JP6115246B2 - Automotive interior and exterior parts - Google Patents

Description

  The present invention relates to an automobile interior / exterior part made of a resin composition.

In the automobile industry, users' needs for automobile interiors are diversified. For example, interior resin parts are decorated with jet black, metallic, wood, fabric, and the like. Among such resin decorative parts, there is a metallic resin decorative part as one of particularly high market demands.
In recent years, metallic decorative resin-decorated parts are required for products with only colorants (dyeing pigments) mixed with resin from the so-called coating with paints when coloring resin parts from the viewpoint of environmental problems and costs. There is a need for a method of developing a color tone. In particular, since the product has a high-class feeling and profound feeling, the demand for a design property equivalent to that of a coated product has been increasing in recent years. It has been demanded. A resin material having a glittering texture is manufactured by kneading plate-like metal powder into a resin. For example, silver color is given by mixing aluminum powder with resin (for example, refer to patent documents 1).

  A polycarbonate resin is also a resin composition containing polycarbonate resin (A), metallic pigment (B) and other colorant (C) as essential components, which is obtained by injection molding the resin composition. There has been disclosed a metallic polycarbonate resin composition excellent in appearance in which the light transmittance of the product is in a specific range, and a molded product comprising the same (for example, see Patent Document 2).

  On the other hand, since the bisphenol compound used for the conventional polycarbonate resin has an aromatic ring, the ultraviolet absorption is large, and this tends to affect the light resistance of the polycarbonate resin. For this reason, if a cyclic dihydroxy compound monomer unit having an ether bond in the molecule, such as an aliphatic dihydroxy compound having no aromatic ring in the molecular skeleton, an alicyclic hydrocarbon dihydroxy compound, or isosorbide, is used in principle. Is expected to have improved light resistance. Among them, a polycarbonate resin using isosorbide obtained from biomass resources as a monomer is excellent in heat resistance and mechanical strength, so that many studies have been made in recent years (for example, Patent Documents 3 to 7). .

JP-A-8-41284 JP 2010-006861 A International Publication No. 04/111106 Pamphlet Japanese Patent Laid-Open No. 2006-232897 JP 2006-28441 A JP 2008-24919 A JP 2009-74029 A

However, the characteristics required for automobile interior and exterior parts are not only coloring, but also severe environmental conditions such as constant exposure to sunlight containing ultraviolet rays outdoors in the daytime and the rise of the interior temperature in the summer. Therefore, weather resistance is required. Also, in order to prevent injury to occupants and pedestrians in the event of an automobile collision, impact resistance is required so that the fracture surface of the component is ductile. Furthermore, it is desired that the surface is not easily scratched by nails or accessories when a car is washed using an automatic car washer or when a switch such as an audio or navigation system is operated.

That is, conventionally, there has been a problem that an automobile interior / exterior part having design characteristics, heat resistance, weather resistance, and impact resistance in a molded product of a resin composition cannot be obtained.
The object of the present invention is to solve the above-mentioned conventional problems, have a design property (deep coloring, sharpness, lustrous texture, etc.), and at the same time have heat resistance, weather resistance and impact resistance. And providing an interior / exterior part of an automobile.

  As a result of intensive studies, the inventor has obtained a polycarbonate resin containing a structural unit derived from a dihydroxy compound represented by the following general formula (1) and a structural unit derived from cyclohexanedimethanol, and aluminum, gold, silver, An automotive interior / exterior part comprising a polycarbonate resin composition comprising a pigment comprising at least one metal selected from the group consisting of copper, nickel, titanium and stainless steel, and a hindered amine light stabilizer, wherein the pigment in the resin composition When the amount of the hindered amine stabilizer is a specific amount, it has been found that the automotive interior / exterior part has design properties and at the same time satisfies the heat resistance, weather resistance and impact resistance.

That is, the gist of the present invention resides in the following [1] to [11].
[1] A polycarbonate resin including a structural unit derived from a dihydroxy compound represented by the following general formula (1) and a structural unit derived from cyclohexanedimethanol, and aluminum, gold, silver, copper, nickel, titanium, and stainless steel. An automotive interior / exterior component comprising a resin composition comprising a pigment comprising at least one metal selected from the group and a hindered amine light stabilizer,
Automotive interior / exterior parts in which the pigment in the resin composition is 0.01 to 50 parts by weight with respect to 100 parts by weight of the polycarbonate resin and the hindered amine light stabilizer is 0.001 to 5 parts by weight. .

[2] In the polycarbonate resin, the structural unit derived from the dihydroxy compound represented by the general formula (1) is 50 mol% to 70 mol%, and the structural unit derived from the cyclohexanedimethanol is 30 mol% to The automotive interior / exterior part according to the above [1], which is 50 mol%.
[3] The above [1], wherein the molar ratio of the structural unit derived from the dihydroxy compound represented by the general formula (1) and the structural unit derived from cyclohexanedimethanol in the polycarbonate resin is 50/50 to 80/20. ] The interior / exterior parts for automobiles according to [2].

[4] The automotive interior / exterior part according to any one of [1] to [3], wherein the pigment has a volume average particle diameter of 20 μm or less.
[5] The automotive interior / exterior component according to any one of [1] to [4], wherein the pigment has an average thickness of 0.1 μm to 1.5 μm.
[6] The above [1] to [[], wherein the ratio of the volume average particle diameter to the average thickness of the pigment is 1 to 100.
[5] The automotive interior / exterior component according to any one of [5].

[7] The above [1] to [6], wherein the pigment is surface-treated with at least one compound selected from the group consisting of wax, modified polyolefin, metal soap, silane coupling agent and titanate coupling agent. The interior / exterior parts for automobiles according to any of the above.
[8] The automotive interior / exterior part according to any one of [1] to [7], wherein the pigment is a pigment made of aluminum.

[9] The automobile interior and exterior according to any one of [1] to [8], wherein the resin composition contains 0.00001 part by weight or more and 3 parts by weight or less of a colorant with respect to 100 parts by weight of the polycarbonate resin. parts.
[10] The automotive interior / exterior part according to any one of [1] to [9], wherein the hindered amine light stabilizer has a molecular weight of 1000 or less.

  [11] The automotive interior / exterior component according to any one of [1] to [10], wherein the automotive interior / exterior component is formed by injection molding or injection compression molding the resin composition.

  The automotive interior / exterior parts of the present invention have design properties (deep coloring, sharpness, lustrous texture, etc.), retain a high-class feeling and profound feeling, and have excellent heat resistance, weather resistance and resistance. Since it has impact properties, it can be applied to automobile exterior parts such as side garnishes and radiator grills, and automobile interior parts such as instrument panels and center console panels.

SEM photograph of NME005N1 used in the examples

DESCRIPTION OF EMBODIMENTS Embodiments of the present invention will be described in detail below. However, the description of the constituent elements described below is an example (representative example) of an embodiment of the present invention. It is not limited to the contents.
<Polycarbonate resin>
The polycarbonate resin used in the present invention is a polycarbonate resin containing a structural unit derived from a dihydroxy compound represented by the following general formula (1) and a structural unit derived from cyclohexanedimethanol.

Examples of the dihydroxy compound represented by the general formula (1) include isosorbide, isomannide, and isoidet, which are in a stereoisomeric relationship, and these may be used alone or in combination of two or more. It may be used.
Among them, isosorbide obtained by dehydrating and condensing sorbitol produced from various starches that are abundant as plant-derived resources is easy to obtain and manufacture, moldability, heat resistance, and impact resistance. Most preferable from the viewpoints of properties, surface hardness, and carbon neutral.

  Since the dihydroxy compound represented by the general formula (1) has a cyclic ether structure, it is likely to be gradually oxidized by oxygen. Therefore, during storage and production, in order to prevent decomposition by oxygen, prevent moisture from being mixed, Further, it is preferable to use an oxygen scavenger or the like or handle under a nitrogen atmosphere. When isosorbide is oxidized, decomposition products such as formic acid may be generated. For example, when isosorbide containing these decomposition products is used as a raw material for producing a polycarbonate resin, there is a possibility that the resulting polycarbonate resin and resin composition may be colored, and the physical properties may be significantly deteriorated. The polymerization reaction may be affected, and a high molecular weight polymer may not be obtained.

  On the other hand, examples of cyclohexanedimethanol include 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, and 1,4-cyclohexanedimethanol, and 1,4-cyclohexanedimethanol is preferable from the viewpoint of availability. 1,4-Cyclohexanedimethanol has cis isomer and trans isomer, and the ratio of cis isomer to trans isomer is preferably 30/70 to 0/100, and more easily available than 40/60 to 70 /. 30 is more preferable.

  The polycarbonate resin used in the present invention has heat resistance and impact resistance by using a polycarbonate resin containing a structural unit derived from the dihydroxy compound represented by the general formula (1) and a structural unit derived from cyclohexanedimethanol. It becomes a good polycarbonate resin, and when it is a resin composition containing a specific pigment and a hindered amine light stabilizer, it can be further excellent in weather resistance and can be a product that can maintain practically stable physical properties for a long period of time as an automotive interior / exterior part. .

  50 mol% or more is preferable and, as for the structural unit derived from the dihydroxy compound represented by the said General formula (1) in the polycarbonate resin used for this invention, 55 mol% or more is more preferable. Moreover, 70 mol% or less is preferable and 65 mol% or less is more preferable. If the structural unit derived from the dihydroxy compound represented by the general formula (1) is too small, the heat resistance may be lowered, and if it is too large, the impact resistance may be inferior.

  The structural unit derived from cyclohexanedimethanol in the polycarbonate resin used in the present invention is preferably at least 30 mol%, more preferably at least 35 mol%. Moreover, 50 mol% or less is preferable and 45 mol% or less is more preferable. If the number of structural units derived from cyclohexanedimethanol is too small, the impact resistance may be insufficient, and if it is too large, the heat resistance may be insufficient.

  The ratio of the structural unit derived from the dihydroxy compound represented by the general formula (1) and the structural unit derived from cyclohexanedimethanol in the polycarbonate resin used in the present invention is preferably 50/50 to 80/20, 40-70 / 30 is more preferable. If the ratio of the structural unit derived from the dihydroxy compound represented by the general formula (1) to the structural unit derived from cyclohexanedimethanol is too high, the impact resistance may be insufficient, and if it is too low, the heat resistance is insufficient. There is a case.

The polycarbonate resin used in the present invention has a structural unit derived from a dihydroxy compound represented by the general formula (1) or a dihydroxy compound other than cyclohexanedimethanol (hereinafter sometimes referred to as “other dihydroxy compound”). Other dihydroxy compounds that may be included are ethylene glycol, 1,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1,3-butanediol, 1,2-butanediol. Aliphatic dihydroxy compounds such as 1,5-heptanediol and 1,6-hexanediol, tricyclodecane dimethanol, pentacyclopentadecane dimethanol, 2,6-decalin dimethanol, 1,5-decalin dimethanol, 2,3-decalin dimethanol, 2,3-norvo Dihydroxy compounds of alicyclic hydrocarbons such as nadimethanol, 2,5-norbornanedimethanol, 1,3-adamantanedimethanol, 2,2-bis (4-hydroxyphenyl) propane [= bisphenol A], 2, 2-bis (4-hydroxy-3,5-dimethylphenyl) propane, 2,2-bis (4-hydroxy-3,5-diethylphenyl) propane, 2,2-bis (4-hydroxy- (3,5 -Diphenyl) phenyl) propane, 2,2-bis (4-hydroxy-3,5-dibromophenyl) propane, 2,2-bis (4-hydroxyphenyl) pentane, 2,4'-dihydroxy-diphenylmethane, bis ( 4-hydroxyphenyl) methane, bis (4-hydroxy-5-nitrophenyl) methane, 1,1-bis (4-hydride) Xylphenyl) ethane, 3,3-bis (4-hydroxyphenyl) pentane, 1,1-bis (4-hydroxyphenyl) cyclohexane, bis (4-hydroxyphenyl) sulfone, 2,4′-dihydroxydiphenylsulfone, bis ( 4-hydroxyphenyl) sulfide, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3,3'-dichlorodiphenyl ether, 9,9-bis (4- (2-hydroxyethoxy-2-methyl) phenyl) Aromatic bisphenols such as fluorene, 9,9-bis (4-hydroxyphenyl) fluorene, and 9,9-bis (4-hydroxy-2-methylphenyl) fluorene are exemplified.

  Among these, from the viewpoint of light resistance of the polycarbonate resin and the resin composition, a dihydroxy compound having no aromatic ring, that is, an aliphatic dihydroxy compound and / or a dihydroxy compound of an alicyclic hydrocarbon is preferable, and as the aliphatic dihydroxy compound, In particular, 1,3-propanediol, 1,4-butanediol, and 1,6-hexanediol are preferable. As the alicyclic hydrocarbon dihydroxy compound, tricyclodecane dimethanol is particularly preferable.

The structural units derived from other dihydroxy compounds are preferably 10 mol% or less, more preferably 5 mol% or less of the structural units derived from all dihydroxy compounds of the polycarbonate resin.
The polycarbonate resin used in the present invention can be produced by a generally used production method, and the production method may be any of a solution polymerization method using phosgene and a melt polymerization method of reacting with a carbonic acid diester. A melt polymerization method in which a dihydroxy compound is reacted with a diester carbonate having lower toxicity to the environment in the presence of a polymerization catalyst is preferred.
(Carbonated diester)
Examples of the carbonic acid diester used in the melt polymerization method include those represented by the following general formula (2). These carbonic acid diesters may be used alone or in combination of two or more.

(In the general formula (2), A ^1, A ² is an aliphatic or optionally substituted aromatic group having 1 to 18 carbon atoms which may have a substituent group, A ¹ And A ² may be the same or different.)
Examples of the carbonic acid diester represented by the general formula (2) include substituted diphenyl carbonates such as diphenyl carbonate and ditolyl carbonate; dimethyl carbonate, diethyl carbonate and di-t-butyl carbonate.

Among these, diphenyl carbonate and substituted diphenyl carbonate are preferable, and diphenyl carbonate is particularly preferable.
In the melt polymerization method described above, the carbonic acid diester represented by the general formula (2) is 0.90 to 1 with respect to all dihydroxy compounds including at least the dihydroxy compound represented by the general formula (1) used in the reaction. The molar ratio is preferably 10.10, and more preferably 0.96 to 1.04. When the molar ratio of the carbonic acid diester used in the melt polymerization method is excessively small, the terminal hydroxyl group of the produced polycarbonate resin increases, the thermal stability of the polymer deteriorates, and the desired molecular weight tends not to be obtained. On the other hand, if the molar ratio of the carbonic acid diester used is excessively large, the rate of the polycondensation reaction decreases under the same polymerization conditions, and it tends to be difficult to produce a polycarbonate resin having a desired molecular weight.

In addition, as a polymerization catalyst (transesterification catalyst) in melt polymerization, a known alkali metal compound and / or alkaline earth metal compound is used. It is also possible to use a basic compound such as a basic boron compound, a basic phosphorus compound, a basic ammonium compound, and an amine compound together with an alkali metal compound and / or an alkaline earth metal compound.
As the polymerization reaction, a known method can be used, and any method of a batch method, a continuous method, or a combination of a batch method and a continuous method may be used.

  The method of reacting the dihydroxy compound represented by the general formula (I) and the dihydroxy compound containing at least cyclohexanedimethanol with a carbonic acid diester in the presence of a polymerization catalyst is usually carried out in a multistage process of two or more stages. Is preferred. Specifically, the first stage reaction is carried out at a temperature of 140 ° C. to 220 ° C., preferably 150 ° C. to 200 ° C. for 0.1 hour to 10 hours, preferably 0.5 hour to 3 hours. In the second and subsequent stages, the reaction temperature is raised while gradually reducing the pressure of the reaction system from the pressure in the first stage, and the aromatic monohydroxy compound such as phenol that is generated at the same time is removed from the reaction system. Specifically, the polycondensation reaction is performed under a temperature range of 210 ° C. to 280 ° C. under a reaction system pressure of 200 Pa or less.

  In the pressure reduction in the polycondensation reaction, it is important to control the balance between temperature and pressure in the reaction system. In particular, if either one of the temperature and the pressure changes excessively quickly, unreacted monomers are distilled out, the molar ratio of the dihydroxy compound and the carbonic acid diester is changed, and the degree of polymerization may be lowered. For example, when isosorbide and 1,4-cyclohexanedimethanol are used as the dihydroxy compound, 1,4-cyclohexanedimethanol is used when the molar ratio of 1,4-cyclohexanedimethanol exceeds 50 mol% with respect to the total dihydroxy compound. Since methanol easily distills out as a monomer, the reaction is carried out under a reduced pressure of about 13 kPa while the temperature is increased at a rate of temperature increase of 40 ° C. or less per hour, and further up to about 6.67 kPa. When the polycondensation reaction is performed at a temperature of 200 ° C. to 250 ° C. at a pressure of 200 Pa or less at a temperature rising rate of 40 ° C. or less per hour under the pressure of Since the raised polycarbonate resin is obtained, it is preferable.

  When producing a polycarbonate resin, it is desirable to install a filter in the production process of the polycarbonate resin to remove the foreign matter in order to prevent foreign matters from entering. The position of the filter is preferably, for example, during the polycondensation reaction or after the completion of the polycondensation reaction, and the opening of the filter is usually preferably 100 μm or less, more preferably 40 μm or less, and more preferably 10 μm or less as a 99% removal filtration accuracy. preferable.

The polycarbonate resin is usually extruded and pelletized after being kneaded with various additives by an extruder or the like at the final stage of production, and in order to prevent foreign matters from being mixed, the pelletization is preferably JIS B 9920. It is desirable to implement in a clean room having a higher degree of cleanliness than class 7, as defined in (2002), more preferably class 6.
Moreover, when cooling and pelletizing the extruded polycarbonate resin, it is preferable to use a cooling method such as air cooling or water cooling. The air used for air cooling is preferably air from which foreign substances in the air have been removed in advance with a hepa filter or the like to prevent reattachment of foreign substances in the air. When using water cooling, it is preferable to use water from which metal in water has been removed with an ion exchange resin or the like, and further, foreign matter in water has been removed with a filter. The opening of the filter to be used is preferably 10 μm to 0.45 μm as 99% removal filtration accuracy.

The yellowness index of the polycarbonate resin used in the present invention is preferably 5 or less. Further, it is more preferably 3 or less. When the yellowness index is larger than 5, when a colorant is added, a yellowish metallic tone is obtained, and the sharpness may be deteriorated.
The molecular weight of the polycarbonate resin used in the present invention can be represented by a reduced viscosity, and the reduced viscosity is usually preferably 0.30 dL / g or more, and more preferably 0.35 dL / g or more. The upper limit of the reduced viscosity is preferably 1.20 dL / g or less, more preferably 1.00 dL / g or less, and still more preferably 0.80 dL / g or less.

If the reduced viscosity of the polycarbonate resin is too low, the impact resistance of the automobile interior / exterior parts may be small, and if the reduced viscosity is too large, the fluidity when molding the interior / exterior parts of the automobile will be reduced, producing There is a tendency to deteriorate the property and moldability. In addition, the molding temperature must be higher than appropriate, and the color tone may deteriorate.
The reduced viscosity is measured using a Ubbelohde viscometer tube at a temperature of 20.0 ° C. ± 0.1 ° C., using methylene chloride as a solvent and precisely preparing a polycarbonate concentration of 0.6 g / dL.

  The glass transition temperature of the polycarbonate resin used in the present invention is preferably 80 ° C. or higher and 145 ° C. or lower, more preferably 90 ° C. or higher and 135 ° C. or lower, and particularly preferably 100 ° C. or higher and 125 ° C. or lower. If the glass transition temperature is less than 80 ° C., the heat resistance is insufficient, and if it exceeds 145 ° C., the fluidity is insufficient at the time of molding, and the resin composition is not filled to the end of the product, or the strength at the weld part is reduced. Sometimes.

<Pigment>
The pigment used in the present invention is made of at least one metal selected from the group consisting of aluminum, gold, silver, copper, nickel, titanium, and stainless steel. These may be appropriately selected and used depending on the desired color, and one kind may be used alone, or two or more kinds may be mixed and used. For example, in order to develop a silver metallic base color, the pigment is preferably made of aluminum. Moreover, in order to color the said pigment itself, you may use the pigment coat | covered with the dissimilar metal, and these alloys may be sufficient.

Here, the particle diameter of the pigment used in the present invention is arbitrary, and may be appropriately selected and determined according to the use of the resin composition containing the pigment, etc., from the viewpoint of developing a high metallic feeling. The volume average particle size of the pigment is preferably 20 μm or less, more preferably 15 μm or less.
Further, from the viewpoint of increasing the fluidity at the time of injection molding of the resin composition, the volume average particle diameter of the pigment is preferably 1 μm or more, and more preferably 3 μm or more.

In the present invention, the volume average particle size can be determined by measuring the particle size distribution using, for example, a laser diffraction particle size distribution measuring device, and obtaining the volume average particle size from the result. In addition, the volume average particle diameter can be obtained by a dynamic light scattering method, an image processing method using an SEM optical microscope, a sieving method, or the like. In the present invention, measuring the particle size distribution using a laser diffraction particle size distribution measuring device and obtaining the volume average particle size from the result is consistent with the preferred range of the volume average particle size described above. It is preferable.
Furthermore, the aspect ratio of the pigment used in the present invention is arbitrary, and may be appropriately selected and determined according to the use of the resin composition containing the pigment. In order to reduce the appearance, the aspect ratio is preferably 200 or less, more preferably 100 or less, and particularly preferably 50 or less.

In order to obtain a high metallic feel of the resin composition, the aspect ratio of the pigment is preferably 1 or more, more preferably 10 or more, and particularly preferably 15 or more.
In the present invention, the aspect ratio can be obtained, for example, by observing particles and performing image processing using a scanning electron microscope.
The average thickness of the pigment used in the present invention can be appropriately set depending on the desired powder particle shape and the like, but is preferably in the range of 0.1 μm to 1.5 μm. If the average thickness of the pigment is set within this range, it is possible to impart excellent luster and the like to the molded article with a smaller amount of particles. Further, from the viewpoint of increasing fluidity during injection molding, the average thickness of the pigment is more preferably 0.1 to 1.0 μm. The average thickness of the powder particles can be determined by observing the cross section of the injection molded body with a scanning electron microscope, measuring the thickness of an arbitrary number of particles, and calculating the average.

The shape of the pigment used in the present invention is not particularly limited, and a scaly shape, a spherical shape, an indefinite shape, and the like can be appropriately selected and used. From the viewpoint of expressing a high metallic feeling, the pigment is a scaly shape. Is preferred. The ratio of the volume average particle diameter to the average thickness of the pigment is preferably 1 to 100, and more preferably 5 to 50.
In the resin composition used in the present invention, the pigment is 0.01 to 50 parts by weight, preferably 0.1 to 10 parts by weight, based on 100 parts by weight of the polycarbonate resin. More preferably, it is 0.5 parts by weight or more and 1 part by weight or less. If the amount of the pigment is too small, it will be difficult to express the glitter when used as an automobile interior / exterior part, while if too large, the impact resistance may be deteriorated or the appearance may be problematic when used as an automobile interior / exterior part. There is. The amount of the pigment in the resin composition used in the present invention can be calculated from the amount of raw material blended during the production of the polycarbonate resin composition, and can also be measured by various conventionally known methods. For example, it can be measured by a method such as an ashing method.

[surface treatment]
In the present invention, it is desirable that the pigment is dispersed as uniformly as possible in the resin composition from the viewpoint of imparting glitter to the resin molded product and exhibiting high concealing properties. It is preferable that the surface treatment is performed with at least one compound selected from the group consisting of polyolefin, metal soap, silane coupling agent and titanate coupling agent.

  Examples of the wax as the surface treatment agent include plant waxes, mineral waxes, and synthetic waxes. Specifically, as the plant-based wax, rice wax, montanic acid wax, montanic acid ester wax, partially saponified wax and the like, mineral-based waxes include petroleum wax and the like, as synthetic waxes, Examples thereof include polyethylene wax, polypropylene wax, oxidized polyethylene wax, and amide wax.

  Examples of the modified polyolefin include maleic anhydride-modified propylene polymer and its chloride, maleic anhydride-modified ethylene-propylene copolymer and its chloride, maleic anhydride-modified propylene-butene copolymer and its chloride, anhydrous Maleic acid-modified ethylene-propylene-butene copolymer and its chloride, acrylic acid-modified propylene polymer and its chloride, acrylic acid-modified ethylene-propylene copolymer and its chloride, acrylic acid-modified propylene-butene copolymer Examples thereof include a coalescence and a chloride thereof.

Examples of the metal soap include barium laurate, calcium stearate, zinc stearate, magnesium stearate, aluminum stearate, zinc oleate, and 12-hydroxy magnesium stearate.
Examples of the silane coupling agent include γ- (2-aminoethyl) aminopropyltrimethoxysilane, γ- (2-aminoethyl) aminopropylmethyldimethoxysilane, γ-methacryloxypropyltrimethoxysilane, N-β- ( N-vinylbenzylaminoethyl) -γ-aminopropyltrimethoxysilane / hydrochloride, γ-glycidoxypropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, vinyltriacetoxysilane, γ-anilinopropyltrimethoxysilane Vinyltrimethoxysilane, octadecyldimethyl [3- (trimethoxysilyl) propyl] ammonium chloride, γ-ureidopropyltriethoxysilane and the like, and partial hydrolysis condensates of the above silane coupling agents can also be used.

  Examples of the titanate coupling agent include isopropyl tristearoyl titanate, isopropyl tris (dioctyl pyrophosphate) titanate, isopropyl tri (N-aminoethyl / aminoethyl) titanate, tetraoctyl bis (ditridecyl phosphate) titanate, tetra (2 -2-diallyloxymethyl-1-butyl) bis (ditridecyl) phosphate titanate, bis (dioctylpyrophosphate) oxyacetate titanate, bis (dioctylpyrophosphate) ethylene titanate and the like.

Among these, as the surface treating agent, synthetic wax, maleic anhydride-modified polyolefin, γ-mercaptopropyltrimethoxysilane, and γ-ureidopropyltriethoxysilane are preferable, and polyethylene wax is particularly preferable.
A surface treating agent may be used individually by 1 type, and may be used in combination of 2 or more type.
The surface treatment amount with the surface treatment agent may be appropriately set according to the desired glitter, etc., but the amount of the surface treatment agent used for the surface treatment is usually 0.5 parts by weight to 100 parts with respect to 100 parts by weight of the pigment. It is preferable to use parts by weight.

The surface treatment method of the pigment used in the present invention is not particularly limited, and can be obtained, for example, by directly mixing the pigment and the surface treatment agent using a known apparatus such as a mixer or a blender. At this time, mixing may be performed while appropriately heating as necessary. It is possible to adjust the volume average particle diameter of the pigment by milling simultaneously with the surface treatment. Furthermore, a solvent such as mineral spirit or toluene can be added and mixed, and it can be used in a wet state (paste) with these solvents.
[Master batch]
It is preferable that the pigment blended in the polycarbonate resin is masterbatched with a thermoplastic resin from the viewpoint of uniformly dispersing the pigment in the resin composition.

As the thermoplastic resin, it is preferable from the viewpoint of compatibility to select the polycarbonate resin used in the present invention.
In the present invention, the content of the pigment in the master batch is preferably 5% by weight to 90% by weight, and more preferably 40% by weight to 80% by weight. When the content of the pigment in the master batch is larger than the above range, in the step of producing the resin composition used in the present invention, the pigment tends to be difficult to uniformly disperse, and when less, in the resin composition, A large amount of thermoplastic resin derived from the master batch may be mixed, and physical properties such as surface hardness and heat resistance of the resin composition may be reduced.

From the viewpoint of uniformly dispersing the pigment in the masterbatch, it is particularly preferable that the pigment is surface-treated by the above-described method.
The weight ratio of the thermoplastic resin and the pigment surface treatment agent in the masterbatch is preferably set to 10: 1 to 5: 1.
Various additives can be blended in the master batch simultaneously with the pigment. For example, the colorant is preferably added to the masterbatch from the viewpoint of suppressing color unevenness and weld lines in automobile interior and exterior parts.

  As a method for masterbatch of the pigment, a known method may be used. For example, the pigment, the surface treatment agent, the thermoplastic resin and necessary additives are supplied to a twin-screw extruder and heated. There are methods such as kneading while extruding, extruding in a molten state from an extruder, cutting with a pelletizer after cooling, and forming into pellets. When the pigment is in the form of a paste containing a solvent, a master batch can be formed by providing a vent port in the extruder and degassing and removing the volatile solvent.

<Hindered amine light stabilizer>
The molecular weight of the hindered amine light stabilizer used in the present invention is preferably 1000 or less, and more preferably 900 or less. When the molecular weight exceeds 1000, there is a possibility that sufficient weather resistance may not be obtained when an automobile interior / exterior part is formed. The molecular weight is preferably 300 or more, more preferably 400 or more.

  When the molecular weight is less than 300, the heat resistance is poor, the mold is contaminated when molding the interior / exterior part of the automobile, and a molded article having an excellent surface appearance may not be obtained. The hindered amine light stabilizer used in the present invention is preferably a compound having a piperidine structure. The piperidine structure defined here may be a saturated 6-membered amine structure, and includes a structure in which a part of the piperidine structure is substituted with a substituent. Examples of the substituent include an alkyl group having 4 or less carbon atoms, and a methyl group is particularly preferable.

In particular, a compound having a plurality of piperidine structures is preferable, and a compound in which the plurality of piperidine structures are linked by an ester structure is preferable.
Examples of the hindered amine light stabilizer used in the present invention include 4-piperidinol, 2,2,6,6-tetramethyl-4-benzoate, bis (2,2,6,6-tetramethyl-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, tetrakis (2,2,6,6-tetramethylpiperidine-4-carboxylic acid) 1,2,3,4-butanetetrayl, A condensate of 2,2,6,6-tetramethyl-pyridinol, tridecyl alcohol and 1,2,3,4-butanetetracarboxylic acid, 1,2,2,6,6-pentamethyl-4-piperidyl, and Tridecyl alcohol and tridecyl-1,2,3,4-butanetetracarboxylate, bis (1,2,3,6,6-pentamethyl-4-piperidyl) [[3,5-bi (1,1-dimethylethyl) -4-hydroxyphenyl] methyl] butyl malonate, decane diacid bis (2,2,26,6- tetramethyl-1 (
Octyloxy) -4-piperidinyl) ester, reaction product of 1,1-dimethylethyl hydroperoxide and octane, 1- [2- [3- (3,5-di-tert-butyl-4-
Hydroxyphenyl) propionyloxy] ethyl] -4- [3- (3,5-di-tert
-Butyl-4--4-hydroxyphenyl) propionyloxy] ethyl] -2,2,6,6-tetramethylpiperidine, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) 1,2, 3,4-butanetetracarboxylate, poly [{6- (1,1,3,
3-tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl} {(2,2
, 6,6-tetramethyl-4-piperidyl) imino} hexamethylene {(2,2,6,6-tetramethyl-4-piperidyl) imino}], N, N′-bis (2,2,6, 6-tetramethyl-4-piperidyl) -1,6-hexanediamine polymer and 2,4,6-trichloro-1,3,5-triazine, 1,2,3,4-butanetetracarboxylic acid and 2,2 , 6,6-tetramethyl-4-piperidinol and β, β, β, β-tetramethyl-3,9- (2,
Condensate with 4,8,10-tetraoxaspiro [5,5] undecane-diethanol, N, N′-bis (3-aminopropyl) ethylenediamine-2,4-bis [N-butyl-N- ( 1,2,2,6,6-pentamethyl-4-piperidyl) amino] -6-chloro-1,3,5-triazine condensate, dimethyl-1- (2-hydroxyethyl) -4-hydroxy-succinate Examples include 2,2,6,6-tetramethylpiperidine polycondensate.

  The amount of hindered amine light stabilizer used in the present invention is 0.001 part by weight or more and 5 parts by weight or less, more preferably 0.005 part by weight or more and 3 parts by weight or less with respect to 100 parts by weight of the polycarbonate resin. The amount is particularly preferably 0.01 parts by weight or more and 1 part by weight or less. If the amount of the hindered amine light stabilizer added is more than 5 parts by weight, it tends to be colored, and even if a colorant is added, it is difficult to obtain a jet black with depth and clarity. When the added amount is less than 0.001 part by weight, there is a possibility that sufficient weather resistance may not be obtained when an automobile interior / exterior part is formed.

<Resin composition>
The resin composition used in the present invention contains at least the polycarbonate resin, the pigment, and the hindered amine light stabilizer.
It is preferable that the resin composition used in the present invention contains a colorant. Examples of the colorant include organic dyes such as inorganic pigments, organic pigments, and organic dyes.

Specific examples of the inorganic pigment include carbon black; oxidation of titanium oxide, zinc white, petal, chromium oxide, iron black, titanium yellow, zinc-iron brown, copper-chromium black, copper-iron black, etc. Physical pigments and the like.
Specific examples of organic dyes such as organic pigments and organic dyes include phthalocyanine dyes and pigments; condensation of azo, thioindigo, perinone, perylene, quinacridone, dioxazine, inindolinone, quinophthalone, etc. And polycyclic dyes such as anthraquinone, perinone, perylene, methine, quinoline, heterocyclic, and methyl dyes.

These colorants may be used alone or in combination of two or more.
Among organic dyes such as the inorganic pigment, organic pigment and organic dye, inorganic pigments are preferable. By using an inorganic pigment as a colorant, jet blackness or the like can be maintained for a long time even when used outdoors as an automobile interior / exterior part.
The amount of the colorant used in the present invention is 0.00001 parts by weight or more and 3 parts by weight or less with respect to 100 parts by weight of the polycarbonate resin. Preferably they are 0.0001 weight part or more and 2 weight parts or less, More preferably, they are 0.0005 weight part or more and 1 weight part or less. If the amount of the colorant is less than 0.00001 parts by weight, it is difficult to obtain a jet black with a depth and clarity. When the amount is more than 3 parts by weight, the surface roughness of the interior / exterior parts of the automobile becomes large, and it is difficult to obtain a jet black with depth and clarity.

The resin composition used in the present invention may contain an antioxidant. Various antioxidants commonly used in resins can be used as antioxidants, but from the viewpoint of oxidation stability, thermal stability, jet blackness, etc., phosphite antioxidants, sulfur antioxidants, And phenolic antioxidants are preferred.
Here, the addition amount of the antioxidant is usually 0.001 part by weight or more, preferably 0.002 part by weight or more, more preferably 0.005 part by weight or more, based on 100 parts by weight of the polycarbonate resin. The amount is not more than parts by weight, preferably not more than 3 parts by weight, more preferably not more than 2 parts by weight.

When the addition amount is more than 5 parts by weight, the mold may be contaminated during molding, and a molded product having an excellent surface appearance may not be obtained. When the amount is less than 0.001 part by weight, there is a tendency that a sufficient improvement effect for the weather resistance test cannot be obtained.
(Phosphite antioxidant)
Phosphite antioxidants include triphenyl phosphite, tris (nonylphenyl) phosphite, tris (2,4-di-tert-butylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl Phosphite, didecyl monophenyl phosphite, dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, bis (2,6-di-tert- Butyl-4-methylphenyl) pentaerythritol diphosphite, 2,2-methylenebis (4,6-di-tert-butylphenyl) octyl phosphite, bis (nonylphenyl) pentaerythritol Diphosphite, bis (2,4-di -tert- butylphenyl) pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, and the like.

  Among these, trisnonylphenyl phosphite, trimethyl phosphite, tris (2,4-di-tert-butylphenyl) phosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite is preferably used. These compounds can be used alone or in combination of two or more.

(Sulfur-based antioxidant)
Examples of the sulfur-based antioxidant include dilauryl-3,3′-thiodipropionate, ditridecyl-3,3′-thiodipropionate, dimyristyl-3,3′-thiodipropionate, diester Stearyl-3,3′-thiodipropionate, laurylstearyl-3,3′-thiodipropionate, pentaerythritol tetrakis (3-laurylthiopropionate), bis [2-methyl-4- (3 -Laurylthiopropionyloxy) -5-tert-butylphenyl] sulfide, octadecyl disulfide, mercaptobenzimidazole, 2-mercapto-6-methylbenzimidazole, 1,1′-thiobis (2-naphthol) and the like. . Among the above, pentaerythritol tetrakis (3-lauryl thiopropionate) is preferable.

(Phenolic antioxidant)
Examples of the phenolic antioxidant include pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-laurylthiopropionate), glycerol-3-stearylthiopropionate, triethylene glycol-bis [ 3- (3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate], 1,6-hexanediol-bis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] , Pentaerythritol-tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1 , 3,5-trimethyl-2 4,6-tris (3,5-di-tert-bull-4-hydroxybenzyl) benzene, N, N-hexamethylenebis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide), 3,5-di-tert-butyl-4-hydroxy-benzylphosphonate-diethyl ester, tris (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 4,4′-biphenylenediphosphinic acid tetrakis ( 2,4-di-tert-butylphenyl), 3,9-bis {1,1-dimethyl-2- [β- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy] ethyl} -2,4,8,10-tetraoxaspiro (5,5) undecane, 2,6-di-tert-butyl-p-cresol, 2 Compounds such as 6-di -tert- butyl-4-ethyl phenol.

  Among these compounds, an aromatic monohydroxy compound substituted with one or more alkyl groups having 5 or more carbon atoms is preferable. Specifically, octadecyl-3- (3,5-di-tert-butyl-4- Hydroxyphenyl) propionate, pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate}, 1,6-hexanediol-bis [3- (3,5-di- tert-butyl-4-hydroxyphenyl) propionate], 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene and the like, preferably pentaerythris Lithyl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate is more preferred.

<Other additives>
Furthermore, a neutralizing agent, an ultraviolet absorber, a release agent, an antistatic agent, a lubricant, a lubricant, a plasticizer, a compatibilizing agent, a flame retardant, and the like can be added as long as the designability can be maintained.
In addition, glass fiber, glass milled fiber, glass flake, glass beads, silica, alumina, titanium oxide, calcium sulfate powder, gypsum, gypsum whisker, barium sulfate, talc, mica, wollastonite as long as designability can be maintained Calcium silicate such as carbon black, graphite, iron powder, copper powder, molybdenum disulfide, silicon carbide, silicon carbide fiber, silicon nitride, silicon nitride fiber, brass fiber, stainless steel fiber, potassium titanate fiber, whisker, etc. Filler organic fillers such as wood powder, bamboo powder, palm starch, cork powder, pulp powder; balun-like or spherical organic fillers such as cross-linked polyester, polystyrene, styrene / acrylic copolymer, urea resin; carbon It is also possible to add fibrous organic fillers such as fibers, synthetic fibers and natural fibers Kill.

  In the present embodiment, the mixing timing and mixing method of the colorant, hindered amine light stabilizer, hindered phenol antioxidant, and the like to be blended with the polycarbonate resin are not particularly limited. As the mixing time, for example, when the polycarbonate resin is produced by the transesterification method, at the end of the polymerization reaction; and regardless of the polymerization method, the polycarbonate resin in the middle of kneading the polycarbonate resin and other compounding agents is melted A case where it is blended and kneaded with a polycarbonate resin in a solid state such as pellets or powder using an extruder or the like. As a mixing method, a method of directly mixing or kneading the acid value inhibitor with a polycarbonate resin; as a high-concentration masterbatch prepared using a small amount of a polycarbonate resin or other resin and the colorant or antioxidant It can also be mixed.

<Automobile interior / exterior parts>
Examples of automotive interior and exterior parts of the present invention include fenders, bumpers, facers, door panels, side garnishes, pillars, radiator grills, side protectors, side moldings, rear protectors, rear moldings, various spoilers, bonnets, roof panels, trunk lids, Automobile parts such as detachable tops, wind reflectors, mirror housings, outer door handles, etc., instrument panels, center console panels, meter parts, various switches, car navigation parts, car audio visual parts, auto mobile computer parts, etc. Interior parts.

  The molding method for the interior / exterior part of the automobile according to the present invention is preferably injection molding, injection compression, or injection press molding, although it depends on the shape and dimensions of the part. The runner can use not only a normal cold runner method but also a hot runner method. Also, insert molding, in-mold coating molding, two-color molding, sandwich molding, and the like are possible. Furthermore, in order to obtain a design property, it is also possible to use heat insulating mold forming and rapid heating / cooling mold forming.

EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited by a following example, unless the summary is exceeded.
In the following, physical properties or characteristics of resin molded products were evaluated by the following methods.
(1) Measurement of total light transmittance The resin composition was formed into a molded plate having a width of 90 mm, a length of 50 mm and a thickness of 3 mm using an injection molding machine (EC-75SX manufactured by Toshiba Machine Co., Ltd.). About this molded board, based on JISK7105, the haze meter (Nippon Denshoku Industries Co., Ltd. product: NDH2000) was used, and the total light transmittance was measured with D65 light source. The smaller the total light transmittance, the better the light shielding property.

(2) Light resistance test The resin composition was formed into a molded plate having a width of 90 mm, a length of 50 mm and a thickness of 3 mm using an injection molding machine (EC-75SX manufactured by Toshiba Machine Co., Ltd.). For the molded plate, L ₀ ^* , a ₀ ^* , b ₀ ^* values were measured by a C light source reflection method using a spectral color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd .: SE2000) in accordance with JIS K 7105. did. Next, manufactured by Suga Test Instruments Co., Ltd .: using a metering weather meter M6T, a horizontal metering lamp as the light source, quartz as the inner filter, and the surroundings of the lamp under conditions of 63 ° C. and 50% relative humidity A filter of # 500 was attached as an outer filter, the irradiance was set to 1.5 kw / m ² at a wavelength of 300 nm to 400 nm, and the irradiation was performed for 100 hours on the square surface of the molded plate. The L ^* , a ^* , and b ^* values after irradiation are measured in the same manner as the L ₀ ^* , a ₀ ^* , and b ₀ ^* values (initial), and ΔL ^* , Δa ^* , Δb ^* , and color difference ΔE _ab ^* are obtained. It was. It means that it is excellent in light resistance, so that the value of (DELTA) _Eab ^* is small.

Δb ^* = | b ^* −b ₀ ^* |
ΔE _ab ^* = [(ΔL ^* ) ² + (Δa ^* ) ² + (Δb ^* ) ² ]
(3) Heat resistance (deflection temperature under load)
A dumbbell test piece for tensile test was molded from the resin composition using an injection molding machine (EC-75SX, manufactured by Toshiba Machine Co., Ltd.). The dumbbell-shaped test piece was cut to obtain a load deflection temperature measurement test piece. Using the test specimen for measuring the deflection temperature under load, the deflection temperature under load was measured according to ISO 75. The load is 1.80 MPa. For automotive interior / exterior parts, the deflection temperature under load is required to be at least 80 ° C., more preferably 90 ° C. or more.

(4) Surface impact test The resin composition was made into a sheet of 100 mm x 100 mm x 2 mm using an injection molding machine (EC-75SX manufactured by Toshiba Machine Co., Ltd.). According to ISO 6603-2, the impact energy was measured and the fracture mode was observed at a test temperature of 23 ° C. and −20 ° C. using a high-speed puncture impact tester (manufactured by Shimadzu Corporation: Hydroshot HITS-P10). did. The test speed was 4.4 m / s, the diameter of the punch striker was Φ20 mm, the tip shape was hemispherical, the load cell capacity was 10 kN, and the hole diameter of the holding jig was Φ40 mm.

(5) Surface hardness The resin composition was made into a sheet of 100 mm × 100 mm × 2 mmt by an injection molding machine (EC-75SX manufactured by Toshiba Machine Co., Ltd.). The surface hardness of the sheet was measured under the following conditions using a surface measuring instrument (manufactured by Shinto Kagaku Co., Ltd .: Tripogear Type 14DR) in accordance with JIS K 5600.
Load 750g
Measurement speed 30mm / min
Measuring distance 7mm
Mitsubishi pencil UNI was used as the pencil.
As the pencil hardness, 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B were used.
The measurement was made 5 times, and the softness of the pencil hardness that was scratched twice or more was defined as the pencil hardness of the measurement substance.

(6) Volume average particle diameter and aspect ratio of pigment Since the pigment used here was a pigment masterbatch containing 30% low-density polyethylene, the pigment masterbatch was placed in an electric furnace and kept at room temperature with argon gas for 30 minutes. Replaced. Thereafter, the mixture was heated at 400 ° C. for 10 minutes, and further heated at 500 ° C. for 30 minutes to remove the resin component, and then the door was opened and allowed to cool to room temperature.

Using the obtained pigment component as water as a dispersion medium and a neutral surfactant as a dispersant, ultrasonic irradiation was performed for 5 minutes to obtain a dispersion. Laser dispersion particle size distribution measuring device (manufactured by Nikkiso Co., Ltd., model: MT3300EX)
II).
For the aspect ratio, the pigment master batch was subjected to hot press molding at a molding temperature of 200 ° C. using a spacer having a thickness of 1 mm. The obtained press piece is cut with a u-microtome (Leica, Ultra Cut UCT), and subjected to conductive treatment with ion etching treatment (EIKO, IB-3) and Os coater (Nihon Laser Electronics). And using a scanning electron microscope (manufactured by JEOL Ltd., JSM-7104F), performing image processing on 100 to 1000 pigments, obtaining an average value (average thickness) of pigment thickness, A value obtained by dividing the average particle diameter value by the average thickness was defined as an aspect ratio.

Moreover, the symbol of the compound used by the following example and the comparative example is as follows.
<Polycarbonate resin raw material>
ISB: Isosorbide (Rocket Fleure, trade name POLYSORB PS)
CHDM: 1,4-cyclohexanedimethanol (Eastman)
DPC: Diphenyl carbonate (Mitsubishi Chemical Corporation)
<Polycarbonate resin>
M7022J: Polycarbonate resin (Mitsubishi Chemical Corporation, Novalex M7022J)
<Antioxidant>
AO-1: Phosphite antioxidant (Tris (2,4-di-tert-butylphenyl) phosphite, manufactured by ADEKA, ADK STAB 2112)
AO-2: Phenolic antioxidant (pentaerythritol-tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], manufactured by ADEKA, ADK STAB AO-60)
<Release agent>
S-100A: stearic acid monoglyceride (manufactured by Riken Vitamin Co., Ltd., S-100A)
<Pigment>
NME005N1: 70% aluminum pigment containing master batch (Made by Toyo Aluminum Co., Ltd., METAX NEO NME005N1, volume average particle size of aluminum pigment: 7.4 μm (measured value in (6)), 5 μm (catalog value), aluminum pigment Thickness: 0.33 μm, aspect ratio: 22.4)
NME070N6: master batch containing 70% aluminum pigment (manufactured by Toyo Aluminum Co., Ltd., METAX NEO NME070N6, volume average particle size of aluminum pigment: 95 μm (measured value in (6)), 70 μm (catalog value), thickness of aluminum pigment : 0.45 μm, aspect ratio: 211.1)
[Production Example 1]
In a polymerization reactor equipped with a stirring blade and a reflux condenser controlled at 100 ° C., ISB and CHDM, DPC and calcium acetate monohydrate having a chloride ion concentration of 10 weight ppb or less by distillation purification, The mixture was charged so that the ratio was ISB / CHDM / DPC / calcium acetate monohydrate = 0.60 / 0.40 / 1.00 / 1.3 × 10 ⁻⁶ , and the atmosphere was sufficiently substituted with nitrogen (oxygen concentration 0. 0005 to 0.001 vol%). Subsequently, heating was performed with a heating medium, and stirring was started when the internal temperature reached 100 ° C., and the contents were melted and made uniform while controlling the internal temperature to be 100 ° C. After that, temperature increase was started, the internal temperature was adjusted to 210 ° C. in 40 minutes, and when the internal temperature reached 210 ° C., control was performed to maintain this temperature, and at the same time, pressure reduction was started, After 90 minutes, the pressure was changed to 13.3 kPa (absolute pressure, the same applies hereinafter), and the pressure was maintained for another 60 minutes. The phenol vapor produced as a by-product with the polymerization reaction is led to a reflux condenser using a steam controlled at 100 ° C. as the inlet temperature to the reflux condenser, and a monomer component contained in the phenol vapor in a slight amount is introduced into the polymerization reactor. Then, the phenol vapor that did not condense was recovered by guiding it to a condenser using 45 ° C. warm water as a refrigerant.

  The contents thus oligomerized are once restored to atmospheric pressure, and then transferred to another polymerization reaction apparatus equipped with a stirring blade and a reflux condenser controlled in the same manner as described above. The internal temperature was set to 220 ° C. and the pressure was set to 200 Pa in 60 minutes. Thereafter, the internal temperature was set to 230 ° C. over 20 minutes, the pressure was 133 Pa or less, the pressure was restored when the predetermined stirring power was reached, the contents were extracted in the form of strands, and pelletized with a rotary cutter.

[Example 1]
Polycarbonate resin pellets obtained in Production Example 1, and Tinuvin 770DF (manufactured by BASF Japan) as a hindered amine light stabilizer so as to have the composition shown in Table 1, S-100A as a mold release agent, antioxidant AO-1 (ADK STAB 2112) and AO-2 (ADK STAB AO-60) as a pigment and NME005N1 as a pigment using a twin screw extruder (TEX30HSS-32) manufactured by Nippon Steel Works The resin was extruded in a strand shape so that the resin temperature was 250 ° C., cooled and solidified with water, and then pelletized with a rotary cutter. At this time, the vent port was connected to a vacuum pump, and the pressure at the vent port was controlled to be 500 Pa. The obtained pellets of the resin composition were dried at 90 ° C. for 6 hours using a hot air dryer. Next, the dried pellets of the resin composition are supplied to an injection molding machine (EC-75SX type manufactured by Toshiba Machine Co., Ltd.). The resin temperature is 240 ° C., the mold temperature is 60 ° C., and the molding cycle is 40 seconds. A 100 mm × 2 mmt sheet and a 90 mm × 50 mm × 3 mmt sheet were formed. In addition, a dumbbell test piece for tensile test was molded. Thereafter, a test piece for measuring a deflection temperature under load was obtained by cutting from a dumbbell type test piece. The measurement results are shown in Table 1.

[Comparative Example 1]
Polycarbonate resin M7022J, and Tinuvin 770DF (manufactured by BASF Japan) as a hindered amine light stabilizer so as to have the composition shown in Table 1, S-100A as a release agent, and AO-1 (ADK STAB 2112 as an antioxidant) ) And AO-2 (Adeka Stub AO-60) and NME070N6 as a pigment, a Nippon Steel Works twin screw extruder (TEX30HSS-32) having two vent ports, the resin temperature at the outlet becomes 280 ° C. After extruding into a strand shape and cooling and solidifying with water, it was pelletized with a rotary cutter. At this time, the vent port was connected to a vacuum pump, and the pressure at the vent port was controlled to be 500 Pa. The pellets of the obtained resin composition were dried at 120 ° C. for 6 hours using a hot air dryer. Next, the pellets of the dried resin composition are supplied to an injection molding machine (EC-75SX type manufactured by Toshiba Machine Co., Ltd.), and the resin temperature is 280 ° C., the mold temperature is 80 ° C., and the molding cycle is 40 seconds. A 100 mm × 2 mmt sheet and a 90 mm × 50 mm × 3 mmt sheet were formed. In addition, a dumbbell test piece for tensile test was molded. Thereafter, a test piece for measuring a deflection temperature under load was obtained by cutting from a dumbbell type test piece. The measurement results are shown in Table 1.

The interior / exterior parts for automobiles of the present invention have design properties (deep coloring, sharpness, lustrous texture, etc.), retain a high-class feeling and profound feeling, and have excellent heat resistance, weather resistance and impact resistance. Therefore, it can be applied to automobile exterior parts such as side garnishes and radiator grills, and automobile interior parts such as instrument panels and center console panels.

Claims (11)

Selected from the group consisting of a polycarbonate resin containing a structural unit derived from a dihydroxy compound represented by the following general formula (1) and a structural unit derived from cyclohexanedimethanol, and aluminum, gold, silver, copper, nickel, titanium and stainless steel An automotive interior / exterior component comprising a resin composition comprising at least one metal pigment and a hindered amine light stabilizer,
The pigment in the resin composition is 0.01 to 50 parts by weight with respect to 100 parts by weight of the polycarbonate resin, and the hindered amine light stabilizer is 0.001 to 5 parts by weight. Car interior and exterior parts.
  In the polycarbonate resin, the structural unit derived from the dihydroxy compound represented by the general formula (1) is 50 mol% to 70 mol%, and the structural unit derived from the cyclohexanedimethanol is 30 mol% to 50 mol%. The interior / exterior part of an automobile according to claim 1, wherein: The molar ratio of the structural unit derived from the dihydroxy compound represented by the general formula (1) and the structural unit derived from cyclohexanedimethanol in the polycarbonate resin is 50/50 to 70/30. Item 3. An automotive interior / exterior part according to Item 1 or 2.   The automobile interior / exterior component according to any one of claims 1 to 3, wherein the pigment has a volume average particle size of 20 µm or less.   The automotive interior / exterior component according to any one of claims 1 to 4, wherein an average thickness of the pigment is 0.1 µm to 1.5 µm.   The automobile interior / exterior component according to any one of claims 1 to 5, wherein a ratio of a volume average particle diameter to an average thickness of the pigment is 1 to 100.   7. The pigment is surface-treated with at least one compound selected from the group consisting of wax, modified polyolefin, metal soap, silane coupling agent and titanate coupling agent. The interior / exterior parts for automobiles according to any one of the above.   The automotive interior / exterior component according to any one of claims 1 to 7, wherein the pigment is a pigment made of aluminum.   The interior of an automobile according to any one of claims 1 to 8, wherein the resin composition contains 0.00001 part by weight or more and 3 parts by weight or less of a colorant with respect to 100 parts by weight of the polycarbonate resin. Exterior parts.   The automotive interior / exterior part according to any one of claims 1 to 9, wherein the hindered amine light stabilizer has a molecular weight of 1000 or less.   The automotive interior / exterior component according to any one of claims 1 to 10, wherein the automotive interior / exterior component is formed by injection molding or injection compression molding the resin composition.