WO2014175450A1 - ポリブチレンテレフタレート樹脂組成物 - Google Patents
ポリブチレンテレフタレート樹脂組成物 Download PDFInfo
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- WO2014175450A1 WO2014175450A1 PCT/JP2014/061789 JP2014061789W WO2014175450A1 WO 2014175450 A1 WO2014175450 A1 WO 2014175450A1 JP 2014061789 W JP2014061789 W JP 2014061789W WO 2014175450 A1 WO2014175450 A1 WO 2014175450A1
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- WIPO (PCT)
- Prior art keywords
- pigment
- resin composition
- polybutylene terephthalate
- organic pigment
- terephthalate resin
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D17/00—Pigment pastes, e.g. for mixing in paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/006—Preparation of organic pigments
- C09B67/0061—Preparation of organic pigments by grinding a dyed resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Definitions
- the present invention relates to a polybutylene terephthalate resin composition.
- Electrical equipment parts, electronic parts, etc. (hereinafter also referred to as “electrical / electronic parts etc.”), among them, particularly power supply parts are required to have high tracking resistance for their purposes. Therefore, techniques for imparting high tracking resistance to resin compositions used as materials for electric / electronic parts and the like have been studied so far.
- Polybutylene terephthalate resin is known as a material having high tracking resistance. Therefore, polybutylene terephthalate resin has been conventionally blended in resin compositions constituting electric / electronic parts and the like. On the other hand, electrical / electronic components and the like may be required to have a black appearance. In such a case, carbon black or the like as a black pigment has been blended in the resin composition together with the polybutylene terephthalate resin.
- Patent Documents 1 to 3 describe black and dark polybutylene terephthalate resin compositions that do not use carbon black.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a non-halogen polybutylene terephthalate resin composition that exhibits black color and has excellent tracking resistance.
- the present invention provides the following.
- polybutylene terephthalate resin A polybutylene terephthalate resin composition containing a colorant, The colorant includes [1] a blue organic pigment a, a yellow organic pigment b, and a red organic pigment c, or [2] a combination of a blue organic pigment a and an orange organic pigment d, None of the organic pigments a to d contains a halogen atom in the molecular structure,
- the L * value in the L * a * b * color system measured for the molded product obtained from the polybutylene terephthalate resin composition according to JIS Z8729: 2004 is 25 or less
- the blue organic pigment a is at least one selected from the group consisting of Pigment Blue 15: 3 and Pigment Blue 16.
- the yellow organic pigment b is at least one selected from the group consisting of Pigment Yellow 147, Pigment Yellow 150, Pigment Yellow 180, and Pigment Yellow 181.
- the red organic pigment c is at least one selected from the group consisting of Pigment Red122, Pigment Red149, Pigment Red175, Pigment Red208, Pigment Red247, and Pigment Red255.
- the orange organic pigment d is a polybutylene terephthalate resin composition according to (1) or (2), which is at least one selected from the group consisting of Pigment Orange 43, Pigment Orange 68, and Pigment Orange 73.
- polybutylene terephthalate resin composition according to any one of (1) to (3), further comprising a phosphorus-based flame retardant, or a phosphorus-based flame retardant and a nitrogen-based flame retardant aid.
- non-halogen polybutylene terephthalate resin composition that exhibits black color and has excellent tracking resistance.
- the polybutylene terephthalate resin composition of the present invention includes at least a polybutylene terephthalate resin and a colorant containing a predetermined organic pigment.
- resin composition includes at least a polybutylene terephthalate resin and a colorant containing a predetermined organic pigment.
- the polybutylene terephthalate resin (hereinafter also referred to as “PBT resin”) in the present invention is a dicarboxylic acid component containing at least terephthalic acid or an ester-forming derivative thereof (such as a lower alcohol ester) and an alkylene glycol having at least 4 carbon atoms (1 , 4-butanediol) or a polybutylene terephthalate resin obtained by polycondensation with a glycol component containing an ester-forming derivative thereof.
- the PBT resin is not limited to a homo PBT resin, but may be a copolymer (copolymerized PBT resin) containing 60 mol% or more (particularly about 75 to 95 mol%) of a butylene terephthalate unit. PBT resin can be used individually by 1 type or in combination of 2 or more types.
- dicarboxylic acid components other than terephthalic acid and its ester-forming derivatives
- aromatic dicarboxylic acid components isophthalic acid, phthalic acid, naphthalenedicarboxylic acid, diphenyl ether dicarboxylic acid, etc. 6 to C 12 aryl dicarboxylic acids
- aliphatic dicarboxylic acid components C 4 to C 16 alkyl dicarboxylic acids such as succinic acid, adipic acid, azelaic acid, sebacic acid, and C 5 to C 10 cycloalkyl such as cyclohexane dicarboxylic acid
- dicarboxylic acid components can be used singly or in combination of two or more.
- Preferred dicarboxylic acid components include aromatic dicarboxylic acid components (especially C 6 -C 10 aryl dicarboxylic acids such as isophthalic acid), aliphatic dicarboxylic acid components (especially C such as adipic acid, azelaic acid, sebacic acid, etc.) 6 ⁇ C 12 alkyl dicarboxylic acid).
- glycol components (comonomer components) other than 1,4-butanediol include, for example, aliphatic diol components [for example, alkylene glycol (ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butylene, etc.).
- glycol hexamethylene glycol, neopentyl glycol, C 2 ⁇ C 10 alkylene glycols such as 1,3-octanediol, diethylene glycol, triethylene glycol, polyoxy C 2 ⁇ C 4 alkylene glycol such as dipropylene glycol, etc.), cyclohexane dimethanol
- Alicyclic diols such as methanol and hydrogenated bisphenol A
- aromatic diol components aromatic alcohols such as bisphenol A and 4,4-dihydroxybiphenyl, C of bisphenol A 2 to C 4 alkylene oxide adducts (eg, ethylene oxide 2 mol adduct of bisphenol A, propylene oxide 3 mol adduct of bisphenol A, etc.), or ester-forming derivatives thereof.
- glycol component includes an aliphatic diol component (in particular, C 2 ⁇ C 6 alkylene glycol, polyoxy C 2 ⁇ C 3 alkylene glycol such as diethylene glycol, cyclohexane alicyclic diols dimethanol, etc.) .
- aliphatic diol component in particular, C 2 ⁇ C 6 alkylene glycol, polyoxy C 2 ⁇ C 3 alkylene glycol such as diethylene glycol, cyclohexane alicyclic diols dimethanol, etc.
- any of the homo PBT resin or copolymer PBT resin produced by polycondensation using the above compound as a monomer component can be used as the PBT resin in the present invention.
- the homo PBT resin and the copolymerized PBT resin can be used singly or in combination of two or more. Further, the combined use of an unmodified PBT resin (homo PBT resin) and a copolymerized PBT resin is also useful.
- As the PBT resin a thermoplastic branched PBT resin belonging to the category of the copolymerized PBT resin can also be used.
- Polyfunctional compounds include aromatic polycarboxylic acid components (trimesic acid, trimellitic acid, pyromellitic acid and alcohol esters thereof), polyol components (glycerin, trimethylolethane, trimethylolpropane, pentaerythritol, etc.) Can be illustrated.
- the ratio of the PBT resin in the resin composition of the present invention is not particularly limited as long as the function of the PBT resin as the base resin is not inhibited.
- the colorant in the present invention includes a predetermined combination of organic pigments. Specifically, the colorant in the present invention includes (1) a blue organic pigment a, a yellow organic pigment b, and a red organic pigment c, or (2) a blue organic pigment a and an orange organic pigment d. At least a combination is included.
- blue organic pigment a “yellow organic pigment b” and the like are also simply referred to as “organic pigment a” and “organic pigment b”.
- black means a molded product obtained from the resin composition of the present invention (for example, a flat plate (80 mm ⁇ 80 mm) obtained by injection molding at a cylinder temperature of 250 ° C. and a mold temperature of 80 ° C. ⁇ 3 mm)), the L * value (lightness) in the L * a * b * color system measured in accordance with JIS Z8729: 2004 is 25 or less (preferably 20 or less, more preferably 15 or less, particularly preferably 10 or less).
- the colorant in the present invention taking advantage of the heat resistance of the polybutylene terephthalate resin, considering the case where the resin composition of the present invention is applied to a part used in a high temperature environment, an excellent heat resistance is used. It is preferable to use it.
- the colorant in the present invention specifically, those having a heat resistance of 260 ° C. or more required in accordance with DIN EN 12877 are preferable.
- Organic pigment a to organic pigment d may be any of organic pigment a to organic pigment d defined below.
- the name of the colorant in the present invention is based on a color index (Color Index International).
- the blue organic pigment a may be one or more selected from the group consisting of Pigment Blue 15: 3 and Pigment Blue 16.
- the yellow organic pigment b may be one or more selected from the group consisting of Pigment Yellow 147, Pigment Yellow 150, Pigment Yellow 180, and Pigment Yellow 181.
- the red organic pigment c may be one or more selected from the group consisting of Pigment Red122, Pigment Red149, Pigment Red175, Pigment Red208, Pigment Red247, and Pigment Red255.
- the orange organic pigment d may be one or more selected from the group consisting of Pigment Orange 43, Pigment Orange 68, and Pigment Orange 73.
- the above organic pigments a to d are all excellent in heat resistance, and the heat resistance defined in DIN EN 12877 is 260 ° C. or higher.
- any of the organic pigments a to d described above does not contain a halogen atom in the molecular structure.
- the blending ratio of each colorant can be adjusted as appropriate so that the hue of the resulting resin composition becomes a desired black color.
- the combination of the colorants is “organic pigment a, organic pigment b, and organic pigment c”
- the organic pigment a / organic pigment b / organic pigment c 10 to 80/10 to 80/10 to 80 by mass ratio. (Mass% in total of organic pigments a to c) may be used.
- the combination of the colorants is “organic pigment a and organic pigment d”
- the organic pigment a / organic pigment d 10/90 to 90/10 (mass% in the total of organic pigments a and b) by mass ratio. May be.
- organic pigment a organic pigment b, organic pigment c, and organic pigment d
- organic pigment a / organic pigment b / organic pigment c / organic pigment d 10 to 70/10 by mass ratio.
- 70 to 70/10 to 70 (mass% in total of organic pigments a to d) may be used.
- organic pigment a to organic pigment d those having no halogen atom in the molecular structure are used. Therefore, since the colorant containing the organic pigment which does not contain a halogen atom in the molecular structure is blended in the resin composition of the present invention, it is easy to meet the demand for non-halogenation.
- the colorant in the present invention includes pigments (inorganic pigments, mineral pigments, etc.) and dyes (plant pigments, fluorescent agents, etc.) other than the organic pigments a to d, as long as the object of the present invention is not impaired. It may be. For example, it is not excluded that a small amount of a black pigment (carbon black or the like) that is an inorganic pigment conventionally used for obtaining a black composition is contained in the colorant in the present invention. However, when the above organic pigment a to organic pigment d and carbon black are used in combination as the colorant in the present invention, the blending amount of carbon black is very small (for example, 0.05 parts per 100 parts by mass of PBT resin).
- the tracking resistance of the polybutylene terephthalate resin is not more than part by mass, preferably not more than 0.03 parts by mass, more preferably not more than 0.02 parts by mass, and still more preferably 0.01 parts by mass or less. It is preferable in that the light-shielding property of the polybutylene terephthalate resin composition can be improved while suppressing the reduction of the above.
- the colorant in the present invention is preferably (1) an organic pigment a, an organic pigment b and an organic pigment c, (2) Organic pigment a and organic pigment d, or (3) Organic pigment a, organic pigment b, organic pigment c and organic pigment d.
- the ratio of the colorant in the resin composition of the present invention is not particularly limited as long as the resin composition is given a black color.
- the total amount of the colorant is 0.05 parts by mass or more with respect to 100 parts by mass of the PBT resin. Preferably, it may be 0.10 parts by mass or more. Such a blending amount is preferable because the resin composition exhibits a sufficiently black color.
- the total amount of the colorant may be 5.0 parts by mass or less, preferably 3.0 parts by mass or less with respect to 100 parts by mass of the PBT resin. Such a blending amount is preferable because the mechanical properties of the PBT resin are hardly impaired.
- the resin composition of the present invention may contain a flame retardant and a flame retardant aid in order to impart flame retardancy.
- a flame retardant Halogen flame retardant, phosphorus flame retardant, nitrogen flame retardant, sulfur flame retardant, silicon flame retardant, alcohol flame retardant, inorganic flame retardant, aromatic resin flame retardant, etc. Is mentioned. These can be used individually by 1 type or in combination of 2 or more types.
- halogen-based flame retardants bromine-based flame retardants are likely to be carbonized, which may be undesirable in that the tracking resistance of the polybutylene terephthalate resin composition can be reduced.
- the organic pigment according to the present invention does not contain a halogen atom in the molecular structure, and therefore easily meets the demand for non-halogenation. Therefore, as the flame retardant in the present invention, it is preferable to use a flame retardant containing no halogen atom (particularly, a phosphorus flame retardant) because it can easily meet the demand for non-halogenation.
- a nitrogen-based flame retardant aid such as melamine cyanurate
- melamine cyanurate examples include antimony trioxide, antimony pentoxide, and melamine polyphosphate.
- the ratio of the flame retardant in the resin composition of the present invention is not particularly limited as long as desired flame retardancy can be imparted to the resin composition.
- the total amount of the flame retardant with respect to 100 parts by mass of the PBT resin is 10.0 mass. Part or more and 60.0 parts by mass or less.
- the ratio of the flame retardant aid in the resin composition of the present invention may be such that the total amount of the flame retardant aid is 1.0 part by mass or more and 30.0 parts by mass or less with respect to 100 parts by mass of the PBT resin. .
- the resin composition of the present invention contains known additives (glass fiber, anti-drip agent, antioxidant, stabilizer, crystal nucleating agent, lubricant, etc.) as long as the object of the present invention is not impaired. Also good. For example, when glass fiber is blended in the resin composition, excellent mechanical strength can be given to the resin composition.
- the compounding quantity of the well-known additive in the resin composition of this invention can be suitably adjusted according to the effect etc. which are going to be acquired. Further, as described above, since the present invention is easy to meet the demand for non-halogenation, the additive contained in the resin composition of the present invention does not contain a compound having a halogen atom or contains only a small amount. preferable.
- the method for producing the resin composition of the present invention is not particularly limited as long as the components constituting the resin composition can be uniformly mixed and the like, and can be appropriately selected from conventionally known methods for producing resin compositions.
- each component is melt kneaded and extruded using a melt kneader such as a single or twin screw extruder, and then a polybutylene terephthalate resin composition is prepared.
- a melt kneader such as a single or twin screw extruder
- a polybutylene terephthalate resin composition is prepared.
- a polybutylene terephthalate resin composition having high tracking resistance while exhibiting black color is provided.
- the tracking resistance of the resin composition is evaluated based on the UL746A tracking resistance test.
- the comparative tracking index (CTI) measured in accordance with UL746A satisfies PLC (Performance Level Category) class 0.
- a colorant containing an organic pigment containing no halogen atom is used as a colorant contained in the resin composition, and a flame retardant containing no halogen atom (phosphorus flame retardant, etc.) is used.
- a black polybutylene terephthalate resin composition having both tracking resistance and flame retardancy and satisfying the need for non-halogenation can be easily obtained.
- each resin composition Using each resin composition, the tracking resistance, the color of the resin composition, and the flame retardance were evaluated by the following methods. The evaluation results are shown in Tables 1 to 3. The presence or absence of halogen atoms in each resin composition is also shown in Tables 1 to 3.
- Test pieces (0.8 mm thickness) produced by injection molding of each resin composition at a cylinder temperature of 250 ° C. and a mold temperature of 80 ° C. conform to the UL-94 standard vertical combustion test of Underwriters Laboratories. The flammability was evaluated. As a result of the evaluation, when “V-0”, which is a criterion of high flame retardancy, was satisfied, “OK” was evaluated, and when “V-0” was not satisfied, “NG” was evaluated.
- Example 2 In the composition prepared in the same manner as in Example 2 except that Pigment Red 151 was used as the organic pigment c, all of the tracking resistance, the color of the resin composition, the presence or absence of halogen atoms, and the flame retardancy were exhibited. The result was the same as in Example 2. However, the molded article obtained from this composition and the molded article obtained from the composition described in Example 2 were each visually observed after being treated at 200 ° C. for 100 hours in a gear oven (manufactured by Toyo Seiki Seisakusho). As a result, the former showed significant discoloration compared to the latter.
- a polybutylene terephthalate resin composition having high tracking resistance can be obtained while the color of the composition is black.
- high flame retardance can also be implement
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Abstract
Description
着色剤とを含むポリブチレンテレフタレート樹脂組成物であって、
上記着色剤は、[1]青色の有機顔料a、黄色の有機顔料b及び赤色の有機顔料c、又は、[2]青色の有機顔料a及び橙色の有機顔料dの組み合わせを少なくとも含み、
上記有機顔料a乃至dはいずれも分子構造中にハロゲン原子を含まず、
上記ポリブチレンテレフタレート樹脂組成物から得られた成形品についてJIS Z8729:2004に準拠して測定したL*a*b*表色系におけるL*値は25以下であり、
UL746Aに準拠して測定される比較トラッキング指数がPLC等級0であるポリブチレンテレフタレート樹脂組成物。
上記黄色の有機顔料bは、Pigment Yellow147、Pigment Yellow150、Pigment Yellow180、及びPigment Yellow181からなる群から選択される1種以上であり、
上記赤色の有機顔料cは、Pigment Red122、Pigment Red149、Pigment Red175、Pigment Red208、Pigment Red247、Pigment Red255からなる群から選択される1種以上であり、
上記橙色の有機顔料dは、Pigment Orange43、Pigment Orange68、Pigment Orange73からなる群から選択される1種以上である(1)又は(2)に記載のポリブチレンテレフタレート樹脂組成物。
本発明のポリブチレンテレフタレート樹脂組成物(以下、単に「樹脂組成物」とも言う)は、ポリブチレンテレフタレート樹脂と、所定の有機顔料を含む着色剤とを少なくとも含む。以下、本発明の樹脂組成物を構成する成分について説明する。
本発明におけるポリブチレンテレフタレート樹脂(以下、「PBT樹脂」とも言う)とは、少なくともテレフタル酸又はそのエステル形成誘導体(低級アルコールエステル等)を含むジカルボン酸成分と、少なくとも炭素数4のアルキレングリコール(1,4-ブタンジオール)又はそのエステル形成誘導体を含むグリコール成分とを重縮合して得られるポリブチレンテレフタレート系樹脂である。PBT樹脂は、ホモPBT樹脂に限らず、ブチレンテレフタレート単位を60モル%以上(特に75~95モル%程度)含有する共重合体(共重合PBT樹脂)であってもよい。PBT樹脂は、1種単独で又は2種以上を組み合わせて使用できる。
本発明における着色剤は、所定の有機顔料の組み合わせを含む。具体的には、本発明における着色剤は、(1)青色の有機顔料a、黄色の有機顔料b及び赤色の有機顔料c、又は、(2)青色の有機顔料a及び橙色の有機顔料dの組み合わせを少なくとも含む。以下、「青色の有機顔料a」、「黄色の有機顔料b」等は、単に「有機顔料a」、「有機顔料b」等とも言う。
黄色の有機顔料bは、Pigment Yellow147、Pigment Yellow150、Pigment Yellow180、及びPigment Yellow181からなる群から選択される1種以上であってもよい。
赤色の有機顔料cは、Pigment Red122、Pigment Red149、Pigment Red175、Pigment Red208、Pigment Red247、Pigment Red255からなる群から選択される1種以上であってもよい。
橙色の有機顔料dは、Pigment Orange43、Pigment Orange68、Pigment Orange73からなる群から選択される1種以上であってもよい。
なお、上記の有機顔料a乃至有機顔料dはいずれも耐熱性に優れ、DIN EN 12877に規定された耐熱性が260℃以上である。特に、上記の有機顔料a乃至有機顔料dのうち、Pigment Yellow147及びPigment Yellow150(いずれもDIN EN 12877に規定された耐熱性が280℃である)以外は、DIN EN 12877に規定された耐熱性が300℃以上であるので、高温環境下での変色や褪色の恐れが少ない点で特に好ましい。また、上記の有機顔料a乃至有機顔料dはいずれも分子構造中にハロゲン原子を含まない。
本発明の樹脂組成物には、難燃性を与えるために難燃剤及び難燃助剤が含まれていてもよい。難燃剤としては特に限定されないが、ハロゲン系難燃剤、リン系難燃剤、窒素系難燃剤、イオウ系難燃剤、ケイ素系難燃剤、アルコール系難燃剤、無機系難燃剤、芳香族樹脂難燃剤等が挙げられる。これらは1種単独で又は2種以上を組み合わせて使用できる。ハロゲン系難燃剤のうち臭素系難燃剤は、炭化しやすいので、ポリブチレンテレフタレート樹脂組成物の耐トラッキング性を低下させ得る点で好ましくない可能性がある。
本発明の樹脂組成物には、本発明の目的を阻害しない範囲で、公知の添加剤(ガラス繊維、滴下防止剤、酸化防止剤、安定剤、結晶核剤、滑剤等)が含まれていてもよい。例えば、ガラス繊維が樹脂組成物中に配合されていると、樹脂組成物に優れた機械的強度を与えることができる。本発明の樹脂組成物における公知の添加剤の配合量は、得ようとする効果等に応じて適宜調整できる。また、上記の通り、本発明は、ノンハロゲン化の要求に応えやすいので、本発明の樹脂組成物に含まれる添加剤は、ハロゲン原子を有する化合物を含まないか、又はごく少量しか含まないものが好ましい。
本発明の樹脂組成物の製造方法としては、樹脂組成物を構成する成分を均一に混合等できれば特に限定されず、従来知られる樹脂組成物の製造方法から適宜選択することができる。
本発明によれば、黒色を呈しながらも、高い耐トラッキング性を有するポリブチレンテレフタレート樹脂組成物が提供される。樹脂組成物の耐トラッキング性は、UL746A 耐トラッキング性試験に準拠して評価される。本発明の樹脂組成物は、UL746Aに準拠して測定した比較トラッキング指数(CTI)がPLC(Performance Level Category)等級0を満たす。
ポリブチレンテレフタレート樹脂(下記表中「PBT」):商品名「ジュラネックス(登録商標) 500FP」、ウィンテックポリマー社製
有機顔料a(下記表中「a(青)」):Pigment Blue15:3(商品名「PV Fast Blue BG」、クラリアント社製)
有機顔料b(下記表中「b(黄)」):Pigment Yellow181(商品名「PV Fast Yellow H3R」、クラリアント社製)
有機顔料c(下記表中「c-1(赤:非ハロゲン系)」):Pigment Red149(商品名「PV Fast Red B」、クラリアント社製)
有機顔料c(下記表中「c-2(赤:ハロゲン系)」):Pigment Red187(商品名「PV Fast Red HF4B」、クラリアント社製)
有機顔料d(下記表中「d(橙)」):Pigment Orange73
カーボンブラック:商品名「MA600B」、三菱化学社製
リン系難燃剤:商品名「Exolite OP1240」、クラリアント社製
メラミンシアヌレート:商品名「MELAPUR MC50」、BASF社製、これは難燃助剤に相当する
臭素系難燃剤:商品名「FR-1025」、アイシーエル・アイピー社製
三酸化アンチモン:商品名「PATOX-M」、日本精鉱社製、これは難燃助剤に相当する
ガラス繊維:商品名「CSF 3PE-941」、日東紡績社製
滴下防止剤:商品名「フルオン CD-076」、旭硝子社製
UL746A 耐トラッキング性試験に準拠して、各樹脂組成物について、CTIのPLC等級を判定した。PLC等級が最高ランクである「0」である場合は「OK」と評価し、PLC等級が「0」でない場合は「NG」と評価した。
各樹脂組成物を、シリンダー温度250℃、金型温度80℃で、射出成形して製造した80mm×80mm×3mmの平板の色味を、分光色差計SE6000(日本電色工業社製)によって評価した。平板の色味が黒色である(つまり、JIS Z8729:2004に準拠して測定される、L*a*b*表色系におけるL*値が25以下である)場合は「OK」と評価し、樹脂組成物の色味が黒色ではない場合は「NG」と評価した。
各樹脂組成物を、シリンダー温度250℃、金型温度80℃で、射出成形して製造した試験片(0.8mm厚み)について、アンダーライターズ・ラボラトリーズのUL-94規格垂直燃焼試験に準拠して燃焼性を評価した。評価の結果、高い難燃性を有するという基準である「V-0」を満たす場合は「OK」と評価し、「V-0」を満たさない場合は「NG」と評価した。
Claims (5)
- ポリブチレンテレフタレート樹脂と、
着色剤とを含むポリブチレンテレフタレート樹脂組成物であって、
前記着色剤は、(1)青色の有機顔料a、黄色の有機顔料b及び赤色の有機顔料c、又は、(2)青色の有機顔料a及び橙色の有機顔料dの組み合わせを少なくとも含み、
前記有機顔料a乃至dはいずれも分子構造中にハロゲン原子を含まず、
前記ポリブチレンテレフタレート樹脂組成物から得られた成形品についてJIS Z8729:2004に準拠して測定したL*a*b*表色系におけるL*値は25以下であり、
UL746Aに準拠して測定される比較トラッキング指数がPLC等級0であるポリブチレンテレフタレート樹脂組成物。 - 前記着色剤は、DIN EN 12877に準拠して求められる耐熱性が260℃以上である請求項1に記載のポリブチレンテレフタレート樹脂組成物。
- 前記青色の有機顔料aは、Pigment Blue15:3、Pigment Blue16からなる群から選択される1種以上であり、
前記黄色の有機顔料bは、Pigment Yellow147、Pigment Yellow150、Pigment Yellow180、及びPigment Yellow181からなる群から選択される1種以上であり、
前記赤色の有機顔料cは、Pigment Red122、Pigment Red149、Pigment Red175、Pigment Red208、Pigment Red247、Pigment Red255からなる群から選択される1種以上であり、
前記橙色の有機顔料dは、Pigment Orange43、Pigment Orange68、Pigment Orange73からなる群から選択される1種以上である請求項1又は2に記載のポリブチレンテレフタレート樹脂組成物。 - さらに、リン系難燃剤、又は、リン系難燃剤及び窒素系難燃助剤を含む請求項1から3のいずれかに記載のポリブチレンテレフタレート樹脂組成物。
- さらに、ガラス繊維を含む請求項1から4のいずれかに記載のポリブチレンテレフタレート樹脂組成物。
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WO2022249980A1 (ja) * | 2021-05-28 | 2022-12-01 | ポリプラスチックス株式会社 | レーザー透過性樹脂組成物及びその成形品 |
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CN111218096A (zh) * | 2020-03-25 | 2020-06-02 | 深圳市富恒新材料股份有限公司 | 一种高cti值黑色阻燃增强pbt工程塑料及其制备方法 |
CN113462129B (zh) * | 2021-05-31 | 2023-03-21 | 武汉金发科技有限公司 | 一种阻燃pbt复合材料及其制备方法 |
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