JP4822688B2 - Aromatic polycarbonate resin molding having optical diffusion characteristics - Google Patents

Description

  The present invention relates to an aromatic polycarbonate resin molded article that is optically excellent in total light transmittance and diffusion performance. More specifically, the present invention relates to an aromatic polycarbonate molded article excellent in mechanical properties, melt stability and flame retardancy.

Aromatic polycarbonate is a resin material with excellent mechanical properties such as impact resistance and heat resistance, so it can be used as a housing material for computers such as desktop computers and notebook computers, printers, word processors, and copiers. It is widely used for parts and materials.
By the way, in order to improve the rigidity and dimensional accuracy of aromatic polycarbonate, a method of adding an inorganic compound such as glass fiber, carbon fiber, talc, mica, wollastonite as a reinforcing material and / or a filler to the polycarbonate has been tried. It has been.

However, the aromatic polycarbonate resin composition containing these inorganic compounds has a problem in that degradation of the aromatic polycarbonate is promoted by the inorganic compound during the molding process. In particular, when a basic inorganic compound such as talc or mica is used, there is a problem that the melt stability of the aromatic polycarbonate is remarkably lowered and the physical properties of the material are greatly impaired.
To solve this problem, Patent Document 1 uses an aromatic polycarbonate by using a phosphorus compound together, Patent Document 2 uses an organic acid together, and Patent Document 3 uses a phosphonium sulfonate salt together. Although methods have been proposed to suppress the decrease in molecular weight of these materials, these methods have a problem that the molding processing temperature range is limited because the melt stability, particularly the melt stability at high temperatures, is insufficient. It was.
On the other hand, aromatic polycarbonate resin compositions used for OA equipment and electrical / electronic equipment are required not only for high rigidity and dimensional accuracy, but also for high flame retardancy. As a flame retardant, there is a demand for a molded body of a flame retardant aromatic polycarbonate resin composition that does not use a bromine-based compound or a phosphorus-based compound.

In Patent Document 4, in a resin composition in which an inorganic filler, an organic phosphorus compound flame retardant, and an organic acid alkali metal salt are blended with an aromatic polycarbonate, V-0 is measured according to UL94 standard in a 0.8 mm-thick test piece. Although it has been achieved, a phosphorus-based flame retardant is used, and a molded body using the same composition has a drawback that the physical properties are significantly lowered under high temperature and high humidity.
Patent Documents 5 and 6 disclose resin compositions in which an organic acid metal salt, an alkoxysilane compound, a fluorine-containing polymer, an inorganic filler, and optionally an organic siloxane compound are blended with an aromatic polycarbonate. . When the organosiloxane compound is blended, the composition achieves V-0 in the UL94 standard on a test piece having a thickness of 0.8 mm, but is high because the thermal stability of the organosiloxane compound is insufficient. There are drawbacks such as easy discoloration at the molten resin temperature and increased generation of volatile components.
In Patent Document 5 and Patent Document 6, a resin composition in which a fluorine-containing resin and a silicate compound are blended with an aromatic polycarbonate is disclosed, but the flame retardancy and melt stability of the composition are Not enough.

That is, in the prior art, it is an aromatic polycarbonate resin composition containing an inorganic compound, and without using a bromine-based compound or a phosphorus-based compound as a flame retardant, high flame retardancy in a thin molded article (for example, Aromatic polycarbonate resin composition with a product thickness of less than 0.7mm, high flame retardancy that can achieve V-0 in the UL94 standard), and excellent melt stability and mechanical strength as a molding material A thin molded article made of a product has not yet been obtained, and its development has been desired.
Further, when these flame retardants are used, there is a problem that the total light transmittance is remarkably impaired so that it cannot be used for an optical product such as a diffusion plate.
In addition, as a proposal to use a polycarbonate resin composition for a diffusion plate, Patent Document 7 discloses a total light transmittance in which 0.05 to 0.5 parts by weight of particles having a particle diameter of 50 μm or less are blended with respect to 100 parts by weight of a polycarbonate resin. Although a diffusion plate having a diffusion transmittance of 85% or more and 10 to 30% is disclosed, no flame retardancy is disclosed. Further, in Patent Document 8 and Patent Document 9, proposals have been made to use a bead-shaped cross-linked acrylic resin as a diffusing agent, but these also do not disclose any advanced flame retardancy. In addition, when the conventional polycarbonate resin composition is thinned, a material that is sufficiently satisfactory in terms of rigidity cannot be obtained.

JP-A-2-283760 JP-A-3-21664 Japanese Patent Laid-Open No. 10-60248 JP 2002-80709 A JP 2003-82218 A JP 2003-268226 A JP-A-5-257002 JP-A-9-279000 Japanese Patent Laid-Open No. 10-046018

  An object of the present invention is to provide an aromatic polycarbonate resin molded article having high haze (diffuse light transmittance / total light transmittance) and excellent mechanical properties (particularly rigidity), melt stability and flame retardancy. is there.

The present inventors diligently studied in order to achieve the above problems. As a result, surprisingly, the group consisting of resin (A) mainly composed of aromatic polycarbonate, solid inorganic compound (B), organic acid, organic acid ester, organic acid anhydride, organic acid phosphonium salt and organic acid ammonium salt It has been found that a molded article comprising a resin composition containing at least one compound (C) selected from the above becomes a molded article excellent in flame retardancy and haze. Furthermore, by a molded body using an aromatic polycarbonate resin composition containing at least one organic acid metal salt (D) selected from organic acid alkali metal salts and organic acid alkaline earth metal salts, and a fluoropolymer (E) As a flame retardant, a flame retardant having a very high flame retardant level compared with the prior art (for example, a high flame retardant that can achieve V-0 in UL94 standard with a product thickness of 0.8 mm or less) It has been found that it can be achieved without using bromine-based compounds or phosphorus-based compounds, has dramatically improved melt stability, and is excellent in heat aging resistance, moist heat resistance, rigidity, and impact resistance. The present invention has been completed based on this new finding.
Accordingly, one object of the present invention is to provide an aromatic polycarbonate molded article having high flame retardancy without using a bromine compound or a phosphorus compound as a flame retardant. In particular, the thin molded article produced using the aromatic polycarbonate resin composition of the present invention has extremely high flame retardancy compared to the thin molded article produced using the conventional aromatic polycarbonate resin composition. In addition, the present invention provides an aromatic polycarbonate molded article having excellent melt stability, heat aging resistance, heat and humidity resistance, rigidity and impact resistance.
That is, the present invention is as follows.
1. 100 parts by weight of a resin component (A) mainly composed of an aromatic polycarbonate, 0.1 to 20 parts by weight of a silicate compound (B) whose composition is substantially represented by the following formula (1),
x MO · y SiO ₂ · z H ₂ O (1)
(Here, x and y represent natural numbers, z represents an integer of 0 or more, M 2 O represents a metal oxide component, and a plurality of different metal oxide components may be used.)
Mainly composed of aromatic polycarbonate composed of 0.001 to 3 parts by weight of one compound (C) selected from organic sulfonic acid, organic sulfonic acid ester, organic phosphonic acid phosphonium salt, organic sulfonic acid ammonium salt and organic carboxylic acid. A molded body using a resin composition, wherein a haze represented by a ratio (D / T) of total light transmittance T and diffused light transmittance D of the molded body is 60% or more. A molded product.
2. The resin composition mainly comprising an aromatic polycarbonate containing 0.001 to 1 part by weight of at least one organic acid metal salt (D) selected from organic acid alkali metal salts and organic acid alkaline earth metal salts. 1. It is a thing. The molded product according to 1.
3. The composition is a resin composition mainly comprising an aromatic polycarbonate containing 0.01 to 1 part by weight of a fluoropolymer (E). Or 2. The molded product according to 1.
4). 1. A resin composition mainly composed of an aromatic polycarbonate contains a diffusing agent composed of at least one of silicone-based fine particles, acrylic-based fine particles, glass, and barium sulfate. ~ 3. The molded object of any one of these.
5. 1. A resin composition mainly comprising an aromatic polycarbonate contains an ultraviolet absorber. ~ 4. The molded object of any one of these.
6). The arithmetic average roughness (Ra) value described in JIS B0601 is at least 1 μm at least on one surface of the molded body. ~ 5. The molded object of any one of these.
7). The molded body has a sheet-like shape. ~ 6. The molded object of any one of these.
8). The molded body is a diffusion plate. ~ 7. The molded object of any one of these.
9. 1. The molded product is a diffusion film having a thickness of 0.4 mm or less. ~ 8. The molded object of any one of these.
10. The molded article has flame retardancy of any of VTM-0, V-0, V-1, V-2, 5VA, and 5VB by a test method according to UL94 standard. ~ 9. The molded object of any one of these.

The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and claims.
According to the basic aspect of the present invention, 100 parts by weight of resin component (A) mainly composed of aromatic polycarbonate, 0.1 to 20 parts by weight of solid inorganic compound (B), organic acid, organic acid ester, organic A molded article using a composition comprising 0.001 to 3 parts by weight of at least one compound (C) selected from the group consisting of an acid anhydride, an organic acid phosphonium salt, and an organic acid ammonium salt, There is provided a molded body characterized in that the haze represented by the ratio (D / T) of the total light transmittance T and the diffused light transmittance D is 60% or more.

Next, in order to facilitate understanding of the present invention, first, basic features and preferred embodiments of the invention will be listed.
That is, the present invention provides the following 1. ~ 8. It is invention of this.
1. 100 parts by weight of resin component (A) mainly composed of aromatic polycarbonate, 0.1 to 20 parts by weight of solid inorganic compound (B), organic acid, organic acid ester, organic acid anhydride, organic acid phosphonium salt and organic A molded article using a composition comprising 0.001 to 3 parts by weight of at least one compound (C) selected from the group consisting of acid ammonium salts, the total light transmittance T and diffuse light transmittance of the sheet A molded article having a haze represented by a ratio to D (D / T) of 60% or more.
2. The aromatic polycarbonate resin composition in which the composition described in the preceding paragraph contains 0.001 to 1 part by weight of at least one organic acid metal salt (D) selected from organic acid alkali metal salts and organic acid alkaline earth metal salts. 2. The molded article according to 1 above, wherein
3. 3. The molded article according to 1 or 2 above, wherein the composition described in the preceding item is an aromatic polycarbonate resin composition containing 0.01 to 1 part by weight of a fluoropolymer (E).
4. The molded article according to any one of 1 to 3 above, wherein the aromatic polycarbonate resin composition contains a diffusing agent comprising at least one of silicone-based fine particles, acrylic-based fine particles, glass, and barium sulfate.

5). The molded article as described in any one of 1 to 4 above, wherein the aromatic polycarbonate resin composition contains an ultraviolet absorber.
6). 6. The molded product according to any one of 1 to 5 above, wherein the surface roughness of at least one side of the molded product has an arithmetic average roughness (Ra) value of 1 μm or more described in JIS B0601.
7. The molded product according to any one of 1 to 6 above, wherein the molded product has a sheet-like shape.
8). 8. The molded body according to any one of 1 to 7 above, wherein the molded body is a diffusion plate.
9. The molded body according to any one of 1 to 8 above, wherein the molded body is a diffusion film having a thickness of 0.4 mm or less.
10. The molded article has flame retardancy of any of VTM-0, V-0, V-1, V-2, 5VA, 5VB by a test method according to UL94 standard. The molded object in any one of.

  The molded article of the present invention is an aromatic polycarbonate resin molded article having high haze and excellent mechanical properties (particularly rigidity), melt stability and flame retardancy.

Hereinafter, the invention will be described in detail.
In the present invention, the component (A) is a resin mainly composed of an aromatic polycarbonate.
In the present invention, the resin mainly composed of aromatic polycarbonate means a resin in which the amount of aromatic polycarbonate in the resin exceeds 50 parts by weight when the total amount of the resin is 100 parts by weight. The component (A) may be an aromatic polycarbonate alone, and the component (A) may contain a thermoplastic resin other than the aromatic polycarbonate.
The aromatic polycarbonate preferably used as the component (A) of the present invention is an aromatic polycarbonate derived from an aromatic dihydroxy compound. Examples of the aromatic dihydroxy compound include 1,1-bis (4-hydroxy-t-butyl). Bis (hydroxyaryl) alkanes such as phenyl) propane, 2,2-bis (4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclopentane, 1,1-bis (4-hydroxyphenyl) ) Bis (hydroxyaryl) cycloalkanes such as cyclohexane, dihydroxyaryl ethers such as 4,4′-dihydroxy-3,3′-dimethylphenyl ether, 4,4′-dihydroxydiphenyl sulfide, 4,4′-dihydroxy -3,3'-dimethylphenylsulfi Dihydroxyaryl sulfides such as 4,4′-dihydroxydiphenyl sulfoxide, dihydroxyaryl sulfoxides such as 4,4′-dihydroxy-3,3′-dimethylphenyl sulfoxide, 4,4′-dihydroxydiphenyl sulfone, Examples thereof include dihydroxyaryl sulfones such as 4′-dihydroxy-3, 3′-dimethylphenyl sulfone.

  Among these, 2,2-bis (4-hydroxyphenyl) propane (common name, bisphenol A) is particularly preferable. These aromatic dihydroxy compounds can be used alone or in combination of two or more. As the aromatic polycarbonate preferably used as component A of the present invention, those produced by a known method can be used. Specifically, a known method of reacting an aromatic dihydroxy compound and a carbonate precursor, for example, an interface in which an aromatic dihydroxy compound and a carbonate precursor (for example, phosgene) are reacted in the presence of an aqueous sodium hydroxide solution and a methylene chloride solvent. Solid-state polymerization of crystallized carbonate prepolymers obtained by polymerization methods (for example, phosgene method), transesterification methods (melting method) in which aromatic dihydroxy compounds react with carbonic acid diesters (for example, diphenyl carbonate), phosgene methods or melting methods A method manufactured by a method such as JP-A-1-15833, JP-A-1-271426, or JP-A-3-68627 can be used.

Particularly preferred as the aromatic polycarbonate used as the component (A) of the present invention is substantially free of chlorine atoms produced by a transesterification method from a dihydric phenol (aromatic dihydroxy compound) and a carbonic acid diester. Aromatic polycarbonate.
The weight average molecular weight (Mw) of the aromatic polycarbonate is usually 5,000 to 500,000, preferably 10,000 to 100,000, more preferably 13,000 to 50,000, still more preferably. Is 15,000 to 30,000, particularly preferably 17,000 to 25,000, and most preferably 17,000 to 20,000.
In the present invention, the weight average molecular weight (Mw) of the aromatic polycarbonate can be measured using gel permeation chromatography (GPC), using polystyrene gel with tetrahydrofuran as a solvent, and standard monodispersion. It can obtain | require using the conversion molecular weight calibration curve by the following Formula from the structural curve of polystyrene.
M _PC = 0.3591M _PS ^1.0388
( _MPC is the molecular weight of aromatic polycarbonate, _MPS is the molecular weight of polystyrene)

Further, as (A) of the present invention, two or more types of aromatic polycarbonates having different molecular weights may be used in combination. For example, an aromatic polycarbonate of an optical disk material whose Mw is usually in the range of 14,000 to 16,000, and an aromatic for injection molding or extrusion molding whose Mw is usually in the range of 20,000 to 50,000. A combination of polycarbonates can be used.
Examples of the thermoplastic resin other than the aromatic polycarbonate that can be preferably used in the resin (A) mainly composed of the aromatic polycarbonate include polystyrene, high impact polystyrene (HIPS), and acrylonitrile / styrene resin (AS resin). , Butyl acrylate / acrylonitrile / styrene resin (BAAS resin), acrylonitrile / butadiene / styrene resin (ABS resin), methyl methacrylate / butadiene / styrene resin (MBS resin), butyl acrylate / acrylonitrile / styrene resin (AAS resin), polyethylene terephthalate Elastomers with improved impact resistance, such as polyester resins such as polyethylene and polybutylene terephthalate, polyamide resins, polymethyl methacrylate, polyarylate Chromatography, may be mentioned thermoplastic resins such as a silicone elastomer. In particular, AS resin and BAAS resin are preferable for improving fluidity, ABS resin and MBS resin are preferable for improving impact resistance, and polyester resin is preferable for improving chemical resistance.
In the resin (A) mainly composed of the polycarbonate, the amount of the thermoplastic resin other than the aromatic polycarbonate is preferably 0.1 to 30 parts by weight, more preferably 100 parts by weight of the total amount of the component (A). Is 0.5 to 20 parts by weight, more preferably 1 to 15 parts by weight.

In the present invention, the component (B) is a solid inorganic compound.
In the present invention, by using the component (B), high flame retardancy of the resin composition can be obtained, and the rigidity and strength of the composition (function as a reinforcing material) and dimensional accuracy (filler) are improved. As a function).
Examples of the fibrous component (B) in the present invention include glass fiber, carbon fiber, aluminum borate whisker, calcium titanate whisker, rock wool, silicon nitride whisker, boron fiber, tetrapotted zinc oxide whisker, wollastonite. And so on.
Examples of the plate-like component (B) include talc, mica, pearl mica, glass flakes, and kaolin.
Examples of the spherical (or pseudospherical) component (B) include glass beads, glass balloons, carbon black, glass powder, silica (natural silica and synthetic silica), and the like.

As the component (B) used in the present invention, a component whose surface is modified to improve the interface affinity with the aromatic polycarbonate in the resin composition of the present invention can also be used. The surface modification mentioned here can be performed by a method of adsorbing a lipophilic organic compound in advance or a method of treating with a silane coupling agent or a titanate coupling agent.
In the present invention, as the component (B), silicate compounds such as carbon fiber or talc, mica, pearl mica, wollastonite, kaolin, glass fiber, and glass flake are preferable.
Among the silicate compounds that can be more preferably used as the component (B) of the present invention, a particularly preferred silicate compound is a silicate compound comprising a metal oxide component and a SiO ₂ component. The form of the silicate ion present in the silicate compound that can be used as the component (B) may be any form such as orthosilicate, disilicate, cyclic silicate, chain silicate, layered silicate, and the like.
The silicate compound may be a compound oxide, an oxyacid salt, or a solid solution compound, and the compound oxide may be a combination of two or more different single oxides, and a single oxide and an oxyacid salt. Any of the combinations may be used, and the solid solution may be a solid solution of two or more different metal oxides and a solid solution of two or more different oxyacid salts.
The silicate compound may be a hydrate. The form of crystal water in the hydrate is included as hydrogen silicate ion in the form of Si-OH, included as hydroxide ion (OH ⁻ ) for metal cation, and included as water molecule in the gap of structure Any of these may be used.
Moreover, both the natural product and the artificial synthetic product can be used as the silicate compound. As the artificial compound, silicate compounds obtained from various conventionally known methods, for example, various synthesis methods using a solid reaction, a hydrothermal reaction, an ultrahigh pressure reaction and the like can be used.

The silicate compound particularly preferably used as the component (B) of the present invention preferably has a composition substantially represented by the following formula (1).
_{xMO · ySiO 2 · zH 2 O} (1)
(Here, x and y represent natural numbers, z represents an integer of 0 or more, MO represents a metal oxide component, and a plurality of different metal oxide components may be used.)
Examples of the metal M in the metal oxide MO include potassium, sodium, lithium, barium, calcium, zinc, manganese, iron, cobalt, magnesium, zirconium, aluminum, titanium, and the like.
The silicate compound of the above formula (1) preferably contains CaO and / or MgO as the metal oxide MO, more preferably contains only CaO and / or MgO, and substantially contains only MgO. It is particularly preferable to include it.
Specific examples of the silicate compound preferably used as the component (B) of the present invention include talc, mica, wollastonite, zonotlite, kaolin clay, montmorillonite, bentonite, sepiolite, imogolite, sericite, lawsonite, smectite and the like. be able to.
In addition, as described above, the silicate compound can be of any shape (plate, needle, sphere, fiber, etc.), but plate, needle and fiber are preferred, What is a plate-like particle | grain can be most preferably used as a component (B) of this invention. Here, the plate-like particles are obtained by the following method when the average particle diameter obtained as the median diameter of the plate-like component (B) is (a) and the thickness is (c), ) / (C) ratio is 5 to 500, preferably 10 to 300, more preferably 20 to 200.

In the present invention, the average particle size (a) of the component (B) is preferably 0.001 to 500 μm, more preferably 0.01 to 100 μm, still more preferably 0.1 to 50 μm, and particularly preferably 1 to 30 μm. preferable.
In addition, said average particle diameter is measured using either of the following two methods by the approximate distribution range of the particle diameter of a component (B).
When the particle diameter of the component (B) is distributed in the range of about 0.001 to 0, 1 μm, an observation photograph of a transmission electron microscope is taken, and from the obtained micrograph, 100 or more in the resin composition For each of the inorganic compound particles, the area of each particle on the photograph was measured, and using S (value obtained by dividing the area on the photograph by the magnification of the microscope), (4S / π) ^0.5 Obtained as the particle diameter of each particle, the number average particle diameter is defined as the average particle diameter (a).
When the particle diameter of the component (B) is approximately 0.1 to 300 μm, the particle diameter is measured by a laser diffraction method (for example, using SALD-2000 manufactured by Shimadzu, Japan), and the median diameter is determined. Average particle diameter.
In the present invention, the thickness (c) of the plate-like component (B) is preferably 0.01 to 100 μm, more preferably 0.03 to 10 μm, further preferably 0.05 to 5 μm, and 0.1 to 3 μm. Particularly preferred.
The thickness (c) of the plate-like particles used as the component (B) is obtained, for example, by taking an observation photograph of a transmission electron microscope, and from the obtained micrograph, with respect to 10 or more individual particles in the resin composition. The thickness of each particle on the photograph is measured, the value obtained by dividing the thickness on the photograph by the magnification of the microscope is obtained as the thickness of each particle, and the average value is defined as the thickness (c).

Of the plate-like silicate compounds that can be used as the component (B) of the present invention, particularly preferred are talc and mica.
Talc that can be particularly preferably used as the component (B) of the present invention is a hydrous magnesium silicate having a layered structure, represented by the chemical formula 4SiO ₂ .3MgO.H ₂ O, usually about 63 wt% SiO ₂ , MgO It contains about 32% by weight, about 5% by weight of H ₂ O, other Fe ₂ O ₃ , CaO, Al ₂ O _{3 and the} like, and the specific gravity is about 2.7.
As the component (B) of the present invention, calcined talc, talc from which impurities have been removed by washing with an acid such as hydrochloric acid or sulfuric acid can be preferably used. Furthermore, talc that has been subjected to surface hydrophobic treatment with a silane coupling agent, a titanate coupling agent, or the like can also be used.
On the other hand, mica that can be particularly preferably used as the component (B) of the present invention is a pulverized product of a silicate mineral containing aluminum, potassium, magnesium, sodium, iron and the like. Mica includes muscovite (mass cobalt, chemical formula: K (AlSi ₃ O ₁₀ ) (OH) 2 Al ₄ (AlSi ₃ O ₁₀ ) K), phlogopite (phlogopite, chemical formula K (AlSi ₃ O ₁₀ ) (OH) 2 Mg ₆ (OH) ₂ (AlSi ₃ O ₁₀ ) K), biotite (biotite, chemical formula K (AlSi ₃ O10) (OH) ₂ (Mg, Fe) ₆ (OH) ₂ (AlSi ₃ O ₁₀ ) K), artificial Mica (fluorine phlogopite, chemical formula K (AlSi ₃ O ₁₀ ) (OH) 2 F ₂ Mg ₆ F ₂ (AlSi ₃ O ₁₀ ) K), etc., and any mica can be used in the present invention. is there.
Such mica may be subjected to a surface hydrophobic treatment with a silane coupling agent, a titanate coupling agent or the like.

In this invention, the usage-amount of a component (B) is 0.1-200 weight part with respect to 100 weight part of component (A), 0.3-100 weight part is preferable, 0.5-50 weight part is More preferably, 0.8-30 weight part is further more preferable, and 1-20 weight part is especially preferable. When the component (B) exceeds 200 parts by weight, the melt stability is significantly lowered, and the mechanical properties of the resin composition are greatly lowered. Moreover, when a component (B) is less than 0.1 weight part, it exists in the tendency for the flame retardance of a resin composition to fall, and the high flame retardance made into the objective of this invention cannot be achieved.
In the present invention, as the component (B), in the case of using a plate-like form, for example, talc and mica, it is possible to achieve particularly excellent flame retardancy even if it is a thin-walled molded article, and a resin. Since the electrical properties such as impact resistance, dimensional stability, insulation and tracking resistance of the composition can be improved, it is most preferable as an embodiment of the present invention.

Component (C) used in the present invention is at least one compound selected from the group consisting of organic acids, organic acid esters, organic acid anhydrides, organic acid phosphonium salts, and organic acid ammonium salts.
In the present invention, the amount of the component (C) used is 0.001 to 3 parts by weight, preferably 0.005 to 2 parts by weight, and 0.01 to 1 part by weight with respect to 100 parts by weight of the component (A). More preferably, 0.05 to 0.8 parts by weight is still more preferable, and 0.08 to 0.5 parts by weight is particularly preferable. When the component (C) exceeds 3 parts by weight or less than 0.001 part by weight, the melt stability is significantly lowered, the mechanical properties of the resin composition are greatly lowered, and the resin composition is difficult to be treated. The flame retardancy tends to decrease, and the high flame retardancy targeted by the present invention cannot be achieved.
In the present invention, component (C) is used in combination with component (B), and the amount of component (C) used is such that the pH value of the mixture of component (B) and component (C) is in the range of 4-8. By adjusting in this way, the flame retardance and melt stability of the resin composition can be dramatically improved, which is particularly preferable.

The organic acid used as component (C) of the present invention is an organic compound containing at least one group selected from the group consisting of —SO ₃ H group, —COOH group, and —POH group in the molecular structure, ie, organic Sulfonic acid, organic carboxylic acid, and organic phosphoric acid. Of these, organic sulfonic acids and organic carboxylic acids are preferred in the present invention, and organic sulfonic acids are particularly preferred.
The organic acid ester, organic acid anhydride, organic acid phosphonium salt, and organic acid ammonium salt used as the component (C) of the present invention are derivatives of the above organic acids. The organic acid derivative is considered to decompose when the resin composition is molded and function as an acid. Therefore, for example, when an inorganic compound showing basicity is used as the component (B), the component (C) is considered to exhibit a function of neutralizing it. That is, in the composition of the present invention, the component (C) exhibits a pH adjusting function.
As the compound (C), not only a low molecular compound such as a monomer but also an oligomer or polymer can be used.

In the present invention, the component (C) can be used in combination of two or more.
As component (C) of the present invention, an organic sulfonic acid derivative selected from organic sulfonic acid and / or organic sulfonic acid ester, organic sulfonic acid phosphonium salt, organic sulfonic acid ammonium salt, and organic carboxylic acid are preferably used. it can.
In particular, when an organic sulfonic acid and / or an organic sulfonic acid ester is used as the component (C), the melt stability of the resin composition is particularly excellent, and the generation of volatile components can be suppressed to a low level. In addition, the molding process can be performed in a wide temperature range, and the appearance of the molded product is extremely excellent.
As the organic sulfonic acid that can be preferably used as the component (C) of the present invention, benzenesulfonic acid, p-toluenesulfonic acid, xylenesulfonic acid, naphthalenesulfonic acid, diisopropylnaphthalenesulfonic acid, diisobutylnaphthalenesulfonic acid, dodecylbenzene Examples thereof include aromatic sulfonic acids such as sulfonic acids, aliphatic sulfonic acids having 8 to 18 carbon atoms, sulfonated polystyrene, polymers such as methyl acrylate / sulfonated styrene copolymers, and oligomeric organic sulfonic acids. .
Furthermore, in the present invention, the organic sulfonic acid that is preferably used as the component (C) contains, in addition to —SO ₃ H group, —OH group, —NH ₂ group, —COOH group, halogen group and the like in the molecular structure. An organic sulfonic acid compound may be used, for example, naphthol sulfonic acid, sulfamic acid, naphthylamine sulfonic acid, sulfobenzoic acid, organic sulfonic acid that is fully or partially substituted with a chloro group (chlorinated organic sulfonic acid), fluoro group And organic sulfonic acids (fluoro group-containing organic sulfonic acids) which are completely or partially substituted by the above.
As the component (C) used in the present invention, an aromatic sulfonic acid compound is particularly preferable, and benzenesulfonic acid, p-toluenesulfonic acid, naphthalenesulfonic acid and the like can be mentioned as the most preferable examples.

In the present invention, an amount in which the pH value of the mixture of component (B) and component (C) is in the range of 4 to 8 is preferable, but in the present invention, the pH value can be measured based on JIS K5101. .
In the method for measuring the pH value of JIS K5101, there are a boiling method and a room temperature method as operation methods. In the present invention, the boiling method is used.
In the measurement of the pH value of the mixture of component (B) and component (C) in the present invention, if the solubility of component (C) in water is low, alcohols such as ethanol and isopropyl alcohol are dispersed in the suspension. Used as an agent.
The amount of the component (C) used in the present invention varies depending on the type, shape and amount of the component (B) or the type of the component (C).
The amount of component (C) used is more preferably such that the pH of the mixture of component (B) and component (C) is in the range of 4.2 to 7.8, More preferably, it is in the range.
The optical characteristics of total light transmittance T, diffused light transmittance D, and haze (D / T) in the present invention are characteristics measured according to JIS K7105 standard. The haze (D / T) in the present invention is preferably 60% or more, more preferably 80% or more, and most preferably 90% or more.

In the present invention, component (D) is at least one organic acid metal salt selected from organic acid alkali metal and organic acid alkaline earth metal salts. The component (D) has an action of promoting the decarboxylation reaction of the aromatic polycarbonate at the time of combustion with respect to the resin (A) mainly composed of the aromatic polycarbonate.
The organic acid metal salt preferably used as the component (D) of the present invention is a metal salt of an organic sulfonic acid and / or a metal salt of a sulfate ester, and these are used not only alone but also in combination of two or more. It is also possible to do.
Examples of the alkali metal contained in the component (D) of the present invention include lithium, sodium, potassium, rubidium and cesium, and examples of the alkaline earth metal include beryllium, magnesium, potassium, strontium and barium. In the present invention, particularly preferred alkali metals are lithium, sodium and potassium, and most preferred are sodium and potassium.

Examples of the metal salts of organic sulfonic acids that can be preferably used in the present invention include alkali / alkaline earth metal salts of aliphatic sulfonic acids, alkali / alkaline earth metal salts of aromatic sulfonic acids, and the like. In the present specification, the term “alkali / alkaline earth metal salt” is used to include both alkali metal salts and alkaline earth metal salts.
Alkali / alkaline earth metal salts of aliphatic sulfonic acids include alkali / alkaline earth metal salts of alkane sulfonic acids having 1 to 8 carbon atoms, or alkyl groups of alkali / alkaline earth metal salts of such alkane sulfonic acids. Alkali / alkaline earth metal salts of sulfonic acids partially substituted with fluorine atoms, and further alkali / alkaline earth metal salts of perfluoroalkanesulfonic acids having 1 to 8 carbon atoms can be preferably used. Preferable specific examples include perfluoroethanesulfonic acid sodium salt and perfluorobutanesulfonic acid potassium salt.

Among the components (D) in the present invention, more preferable alkali / alkaline earth metal salts include alkali / alkaline earth metal salts of aromatic sulfonic acids and alkali / alkaline earth metal salts of perfluoroalkanesulfonic acids. be able to.
In this invention, the usage-amount of a component (D) is 0.001-1 weight part with respect to 100 weight part of components (A), 0.01-0.9 weight part is preferable, 0.1-0. 8 parts by weight is more preferable, and 0.4 to 0.7 is most preferable. When the component (D) exceeds 1 part by weight, the melt stability is significantly lowered, and the mechanical properties of the resin composition are greatly lowered. Moreover, when a component (D) is less than 0.001 weight part, it exists in the tendency for the flame retardance of a resin composition to fall, and the high flame retardance (for example, V-0) made into the objective of this invention cannot be achieved.

Component (E) used in the present invention is a fluoropolymer, and is used for the purpose of preventing dripping of combustion products. Component (E) that can be preferably used in the present invention is a fluoropolymer having a fibril forming ability, and a tetrafluoroethylene polymer of polytetrafluoroethylene or a tetrafluoroethylene / propylene copolymer can be preferably used. Particularly preferred is polytetrafluoroethylene.
Component (E) includes fine powdery fluoropolymer, aqueous dispersion of fluoropolymer, powdered mixture with second resin such as acrylonitrile / styrene copolymer (AS) and polymethyl methacrylate (PMMA), etc. Any form of fluoropolymer can be used.
As an aqueous dispersion of a fluoropolymer that can be preferably used in the present invention, “Teflon 30J (registered trademark)” manufactured by Mitsui DuPont Fluorochemical Co., Ltd., “Polyflon D-1 (registered trademark)” manufactured by Daikin Industries, Ltd., “Polyfluorocarbon” “D-2 (registered trademark)”, “Polyflon D-2C (registered trademark)”, “Polyflon D-2CE (registered trademark)” can be exemplified.

In the present invention, as the component (E), a fluoropolymer made into a powdery mixture with a second resin such as AS or PMMA can also be suitably used. However, a powdery mixture with these second resins can also be used. Techniques relating to the fluoropolymers disclosed in JP-A-9-95583, JP-A-11-49912, JP-A-2000-143966, JP-A-2000-297189, and the like. As a fluoropolymer in the form of a powder mixture with these second resins that can be preferably used in the present invention, “Blendex 499 (registered trademark)” manufactured by GE Specialty Chemicals, Inc., “Metablene A-3800 (registered trademark) manufactured by Mitsubishi Rayon Co., Ltd.” Trademark) ”.
The compounding amount of component (E) in the present invention is 0.01 to 1 part by weight, preferably 0.05 to 0.8 part by weight, more preferably 0.1 to 100 parts by weight of component (A). -0.7 parts by weight. When the component (E) exceeds 1 part by weight, the mechanical properties of the resin composition tend to decrease. Moreover, when a component (E) is less than 0.01 weight part, dripping of a combustible material tends to arise and it exists in the tendency for combustibility to fall.

In the aromatic polycarbonate resin composition of the present invention, a colorant, a lubricant, a release agent, a heat stabilizer, an antioxidant, an ultraviolet absorber, an antistatic agent, and the like can be further added as necessary.
The amount of the additive used is usually 5 parts by weight or less, preferably 3 parts by weight or less, more preferably 1 part by weight or less with respect to 100 parts by weight of the total amount of the resin composition.
Next, the manufacturing method of the aromatic polycarbonate resin composition of this invention is demonstrated. Ingredients (D) and (E) are blended as necessary in order to enhance the flame retardancy, but here, a case where all of (A) to (E) are included will be described.
The resin composition of the present invention can be obtained by blending the above components (A) to (E) and other components as necessary in the above composition ratio, and melt-kneading with an extruder or the like. At this time, blending of each component and melt kneading use a commonly used device, for example, a premixing device such as a tumbler or ribbon blender, a melt kneading device such as a single screw extruder, a twin screw extruder, or a kneader. I can do it. In addition, the raw materials can be supplied to the melt-kneading apparatus after the respective components are mixed in advance. It is also possible to supply each component independently to the melt-kneading apparatus.
In producing the aromatic polycarbonate resin composition of the present invention, the shape of the component (A) is not particularly limited, and examples thereof include pellets, powders, and flakes.

In the production of the resin composition of the present invention, the component (B) is chemically or chemically bonded in advance to the surface and inside of the component (C) via a covalent bond, ionic bond, intermolecular force, hydrogen bond, or the like. After the physical surface treatment, it is preferably supplied to the melt kneader.
As a method for subjecting the component (B) to the surface treatment with the component (C) in advance, for example, the following method can be shown. A predetermined amount of component (C) is blended with component (B). If necessary, component (C) is converted into a molten state, a solution state, or a gas state by a method such as spraying, dropping, wetting, or dipping. Examples of the method of bringing into contact with B), carrying out mixing and stirring using a mechanical mixing device such as a Henschel mixer, Nauta mixer, V blender, and tumbler, followed by degassing and drying of excess components can be exemplified. . The mixing and stirring treatment may be performed at a temperature not higher than the melting point of the component (C), but it is more effective to raise the temperature to a temperature not lower than the melting point of the component (C). The time required for the mixing and stirring is usually 1 minute to 3 hours, preferably 2 minutes to 1 hour, more preferably 3 minutes to 40 minutes, and further preferably 5 minutes to 30 minutes, depending on the type of mixing apparatus. . As a mixing device, a Henschel mixer with a heating device and a Nauta mixer can be used particularly preferably. In addition, it is preferable to remove the excess component (C) by depressurization and / or overheating after the mixing and stirring treatment and sufficiently dry it.

As a melt-kneading apparatus for producing the resin composition of the present invention, an extruder, preferably a twin-screw extruder is usually used. Component (B) can also be side-fed from the middle of the extruder. The melt-kneading is usually carried out by appropriately selecting the cylinder set temperature of the extruder at 200 to 300 ° C., preferably 220 to 270 ° C., and the extruder rotating speed of 100 to 700 rpm, preferably 200 to 500 rpm. However, care should be taken not to give excessive heat during melt-kneading. Furthermore, it is also effective to provide an opening in the latter part of the extruder and perform open devolatilization and, if necessary, vacuum devolatilization. Further, the residence time of the raw material resin in the extruder is usually selected appropriately within a range of 10 to 60 seconds.
The molding method for obtaining a molded product comprising the aromatic polycarbonate resin composition of the present invention may be a normal molding method, and sheet extrusion and inflation molding are preferably used when a sheet-like thin molded product is produced. Also, profile extrusion molding is used. Moreover, injection molding, compression molding, injection compression molding, and blow molding can also be used. In the case of injection molding, as a special technique for increasing the fluidity of the resin, a method of improving the fluidity of the molten resin by dissolving nitrogen or carbon dioxide as a plasticizer in the molten resin may be used. Nitrogen and carbon dioxide may be appropriately injected by providing a vent portion in an injection molding machine cylinder. In order to improve the transferability of molded products and to prevent defects in appearance (swirl marks) when filling the mold with a resin in which nitrogen or carbon dioxide is dissolved in the molten resin, the molten resin is made of gold. Before filling the mold, nitrogen gas or carbon dioxide may be filled in the mold in advance. In this case, carbon dioxide is preferably used for the purpose of improving transferability.

The solid inorganic compound (B) used in the present invention is effective as a diffusing agent, but may further contain inorganic or organic materials generally used as a diffusing agent (F). As the preferred diffusing agent, at least one kind selected from silicone fine particles, acrylic fine particles, glass, and barium sulfate is selected, and these are preferably diffused by the synergistic effect used with the solid inorganic compound (B) of the present invention. Characteristics can be obtained. The amount of the diffusing agent (F) used is 0.01 to 5 parts by weight, preferably 0.05 to 3 parts by weight, more preferably 0.1 to 2 parts by weight, based on 100 parts by weight of the total amount of the resin composition. It is.
The composition used for the molded article of the present invention is more excellent in weather resistance by containing an ultraviolet absorber, and the light deterioration property with respect to the direct type backlight is also improved. The ultraviolet absorber that can be used in the present invention is not particularly limited as long as it is generally used for polycarbonate resins, and examples thereof include benzophenone ultraviolet absorbers, benzotriazole ultraviolet absorbers, and hydroxyphenyltriazine compounds. can give. Further, in order to further improve the weather resistance, a hindered amine light stabilizer and various antioxidants may be included.

Examples of the benzophenone ultraviolet absorber include 2-hydroxy-4-n-dodecyloxybenzophenone, 2,2′-dihydroxy-4,4′-dimethoxybenzophenone, bis (5-benzoyl-4-hydroxy-2-methoxyphenyl) Examples include methane.
Examples of the benzotriazole ultraviolet absorber include 2- (2H-benzotriazol-2-yl) -4- (1,1 ′, 3,3′-tetramethylbutyl) phenone and 2- (2H-benzotriazole-2). -Yl) -4,6bis (1-methyl-1-phenylethyl) phenol 2- (2'-hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'- Diphenyl-tert-amylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-bis (α, α′-dimethylbenzyl) phenylbenzotriazole, 2,2′methylenebis [4- (1,1 , 3,3-tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol, methyl-3- [3-tert-butyl-5- (2H-benzotriazole) 2-yl) -4-hydroxyphenylpropionate-condensate with polyethylene glycol and the like.

The molded article of the present invention preferably has an arithmetic average roughness (Ra) described in JIS B0601 of at least one surface of the molded article of 1 μm or more. By forming the surface of the molded product in a mat shape, it is possible to increase the diffused light transmittance without greatly reducing the total light transmittance. Further, the solid inorganic compound (B) used in the present invention has a great effect in increasing the surface roughness. Usually, in order to increase the surface roughness of a molded product, a mat shape is provided on a roll when a sheet is extruded, and a surface shape is provided on the surface of an injection mold so that the surface shape of the mold can be increased during molding. It is done to transfer. In the production of a molded article according to the present invention, the conventional method is also effective, but by using the characteristics of the solid inorganic compound (B), a sheet molding roll having a mirror surface and an injection molding die are used. However, it is possible to produce a molded body having a surface shape with a desired surface roughness only by adjusting the roll temperature and the mold temperature.
The molded product of the present invention is also effective for a complex shape such as a modified extruded product or an injection molded product, but a sheet-shaped product is particularly preferable. Moreover, as a use of a sheet-like molded body, a diffusion plate is most preferable.
Furthermore, the molded article according to the present invention preferably achieves any one of VTM-0, V-0, V-1, V-2, 5VA, and 5VB in a test method according to the UL94 standard, and in particular, achieves V-0. It is preferable to do.
In the present invention, the molded product comprises 100 parts by weight of the resin component (A), 0.1 to 20 parts by weight of the solid inorganic compound (B), organic acid, organic acid ester, organic acid anhydride, organic acid phosphonium salt, and organic acid ammonium. Since it is a molded body using a composition comprising at least one compound (C) 0.001 to 3 parts by weight selected from the group consisting of salts, it has been extremely difficult to achieve at the same time. It became possible to achieve haze characteristics and flame retardant characteristics due to roughness by a simple and inexpensive method.

Hereinafter, in Examples and Comparative Examples, the following components (A), (B), (C), (D), (E) and other components are used, and a molded article is formed using an aromatic polycarbonate resin composition. Produced.
1. Component (A): Aromatic polycarbonate A bisphenol A polycarbonate produced by bisphenol A and diphenyl carbonate by a melt transesterification method, and octadecyl-3- (3,5-di-) as a hindered phenol antioxidant. Containing 300 ppm of (butyl-4-hydroxyphenyl) propionate.
Weight average molecular weight (Mw) = 21,800
Phenolic end group ratio (ratio of phenolic end groups to the total number of end groups) = 35 mol%
The phenolic end group ratio was measured by a nuclear group magnetic resonance method (NMR method).
2. Component (B): Solid inorganic compound Talc having the following characteristics.
Average particle size = 5 μm
Whiteness = 96%
Bulk specific volume = 2.3 ml / g
Specific surface area = 8.5 m ² / g
Moisture = 0.2%
Oil absorption = 51ml / 100g
pH = 9.3
The average particle size was measured using a SALD-2000 analyzer manufactured by Shimadzu Corporation, the particle size of each particle was measured by a laser diffraction method, and the average particle size of talc was the median size.
The whiteness was measured by a measuring method based on JIS P8123, and measured with a digital hunter ST manufactured by Toyo Seiki Seisakusho.
The specific surface area was measured by a BET method using a gas phase adsorption method, and was measured using a flow soap 2300 manufactured by Shimadzu Corporation.
The moisture was measured by a measuring method based on JISK 5101 and measured using STAC-5100 manufactured by Shimadzu Corporation.
The oil absorption and the volume specific volume were measured by a measuring method based on JIS K5101.
The pH was measured by a pH measurement method (boiling method) based on JIS K5101 standard.

3. Component (C): at least one compound selected from the group consisting of organic acids, organic acid esters, organic acid anhydrides, organic acid phosnium salts and organic acid ammonium salts p-toluenesulfonic acid (special grade reagent, Wako Pure Chemical Industries, Ltd.) (Made by Co., Ltd.)
4). Component (D): At least one organic acid metal salt selected from organic acid alkali metal salts and organic acid alkaline earth metal salts Perfluorobutanesulfonic acid potassium salt (Dainippon Ink Industries, Ltd., trade name “Mega” Fax F114 ")
5). Component (E): Fluoropolymer Polytetrafluoroethylene (PTFE) and acrylonitrile / styrene copolymer (AS) 50/50 (weight ratio) powdery mixture (“Blendex 449” manufactured by GE Specialty Chemicals, USA) Trademark))
6). Component (F): Diffusion agent (F-1) Polymer fine particles (average particle size 12 μm) made of cross-linked polymethyl methacrylate resin (MBX-12 manufactured by Sekisui Plastics Co., Ltd.)
(F-2) Silicone resin powder (average particle size 2 μm) of cured polyorganosilsesquioxane powder (KMP-590, manufactured by Shin-Etsu Chemical Co., Ltd.)
7). Other ingredients (release agent)
Pentaerythritol tetrastearate (manufactured by Nippon Oil & Fats, Japan, “Unistar H476” (registered trademark))
"Examples 1 and 2" and "Comparative Examples 1 and 2"
Polycarbonate obtained by melt-kneading components (A), (B), (C), (D), (E) and other components in amounts shown in Table 1 (unit: parts by weight) using a twin screw extruder A flame retardant resin composition was obtained.

Specific production methods and production conditions are as follows.
The melt kneading apparatus uses a twin screw extruder (ZSK-25, L / D = 37, manufactured by Werner & Pfleiderer, Germany), a cylinder set temperature of 250 ° C., a screw rotation speed of 250 rpm, and a kneading resin discharge speed of 15 kg / hr. Melt kneading was performed under the conditions.
During melt kneading, the temperature of the molten resin measured by a thermocouple at the extruder die was 260 to 270 ° C.
In addition, a vent port was provided in the latter part of the extruder, and vacuum devolatilization (0.005 MPa) was performed.
The raw materials are charged into the twin-screw extruder when the components (B) and (C) are mixed in a 10-liter Henschel mixer set at a jacket temperature of 200 ° C. at the blending ratio shown in Table 1 before melt kneading. It was used after being premixed for 10 minutes with a screw rotation of 1,450 rpm. When the pH value of the premixing treatment was measured according to JIS K5101, the results shown in Table 1 were obtained.
The obtained pellets of the resin composition were dried at 120 ° C. for 4 hours, molded with an injection molding machine, and the following tests were performed.

For the production of the molded body, a molded body by injection molding and a sheet-like molded body by extrusion molding were prepared. In the injection molding, a molded body using a mirror mold and a molded body having an embossed shape using a mold having a mat shape on the mold surface were prepared. For the extrusion molding, a sheet-like molded body having a desired surface shape was prepared by controlling the roll temperature to a specific temperature by using a roll surface having a mat shape and a mirror surface. In the extrusion molding, pellets of the obtained resin composition were dried at 120 ° C. for 4 hours, and a cylinder set temperature of 270 ° C. with a 65 mm single-screw extruder (GM 65-25 manufactured by GM Engineering Co., Ltd.) equipped with a T-die. A sheet having a rotation speed of 15 rpm and a discharge amount of 10 to 15 kg / hr was formed.
The T die had a slit width of 0.5 to 2 mm and a slit length of 380 mm.
The sheet extruded from the T-die was adjusted with a roll in a range of roll rotation speed of 0.8 to 1.2 m / min to obtain a sheet with a desired thickness while balancing the discharge amount.

The molding method and main molding conditions of the molded product are shown in Table 1.
(1) Flame retardancy A strip-shaped molded body (thickness 0.1 mm to 3.0 mm) for a combustion test was molded by an injection molding machine at a cylinder set temperature of 320 ° C. and a mold temperature of 40 to 120 ° C. After holding in an environment of temperature 23 ° C. and humidity 50% for 2 days, a 50 W (20 mm) vertical combustion test is performed according to UL94 standard, and VTM-0, V-0, V-1, V-2, 5VB, It was classified into NC (NC is non-classification).
(Degree of flame retardancy of V-0, V-1, and V-2 (left is good): V-0>V-1>V-2> NC)
Moreover, the extrusion molded object cut out the test piece according to UL94 specification from the molded object, performed the combustion test, and evaluated combustibility similarly to the injection molded object.
(2) Surface roughness (arithmetic surface roughness Ra)
For the measurement of the surface roughness, the surface state was observed using an ultra-deep color 3D shape measurement microscope (Model: VK-H1A9) manufactured by KEYENCE, and the arithmetic surface roughness (Ra) described in JIS B0601 was measured.
(3) Total light transmittance T (%), diffused light transmittance D (%), haze (D / T) (%)
According to JIS K7105, it measured using the Nippon Denshoku Industries Co., Ltd. make and a haze meter (Model: NDH-1001DP).
(4) Flexural modulus The flexural modulus was measured according to ISO178.

Claims (10)

100 parts by weight of a resin component (A) mainly composed of an aromatic polycarbonate, 0.1 to 20 parts by weight of a silicate compound (B) whose composition is substantially represented by the following formula (1),
x MO · y SiO ₂ · z H ₂ O (1)
(Here, x and y represent natural numbers, z represents an integer of 0 or more, M 2 O represents a metal oxide component, and a plurality of different metal oxide components may be used.)
Mainly composed of aromatic polycarbonate composed of 0.001 to 3 parts by weight of one compound (C) selected from organic sulfonic acid, organic sulfonic acid ester, organic phosphonic acid phosphonium salt, organic sulfonic acid ammonium salt and organic carboxylic acid. A molded body using a resin composition, wherein a haze represented by a ratio (D / T) of total light transmittance T and diffused light transmittance D of the molded body is 60% or more. A molded product. The resin composition mainly comprising an aromatic polycarbonate containing 0.001 to 1 part by weight of at least one organic acid metal salt (D) selected from organic acid alkali metal salts and organic acid alkaline earth metal salts. The molded article according to claim 1, wherein the molded article is a product. The molded article according to claim 1 or 2, wherein the composition is a resin composition mainly composed of an aromatic polycarbonate containing 0.01 to 1 part by weight of a fluoropolymer (E). The resin composition mainly comprising an aromatic polycarbonate contains a diffusing agent composed of at least one of silicone-based fine particles, acrylic-based fine particles, glass, and barium sulfate. The molded body described. The molded product according to any one of claims 1 to 4, wherein the resin composition mainly comprising an aromatic polycarbonate contains an ultraviolet absorber.   6. The arithmetic mean roughness (Ra) described in JIS B0601 in the surface roughness of at least one side of the molded body is 1 μm or more, according to any one of claims 1 to 5. Molded body.   The molded body according to any one of claims 1 to 6, wherein the molded body has a sheet-like shape.   The molded body according to any one of claims 1 to 7, wherein the molded body is a diffusion plate.   The molded body according to any one of claims 1 to 8, wherein the molded body is a diffusion film having a thickness of 0.4 mm or less.   The molded article has flame retardancy of any of VTM-0, V-0, V-1, V-2, 5VA, and 5VB by a test method according to UL94 standard. The molded product according to any one of 9.