a Tg of 120 to 180°C, or (ii) A polycarbonate resin having a Tg of 160 to 250°C, preferably 170 to 230°C, and a water absorption rate of 0.10 to 0.30%, preferably 0.13 to 0.30%, more preferably 0.14 to 0.27%.

[0018] Here, the water absorption rate of the polycarbonate resin is a value obtained by measuring the moisture content after immersing a disk-shaped test piece having a diameter of 45 mm and a thickness of 3.0 mm in water at 23°C for 24 hours in accordance with ISO62-1980. The Tg (glass transition temperature) is a value obtained by differential scanning calorimetry (DSC) measurement in accordance with JIS K7121.

[0019] As the carbonate precursor, carbonyl halide, carbonic acid diester, haloformate, etc. are used, and specifically, phosgene, diphenyl carbonate, dihaloformate of dihydric phenol, etc. are mentioned.

[0020] When producing a polycarbonate resin from the above-mentioned dihydric phenol and carbonate precursor by the interfacial polymerization method, a catalyst, a terminal terminator, an antioxidant for preventing oxidation of the dihydric phenol, etc. may be used as necessary. Further, the polycarbonate resin of the present invention includes a branched polycarbonate resin obtained by copolymerizing a polyfunctional aromatic compound having three or more functional groups, a polyester carbonate resin obtained by copolymerizing an aromatic or aliphatic (including alicyclic) difunctional carboxylic acid, a copolymer polycarbonate resin obtained by copolymerizing a difunctional alcohol (including alicyclic), and a polyester carbonate resin obtained by copolymerizing such a difunctional carboxylic acid and a difunctional alcohol together. Further, a mixture obtained by mixing two or more of the obtained polycarbonate resins may also be used.

[0021] The branched polycarbonate resin can impart properties such as drip prevention performance to the resin composition of the present invention. Examples of the polyfunctional aromatic compound having three or more functional groups used in such a branched polycarbonate resin include phloroglucin, phloroglucide, or 4,6-dimethyl-2,4,6-tris(4-hydroxydiphenyl)heptene-2, 2,4,6-trimethyl-2,4,6-tris(4-hydroxyphenyl)heptane, 1,3,5-tris(4-hydroxyphenyl)benzene, 1,1,1-tris(4-hydroxyphenyl)ethane, 1,1,1-tris(3,5-dimethyl-4-hydroxyphenyl)ethane, 2,6-bis(2-hydroxy-5-methylbenzyl)-4-methylphenol, 4-{4-[1,1-bis(4-hydroxyphenyl)ethyl]benzene}-α,α-dimethylbenzylphenol and other tris-phenols, tetra(4-hydroxyphenyl)methane, bis(2,4-dihydroxyphenyl)ketone, 1,4-bis(4,4-dihydroxytriphenylmethyl)benzene, or trimellitic acid, pyromellitic acid, benzophenone tetracarboxylic acid and their acid chlorides, etc. Among them, 1,1,1-tris(4-hydroxyphenyl)ethane and 1,1,1-tris(3,5-dimethyl-4-hydroxyphenyl)ethane are preferred, and particularly 1,1,1-tris(4-hydroxyphenyl)ethane is preferred.

[0022] In the branched polycarbonate resin, the structural unit derived from the polyfunctional aromatic compound is preferably 0.01 to 1 mol%, more preferably 0.05 to 0.9 mol%, still more preferably 0.05 to 0.8 mol% in the total of 100 mol% of the structural unit derived from the polyfunctional aromatic compound and the structural unit derived from the divalent phenol.

[0023] In particular, in the case of the melt transesterification method, branched structural units may be generated as side reactions. Regarding the amount of such branched structural units, it is preferably 0.001 to 1 mol%, more preferably 0.005 to 0.9 mol%, still more preferably 0.01 to 0.8 mol% in the total of 100 mol% with the structural unit derived from the divalent phenol. Note that the ratio of such branched structures 1 can be calculated by 1H-NMR measurement.

[0024] The aliphatic difunctional carboxylic acid is preferably an α,ω-dicarboxylic acid. Examples of the aliphatic difunctional carboxylic acid include linear saturated aliphatic dicarboxylic acids such as sebacic acid (decanedioic acid), dodecanedioic acid, tetradecanedioic acid, octadecanedioic acid, icosanedioic acid, and alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid. As the difunctional alcohol, an alicyclic diol is more suitable, and examples thereof include cyclohexanedimethanol, cyclohexanediol, and tricyclodecanedimethanol.

[0025] Reaction forms such as the interfacial polymerization method, the melt transesterification method, the solid-phase transesterification method of carbonate prepolymer, and the ring-opening polymerization method of cyclic carbonate compound, which are the production methods of the polycarbonate resin of the present invention, are methods well known in various literatures and patent gazettes.

[0026] The viscosity average molecular weight (M) of the polycarbonate resin is not particularly limited, but is preferably 1.8×10 4 ~4.0×10 4 and more preferably 2.0×10 4 ~3.5×104 , more preferably 2.2×10 4 ~3.0×10 4 . In the case of a polycarbonate resin having a viscosity average molecular weight of less than 1.8×10 4 , good mechanical properties may not be obtained. On the other hand, a resin composition obtained from a polycarbonate resin having a viscosity average molecular weight exceeding 4.0×10 4 is inferior in versatility in that it is inferior in fluidity during injection molding.

[0027] Incidentally, the polycarbonate resin may be one obtained by mixing a polycarbonate resin having a viscosity average molecular weight outside the above range. In particular, a polycarbonate resin having a viscosity average molecular weight exceeding the above range (5×10 4 ) has improved entropy elasticity of the resin. As a result, in gas-assisted molding and foam molding that may be used when molding a reinforced resin material into a structural member, good moldability is exhibited. Such improvement in moldability is even better than that of the branched polycarbonate resin. As a more preferred embodiment, the component A is a polycarbonate resin (A-1-1-1 component) having a viscosity average molecular weight of 7×10 4 ~3×10 5 , and a polycarbonate resin (A-1-1-2 component) having a viscosity average molecular weight of 1×10 4 ~3×10 4 , and a polycarbonate resin (A-1-1 component) having a viscosity average molecular weight of 1.6×10 4 ~3.5×10 4 (hereinafter, may be referred to as "high molecular weight component-containing polycarbonate resin") can also be used.

[0028] In such a high molecular weight component-containing polycarbonate resin (A-1-1 component), the molecular weight of the A-1-1-1 component is preferably 7×10 4 ~2×10 5 , more preferably 8×10 4 ~2×10 5 , still more preferably 1×10 5 ~2×10 5 , particularly preferably 1×10 5 ~1.6×10 5It is. The molecular weight of the A-1-1-2 component is 1×10 4 ~2.5×10 4 is preferable, more preferably 1.1×10 4 ~2.4×10 4 , still more preferably 1.2×10 4 ~2.4×10 4 , particularly preferably 1.2×10 4 ~2.3×10 4 is.

[0029] The high molecular weight component-containing polycarbonate resin (A-1-1 component) can be obtained by mixing the A-1-1-1 component and the A-1-1-2 component in various ratios and adjusting them to satisfy a predetermined molecular weight range. Preferably, in 100% by weight of the A-1-1 component, the A-1-1-1 component is in the range of 2 to 40% by weight, more preferably the A-1-1-1 component is in the range of 3 to 30% by weight, still more preferably the A-1-1-1 component is in the range of 4 to 20% by weight, and particularly preferably the A-1-1-1 component is in the range of 5 to 20% by weight.

[0030] Moreover, as a method for preparing the A-1-1 component, (1) a method of independently polymerizing the A-1-1-1 component and the A-1-1-2 component and mixing them, (2) a method represented by the method disclosed in JP-A-5-306336, a method of producing a polycarbonate resin showing a plurality of polymer peaks in a molecular weight distribution chart by the GPC method in the same system, and producing such a polycarbonate resin so as to satisfy the conditions of the A-1-1 component of the present invention, and (3) a method of mixing the polycarbonate resin obtained by such a production method (the production method of (2)) with the separately produced A-1-1-1 component and / or A-1-1-2 component, etc. can be mentioned.

[0031] The viscosity average molecular weight referred to in the present invention is first determined by using an Ostwald viscometer from a solution prepared by dissolving 0.7 g of a polycarbonate resin in 100 ml of methylene chloride at 20°C to obtain a specific viscosity (η SP ), Specific viscosity (η SP ) = (t - t 0 ) / t0 [t 0 is the number of seconds for methylene chloride to fall, and t is the number of seconds for the sample solution to fall The specific viscosity (η SP ) is used to calculate the viscosity-average molecular weight M by the following formula. η SP / c = [η] + 0.45×[η] 2 c (where [η] is the intrinsic viscosity) [η] = 1.23×10 -4 M 0.83 c = 0.7

[0032] In addition, the viscosity-average molecular weight of the polycarbonate resin in the antiviral polycarbonate resin composition of the present invention is calculated as follows. That is, the composition is mixed with 20 to 30 times its weight of methylene chloride to dissolve the soluble components in the composition. The soluble components are collected by filtration through Celite. Then, the solvent in the resulting solution is removed. The solid after solvent removal is dried thoroughly to obtain a solid of the component soluble in methylene chloride. From a solution obtained by dissolving 0.7 g of such a solid in 100 ml of methylene chloride, the specific viscosity at 20°C is determined in the same manner as above, and the viscosity-average molecular weight M is calculated from the specific viscosity in the same manner as above.

[0033] As the polycarbonate resin of the present invention, a polycarbonate-polydiorganosiloxane copolymer resin can also be used. The polycarbonate-polydiorganosiloxane copolymer resin is preferably a copolymer resin prepared by copolymerizing a divalent phenol represented by the following general formula (1) and a hydroxyaryl-terminated polydiorganosiloxane represented by the following general formula (3).

[0034] [Chemical formula]

[0035] [In the above general formula (1), R 1 and R 2each independently represents a group selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 18 carbon atoms, a cycloalkyl group having 6 to 20 carbon atoms, a cycloalkoxy group having 6 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, an aryloxy group having 6 to 14 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an aralkyloxy group having 7 to 20 carbon atoms, a nitro group, an aldehyde group, a cyano group, and a carboxy group. When there are a plurality of them, they may be the same or different. e and f are each an integer from 1 to 4, and W is at least one group selected from the group consisting of a single bond and a group represented by the following general formula (2).

[0036]

Chemical formula

[0037] [In the above general formula (2), R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 and R 18 each independently represents a group selected from the group consisting of a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, an aryl group having 6 to 14 carbon atoms, and an aralkyl group having 7 to 20 carbon atoms. R 19 and R 20 each independently represents a group selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having 1 to 18 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a cycloalkyl group having 6 to 20 carbon atoms, a cycloalkoxy group having 6 to 20 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, an aryl group having 6 to 14 carbon atoms, an aryloxy group having 6 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an aralkyloxy group having 7 to 20 carbon atoms, a nitro group, an aldehyde group, a cyano group, and a carboxy group. When there are a plurality of them, they may be the same or different. g is an integer from 1 to 10, and h is an integer from 4 to 7.

[0038] [Chemical formula]

[0039] In the above general formula (3), R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, and R 9 and R 10 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms. p is a natural number, q is 0 or a natural number, and p + q is a natural number from 10 to 300. X is a divalent aliphatic group having 2 to 8 carbon atoms.]

[0040] Examples of the divalent phenol (I) represented by the general formula (1) include 4,4'-dihydroxybiphenyl, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 2,2-bis(4-hydroxy-3,3'-biphenyl)propane, 2,2-bis(4-hydroxy-3-isopropylphenyl)propane, 2,2-bis(3-t-butyl-4-hydroxyphenyl)propane, 2,2-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)octane, 2,2-bis(3-bromo-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2-bis(3-cyclohexyl-4-hydroxyphenyl)propane, 1,1-bis(3-cyclohexyl-4-hydroxyphenyl)cyclohexane, bis(4-hydroxyphenyl)diphenylmethane, 9,9-bis(4-hydroxyphenyl)fluorene, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)cyclopentane, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3,3'-dimethyldiphenyl ether, 4,4'-sulfonyldiphenol, 4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxydiphenyl sulfide, 2,2'-dimethyl-4,4'-sulfonyldiphenol, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfide, 2,2'-diphenyl-4,4'-sulfonyldiphenol, 4,4'-dihydroxy-3,3'-diphenyldiphenyl sulfoxide, 4,4'-dihydroxy-3,3'-diphenyldiphenyl sulfide, 1,3-bis{2-(4-hydroxyphenyl)propyl}benzene, 1,4-bis{2-(4-hydroxyphenyl)propyl}benzene, 1,4-bis(4-hydroxyphenyl)cyclohexane, 1,3-bis(4-hydroxyphenyl)cyclohexane, 4,8-bis(4-hydroxyphenyl)tricyclo[5.2.1.02,6]decane, 4,4'-(1,3-adamantanediyl)diphenol, 1,3-bis(4-hydroxyphenyl)-5,7-dimethyladamantane and the like can be mentioned. Among them, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(4-hydroxy-3-methylphenyl)propane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 4,4'-sulfonyldiphenol, 2,2'-dimethyl-4,4'-sulfonyldiphenol, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 1,3-bis{2-(4-hydroxyphenyl)propyl}benzene, 1,4-bis{2-(4-hydroxyphenyl)propyl}benzene are preferable, and particularly 2,2-bis(4-hydroxyphenyl)propane, 1,1-bis(4-hydroxyphenyl)cyclohexane (BPZ), 4,4'-sulfonyldiphenol, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene are preferable. Among them, 2,2-bis(4-hydroxyphenyl)propane having excellent strength and good durability is most suitable. Further, these may be used alone or in combination of two or more kinds.,

[0041] As the hydroxyaryl-terminated polydiorganosiloxane represented by the above general formula (3), for example, compounds shown below are preferably used.

[0042]

Chemical formula

[0043] Hydroxyaryl-terminated polydiorganosiloxane (II) can be easily produced by subjecting phenols having an olefinic unsaturated carbon-carbon bond, preferably vinylphenol, 2-allylphenol, isopropenylphenol, 2-methoxy-4-allylphenol, to a hydrosilylation reaction at the terminals of a polysiloxane chain having a predetermined degree of polymerization. Among them, (2-allylphenol)-terminated polydiorganosiloxane and (2-methoxy-4-allylphenol)-terminated polydiorganosiloxane are preferred, and in particular, (2-allylphenol)-terminated polydimethylsiloxane and (2-methoxy-4-allylphenol)-terminated polydimethylsiloxane are preferred. The hydroxyaryl-terminated polydiorganosiloxane (II) preferably has a molecular weight distribution (Mw / Mn) of 3 or less. In order to exhibit more excellent low outgassing property and low temperature impact property during high-temperature molding, such a molecular weight distribution (Mw / Mn) is more preferably 2.5 or less, and even more preferably 2 or less. If it exceeds the upper limit of such a preferred range, the amount of outgas generated during high-temperature molding is large, and the low temperature impact property may be inferior.

[0044] Also, in order to achieve a high degree of impact resistance, the diorganosiloxane degree of polymerization (p + q) of the hydroxyaryl-terminated polydiorganosiloxane (II) is suitably 10 to 300. Such a diorganosiloxane degree of polymerization (p + q) is preferably 10 to 200, more preferably 12 to 150, and even more preferably 14 to 100. If it is less than the lower limit of such a preferred range, the impact resistance, which is a characteristic of the polycarbonate-polydiorganosiloxane copolymer, is not effectively exhibited, and if it exceeds the upper limit of such a preferred range, poor appearance appears.

[0045] The content of the polydiorganosiloxane in the polycarbonate-polydiorganosiloxane copolymer resin preferably accounts for 0.1 to 50% by weight of the total weight. Such a polydiorganosiloxane component content is more preferably 0.5 to 30% by weight, and even more preferably 1 to 20% by weight. Above the lower limit of such a suitable range, it is excellent in impact resistance and flame retardancy, and below the upper limit of such a suitable range, a stable appearance that is not easily affected by molding conditions is easily obtained. Such a polydiorganosiloxane polymerization degree and polydiorganosiloxane content are 1 It is possible to calculate by 1H-NMR measurement.

[0046] In the present invention, only one kind of hydroxyaryl-terminated polydiorganosiloxane (II) may be used, or two or more kinds may be used. Also, within a range that does not interfere with the present invention, other comonomers other than the above-mentioned dihydric phenol (I) and hydroxyaryl-terminated polydiorganosiloxane (II) can be used in combination within a range of 10% by weight or less based on the total weight of the copolymer.

[0047] In the present invention, a mixed solution containing an oligomer having a terminal chloroformate group is prepared in advance by reacting a dihydric phenol (I) and a carbonate-forming compound in a mixed solution of an organic solvent insoluble in water and an aqueous alkali solution.

[0048] In generating the oligomer of the dihydric phenol (I), the total amount of the dihydric phenol (I) used in the method of the present invention may be made into an oligomer at once, or a part of it may be added as a post-added monomer to the subsequent interfacial polycondensation reaction as a reaction raw material. The post-added monomer is added to accelerate the subsequent polycondensation reaction, and it is not necessary to add it deliberately if it is not necessary. The method of this oligomer formation reaction is not particularly limited, but usually, a method of performing it in a solvent in the presence of an acid binder is suitable.

[0049] The usage ratio of the carbonic ester-forming compound may be appropriately adjusted in consideration of the stoichiometric ratio (equivalent) of the reaction. When using a gaseous carbonic ester-forming compound such as phosgene, a method of blowing this into the reaction system can be preferably adopted.

[0050] Examples of the acid binder include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, alkali metal carbonates such as sodium carbonate and potassium carbonate, organic bases such as pyridine, or mixtures thereof. The usage ratio of the acid binder may also be appropriately determined in consideration of the stoichiometric ratio (equivalent) of the reaction as described above. Specifically, it is preferable to use 2 equivalents or a slightly excessive amount of the acid binder with respect to the number of moles of the divalent phenol (I) used for the formation of the oligomer (usually 1 mole corresponds to 2 equivalents).

[0051] As the solvent, various solvents inert to the reaction, such as those used in the production of known polycarbonate resins, may be used alone or as a mixed solvent. Representative examples include hydrocarbon solvents such as xylene, and halogenated hydrocarbon solvents such as methylene chloride and chlorobenzene. In particular, halogenated hydrocarbon solvents such as methylene chloride are preferably used.

[0052] The reaction pressure for oligomer formation is not particularly limited and may be any of normal pressure, increased pressure, and reduced pressure. However, it is usually advantageous to carry out the reaction under normal pressure. The reaction temperature is selected from the range of -20 to 50°C. In many cases, heat is generated during polymerization, so it is desirable to cool with water or ice. The reaction time depends on other conditions and cannot be generally specified, but it is usually carried out for 0.2 to 10 hours. The pH range of the oligomer formation reaction is the same as known interfacial reaction conditions, and the pH is always adjusted to 10 or more.

[0053] The present invention thus obtains a mixed solution containing an oligomer of a dihydric phenol (I) having a terminal chloroformate group, and then, while stirring the mixed solution, adds a hydroxyaryl-terminated polydiorganosiloxane (II) represented by the general formula (3) which is highly purified to have a molecular weight distribution (Mw / Mn) of 3 or less to the dihydric phenol (I), and interface polycondenses the hydroxyaryl-terminated polydiorganosiloxane (II) and the oligomer to obtain a polycarbonate-polydiorganosiloxane copolymer.

[0054]

Chemical formula

[0055] (In the above general formula (3), R 3 , R 4 , R 5 , R 6 , R 7 and R 8 are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms, R 9 and R 10 are each independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, p is a natural number, q is 0 or a natural number, and p + q is a natural number from 10 to 300. X is a divalent aliphatic group having 2 to 8 carbon atoms.)

[0056] When performing the interfacial polycondensation reaction, an acid binder may be appropriately added in consideration of the stoichiometric ratio (equivalent amount) of the reaction. Examples of the acid binder include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, alkali metal carbonates such as sodium carbonate and potassium carbonate, organic bases such as pyridine, or mixtures thereof. Specifically, when using the hydroxyaryl-terminated polydiorganosiloxane (II), or when adding a part of the above-mentioned divalent phenol (I) as a post-added monomer at this reaction stage, it is preferable to use 2 equivalents or an excess amount of alkali based on the total number of moles of the post-added divalent phenol (I) and the hydroxyaryl-terminated polydiorganosiloxane (II) (usually 1 mole corresponds to 2 equivalents).

[0057] The polycondensation by the interfacial polycondensation reaction between the oligomer of the divalent phenol (I) and the hydroxyaryl-terminated polydiorganosiloxane (II) is carried out by vigorously stirring the above mixture.

[0058] In such a polymerization reaction, a terminal terminator or a molecular weight regulator is usually used. Examples of the terminal terminator include compounds having a monovalent phenolic hydroxyl group. In addition to ordinary phenol, p-tert-butylphenol, p-cumylphenol, tribromophenol, etc., long-chain alkylphenol, aliphatic carboxylic acid chloride, aliphatic carboxylic acid, alkyl hydroxybenzoate, alkyl hydroxy phenylacetate, alkyl ether phenol, etc. are exemplified. The usage amount is in the range of 100 to 0.5 moles, preferably 50 to 2 moles, per 100 moles of all the divalent phenol-based compounds used, and it is naturally possible to use two or more kinds of compounds in combination.

[0059] In order to promote the polycondensation reaction, a catalyst such as a tertiary amine like triethylamine or a quaternary ammonium salt may be added. The reaction time of such a polymerization reaction is preferably 30 minutes or more, more preferably 50 minutes or more. If desired, a small amount of an antioxidant such as sodium sulfite or hydrosulfide may be added.

[0060] The branching agent can be used in combination with the above-mentioned dihydric phenol-based compound to form a branched polycarbonate-polydiorganosiloxane. Examples of the trifunctional or higher polyfunctional aromatic compounds used in such branched polycarbonate-polydiorganosiloxane copolymer resins include phloroglucin, phloroglucide, or 4,6-dimethyl-2,4,6-tris(4-hydroxydiphenyl)heptene-2, 2,4,6-trimethyl-2,4,6-tris(4-hydroxyphenyl)heptane, 1,3,5-tris(4-hydroxyphenyl)benzene, 1,1,1-tris(4-hydroxyphenyl)ethane, 1,1,1-tris(3,5-dimethyl-4-hydroxyphenyl)ethane, 2,6-bis(2-hydroxy-5-methylbenzyl)-4-methylphenol, 4-{4-[1,1-bis(4-hydroxyphenyl)ethyl]benzene}-α,α-dimethylbenzylphenol and other tris-phenols, tetra(4-hydroxyphenyl)methane, bis(2,4-dihydroxyphenyl)ketone, 1,4-bis(4,4-dihydroxytriphenylmethyl)benzene, or trimellitic acid, pyromellitic acid, benzophenone tetracarboxylic acid and their acid chlorides, etc. Among them, 1,1,1-tris(4-hydroxyphenyl)ethane and 1,1,1-tris(3,5-dimethyl-4-hydroxyphenyl)ethane are preferred, and particularly 1,1,1-tris(4-hydroxyphenyl)ethane is preferred. The proportion of the polyfunctional compound in the branched polycarbonate-polydiorganosiloxane copolymer resin is preferably 0.001 to 1 mol%, more preferably 0.005 to 0.9 mol%, still more preferably 0.01 to 0.8 mol%, and particularly preferably 0.05 to 0.4 mol% in the total amount of the polycarbonate-polydiorganosiloxane copolymer resin. Regarding the amount of such a branched structure 1 It can be calculated by H-NMR measurement.

[0061] The reaction pressure can be any of reduced pressure, normal pressure, and increased pressure, but usually, it can be preferably carried out at normal pressure or about the self-pressure of the reaction system. The reaction temperature is selected from the range of -20 to 50 °C. Since heat is often generated during polymerization, it is desirable to carry out water cooling or ice cooling. The reaction time varies depending on other conditions such as the reaction temperature and cannot be generally specified, but usually, it is carried out for 0.5 to 10 hours.

[0062] Optionally, the obtained polycarbonate-polydiorganosiloxane copolymer resin is appropriately subjected to physical treatment (such as mixing, fractionation, etc.) and / or chemical treatment (such as polymer reaction, cross-linking treatment, partial decomposition treatment, etc.) to obtain a polycarbonate-polydiorganosiloxane copolymer resin with a desired reduced viscosity [η SP / c].

[0063] The obtained reaction product (crude product) can be subjected to various post-treatments such as known separation and purification methods to recover a polycarbonate-polydiorganosiloxane copolymer resin with a desired purity (degree of purification). The average size of the polydiorganosiloxane domains in the polycarbonate-polydiorganosiloxane copolymer resin molded product is preferably in the range of 1 to 60 nm. Such an average size is more preferably 3 to 55 nm, and still more preferably 5 to 50 nm. If it is less than the lower limit of such a preferred range, the impact resistance and flame retardancy are not sufficiently exhibited, and if it exceeds the upper limit of such a preferred range, the impact resistance may not be stably exhibited.

[0064] Furthermore, as the polycarbonate resin in the present invention, it is also possible to use a polycarbonate resin regenerated from used products, that is, a recycled polycarbonate resin. Examples of used products preferably include various glazing materials typified by sound insulation walls, automobile windows, translucent roofing materials, and automobile sunroofs, transparent members such as windshields and automobile headlamp lenses, containers such as water bottles, light guide plates, spectacle lenses, and optical recording media. Also, crushed products obtained from non-conforming products, sprues, runners, etc. of the product, or pellets obtained by melting them can also be used.

[0065] <Component B: Styrenic resin> The antiviral polycarbonate resin composition of the present invention contains a styrenic resin as Component B. Such a styrenic resin is preferably at least one styrenic resin selected from the group consisting of an ABS resin (Component B-1), an AS resin (Component B-2), and an MBS resin (Component B-3) from the viewpoint of properties such as impact resistance. These resins have good moldability and appropriate heat resistance and flame retardancy, so they are preferred resins for maintaining the balance of these properties.

[0066] <Component B-1: ABS resin> The ABS resin used in the present invention is a mixture of a thermoplastic graft copolymer obtained by graft polymerizing a vinyl cyanide compound and an aromatic vinyl compound onto a diene rubber component and a copolymer of a vinyl cyanide compound and an aromatic vinyl compound. As the diene rubber component forming this ABS resin, for example, rubbers having a glass transition temperature of -30°C or lower such as polybutadiene, polyisoprene, and styrene-butadiene copolymer are used, and the proportion thereof is preferably 5 to 80% by weight, more preferably 8 to 50% by weight, and particularly preferably 10 to 30% by weight in 100% by weight of the ABS resin component. As the vinyl cyanide compound grafted onto the diene rubber component, acrylonitrile can be particularly preferably used. As the aromatic vinyl compound grafted onto the diene rubber component, styrene and α-methylstyrene can be particularly preferably used. The proportion of the components grafted onto such a diene rubber component is preferably 95 to 20% by weight, more preferably 90 to 50% by weight in 100% by weight of the ABS resin component. Further, with respect to 100% by weight of the total amount of such a vinyl cyanide compound and an aromatic vinyl compound, it is preferable that the vinyl cyanide compound is 5 to 50% by weight and the aromatic vinyl compound is 95 to 50% by weight. Further, maleic anhydride, N-substituted maleimide, etc. can be mixed and used for a part of the components grafted onto the above diene rubber component, and the content ratio thereof is preferably 15% by weight or less in the ABS resin component. Further, various conventionally known initiators, chain transfer agents, emulsifiers, etc. used in the reaction can be used as necessary.

[0067] The rubber particle size of the ABS resin used in the present invention is preferably 0.1 to 5.0 μm, more preferably 0.15 to 1.5 μm, and even more preferably 0.2 to 0.8 μm. Such a distribution of rubber particle sizes can be either a single distribution or a distribution having two or more peaks, and further, in terms of its morphology, even if the rubber particles form a single phase, or even if it has a salami structure by containing an occluded phase around the rubber particles.

[0068] Also, it is well known that an ABS resin contains a vinyl cyanide compound and an aromatic vinyl compound that are not grafted to a diene rubber component, and the ABS resin of the present invention may also contain free polymer components generated during such polymerization.

[0069] Also, the ratio of the grafted vinyl cyanide compound and aromatic vinyl compound is preferably 20 to 200% in terms of grafting rate (weight %) with respect to the diene rubber component, and more preferably 20 to 70%.

[0070] Such an ABS resin may be produced by any of bulk polymerization, suspension polymerization, and emulsion polymerization methods, but those produced by bulk polymerization are particularly preferred. Further, typical examples of such bulk polymerization methods include the continuous bulk polymerization method (so-called Toray method) described in Chemical Engineering, Vol. 48, No. 6, page 415 (1984), and the continuous bulk polymerization method (so-called Mitsui Toatsu method) described in Chemical Engineering, Vol. 53, No. 6, page 423 (1989). Any ABS resin can be suitably used as the ABS resin of the present invention. Also, the copolymerization method may be carried out in one stage or in multiple stages. Further, a blend obtained by separately copolymerizing an aromatic vinyl compound and a vinyl cyanide component with the ABS resin obtained by such a production method can also be preferably used.

[0071] ABS resin with a reduced amount of alkali (alkaline earth) metal is more suitable in terms of good thermal stability and hydrolysis resistance. The amount of alkali (alkaline earth) metal in the resin is preferably less than 100 ppm, more preferably less than 80 ppm, still more preferably less than 50 ppm, and particularly preferably less than 10 ppm. From this point as well, the ABS resin produced by the bulk polymerization method is preferably used. Further, in relation to such good thermal stability and hydrolysis resistance, when an emulsifier is used in the ABS resin, the emulsifier is preferably sulfonates, more preferably alkyl sulfonates. Also, when a coagulant is used, the coagulant is preferably sulfuric acid or an alkaline earth metal salt of sulfuric acid.

[0072] <B-2 component: AS resin> The AS resin used in the present invention is a thermoplastic copolymer obtained by copolymerizing a vinyl cyanide compound and an aromatic vinyl compound. As such a vinyl cyanide compound, acrylonitrile can be preferably used in particular. As the aromatic vinyl compound, styrene and α-methylstyrene can be preferably used. As the ratio of each component in the AS resin, when the whole is 100% by weight, the vinyl cyanide compound is preferably 5 to 50% by weight, more preferably 15 to 35% by weight, and the aromatic vinyl compound is preferably 95 to 50% by weight, more preferably 85 to 65% by weight. Further, other copolymerizable vinyl compounds described above can be mixed and used with these vinyl compounds, and the content ratio thereof is preferably 15% by weight or less in the AS resin component. Also, various conventionally known initiators, chain transfer agents, etc. used in the reaction can be used as necessary.

[0073] Such AS resin may be produced by any of bulk polymerization, suspension polymerization, and emulsion polymerization methods, but is preferably produced by bulk polymerization. Also, the copolymerization method may be either one-step copolymerization or multi-step copolymerization. Further, the reduced viscosity of such AS resin is preferably 0.2 to 1.0 dl / g, more preferably 0.3 to 0.5 dl / g. The reduced viscosity is measured in an environment of 30 °C using an Ubbelohde viscometer for a solution prepared by accurately weighing 0.25 g of AS resin and dissolving it in 50 ml of dimethylformamide over 2 hours. Note that a viscometer with a solvent flow-down time of 20 to 100 seconds is used. The reduced viscosity is determined from the flow-down seconds of the solvent (t 0 ) and the flow-down seconds of the solution (t) by the following formula. Reduced viscosity (η sp / C) = {(t / t 0 ) - 1} / 0.5 When the reduced viscosity is less than 0.2 dl / g, the impact may decrease, and when it exceeds 1.0 dl / g, the fluidity may deteriorate.

[0074] <B - Component: MBS Resin> The MBS resin used in the present invention is a methyl methacrylate - butadiene - styrene copolymer. Such copolymer is a graft polymer, and a graft polymer having a core - shell structure is more preferable. Also, the content of methyl methacrylate in the MBS resin is preferably 10% by weight or more, more preferably 15% by weight or more, in 100% by weight of the graft component (in the case of a core - shell type polymer, in 100% by weight of the shell). In the core - shell type graft polymer, the particle diameter of the core is preferably 240 to 300 nm in terms of weight - average particle diameter, more preferably 250 to 290 nm, and even more preferably 260 to 280 nm. In the range of 240 to 300 nm, better impact strength may be achieved. Also, the particle size distribution is desirably of a multi - dispersed type having two peaks, and a multi - dispersed type having two peaks around 100 nm and 300 nm is particularly preferable, and better impact strength may be achieved than a single - peak, mono - dispersed type.

[0075] The MBS resin may be produced by any polymerization method such as bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization, and the copolymerization method may be either one-stage grafting or multi-stage grafting. It may also be a mixture with a copolymer of only the graft component by-produced during production. Furthermore, as the polymerization method, in addition to the general emulsion polymerization method, a soap-free polymerization method using an initiator such as potassium persulfate, a seed polymerization method, a two-stage swelling polymerization method, etc. can be mentioned. Also, in the suspension polymerization method, a method of separately holding the aqueous phase and the monomer phase and accurately supplying both to a continuous disperser and controlling the particle size by the rotation speed of the disperser, and a method of supplying the monomer phase through a small-diameter orifice or a porous filter with a diameter of several to several tens of μm in an aqueous liquid having dispersibility in a continuous production method to control the particle size, etc. may be carried out. In the case of a core-shell type graft polymer, the reaction may be either one-stage or multi-stage for both the core and the shell.

[0076] Such polymers are commercially available and can be easily obtained. However, it is better that the total amount of sodium ions and potassium ions contained in the polymer is small, and advantages such as good thermal stability and hydrolysis resistance can be obtained, and the deterioration of mechanical properties is suppressed.

[0077] The content of component B is 1 to 50 parts by weight, preferably 2 to 48 parts by weight, more preferably 3 to 46 parts by weight, in a total of 100 parts by weight of components A and B. If the content of component B is less than 1 part by weight, the impact resistance is not improved, and if it exceeds 50 parts by weight, the antiviral property is not exhibited.

[0078] <Component C: Polyetheresteramide> The antiviral polycarbonate resin composition of the present invention contains a polyether ester amide as component C. Such a polyether ester amide is one in which a polyamide component and a polyester component are ester-bonded via a dicarboxylic acid, and a polyether ester amide derived from a polyamide having carboxy groups at both ends and an ethylene oxide adduct of bisphenols is preferred. The number average molecular weight of the polyamide having carboxy groups at both ends is preferably 500 to 5000, more preferably 500 to 3000. When the number average molecular weight is less than 500, the heat resistance of the polyether ester amide itself may decrease, and when it exceeds 5000, the reactivity may decrease, resulting in an increase in the production cost of the polyether ester amide. The number average molecular weight of the ethylene oxide adduct of bisphenols is preferably 1600 to 3000, and it is more preferable to use one having 32 to 60 moles of ethylene oxide. When the number average molecular weight is less than 1600, the antistatic property may be insufficient, and when it exceeds 3000, the reactivity may decrease, resulting in an increase in the production cost of the polyether ester amide. The production method of the polyether ester amide is not particularly limited, and a known method can be used. For example, a method in which an amide-forming monomer and a dicarboxylic acid are reacted to form a polyamide having carboxy groups at both ends, and an ethylene oxide adduct of bisphenols is added thereto, and a polymerization reaction is carried out under high temperature and reduced pressure can be mentioned.

[0079] The content of component C is 1 to 60 parts by weight, preferably 2 to 45 parts by weight, more preferably 3 to 30 parts by weight, based on 100 parts by weight in total of components A and B. When the content of component C is less than 1 part by weight, not only sufficient antiviral properties are not exhibited, but also stable antistatic properties cannot be obtained. When it exceeds 60 parts by weight, the impact resistance decreases.

[0080] <Component D: Surfactant> The antiviral polycarbonate resin composition of the present invention contains a surfactant as component D. Examples of such surfactants include anionic surfactants, cationic surfactants, nonionic surfactants, and amphoteric surfactants. In order to exhibit antiviral properties, an anionic surfactant is preferred. Examples of anionic surfactants include sodium alkyl sulfonate, sodium alkylbenzene sulfonate, and alkyl phosphate. In order to exhibit antiviral properties, sodium alkylbenzene sulfonate having a linear alkyl group with 4 to 20 carbon atoms is preferred.

[0081] The content of component D is 0.2 to 30 parts by weight, preferably 0.4 to 20 parts by weight, more preferably 0.6 to 10 parts by weight, based on 100 parts by weight in total of components A and B. If the content of component D is less than 0.2 parts by weight, antiviral properties and antistatic properties will not be exhibited. If it exceeds 30 parts by weight, the impact resistance will decrease.

[0082] <Component E: At least one selected from the group consisting of talc, mica, bromine-containing aromatic compounds, and antimony> The antiviral polycarbonate resin composition of the present invention contains at least one selected from the group consisting of talc, mica, bromine-containing aromatic compounds, and antimony as component E.

[0083] (Talc) The talc in the present invention is magnesium hydrosilicate in terms of chemical composition, and generally is represented by the chemical formula 4SiO 2 ·3MgO·2H 2 O, and is usually scaly particles having a layered structure. In terms of composition, it is composed of 56 to 65% by weight of SiO 2 , 28 to 35% by weight of MgO, and about 5% by weight of H 2 O. As other minor components, Fe 2 O 3 is 0.03 to 1.2% by weight, Al 2 O 3 is 0.05 to 1.5% by weight, CaO is 0.05 to 1.2% by weight, K 2 O is 0.2% by weight or less, Na2 It contains 0.2% by weight or less of O, etc. The particle size of talc preferably has an average particle size measured by the sedimentation method in the range of 0.1 to 15 μm (more preferably 0.2 to 12 μm, still more preferably 0.3 to 10 μm, and particularly preferably 0.5 to 5 μm). Further, it is particularly preferable to use talc having a bulk density of 0.5 (g / cm 3 ) or more as a raw material. The average particle size of talc refers to D50 (median diameter of particle size distribution) measured by the X-ray transmission method, which is one of the liquid phase sedimentation methods. Specific examples of the apparatus for performing such measurement include Sedigraph 5100 manufactured by Micromeritics.

[0084] Also, there is no particular limitation on the manufacturing method when pulverizing talc from the raw stone, and axial flow mill method, annular mill method, roll mill method, ball mill method, jet mill method, container rotation type compression shear type mill method, etc. can be used. Further, the pulverized talc is preferably classified by various classifiers so that the particle size distribution is uniform. There is no particular limitation on the classifier, and examples include impact type inertial force classifier (such as variable impactor), Coandă effect utilization type inertial force classifier (such as elbow jet), centrifugal field classifier (multi-stage cyclone, microplex, dispersion separator, acucut, turbo classifier, turbo plex, micron separator, and super separator, etc.). Further, talc is preferably in an aggregated state in terms of its handleability, etc., and such manufacturing methods include a method by degassing compression, a method of using a flocculant and compressing, etc. In particular, the method by degassing compression is preferable in that it is simple and does not mix unnecessary flocculant resin components into the resin composition of the present invention.

[0085] (Mica) Mica with an average particle size measured by the microtrack laser diffraction method of 10 to 100 μm can preferably be used. More preferably, it has an average particle size of 20 to 50 μm. If the average particle size of mica is less than 10 μm, the improvement effect on rigidity may not be sufficient. If it exceeds 100 μm, the improvement in rigidity may not be sufficient, and the mechanical strength such as impact characteristics may also decrease significantly. Mica with a thickness of 0.01 to 1 μm measured by electron microscope observation can preferably be used. More preferably, the thickness is 0.03 to 0.3 μm. The aspect ratio is preferably 5 to 200, more preferably 10 to 100. The mica to be used is preferably muscovite mica, and its Mohs hardness is about 3. Muscovite mica can achieve higher rigidity and strength compared to other micas such as fluorophlogopite, and solve the problems of the present invention at a better level. Also, as the pulverization method of mica, it may be manufactured by either a dry pulverization method or a wet pulverization method. The dry pulverization method is lower in cost and more common, while the wet pulverization method is effective for pulverizing mica thinner and finer, and as a result, the effect of improving the rigidity of the resin composition is higher.

[0086] <Bromine-containing aromatic compound> Examples of the bromine-containing aromatic compound used in the present invention include brominated polycarbonate-based flame retardants and brominated epoxy-based flame retardants. In the present invention, brominated polycarbonate-based flame retardants are preferred from the viewpoint of heat resistance. The brominated polycarbonate-based flame retardant preferably has a structural unit represented by the following formula (4) of at least 60 mol%, more preferably at least 80 mol% of all the structural units, and particularly preferably a brominated polycarbonate compound substantially composed of the structural unit represented by the following formula (4).

[0087]

Chemical formula

[0088] (In the above general formula (4), X is a bromine atom, R is an alkylene group having 1 to 4 carbon atoms, an alkylidene group having 1 to 4 carbon atoms or -SO 2 -. ) Also, in such formula (4), preferably, R is a methylene group, an ethylene group, an isopropylidene group, -SO 2 -, more preferably an isopropylidene group.

[0089] The brominated polycarbonate-based compound preferably has few remaining chloroformate group terminals and the terminal chlorine amount is 0.3 ppm or less, more preferably 0.2 ppm or less. Such terminal chlorine amount can be determined by dissolving a sample in methylene chloride, adding 4-(p-nitrobenzyl)pyridine to react with terminal chlorine (terminal chloroformate), and measuring this with an ultraviolet-visible spectrophotometer (U-3200 manufactured by Hitachi, Ltd.). When the terminal chlorine amount is 0.3 ppm or less, the thermal stability of the polycarbonate resin composition becomes better, and molding at a higher temperature becomes possible. As a result, a resin composition with more excellent molding processability may be provided.

[0090] Also, the brominated polycarbonate-based compound preferably has few remaining hydroxyl group terminals. More specifically, with respect to 1 mol of the structural unit of the brominated polycarbonate-based compound, the terminal hydroxyl group amount is preferably 0.0005 mol or less, more preferably 0.0003 mol or less. The terminal hydroxyl group amount can be determined by dissolving a sample in deuterochloroform and 1 measuring it by the H-NMR method. With such a terminal hydroxyl group amount, the thermal stability of the polycarbonate resin composition may be further improved.

[0091] The specific viscosity of the brominated polycarbonate-based compound is preferably 0.015 to 0.1, more preferably 0.015 to 0.08. The specific viscosity of the brominated polycarbonate-based compound is calculated according to the above-described specific viscosity calculation formula used when calculating the viscosity average molecular weight of the polycarbonate resin which is the component A of the present invention described above.

[0092] <Antimony> Examples of antimony used in the present invention include antimony trioxide Sb 2 O 3 , antimony pentoxide xNa2 O·Sb 2 O 5 ·yH 2 O(x = 0 to 1, y = 0 to 4) can be mentioned. Antimony preferably has a particle size of 0.02 to 5 μm. Antimony may be surface-treated with an epoxy compound, a silane compound, an isocyanate compound, a titanate compound, etc.

[0093] The content of component E is 0.1 to 60 parts by weight, preferably 0.5 to 45 parts by weight, more preferably 1 to 30 parts by weight, based on 100 parts by weight in total of components A and B. If the content of component E is less than 0.1 part by weight, antiviral properties will not be exhibited, and if it exceeds 60 parts by weight, the impact resistance will decrease.

[0094] (Other additives) (i) Drip inhibitor The antiviral polycarbonate resin composition of the present invention can contain a drip inhibitor. When such a drip inhibitor is contained, it is possible to achieve good flame retardancy without impairing the physical properties of the molded product.

[0095] Examples of the drip inhibitor include fluorine-containing polymers having fibril-forming ability. Examples of such polymers include polytetrafluoroethylene, tetrafluoroethylene-based copolymers (e.g., tetrafluoroethylene / hexafluoropropylene copolymer, etc.), partially fluorinated polymers as shown in U.S. Patent No. 4379910, polycarbonate resins produced from fluorinated diphenols, etc. Among them, polytetrafluoroethylene (hereinafter sometimes referred to as PTFE) is preferred.

[0096] PTFE having fibril-forming ability has an extremely high molecular weight and tends to be combined with each other to form fibers by external actions such as shear force. Its molecular weight is 1 million to 10 million, preferably 2 million to 9 million in terms of the number average molecular weight determined from the standard specific gravity. Such PTFE can be used not only in a solid form but also in an aqueous dispersion form. Further, PTFE having such fibril-forming ability can be used as a PTFE mixture in a mixed form with other resins in order to improve the dispersibility in the resin and further obtain better flame retardancy and mechanical properties.

[0097] Examples of commercially available products of such PTFE having fibril-forming ability include "Polyflon MPA FA series (such as FA-500H and FA-5601)" of Daikin Industries, Ltd. Examples of commercially available products of the aqueous dispersion of PTFE include, as a representative, "Polyflon PTFE D series (such as D-111 and D-210C)" manufactured by Daikin Industries, Ltd.

[0098] As the mixed-form PTFE, there are (1) a method of mixing an aqueous dispersion of PTFE and an aqueous dispersion or solution of an organic polymer and performing coprecipitation to obtain a co-aggregated mixture (the methods described in JP-A-60-258263, JP-A-63-154744, etc.), (2) a method of mixing an aqueous dispersion of PTFE and dried organic polymer particles (the method described in JP-A-4-272957), (3) a method of uniformly mixing an aqueous dispersion of PTFE and an organic polymer particle solution and simultaneously removing the respective media from such a mixture (the methods described in JP-A-06-220210, JP-A-08-188653, etc.), (4) a method of polymerizing a monomer that forms an organic polymer in an aqueous dispersion of PTFE (the method described in JP-A-9-95583), and (5) a method of uniformly mixing an aqueous dispersion of PTFE and an organic polymer dispersion, further polymerizing a vinyl monomer in the mixed dispersion, and then obtaining a mixture (the method described in JP-A-11-29679, etc.). As commercially available products of these mixed-form PTFEs, "Metablen A series (A-3750 and A-3800)" manufactured by Mitsubishi Chemical Corporation can be mentioned.

[0099] As the proportion of PTFE in the mixed form, in 100% by weight of the PTFE mixture, 1 to 60% by weight of PTFE is preferable, and more preferably 5 to 55% by weight. When the proportion of PTFE is within such a range, good dispersibility of PTFE may be achieved.

[0100] In addition, as the styrene monomer used in the organic polymer used in the polytetrafluoroethylene-based mixture of the present invention, styrene which may be substituted with one or more groups selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, and a halogen, for example, ortho-methylstyrene, meta-methylstyrene, para-methylstyrene, dimethylstyrene, ethyl-styrene, para-tert-butylstyrene, methoxystyrene, fluorostyrene, monobromostyrene, dibromostyrene, and tribromostyrene, vinylxylene, vinylnaphthalene are exemplified, but not limited thereto. The styrene monomer can be used alone or in a mixture of two or more kinds.

[0101] The acrylic monomer used in the organic polymer used in the polytetrafluoroethylene-based mixture in the present invention includes a (meth)acrylate derivative which may be substituted. Specifically, as the acrylic monomer, a (meth)acrylate derivative which may be substituted with one or more groups selected from the group consisting of an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 8 carbon atoms, an aryl group, and a glycidyl group, for example, (meth)acrylonitrile, methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, butyl (meth)acrylate, amyl (meth)acrylate, hexyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, cyclohexyl (meth)acrylate, octyl (meth)acrylate, dodecyl (meth)acrylate, phenyl (meth)acrylate, benzyl (meth)acrylate and glycidyl (meth)acrylate, maleimide which may be substituted with an alkyl group having 1 to 6 carbon atoms or an aryl group, for example, maleimide, N-methyl-maleimide and N-phenyl-maleimide, maleic acid, phthalic acid and itaconic acid are exemplified, but not limited thereto. The acrylic monomer can be used alone or in a mixture of two or more kinds. Among these, (meth)acrylonitrile is preferable.

[0102] The amount of units derived from acrylic monomers contained in the organic polymer used for the coating layer is preferably 8 to 11 parts by weight, more preferably 8 to 10 parts by weight, still more preferably 8 to 9 parts by weight, with respect to 100 parts by weight of units derived from styrene monomers. If the amount of units derived from acrylic monomers is less than 8 parts by weight, the coating strength may decrease, and if it is more than 11 parts by weight, the surface appearance of the molded product may deteriorate.

[0103] The polytetrafluoroethylene-based mixture in the present invention preferably has a residual moisture content of 0.5% by weight or less, more preferably 0.2 to 0.4% by weight, still more preferably 0.1 to 0.3% by weight. If the amount of residual moisture is more than 0.5% by weight, it may have an adverse effect on the flame retardancy.

[0104] The production process of the polytetrafluoroethylene-based mixture in the present invention includes a step of forming a coating layer containing one or more monomers selected from the group consisting of styrene monomers and acrylic monomers outside the branched polytetrafluoroethylene in the presence of an initiator. Further, it preferably includes a step of drying so that the residual moisture content becomes 0.5% by weight or less, preferably 0.2 to 0.4% by weight, more preferably 0.1 to 0.3% by weight, after the step of forming the coating layer. The drying step can be carried out using a method known in the art, such as a hot air drying or vacuum drying method.

[0105] The initiator used in the polytetrafluoroethylene-based mixture in the present invention can be used without limitation as long as it is used in the polymerization reaction of styrene-based and / or acrylic monomers. Examples of the initiator include, but are not limited to, cumyl hydroperoxide, di-tert-butyl peroxide, benzoyl peroxide, hydrogen peroxide, and potassium peroxide. In the polytetrafluoroethylene-based mixture of the present invention, one or more of the above initiators can be used according to the reaction conditions. The amount of the initiator is freely selected within the range used in consideration of the amount of polytetrafluoroethylene and the type / amount of the monomer, and it is preferably 0.15 to 0.25 parts by weight based on the amount of the total composition.

[0106] The polytetrafluoroethylene-based mixture in the present invention was produced by the suspension polymerization method according to the following procedure. First, water and branched polytetrafluoroethylene dispersion (solid concentration: 60%, polytetrafluoroethylene particle size: 0.15 to 0.3 μm) were placed in a reactor, and then acrylic monomer, styrene monomer, and cumene hydroperoxide as a water-soluble initiator were added while stirring, and the reaction was carried out at 80 to 90 °C for 9 hours. After the reaction was completed, water was removed by centrifuging for 30 minutes with a centrifuge to obtain a paste-like product. Then, the paste of the product was dried at 80 to 100 °C for 8 hours with a hot air dryer. Then, the dried product was pulverized to obtain the polytetrafluoroethylene-based mixture of the present invention.

[0107] Such a suspension polymerization method does not require a polymerization step by emulsion dispersion in an emulsion polymerization method exemplified in Patent Publication No. 3469391, etc., and thus does not require an emulsifier and electrolyte salts for coagulating and precipitating the latex after polymerization. Further, in a polytetrafluoroethylene mixture produced by an emulsion polymerization method, the emulsifier and electrolyte salts in the mixture are likely to be mixed and difficult to remove, so it is difficult to reduce sodium ions and potassium ions derived from such emulsifiers and electrolyte salts. Since the polytetrafluoroethylene-based mixture used in the present invention is produced by a suspension polymerization method, such emulsifiers and electrolyte salts are not used, so that the contents of sodium ions and potassium ions in the mixture can be reduced, and the thermal stability and hydrolysis resistance can be improved.

[0108] Also, in the present invention, coated branched PTFE can be used as an anti-drip agent. The coated branched PTFE is a polytetrafluoroethylene-based mixture composed of branched polytetrafluoroethylene particles and an organic polymer, and has a coating layer composed of an organic polymer, preferably a polymer containing units derived from a styrene-based monomer and / or units derived from an acrylic-based monomer, on the outside of the branched polytetrafluoroethylene. The coating layer is formed on the surface of the branched polytetrafluoroethylene. Further, the coating layer preferably contains a copolymer of a styrene-based monomer and an acrylic-based monomer.

[0109] The polytetrafluoroethylene contained in the coated branched PTFE is branched polytetrafluoroethylene. When the contained polytetrafluoroethylene is not branched polytetrafluoroethylene, the anti-dripping effect when the addition amount of polytetrafluoroethylene is small becomes insufficient. The branched polytetrafluoroethylene is in particulate form, preferably having a particle diameter of 0.1 to 0.6 μm, more preferably 0.3 to 0.5 μm, and even more preferably 0.3 to 0.4 μm. When the particle diameter is smaller than 0.1 μm, the surface appearance of the molded product is excellent, but it is difficult to commercially obtain polytetrafluoroethylene having a particle diameter smaller than 0.1 μm. Also, when the particle diameter is larger than 0.6 μm, the surface appearance of the molded product may deteriorate. The number average molecular weight of the polytetrafluoroethylene used in the present invention is 1×10 4 ~1×10 7 is preferable, and more preferably 2×10 6 ~9×10 6 and generally, polytetrafluoroethylene having a higher molecular weight is more preferable in terms of stability. Either the powder or dispersion form can be used. The content of the branched polytetrafluoroethylene in the coated branched PTFE is preferably 20 to 60 parts by weight, more preferably 40 to 55 parts by weight, even more preferably 47 to 53 parts by weight, particularly preferably 48 to 52 parts by weight, and most preferably 49 to 51 parts by weight with respect to 100 parts by weight of the total weight of the coated branched PTFE. When the proportion of the branched polytetrafluoroethylene is within such a range, good dispersibility of the branched polytetrafluoroethylene may be achieved.

[0110] The content of the anti-dripping agent is preferably 0.1 to 2 parts by weight, more preferably 0.2 to 1.5 parts by weight with respect to 100 parts by weight of the total of Component A and Component B. When the content is less than 0.1 part by weight, sufficient flame retardancy may not be exhibited, and when it exceeds 2 parts by weight, the impact resistance may decrease. Note that the content of the anti-dripping agent indicates the amount of the net anti-dripping agent, and in the case of PTFE in a mixed form, it indicates the amount of the net PTFE.

[0111] (ii) Phosphorus-based stabilizer The antiviral polycarbonate resin composition of the present invention can contain a phosphorus-based stabilizer. By containing such a phosphorus-based stabilizer, thermal decomposition during molding processing is suppressed, which is effective in maintaining good impact resistance and flame retardancy.

[0112] Examples of the phosphorus-based stabilizer include phosphorous acid, phosphoric acid, phosphonous acid, phosphonic acid and their esters, and tertiary phosphine.

[0113] Specifically, examples of phosphite compounds include triphenyl phosphite, tris(nonylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, didecyl monophenyl phosphite, dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, 2,2-methylenebis(4,6-di-tert-butylphenyl) octyl phosphite, tris(diethylphenyl) phosphite, tris(di-iso-propylphenyl) phosphite, tris(di-n-butylphenyl) phosphite, tris(2,4-di-tert-butylphenyl) phosphite, tris(2,6-di-tert-butylphenyl) phosphite, distearyl pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-ethylphenyl) pentaerythritol diphosphite, phenyl bisphenol A pentaerythritol diphosphite, bis(nonylphenyl) pentaerythritol diphosphite, dicyclohexyl pentaerythritol diphosphite, and the like.

[0114] As other phosphite compounds, those that react with dihydric phenols and have a cyclic structure can also be used. For example, 2,2'-methylenebis(4,6-di-tert-butylphenyl)(2,4-di-tert-butylphenyl) phosphite, 2,2'-methylenebis(4,6-di-tert-butylphenyl)(2-tert-butyl-4-methylphenyl) phosphite, 2,2'-methylenebis(4-methyl-6-tert-butylphenyl)(2-tert-butyl-4-methylphenyl) phosphite, 2,2'-ethylidenebis(4-methyl-6-tert-butylphenyl)(2-tert-butyl-4-methylphenyl) phosphite, etc. can be mentioned.

[0115] Examples of phosphate compounds include tributyl phosphate, trimethyl phosphate, tricresyl phosphate, triphenyl phosphate, trichlorophenyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, diphenyl monoorthoxenyl phosphate, tributoxyethyl phosphate, dibutyl phosphate, dioctyl phosphate, diisopropyl phosphate, octadecyl phosphate, etc. Octadecyl phosphate, triphenyl phosphate, and trimethyl phosphate are preferred.

[0116] Examples of the phosphonite compound include tetrakis(2,4-di-tert-butylphenyl)-4,4'-biphenylenediphosphonite, tetrakis(2,4-di-tert-butylphenyl)-4,3'-biphenylenediphosphonite, tetrakis(2,4-di-tert-butylphenyl)-3,3'-biphenylenediphosphonite, tetrakis(2,6-di-tert-butylphenyl)-4,4'-biphenylenediphosphonite, tetrakis(2,6-di-tert-butylphenyl)-4,3'-biphenylenediphosphonite, tetrakis(2,6-di-tert-butylphenyl)-3,3'-biphenylenediphosphonite, bis(2,4-di-tert-butylphenyl)-4-phenyl-phenylphosphonite, bis(2,4-di-tert-butylphenyl)-3-phenyl-phenylphosphonite, bis(2,6-di-n-butylphenyl)-3-phenyl-phenylphosphonite, bis(2,6-di-tert-butylphenyl)-4-phenyl-phenylphosphonite, bis(2,6-di-tert-butylphenyl)-3-phenyl-phenylphosphonite, and the like. Among them, tetrakis(di-tert-butylphenyl)-biphenylenediphosphonite and bis(di-tert-butylphenyl)-phenyl-phenylphosphonite are preferable, and tetrakis(2,4-di-tert-butylphenyl)-biphenylenediphosphonite and bis(2,4-di-tert-butylphenyl)-phenyl-phenylphosphonite are more preferable. Such a phosphonite compound can be preferably used in combination with a phosphite compound having an aryl group substituted with two or more of the above alkyl groups.

[0117] Examples of the phosphonate compound include dimethyl benzenephosphonate, diethyl benzenephosphonate, dipropyl benzenephosphonate, and the like.

[0118] Examples of the tertiary phosphine include triethylphosphine, tripropylphosphine, tributylphosphine, trioctylphosphine, triamylphosphine, dimethylphenylphosphine, dibutylphenylphosphine, diphenylmethylphosphine, diphenyloctylphosphine, triphenylphosphine, tri-p-tolylphosphine, trinaphthylphosphine, and diphenylbenzylphosphine. Particularly preferred tertiary phosphine is triphenylphosphine.

[0119] The above phosphorus stabilizer may be used alone or as a mixture of two or more. Among the above phosphorus stabilizers, combined use with phosphite compounds and phosphonite compounds is preferred.

[0120] The content of the phosphorus stabilizer is preferably 0.01 to 1 part by weight, more preferably 0.02 to 0.9 part by weight, based on 100 parts by weight in total of Component A and Component B. If the content is less than 0.01 part by weight, suppression of thermal decomposition during molding processing may not be sufficient and there may be no effect in maintaining impact resistance. If it exceeds 1 part by weight, thermal decomposition during molding processing may be promoted and the impact resistance may decrease.

[0121] (iii) Phenolic stabilizer The antiviral polycarbonate resin composition of the present invention can contain a phenolic stabilizer. Examples of the phenolic stabilizer generally include hindered phenol, semi-hindered phenol, and res-hindered phenol compounds. However, hindered phenol compounds are particularly preferably used from the viewpoint of applying a heat stability formulation to resins including polycarbonate resins and styrene resins.

[0122] Examples of such hindered phenol compounds include α-tocopherol, butylhydroxytoluene, sinapyl alcohol, vitamin E, octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 2-tert-butyl-6-(3'-tert-butyl-5'-methyl-2'-hydroxybenzyl)-4-methylphenyl acrylate, 2,6-di-tert-butyl-4-(N,N-dimethylaminomethyl)phenol, 3,5-di-tert-butyl-4-hydroxybenzyl phosphonate diethyl ester, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 4,4'-methylenebis(2,6-di-tert-butylphenol), 2,2'-methylenebis(4-methyl-6-cyclohexylphenol), 2,2'-dimethylene-bis(6-α-methyl-benzyl-p-cresol), 2,2'-ethylidene-bis(4,6-di-tert-butylphenol), 2,2'-butylidene-bis(4-methyl-6-tert-butylphenol), 4,4'-butylidenebis(3-methyl-6-tert-butylphenol), triethylene glycol-N-bis-3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, 1,6-hexanediol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], bis[2-tert-butyl-4-methyl 6-(3-tert-butyl-5-methyl-2-hydroxybenzyl) phenyl] terephthalate, 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1,-dimethylethyl}-2,4,8,10-tetraoxaspiro[5,5]undecane, 4,4'-thiobis(6-tert-butyl-m-cresol), 4,4'-thiobis(3-methyl-6-tert-butylphenol), 2,2'-thiobis(4-methyl-6-tert-butylphenol), bis(3,5-di-tert-butyl-4-hydroxybenzyl) sulfide, 4,4'-di-thiobis(2,6-di-tert-butylphenol), 4,4'-tri-thiobis(2,6-di-tert-butylphenol), 2,2-thiodiethylenebis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2,4-bis(n-octylthio)-6-(4-hydroxy-3,5-di-tert-butylanilino)-1,3,5-triazine, N,N'-hexamethylenebis-(3,5-di-tert-butyl-4-hydroxyhydrocinnamide), N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine, 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, tris(3,5-di-tert-butyl-4-hydroxyphenyl)isocyanurate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 1,3,5-tris2[3(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxy]ethylisocyanurate, tetrakis[methylene-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]methane, triethylene glycol-N-bis-3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate, triethylene glycol-N-bis-3-(3-tert-butyl-4-hydroxy-5-methylphenyl)acetate, 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)acetyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5,5]undecane, tetrakis[methylene-3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate]methane, 1,3,5-trimethyl-2,4,6-tris(3-tert-butyl-4-hydroxy-5-methylbenzyl)benzene, and tris(3-tert-butyl-4-hydroxy-5-methylbenzyl)isocyanurate, etc. are exemplified.,

[0123] Among the above compounds, tetrakis[methylene-3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate]methane, octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, and 3,9-bis[2-{3-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5,5]undecane are preferably used. The above phenolic stabilizers can be used alone or in combination of two or more.

[0124] The content of the phenolic stabilizer is preferably 0.01 to 1 part by weight, more preferably 0.02 to 0.9 part by weight, based on 100 parts by weight in total of Component A and Component B. If the content is less than 0.01 part by weight, the suppression of thermal decomposition during molding processing may not be sufficient and the effect of maintaining impact resistance may not be seen. If it exceeds 1 part by weight, thermal decomposition during molding processing may be promoted and the impact resistance may decrease.

[0125] (iv) Release agent The antiviral polycarbonate resin composition of the present invention can contain a release agent within the range where the effects of the present invention are exhibited, for the purpose of improving mold release properties during molding processing and reducing distortion of molded products.

[0126] As such a release agent, known ones can be used. For example, saturated fatty acid esters, unsaturated fatty acid esters, polyolefin waxes (such as polyethylene waxes, 1-alkene polymers, etc. Those modified with functional group-containing compounds such as acid modification can also be used), silicone compounds (such as silicone oil and organosiloxane), fluorine compounds (such as fluorine oil represented by polyfluoroalkyl ether), paraffin wax, beeswax, etc. Among them, fatty acid esters are preferably mentioned as the release agent.

[0127] Such fatty acid esters are esters of aliphatic alcohols and aliphatic carboxylic acids. Such aliphatic alcohols may be monohydric alcohols or polyhydric alcohols with two or more hydroxyl groups, and preferably have 3 to 32 carbon atoms, more preferably 5 to 30 carbon atoms. Examples of such monohydric alcohols include dodecanol, tetradecanol, hexadecanol, octadecanol, eicosanol, tetracosanol, ceryl alcohol, and triacontanol. Examples of such polyhydric alcohols include pentaerythritol, dipentaerythritol, tripentaerythritol, polyglycerol (triglycerol to hexaglycerol), ditrimethylolpropane, xylitol, sorbitol, and mannitol. In the fatty acid esters of the present invention, polyhydric alcohols are more preferred.

[0128] On the other hand, the aliphatic carboxylic acid preferably has 3 to 32 carbon atoms, particularly preferably an aliphatic carboxylic acid having 10 to 22 carbon atoms. Examples of such aliphatic carboxylic acids include saturated aliphatic carboxylic acids such as decanoic acid, undecanoic acid, dodecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid (palmitic acid), heptadecanoic acid, octadecanoic acid (stearic acid), nonadecanoic acid, behenic acid, eicosanoic acid, and docosanoic acid, and unsaturated aliphatic carboxylic acids such as palmitoleic acid, oleic acid, linoleic acid, linolenic acid, eicosenoic acid, eicosapentaenoic acid, and cetoleic acid. Among the above, the aliphatic carboxylic acid preferably has 14 to 20 carbon atoms. Among them, saturated aliphatic carboxylic acids are more preferred. Particularly, stearic acid and palmitic acid are even more preferred.

[0129] The above aliphatic carboxylic acids such as stearic acid and palmitic acid are usually produced from natural oils and fats such as animal fats typified by beef tallow and lard, and vegetable oils typified by palm oil and sunflower oil. Therefore, these aliphatic carboxylic acids are usually mixtures containing other carboxylic acid components with different numbers of carbon atoms. Thus, in the production of the fatty acid esters of the present invention, aliphatic carboxylic acids produced from such natural oils and fats and in the form of mixtures containing other carboxylic acid components, particularly stearic acid and palmitic acid, are preferably used.

[0130] The above fatty acid ester may be either a partial ester or a full ester (complete ester). However, in the case of a partial ester, the hydroxyl value is usually high, which easily induces decomposition of the resin at high temperatures. Therefore, a full ester is more preferable. From the viewpoint of thermal stability, the acid value of such a fatty acid ester is preferably 20 or less, more preferably 4 - 20, and even more preferably 4 - 12. Note that the acid value can substantially be 0. In addition, the hydroxyl value of such a fatty acid ester is preferably 0.1 - 30, and the iodine value of such a fatty acid ester is preferably 10 or less. Note that the iodine value can substantially be 0. These properties can be determined by the methods specified in JIS K 0070. The above mold release agent may be used alone or as a mixture of two or more kinds.

[0131] The content of the mold release agent is preferably 0.01 - 2 parts by weight, more preferably 0.02 - 1 part by weight, based on 100 parts by weight in total of Component A and Component B. If the content is less than 0.01 part by weight, good mold release properties may not be exhibited, and if it exceeds 2 parts by weight, the impact resistance may decrease.

[0132] (v) Ultraviolet absorber The antiviral polycarbonate resin composition of the present invention can contain an ultraviolet absorber for the purpose of imparting light resistance. Examples of the ultraviolet absorber include benzophenone-based ultraviolet absorbers, cyclic iminoester-based ultraviolet absorbers, cyanoacrylate-based ultraviolet absorbers, benzotriazole-based ultraviolet absorbers, triazine-based ultraviolet absorbers, and the like. Among them, benzotriazole-based ultraviolet absorbers and triazine-based ultraviolet absorbers are preferred.

[0133] Examples of benzotriazole-based ultraviolet absorbers include 2-(2-hydroxy-5-methylphenyl)benzotriazole, 2-(2-hydroxy-5-tert-octylphenyl)benzotriazole, 2-(2-hydroxy-3,5-dicumylphenyl)phenylbenzotriazole, 2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-5-chlorobenzotriazole, 2,2'-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol], 2-(2-hydroxy-3,5-di-tert-butylphenyl)benzotriazole, 2-(2-hydroxy-3,5-di-tert-butylphenyl)-5-chlorobenzotriazole, 2-(2-hydroxy-3,5-di-tert-amylphenyl)benzotriazole, 2-(2-hydroxy-5-tert-octylphenyl)benzotriazole, 2-(2-hydroxy-5-tert-butylphenyl)benzotriazole, 2-(2-hydroxy-4-octoxyphenyl)benzotriazole, 2,2'-methylenebis(4-cumyl-6-benzotriazolephenyl), 2,2'-p-phenylenebis(1,3-benzoxazin-4-one), and 2-[2-hydroxy-3-(3,4,5,6-tetrahydrophthalimidomethyl)-5-methylphenyl]benzotriazole. Also exemplified are polymers having a 2-hydroxyphenyl-2H-benzotriazole skeleton, such as copolymers of 2-(2'-hydroxy-5-methacryloxyethylphenyl)-2H-benzotriazole and vinyl monomers copolymerizable with the monomer, and copolymers of 2-(2'-hydroxy-5-acryloxyethylphenyl)-2H-benzotriazole and vinyl monomers copolymerizable with the monomer.

[0134] Examples of triazine-based ultraviolet absorbers include hydroxyphenyltriazine-based compounds such as 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-hexyloxyphenol, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-methyloxyphenol, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-ethyloxyphenol, 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-propyloxyphenol, and 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-butyloxyphenol. Further, compounds in which the phenyl group of the above-exemplified hydroxyphenyltriazine-based compounds, such as 2-(4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-hexyloxyphenol, is a 2,4-dimethylphenyl group are also exemplified. The above ultraviolet absorber may be used alone or as a mixture of two or more.

[0135] (vi) Dyes and pigments The antiviral polycarbonate resin composition of the present invention contains various dyes and pigments and can provide molded articles exhibiting various design properties. By blending a fluorescent brightening agent or other fluorescent dyes that emit light, a better design effect utilizing the emission color can be imparted. Further, a resin composition having coloring with a very small amount of dyes and pigments and vivid color developability can also be provided.

[0136] Examples of the fluorescent dyes (including fluorescent brightening agents) in the present invention include coumarin-based fluorescent dyes, benzopyran-based fluorescent dyes, perylene-based fluorescent dyes, anthraquinone-based fluorescent dyes, thioindigo-based fluorescent dyes, xanthene-based fluorescent dyes, xanthone-based fluorescent dyes, thioxanthene-based fluorescent dyes, thiazine-based fluorescent dyes, and diaminostilbene-based fluorescent dyes. Among these, coumarin-based fluorescent dyes, benzopyran-based fluorescent dyes, and perylene-based fluorescent dyes, which have good heat resistance and little deterioration during the molding process of the polycarbonate resin, are preferable.

[0137] Examples of dyes other than the above fluorescent dyes include perylene dyes, coumarin dyes, thioindigo dyes, anthraquinone dyes, thioxanthone dyes, ferrocyanides such as Prussian blue, perinone dyes, quinoline dyes, quinacridone dyes, dioxazine dyes, isoindolinone dyes, and phthalocyanine dyes. Furthermore, the resin composition of the present invention can also be blended with metallic pigments to obtain a good metallic color. As the metallic pigment, those having a metal coating or a metal oxide coating on various plate-like fillers are suitable.

[0138] (vii) Other resins and elastomers In the antiviral polycarbonate resin composition of the present invention, other resins and elastomers can also be contained in a small proportion within the range where the effects of the present invention are exhibited.

[0139] Examples of such other resins include polyester resins such as polyethylene terephthalate resin and polybutylene terephthalate resin, polyamide resin, polyimide resin, polyetherimide resin, polyurethane resin, silicone resin, polyphenylene ether resin, polyphenylene sulfide resin, polysulfone resin, polymethacrylate resin, phenol resin, and epoxy resin.

[0140] Examples of such elastomers include silicone rubber / isobutylene / isoprene rubber, ethylene / propylene rubber, acrylic elastomers, polyester elastomers, and polyamide elastomers.

[0141] (viii) Other additives In addition, in the antiviral polycarbonate resin composition, additives known per se can be blended in a small proportion for imparting various functions and improving characteristics to the molded article. These additives are in the normal blending amounts as long as they do not impair the object of the present invention.

[0142] Examples of such additives include lubricants (e.g., PTFE particles), colorants (e.g., pigments and dyes other than the above-mentioned dyes and pigments such as carbon black), light diffusing agents (e.g., acrylic cross-linked particles, silicone cross-linked particles, ultrathin glass flakes, etc.), inorganic phosphors (e.g., phosphors having aluminate as a mother crystal), crystal nucleating agents, radical generators, infrared absorbers (heat ray absorbers), and photochromic agents, etc.

[0143] <Production of antiviral polycarbonate resin composition> In order to produce the antiviral polycarbonate resin composition of the present invention, any method can be adopted. For example, components A to E and optionally other additives are sufficiently mixed using premixing means such as a V-type blender, a Henschel mixer, a mechanochemical device, and an extrusion mixer, etc., and then, if necessary, granulation of such a premix is carried out by an extrusion granulator and a briquetting machine, etc., and then melt-kneaded by a melt-kneading machine typified by a vented twin-screw extruder and then pelletized by equipment such as a pelletizer.

[0144] <Production of molded article made of antiviral polycarbonate resin composition> The antiviral polycarbonate resin composition of the present invention can usually produce various molded articles by injection molding the pellets obtained by the above-mentioned method. In such injection molding, not only the ordinary cold runner type molding method but also production by a hot runner enabling runnerless is possible. Also in injection molding, not only the ordinary molding method but also gas-assisted injection molding, injection compression molding, ultra-high speed injection molding, injection press molding, two-color molding, sandwich molding, in-mold coating molding, insert molding, foam molding (including those using supercritical fluids), rapid heating and cooling mold molding, adiabatic mold molding, and in-mold remelting molding, and molding methods composed of combinations thereof, etc. can be used.

[0145] In addition, the resin composition of the present invention can also be used in the form of various profiled extruded products, sheets, films, etc. by extrusion molding. Also, for the molding of sheets and films, an inflation method, a calendering method, a casting method, etc. can also be used. Furthermore, it is also possible to form it into a heat-shrinkable tube by applying a specific stretching operation. Also, it is possible to form molded products from the resin composition of the present invention by rotational molding, blow molding, etc.

[0146] Furthermore, various surface treatments can be performed on the molded products formed from the resin composition. As surface treatments, decorative coating, hard coat, water / oil repellent coat, hydrophilic coat, ultraviolet absorption coat, infrared absorption coat, electromagnetic wave absorption coat, heat-generating coat, antistatic coat, static control coat, conductive coat, and various surface treatments such as metallizing (plating, chemical vapor deposition (CVD), physical vapor deposition (PVD), thermal spraying, etc.) can be performed.

[0147] <Antiviral property> The antiviral activity value against influenza virus according to ISO21702 of the test piece made of the antiviral polycarbonate resin composition of the present invention is preferably 2.0 or more, and more preferably 3.0 or more. If such an antiviral activity value is less than 2.0, the antiviral effect is insufficient. Note that the upper limit of the antiviral activity value is not particularly limited, but 4.0 is sufficient.

[0148] <Impact resistance> The notched Charpy impact strength of the test piece conditioned at 23°C in accordance with ISO179 made of the antiviral polycarbonate resin composition of the present invention is 20 kJ / m 2 or more is preferable, 30 kJ / m 2 or more is more preferable, 40 kJ / m 2 or more is even more preferable. If it is less than such a suitable range, it is difficult to apply in various applications, especially difficult to apply to a housing etc. where strength is required. Note that the upper limit of the value measured for such notched Charpy impact strength is not particularly limited except for the detection upper limit of the measuring instrument, but 100 kJ / m 2Exhibits sufficient performance below.

[0149] <Surface resistance> The surface resistivity in accordance with IEC60093 consisting of the antiviral polycarbonate resin composition of the present invention is preferably less than 10 14 and more preferably less than 10 12 If the surface resistivity is 10 14 or more, the antistatic property is insufficient. The lower limit of the surface resistivity is not particularly limited, but 10 10 is sufficient.

Examples

[0150] The present invention will be described in more detail with reference to the following examples, which do not limit the present invention. Unless otherwise specified, parts in the examples are parts by weight and % is % by weight. The evaluation was carried out according to the following method.

[0151] (Evaluation of antiviral polycarbonate resin composition) (1) Antiviral property (without pretreatment, antiviral activity value) Using a test piece (width 50 mm, length 50 mm, thickness 2 mm) obtained by cutting a square plate molded product (width 150 mm, length 150 mm, thickness 2 mm) prepared by the following method, the test was carried out under the following conditions in accordance with ISO21702. * Test virus solution concentration: 1.8×10 7 PFL / mL * Test solution inoculation amount: 0.4 mL (coated film: polyethylene film with a surface area of 16 cm 2 ) * Test environment: 25°C × 24 hours * Test virus: Influenza virus (H3N2) * Eluate: SCDLP medium The antiviral property was evaluated based on the following criteria using the antiviral activity value. Antiviral activity value = log 10 (Number of viruses after 24 hours of the unprocessed test piece) - log 10 (Number of viruses after 24 hours of the antiviral processed test piece) ○: Antiviral activity value is 3.0 or more △: Antiviral activity value is 2.0 or more and less than 3.0 ×: Antiviral activity value is less than 2.0 The antiviral processed test piece refers to a test piece made of a resin composition containing an antiviral agent (the resin compositions listed in the following examples and comparative examples). On the other hand, the unprocessed test piece refers to a test piece made of polycarbonate resin alone.

[0152] (2) Impact resistance (notched Charpy impact strength) The notched Charpy impact strength of a test piece (width 10 mm, length 80 mm, thickness 4.0 mm) prepared by the following method was measured in accordance with ISO179.

[0153] (3) Antistatic property (surface resistivity) The surface resistivity of a test piece (width 50 mm, length 50 mm, thickness 2.0 mm) prepared by the following method was measured in accordance with IEC60093. For such test pieces, the surface resistivity was measured for the untreated samples and the test pieces after the surface of the test pieces was wiped with water and left standing for 24 hours, repeated 10 times. The antistatic property was evaluated according to the following criteria. 〇: Surface resistivity is less than 1×10 12 △: Surface resistivity is 1×10 or more and less than 1×10 12 14 ×: Surface resistivity is 1×10 or more 14

[0154] [Examples 1 - 15, Comparative Examples 1 - 8] ​​​​With the composition shown in Table 1, components A to E and other components were uniformly mixed using a V-type blender to obtain a mixture. Using a vented twin-screw extruder with a screw diameter of 30 mm (manufactured by Nippon Steel Works, Ltd.; TEX30α-38.5BW-3V), such a mixture was supplied from the feed port using a measuring instrument at a predetermined ratio, and melt-kneaded at a cylinder temperature and die temperature of 240 to 260 °C, a screw rotation speed of 200 rpm, a discharge rate of 25 kg / h, and a vent vacuum degree of 3 kPa. The strand discharged from the die was cooled in a water bath and then strand-cut with a pelletizer to obtain pellets. A part of the obtained pellets was dried in a hot air circulation dryer at 80 to 120 °C for 5 hours, and then using an injection molding machine (manufactured by Sumitomo Heavy Industries, Ltd.; SE130EV-A), molded products for various evaluations were produced at a cylinder temperature of 240 to 260 °C and a mold temperature of 60 °C. The results of each evaluation are shown in Table 1 and Table 2.

[0155] In addition, each component with symbol notation in Table 1 and Table 2 is as follows. (Component A) A-1: Aromatic polycarbonate resin [manufactured by Teijin Ltd.; Panlite L-1225WP (product name), linear aromatic polycarbonate resin powder with a viscosity average molecular weight of 22,400 having 2,2-bis(4-hydroxyphenyl)propane as the repeating backbone]

[0156] (Component B) B-1: ABS resin [manufactured by Japan A & L Co., Ltd.: UT-61 (product name), acrylonitrile-butadiene-styrene copolymer produced by the bulk polymerization method] B-2: AS resin [manufactured by Japan A & L Co., Ltd.: BS-207 (product name), acrylonitrile-styrene copolymer with a weight average molecular weight of 98,000 in terms of standard polystyrene by GPC measurement] B-3: MBS resin [manufactured by Kaneka Corporation; Kanec Ace M-724 (product name), a graft copolymer having a core-shell structure with a core mainly composed of butadiene rubber and a shell mainly composed of methyl methacrylate and styrene]

[0157] (Component C) C-1: Polyether ester amide [manufactured by Sanyo Chemical Industries, Ltd.; Perestat NC6321 (product name), polyether ester amide copolymer with a surface resistivity of 1×10 9

[0158] (Component D) D-1: Surfactant [manufactured by Kao Corporation; K-3000 (product name), sodium alkyl sulfonate]

[0159] (Component E) E-1: Talc [manufactured by Kosei Kogyo Co., Ltd.; Victorlite TK-RC (product name)] E-2: Mica [manufactured by Hayashi Kasei Co., Ltd.; Mascobite MC-40 (product name)] E-3: Bromine-containing aromatic compound [manufactured by Teijin Limited; FG7000 (product name), brominated carbonate oligomer having a bisphenol A skeleton, bromine content: 52.8%] E-4: Antimony [manufactured by Nippon Tungsten Co., Ltd.; PATOX-K (product name), antimony trioxide]

[0160] (Other components) AD: Anti-drip agent [manufactured by Daikin Industries, Ltd.; Polyflon MPA FA-500H (product name), polytetrafluoroethylene] IM: Impact modifier [manufactured by Mitsubishi Chemical Corporation; Metablen S-2001 (product name), graft copolymer having a core-shell structure with a core mainly composed of silicone-acrylic composite rubber and a shell mainly composed of methyl methacrylate] STB: Phosphorus-based stabilizer [manufactured by ADEKA Corporation; AX-71 (product name), octadecyl phosphate] WAX: Fatty acid ester-based mold release agent [manufactured by NOF Corporation; Unister H-476-S (product name), pentaerythritol tetrastearate]

[0161]

Table 1

[0162]

Table 2

[0163] From Tables 1 and 2, it can be seen that by adding at least one selected from the group consisting of a styrene resin, a polyether ester amide, a surfactant, talc, mica, a bromine-containing aromatic compound, and antimony to the polycarbonate resin in specific compounding amounts, a resin composition excellent in impact resistance and stable antistatic properties while exhibiting antiviral properties can be obtained.

Claims

1. (A) 50 to 99 parts by weight of a polycarbonate resin (component A) and (B) 50 to 1 part by weight of a styrene resin (component B), in total 100 parts by weight, (C) 1 to 60 parts by weight of a polyether ester amide (component C), (D) 0.2 to 30 parts by weight of a surfactant (component D), and (E) at least one selected from the group consisting of talc, mica, a bromine-containing aromatic compound, and antimony (component E) 0.1 to 60 parts by weight. A resin composition characterized by containing.

2. The resin composition according to claim 1, wherein component B is at least one styrene resin selected from the group consisting of an ABS resin, an AS resin, and an MBS resin.

3. The resin composition according to claim 1 or 2, wherein component D is an anionic surfactant.

4. The resin composition according to claim 1 or 2, having an antiviral activity value of 2.0 or more.

5. A molded article comprising the resin composition according to claim 1 or 2.

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