JP2018016668A - Thermoplastic resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition having low haze and excellent transparency, and having sufficient anti-fogging and heat ray-shielding properties.SOLUTION: The problem is solved by melting and mixing a polycarbonate resin and/or an acrylic resin, a water dispersion having metal oxide dispersed in water, and a polyglyceryl fatty acid ester composed of a polyglycerol with an average degree of polymerization of 2-20 and at least one of a C2-C22 saturated fatty acid or unsaturated fatty acid.SELECTED DRAWING: None

Description

  The present invention relates to a thermoplastic resin composition and a molded body using the same.

  An antifogging property is required for a lens cover of a housing and a window glass for a building constituting an automotive headlamp, and a method of adding an antifogging agent has been proposed. For example, in Patent Document 1, the coating composition for forming an antifogging film is composed of a (meth) acrylic acid ester containing a quaternary ammonium salt and a copolymer formed from a vinyl ester such as methoxysilane. Have been proposed. However, since this coating composition contains a quaternary ammonium salt in the (meth) acrylic acid ester, it tends to decompose particularly when placed in a heated environment for a long period of time. There was a problem that the appearance was rough and deteriorated.

  In Patent Document 2, initial transparency, dustproof property, antifogging durability and weather resistance of a resin composition containing a triazine-based ultraviolet absorber and an ultraviolet absorber made of a metal oxide such as zinc oxide or titanium oxide in a polyolefin resin. Agricultural films having properties have been proposed. However, performance degradation due to the formation of metal oxide aggregates has been a problem.

Moreover, not only anti-fogging properties but also heat ray shielding properties and transparency are required for architectural and vehicle window glass. In Patent Document 3, transparency, impact resistance, water resistance are obtained by using a method of dispersing LaB ₆ (lanthanum hexaboride) fine particles and ITO (tin-doped indium oxide) fine particles as heat ray shielding components in a polycarbonate resin or an acrylic resin. A heat ray shielding resin sheet material having excellent properties has been developed. However, the transparency in the visible light region is low, and it is difficult to say that sufficient performance is satisfied.

JP 2002-265853 A JP 2003-325060 A Japanese Patent No. 4187999 Specification

  An object of the present invention is to provide a thermoplastic resin composition having low haze, excellent transparency, sufficient antifogging properties and heat ray shielding properties, and suitable for vehicles, general buildings or electronic parts. It is.

  The above problem is solved by melt-kneading a polycarbonate resin and / or an acrylic resin, an aqueous dispersion in which a metal oxide is dispersed in water, and a polyglycerin fatty acid ester.

  Since the thermoplastic resin composition of the present invention and a molded article using the same have low haze, excellent transparency, and sufficient antifogging properties and heat ray shielding properties, the housing of the automotive headlamp and taillight Lens covers, automotive window glass, general building window glass, electronic parts such as circuit boards and sensor boards with heaters, roofing materials such as arcades and carports, optical materials such as infrared cut filters, agricultural films, etc. Can be used.

  The mode for carrying out the present invention will be described in more detail below, but the scope of the present invention is not limited to this embodiment, and changes and the like are made without departing from the spirit of the present invention. The form also belongs to the present invention. Note that the notation “˜” representing a range includes an upper limit and a lower limit.

  The polycarbonate resin used in the present invention is not particularly limited as long as it is a resin having transparency. Additives are added to dihydric phenols as a raw material of the resin, and they are uniformly mixed by a known method. A commercially available product synthesized by reacting with a carbonate precursor exemplified by phosgene can be used. Specific examples of the polycarbonate resin include IUPILON ML-100 (manufactured by Mitsubishi Engineering Plastics), NOVAREX 7022L1 (manufactured by Mitsubishi Engineering Plastics), TARFLON 41900R (manufactured by Idemitsu Kosan), TARFLON 42200R (manufactured by Idemitsu Kosan), Caliber 301 -4 (manufactured by Sumika Stylon Polycarbonate), Caliber 301-22 (manufactured by Sumika Stylon Polycarbonate), and the like.

  The acrylic resin used in the present invention is not particularly limited as long as it is a resin having transparency, and an additive solution is added to methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, and the like, which are raw materials for the acrylic resin, It can synthesize | combine by mixing uniformly by a well-known method, and making it superpose | polymerize by well-known methods, such as suspension polymerization and block polymerization. Specific examples of the acrylic resin include polymethyl methacrylate resins such as Acrypet VH (manufactured by Mitsubishi Rayon Co., Ltd.), PARAPET HR-F (manufactured by Kuraray Co., Ltd.), and DELPET 70H (manufactured by Asahi Kasei Co., Ltd.).

  The polyglycerol fatty acid ester used in the present invention contributes to the improvement of the dispersibility of the metal oxide with respect to the thermoplastic resin. The details of the effect of polyglycerin fatty acid ester are not clear, but improvement of fluidity of thermoplastic resin composition when melt-kneading thermoplastic resin, metal oxide aqueous dispersion, or thermoplastic resin and metal oxidation It is presumed that the improvement of the affinity of things and the improvement of wettability are factors.

The polyglycerin constituting the polyglycerin fatty acid ester of the present invention is preferably a polyglycerin having an average degree of polymerization calculated from a hydroxyl value of 2 to 20, more preferably an average degree of polymerization of 4 to 10. To do. Specific examples of polyglycerin include diglycerin, triglycerin, tetraglycerin, hexaglycerin, decaglycerin and the like, and commercially available products include diglycerin S, polyglycerin # 310, polyglycerin # 500, and polyglycerin # 750. (Both manufactured by Sakamoto Pharmaceutical Co., Ltd.) can be used. Here, the average degree of polymerization is the average degree of polymerization (n) of polyglycerin calculated from the hydroxyl value by end group analysis. Specifically, the average degree of polymerization is calculated from the following formulas (Formula 1) and (Formula 2).
(Formula 1) Molecular weight = 74n + 18
(Formula 2) Hydroxyl value = 56110 (n + 2) / Molecular weight The hydroxyl value in the above (Formula 2) is a numerical value that serves as an index of the number of hydroxyl groups contained in polyglycerin, and is contained in 1 g of polyglycerin. The number of milligrams of potassium hydroxide required to neutralize the acetic acid required to acetylate the hydroxyl group. The number of milligrams of potassium hydroxide is calculated according to the Japan Oil Chemists 'Society, “Established by the Japan Oil Chemists' Society, Standard Oil and Fat Analysis Test Method, 2013 edition”.

  Moreover, in the polyglycerin having an average degree of polymerization calculated from the hydroxyl value of 2 to 20 except for diglycerin having an average degree of polymerization of 2, generally a composition having a molecular weight distribution is used. Two or more kinds of polyglycerols having different molecular weight distributions may be mixed. If the average degree of polymerization calculated from the hydroxyl value of the polyglycerol mixture is 2 to 20, the average degree of polymerization is less than 2, and 20 More than polyglycerol can be used.

  The fatty acid constituting the polyglycerol fatty acid ester used in the present invention is preferably at least one kind of saturated fatty acid or unsaturated fatty acid having 2 to 22 carbon atoms, and may be linear or branched. More preferably, it has 8 to 18 carbon atoms. Specific examples of fatty acids include acetic acid, propionic acid, butyric acid, caproic acid, caprylic acid, 2-ethylhexanoic acid, 3,5,5'-trimethylhexanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearin Acids, isostearic acid, oleic acid, behenic acid, erucic acid and the like can be mentioned, and preferred fatty acids include 2-ethylhexanoic acid, caprylic acid, capric acid, stearic acid, oleic acid and the like. In addition, the fatty acid to be used is not limited to these. These may be used alone or in combination of two or more.

The SP value (solubility parameter) of the polyglycerol fatty acid ester used in the present invention is preferably 8.0 to 15.0 (cal / cm ³ ) ^1/2 , and 9.5 to 14.0 ( cal / cm ³ ) ^1/2 is more preferable. The solubility parameter here can be calculated by the method (Fedors method) described in “Polymer Engineering and Science, Vol. 14, No. 2, p 147-154 (1974)”. The SP value can be expressed by the following equation.
SP value (δ) = (ΔH / V) ^1/2
In the formula, ΔH represents the heat of vaporization (cal), and V represents the molar volume (cm ³ ). Further, as ΔH and V, the total heat of molar evaporation (ΔH) and the total volume (V) of the atomic groups described in pages 151 to 153 of the above-mentioned document can be used. Those having a close numerical value are easy to mix with each other (high compatibility), and those having a close numerical value are indices that indicate that they are difficult to mix. When the SP value of the polyglycerol fatty acid ester is 8.0 to 15.0, the compatibility with the thermoplastic resin is high, and the generation of bleeding over time and the dispersibility of the metal oxide are improved. This leads to a decrease in haze value.

  Specific examples of the polyglycerin fatty acid ester used in the present invention include diglycerin caprylate, diglycerin laurate, diglycerin-2-ethylhexanoate, diglyceryl stearate, diglycerin oleate, diglycerin isostearate. , Diglycerin behenate, diglycerin erucate, tetraglycerin caprylate, tetraglycerin laurate, tetraglycerin-2-ethylhexanoate, tetraglyceryl stearate, tetraglycerin oleate, tetraglycerin isostearate, tetraglycerin base Hephenate, tetraglycerin ercate, hexaglycerin caprylate, hexaglycerin laurate, hexaglycerin-2-ethylhexanoate, hexaglyceryl stearate, hex Glycerol oleate, hexaglycerin isostearate, hexaglycerin stearate, hexaglycerin oleate, hexaglycerin behenate, hexaglycerin ercate, decaglycerin caprylate, decaglycerin laurate, decaglycerin-2-ethylhexanoate, deca Examples thereof include, but are not limited to, glyceryl stearate, decaglycerin oleate, decaglycerin isostearate, decaglycerin stearate, decaglycerin oleate, decaglycerin behenate, decaglycerin elcate, and the like. These may be used alone or in combination of two or more.

  The polyglycerol fatty acid ester used in the present invention can be synthesized by a known esterification reaction exemplified below. For example, after adding an alkali catalyst such as sodium hydroxide to polyglycerin and fatty acid, the esterification reaction is carried out under normal pressure or reduced pressure, and the charged fatty acid is esterified and allowed to react sufficiently until there is almost no free fatty acid. . However, it is not limited to this.

  The blending ratio of the polycarbonate resin and / or acrylic resin and polyglycerin fatty acid ester used in the present invention is 0.01 to 10 parts by weight of polyglycerin fatty acid ester with respect to 100 parts by weight of the polycarbonate resin and / or acrylic resin. It is preferably 0.02 to 5 parts by weight. When the blending ratio of the polyglycerin fatty acid ester is less than 0.01 parts by weight, the dispersion stability of the metal oxide with respect to the thermoplastic resin composition may be lowered. Moreover, when it exceeds 10 weight part, the transparency of a thermoplastic resin composition and a molded object using the same may be impaired.

  The metal oxide used in the present invention is not particularly limited as long as it is a metal oxide having heat ray shielding properties, but tin-doped indium oxide, antimony-doped tin oxide, antimony-doped zinc oxide, aluminum-doped zinc oxide, indium-doped Examples thereof include zinc oxide, gallium-doped zinc oxide, tungsten oxide, and cerium-tungsten composite oxide, and preferred are tin-doped indium oxide, antimony-doped tin oxide, and antimony-doped zinc oxide. These may be used alone or in combination of two or more. The metal oxide used in the present invention has a primary particle diameter of 80 nm or less, preferably 50 nm or less, by a laser diffraction / scattering method or the like.

  The blending ratio of the polycarbonate resin and / or acrylic resin and metal oxide used in the present invention is such that the solid content of the metal oxide is 0.05 to 10 parts by weight with respect to 100 parts by weight of the polycarbonate resin and / or acrylic resin. And preferably 0.1 to 5 parts by weight. If the solid content content of the metal oxide is less than 0.05 parts by weight, sufficient heat ray shielding properties may not be obtained, and if it exceeds 10 parts by weight, a thermoplastic resin composition and the same are used. The transparency of the molded body may be impaired.

  The metal oxide is dispersed in water and used as an aqueous dispersion. In the case where the metal oxide is used in a powder state, the dispersibility with respect to the thermoplastic resin becomes insufficient, which may cause an increase in haze value. Therefore, it is necessary to use it as an aqueous dispersion. The concentration of the metal oxide in the aqueous dispersion is preferably 1 to 50% by weight.

  The aqueous dispersion of the metal oxide may be liquid or solid, and if it is solid, it may be any one that recovers its liquidity by vigorous stirring or shaking. It is preferable that the volume average particle diameter is 100 nm or less and the cumulative 90% particle diameter (D90) is 230 nm or less.

  In an aqueous dispersion having a metal oxide concentration of 1 to 50% by weight, the volume average particle size of the metal oxide is 100 nm or less, and the cumulative 90% particle size (D90) is 230 nm or less. The volume average particle diameter can be measured and calculated by a particle size distribution measuring apparatus using a dynamic light scattering method. When the average particle diameter of the metal oxide exceeds 100 nm or D90 exceeds 230 nm, when the thermoplastic resin composition and the molded body using the same are mixed with a resin, these transparency is inferior. Sometimes.

  The thermoplastic resin composition of the present invention is prepared by melt-kneading a polycarbonate resin and / or an acrylic resin, an aqueous dispersion of a metal oxide, and a polyglycerol fatty acid ester. A kneading machine is not specifically limited, Well-known kneading machines, such as a twin-screw extruder, a kneader, a 3 roll mill, a Banbury mixer, an open roll, are mentioned. Also, at the time of kneading, melt kneading at a resin temperature of 200 ° C. or higher, and then rapidly cooling to 100 ° C. or lower, cutting as necessary to form a pellet, then melt extruding this to produce a molded body, It may be melted at a resin temperature of 200 ° C. or higher and rapidly cooled to 100 ° C. or lower to directly produce a molded body such as a film. When the resin temperature is less than 200 ° C., the dispersibility of the metal oxide becomes insufficient and the haze value may increase.

  The thermoplastic resin composition of the present invention is prepared by blending an aqueous dispersion of a metal oxide and melting and kneading at a temperature of 200 ° C. or higher. The water content in the thermoplastic resin composition is 0% during the melt kneading. However, the water derived from the metal oxide aqueous dispersion may remain in the thermoplastic resin composition.

  The method for molding a molded body from the thermoplastic resin composition of the present invention is not particularly limited, and examples thereof include injection molding, injection blow molding, injection compression molding, injection press, hot press, blow molding, film and the like. Any of extrusion molding of sheets and the like, profile extrusion molding, mature molding, and rotational molding can be applied. The shape of the molded body can be formed into an arbitrary shape as necessary, but preferably has a planar or curved plate-like portion. The plate-like thickness is not particularly limited, but a plate-like portion having a thickness of 0.2 mm or more and 10 mm or less exists. The thickness of the plate-like portion is preferably 1 mm or more and 10 mm or less.

  Moreover, as a molded object of this invention, it has a plate-shaped part of thickness 0.2mm-10mm, Comprising: The haze in the said plate-shaped part in this molded object is less than 10%, and the spectral transmittance in 2000 nm is. It is less than 10.0%, preferably the haze is less than 5% and the spectral transmittance at 2000 nm is less than 10.0%, more preferably the haze is less than 5% and the spectral transmittance at 2000 nm is 5.0. %.

  It is preferable that the thermoplastic resin composition of the present invention further contains an antioxidant. The antioxidant is not particularly limited. For example, 2,6-Di-tert-butyl-P-cresol (BHT) [“Sumirider BHT” manufactured by Sumitomo Chemical Co., Ltd.], tetrakis- [methylene -3- (3′-5′-di-t-butyl-4′-hydroxyphenyl) propionate] methane [manufactured by BASF: Irganox 1010] and the like. These antioxidants may be used alone or in combination of two or more. Although the addition amount of the antioxidant is not particularly limited, it is preferably 0.01 to 5.0 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition.

  The thermoplastic resin composition of the present invention preferably further contains an ultraviolet absorber. The ultraviolet absorber is not particularly limited, and examples thereof include benzotriazole compounds, benzophenone compounds, triazine compounds, and benzoate compounds.

  The benzotriazole-based compound is not particularly limited. For example, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole [manufactured by BASF: TinuvinP], 2- (2′-hydroxy-3 ′, 5 ′ -Di-t-butylphenyl) benzotriazole [manufactured by BASF: Tinuvin 320], 2- (2′-hydroxy-3′-t-butyl-5′-methylphenyl) -5-chlorobenzotriazole [manufactured by BASF: Tinuvin 326], 2- (2′-hydroxy-3 ′, 5′-di-aminophenyl) benzotriazole [manufactured by BASF: Tinuvin 328] and the like.

  The benzophenone-based compound is not particularly limited, and examples thereof include octabenzone [manufactured by BASF: Chimassorb 81]. The triazine-based compound is not particularly limited. For example, 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol [manufactured by BASF Corporation] : Tinuvin 1577FF] and the like. Furthermore, the benzoate-based compound is not particularly limited, and examples thereof include 2,4-di-tert-butylphenyl-3,5-di-tert-butyl-4-hydroxybenzoate [manufactured by BASF: Tinuvin 120]. It is done.

  Although the addition amount of the said ultraviolet absorber is not specifically limited, Preferably it is 0.01 weight part-5.0 weight part with respect to 100 weight part of thermoplastic resin compositions. If it is less than 0.01 part by weight, the effect of absorbing ultraviolet rays is hardly obtained. If it exceeds 5.0 parts by weight, the weather resistance of the resin may be deteriorated.

  The thermoplastic resin composition of the present invention and a molded body using the same are further optionally provided with a light stabilizer, a surfactant, a flame retardant, an antistatic agent, a moisture-resistant agent, a colorant, a heat ray reflective agent, and a heat ray absorbing agent. You may contain additives, such as an agent.

  The thermoplastic resin composition of the present invention and a molded body using the same are a lens cover of a housing constituting a headlight and a taillight for an automobile, a window glass for an automobile, a window glass for general construction, a circuit board with a heater, It can be used as electronic parts such as sensor substrates, roofing materials such as arcades and carports, optical materials such as infrared cut filters, agricultural films and the like, but is not limited thereto.

EXAMPLES Hereinafter, although an Example etc. demonstrate this invention in detail, this invention is not limited to these Examples. Moreover, the measuring method was performed with the following method, respectively.
(Measurement of anti-fogging property)
The test piece was left to stand in an atmosphere of 23 ° C. and 50 RH% for 24 hours, and the heated test piece was sprayed from a distance of 20 to 30 cm from the test piece surface under the same conditions, and the antifogging property of the obtained molded body was evaluated. The case where cloudiness did not occur even when repeated exhalation was blown was marked as ◎, the case where cloudiness occurred temporarily when repeated exhalation, but ○ which became transparent immediately, and the case where cloudiness occurred when repeated exhalation was given as x.
(Measure haze)
Using a turbidimeter (Murakami Color Co., Ltd .: HM-150), the haze of the obtained molded product was measured. A sample having a haze of less than 5.0% was evaluated as ◎, a sample having a haze of less than 5.0% and less than 10.0% was evaluated as ○, and a sample having a haze of 10.0% or more as ×.
(Measurement of spectral transmittance)
Using a spectrophotometer (manufactured by Hitachi High-Tech Co., Ltd .: U4100), the spectral transmittance of the obtained molded product was measured at 300 to 2700 nm. The heat ray shielding property is evaluated by using the spectral transmittance at 2000 nm, and ◎ is less than 5.0%, ◯ is 5.0% or more and less than 10.0%, and × is 10.0% or more. It was.

Example 1
For 100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, manufactured by Sumika Stylon Polycarbonate), 0.5 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin mono 0.15 parts by weight of oleate (product name “MO-7S”, Sakamoto Yakuhin Kogyo Co., Ltd.) was added, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Examples 2-3)
Except having changed the addition amount of the ITO water dispersion used in Example 1, each thermoplastic resin composition and the molded object were obtained by the method similar to Example 1. FIG.

Example 4
100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, manufactured by Sumika Stylon Polycarbonate), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin mono 0.15 parts by weight of caprylate (product name “MCA-750”, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Example 5)
100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, manufactured by Sumika Stylon Polycarbonate), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin mono 0.15 part by weight of stearate (product name “S-1001P”, manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added, and this was sufficiently kneaded with a twin screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Example 6)
100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, Sumika polycarbonate), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and diglycerin monooleate (product) The name “MO-150” (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added in an amount of 0.15 parts by weight, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Example 7)
100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, manufactured by Sumika Stylon Polycarbonate), 1.0 part by weight of ITO aqueous dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin deca 0.15 parts by weight of the rate (product name “DAO-7S”, Sakamoto Yakuhin Kogyo Co., Ltd.) was added, and this was sufficiently kneaded with a twin screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Comparative Example 1)
To 100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, manufactured by Sumika Stylon Polycarbonate), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) was added. Was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Comparative Example 2)
100 parts by weight of polycarbonate resin (product name “Caliber 301-22”, manufactured by Sumika Stylon Polycarbonate) and 0.15 parts by weight of decaglycerin monooleate (product name “MO-7S”, manufactured by Sakamoto Pharmaceutical Co., Ltd.) This was sufficiently kneaded with a twin screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

  The antifogging properties, haze and spectral transmittance of the molded products obtained in Examples 1 to 7 and Comparative Examples 1 and 2 were measured, and the results are shown in Table 1.

  In Examples 1 to 7, compared with Comparative Example 1, the dispersibility of the metal oxide in the thermoplastic resin composition was improved and the transparency was increased. Moreover, compared with the comparative example 2, it became clear that antifogging property was high and it had heat ray shielding property. Therefore, a thermoplastic resin having a low haze, excellent transparency, and sufficient antifogging properties and heat ray shielding properties by melt-kneading a polycarbonate resin, an aqueous dispersion of a metal oxide, and a polyglycerol fatty acid ester. It became clear that a composition was obtained.

(Example 8)
For 100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.), 0.5 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin monooleate (product) The name “MO-7S” (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added in an amount of 0.15 parts by weight, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Examples 9 to 10)
Except having changed the addition amount of the ITO water dispersion used in Example 8, each thermoplastic resin composition and the molded object were obtained by the same method as Example 8.

(Example 11)
To 100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin monocaprylate ( 0.15 parts by weight of product name “MCA-750” (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

Example 12
For 100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin monostearate ( 0.15 parts by weight of product name “S-1001P” (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added, and this was sufficiently kneaded with a twin screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Example 13)
100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.) 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and diglycerin monooleate (product) The name “MO-150” (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added in an amount of 0.15 parts by weight, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Example 14)
100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.) 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) and decaglycerin dekaorate (product The name “DAO-7S” (manufactured by Sakamoto Yakuhin Kogyo Co., Ltd.) was added in an amount of 0.15 parts by weight, and this was sufficiently kneaded with a twin-screw extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Comparative Example 3)
To 100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.), 1.0 part by weight of ITO water dispersion (ITO concentration 20% by weight, manufactured by Mitsubishi Materials) is added, and this is biaxial. The mixture was sufficiently kneaded with an extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

(Comparative Example 4)
Add 100 parts by weight of acrylic resin (product name “Acrypet VH”, manufactured by Mitsubishi Rayon Co., Ltd.) and 0.15 parts by weight of decaglycerin monooleate (product name “MO-7S”, manufactured by Sakamoto Pharmaceutical Co., Ltd.). The mixture was sufficiently kneaded with a shaft extruder to obtain a thermoplastic resin composition. Next, a molded body having a thickness of 1.0 mm was obtained using an injection molding machine.

  The antifogging properties, haze, and spectral transmittance of the molded products obtained in Examples 8 to 14 and Comparative Examples 3 and 4 were measured, and the results are shown in Table 2.

  In Examples 8 to 14, compared to Comparative Example 3, the dispersibility of the metal oxide in the thermoplastic resin composition was improved, and the transparency was increased. Moreover, compared with the comparative example 4, it became clear that antifogging property was high and it had heat ray shielding property. Therefore, a thermoplastic resin having a low haze, excellent transparency, and sufficient antifogging properties and heat ray shielding properties by melt-kneading an acrylic resin, a metal oxide aqueous dispersion, and a polyglycerol fatty acid ester. It became clear that a composition was obtained.

  The thermoplastic resin composition of the present invention and a molded body using the same are used for general building or vehicle windows, window parts, and electronic parts, particularly housing lens covers and heaters that constitute automotive headlamps and taillights. It can be used for circuit boards and sensor boards.

Claims (7)

  A thermoplastic resin composition comprising an aqueous dispersion of a metal oxide and a polyglycerin fatty acid ester in a polycarbonate resin and / or an acrylic resin.   The polyglycerol fatty acid ester is a polyglycerol fatty acid ester composed of at least one of a polyglycerol having an average degree of polymerization of 2 to 20 and a saturated or unsaturated fatty acid having 2 to 22 carbon atoms. 2. The thermoplastic resin composition according to 1.   The thermoplastic resin composition according to any one of claims 1 to 2, wherein 0.01 to 10 parts by weight of a polyglycerol fatty acid ester is contained with respect to 100 parts by weight of the polycarbonate resin and / or the acrylic resin. .   It is a molded object formed by shape | molding the thermoplastic resin composition in any one of Claim 1 to 3, Comprising: It has a plate-shaped part of thickness 0.2-10mm, Comprising: The said in said molded object A molded body characterized in that the haze in the plate-like portion is less than 10%.   It is a molded object formed by shape | molding the thermoplastic resin composition in any one of Claim 1-4, Comprising: The spectral transmittance in 2000 nm of the said plate-shaped part in this molded object is less than 10.0%. A molded product characterized by that.   The molded article according to any one of claims 4 to 5, wherein the molded article is for a vehicle, a general building, or an electronic component.   The method for producing a thermoplastic resin composition according to any one of claims 1 to 3, wherein the thermoplastic resin composition is obtained by melt-kneading.