WO2013099522A1 - Flame-retardant polyamide resin composition and molded article formed from same - Google Patents

Flame-retardant polyamide resin composition and molded article formed from same Download PDF

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Publication number
WO2013099522A1
WO2013099522A1 PCT/JP2012/081187 JP2012081187W WO2013099522A1 WO 2013099522 A1 WO2013099522 A1 WO 2013099522A1 JP 2012081187 W JP2012081187 W JP 2012081187W WO 2013099522 A1 WO2013099522 A1 WO 2013099522A1
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Prior art keywords
polyamide
mass
polyamide resin
flame
resin composition
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PCT/JP2012/081187
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French (fr)
Japanese (ja)
Inventor
恵一 服部
英男 余郷
元伸 山田
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東レ株式会社
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Priority to JP2012554549A priority Critical patent/JP5966931B2/en
Publication of WO2013099522A1 publication Critical patent/WO2013099522A1/en

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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098Metal salts of carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/16Nitrogen-containing compounds
    • C08K5/34Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3477Six-membered rings
    • C08K5/3492Triazines

Definitions

  • the present invention relates to a flame retardant polyamide resin composition having excellent moldability and excellent glow wire characteristics, flame retardancy, and electrical characteristics, and a molded article comprising the same.
  • polyamide resins have been widely used in the housing, exterior parts, and electrical fields because of their excellent mechanical properties, heat resistance, flame retardancy, electrical properties, moldability, etc., especially for connector applications It is a good resin.
  • the downsizing of products, housings, exterior parts, and connectors are also becoming smaller and thinner, so the demand for flame retardancy required for resins has become even more severe and advanced flame retardancy. Technology is required.
  • the required temperature has been changed from 725 ° C to 775 ° C due to the revision of the IEC 60335-1 standard ("safety of electrical equipment for household and similar uses"), and the product thickness used It was stipulated that the test should be performed at a thickness closest to the product thickness without exceeding. Further, as an index of electrical characteristics, a tracking resistance index defined in IEC60112 is often used, and 600 V or more is required.
  • Examples of techniques for improving flame retardancy and electrical properties include, for example, a polyamide structural unit (a) composed of a salt of an aliphatic diamine and an aliphatic dicarboxylic acid, and a polyamide structural unit (b) composed of a lactam or an ⁇ -amino acid.
  • a flame retardant polyamide resin composition comprising 35 to 60 parts by weight of a triazine flame retardant based on 100 parts by weight of a polyamide resin polymerized at a predetermined ratio (see, for example, Patent Document 1). .
  • Patent Document 1 contains a large amount of a triazine flame retardant, the toughness of the molded product may be lowered, and the moldability when molding a product having a complicated shape is also a problem. Become. Further, a dispersant containing a higher fatty acid salt and a carboxylic acid amide wax in a predetermined ratio is added to improve moldability, but it is difficult to achieve both moldability and glow wire characteristics.
  • an aminotriazine compound salt with respect to 100 parts by weight of the polyamide resin, and at least one selected from the group consisting of a hindered phenol compound, a hydrotalcite, and an alkaline earth metal hydroxide
  • a flame retardant polyamide resin composition comprising the above compound is disclosed (see, for example, Patent Document 2).
  • Patent Document 2 it is described that by selecting a salt of an aminotriazine compound as a flame retardant, effects such as flame retardancy and glow wire properties can be obtained by blending about 10 parts by weight with respect to 100 parts by weight of the polyamide resin. Yes.
  • Patent Document 3 discloses a technique that imparts good moldability by using a carboxylic acid amide wax as a lubricant, but the polyamide resin composition of Patent Document 3 also has a more complicated shape. In molding, it was difficult to achieve both moldability and glow wire characteristics.
  • the present invention provides a flame-retardant polyamide resin composition capable of obtaining a molded product having excellent moldability and excellent glow wire characteristics, flame retardancy, electrical characteristics and toughness, and It is an object to provide a molded product.
  • the polyamide resin (A) contains a specific amount of a triazine compound (B), a higher fatty acid metal salt (C1), and a carboxylic acid amide wax (C2). It has been found that the above object can be achieved by the blended flame-retardant polyamide resin composition, and the present invention has been achieved.
  • the flame retardant polyamide resin composition of the present invention contains a polyamide resin (A), a triazine compound (B), and a lubricant (C), and the polyamide resin (A) and the triazine compound (
  • the blending ratio of B) and the lubricant (C) is 12 to 38 parts by mass of the triazine compound (B) and 0.1% of the lubricant (C) with respect to 100 parts by mass of the polyamide resin (A).
  • the polyamide resin (A) is at least 2% by mass to 98% by mass caproamide units (a1) and 2% by mass to 98% by mass.
  • the polyamide resin (A) is at least 50% by mass to 98% by mass caproamide units (a1) and 2% by mass to 50% by mass.
  • the polyamide resin (A) further comprises at least 50% by mass and not more than 98% by mass of hexamethylene adipamide units (a2) and 2 A polyamide 66 / polyamide 6 copolymer resin (A3) containing at least mass% and less than 50 mass% of caproamide units (a1).
  • the polyamide resin (A) further includes a polyamide 66 resin (A4).
  • the flame retardant polyamide resin composition of the present invention is the thickness obtained by injection molding of the flame retardant polyamide resin composition in the above invention under the conditions of a cylinder temperature of 280 ° C. and a mold surface temperature of 80 ° C.
  • the glow wire ignition temperature in a test based on IEC60695-2-13 for each of the 0.75 mm, 1.5 mm, and 3 mm test pieces is 825 ° C. or higher.
  • the molded article of the present invention is formed by molding the flame retardant polyamide resin composition described in any one of the above by injection molding, extrusion molding or blow molding.
  • the molded product of the present invention is the above-mentioned invention, wherein the molded product is a casing, an exterior part, or a connector.
  • the flame-retardant polyamide resin composition of the present invention comprises a specific amount of a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2) as a triazine compound (B) and a lubricant (C) in a polyamide resin (A).
  • C1 higher fatty acid metal salt
  • C2 carboxylic acid amide wax
  • B triazine compound
  • C lubricant
  • Examples of the polyamide resin (A) used in the present invention include a polyamide resin obtained by polymerization of a lactam having three or more members, a polymerizable amino acid, a diamine and a dibasic acid, or a mixture thereof.
  • polyamide resins obtained from lactams such as ⁇ -caprolactam, enantolactam, undecaractam, dodecaractam, aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 9-aminononanoic acid, 10-
  • lactams such as ⁇ -caprolactam, enantolactam, undecaractam, dodecaractam, aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 9-aminononanoic acid
  • lactams such as ⁇ -caprolactam, enantolactam, undecaractam, dodecaractam, aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 9-aminononanoic acid
  • polyamide resins obtained from polymerizable amino acids such as aminodecano
  • Polyamide resins obtained from diamines and dibasic acids include tetramethylene diamine, pentamethylene diamine, 2-methyl-1,5-diminopentane, 3-methyl-1,5-diminopentane, hexamethylene diamine, heptamethylene diamine.
  • the polyamide resin (A) used in the present invention includes any copolymer of the above monomer units.
  • the polyamide resin (A) may contain two or more of the above polyamide resins or polyamide copolymers.
  • the polyamide resin (A) used in the present invention is preferably a polyamide 6 / polyamide 66 copolymer resin from the viewpoint of toughness, moldability, and cost of a molded product.
  • the polyamide resin (A) used in the present invention contains at least 2% by mass to 98% by mass of caproamide units (a1) and 2% by mass to 98% by mass of hexamethylene adipamide units (a2).
  • the polyamide 6 / polyamide 66 copolymer resin (A1) is preferable.
  • the polyamide resin (A) used in the present invention is a polyamide containing at least 50% by mass to 98% by mass caproamide units (a1) and 2% by mass to 50% by mass hexamethylene adipamide units (a2). 6 / polyamide 66 copolymer resin (A2) is preferred.
  • the polyamide resin (A) used in the present invention is a copolymer of at least 70% by mass to 98% by mass caproamide units (a1) and 2% by mass to 30% by mass hexamethylene adipamide units (a2). Particularly preferred is a copolymer of at least 90% by mass to 98% by mass of caproamide units (a1) and 2% by mass to 10% by mass of hexamethylene adipamide units (a2). preferable.
  • a polyamide 6 / polyamide 66 copolymer resin (A2) containing 50% by mass or more of caproamide units (a1) as the polyamide resin (A) according to the present invention a large amount of the triazine compound (B) was blended. Even in this case, the toughness of the molded product can be kept high, and the appearance can be improved. Further, by using the polyamide 6 / polyamide 66 copolymer resin (A2) containing 2% by mass or more of the hexamethylene adipamide unit (a2), the glow wire characteristics of the molded product are further improved.
  • the polyamide resin (A) according to the present invention is at least more than 50% by mass and 98% by mass or less of hexamethylene adipamide units (a2) and 2% by mass or more. It is preferable to contain a polyamide 66 / polyamide 6 copolymer resin (A3) containing less than 50% by mass of caproamide units (a1). Even when a large amount of the triazine compound (B) is blended by using the polyamide 6 / polyamide 66 copolymer resin (A2) and the polyamide 66 / polyamide 6 copolymer resin (A3) in combination, The toughness can be kept high and the appearance of the molded product becomes good.
  • the polyamide 66 / polyamide 6 copolymer resin (A3) used in combination with the polyamide 6 / polyamide 66 copolymer resin (A2) is at least 70% by mass to 98% by mass hexamethylene adipamide units (a2) and 2% by mass. % Or more and 30% by mass or less of a caproamide unit (a1) copolymer, particularly at least 90% by mass or more and 98% by mass or less of hexamethylene adipamide units (a2) and 2% by mass or more and 10% by mass or less. Most preferably, it is a copolymer of the following caproamide units (a1).
  • a polyamide 66 / polyamide 6 copolymer resin (A3) containing 2% by mass or more of a caproamide unit (a1) is used in combination with a polyamide 6 / polyamide 66 copolymer resin (A2). Even when a large amount of the triazine compound (B) is blended, the toughness of the molded product can be kept high, and the appearance is improved. Moreover, by using together the polyamide 66 / polyamide 6 copolymer resin (A3) containing more than 50% by mass of the hexamethylene adipamide unit (a2) with the polyamide 6 / polyamide 66 copolymer resin (A2), Glow wire characteristics are further improved.
  • the polyamide resin (A) according to the present invention contains (A2) and (A3) in an amount of 15% by mass or more, the toughness at the time of water absorption of the molded product can be kept high.
  • the polyamide resin (A) according to the present invention preferably further contains a polyamide 66 resin (A4).
  • the polyamide resin (A) according to the present invention contains the polyamide 66 resin (A4), moldability including mold releasability is greatly improved without impairing the glow wire characteristics.
  • the polyamide 6 / polyamide 66 copolymer resin (A2) and the polyamide 66 resin (A4) are used in combination.
  • polyamide 66 resin (A4) is 10 masses in a polyamide resin (A). % Or more is preferable.
  • the molecular weight of the polyamide resin (A) used in the present invention is not particularly limited, but from the viewpoint of fluidity of the obtained flame-retardant polyamide resin composition, a solution dissolved in 98% concentrated sulfuric acid at a concentration of 1 g / dl.
  • the relative viscosity is preferably in the range of 1.8 to 5.0 at 25 ° C., more preferably in the range of 1.8 to 4.0.
  • polyamide resin (A) used by this invention there is no restriction
  • the above-mentioned 3-membered ring lactam, the polymerizable amino acid, a diamine and a dibasic acid, or a mixture thereof is superposition
  • a desired polyamide resin (A) can be obtained by producing an oligomer by condensing under high pressure and high temperature, and then proceeding the polymerization to an appropriate melt viscosity by reducing the pressure.
  • a commercial item can also be used.
  • the flame-retardant polyamide resin composition of the present invention comprises a polyamide resin (A) and a triazine compound (B) in an amount of 12 to 38 parts by mass of the triazine compound (B) with respect to 100 parts by mass of the polyamide resin (A). It is necessary to contain in the ratio.
  • the flame retardant polyamide resin composition of the present invention contains the triazine compound (B)
  • a molded product having high glow wire characteristics and flame retardancy can be obtained.
  • the glow wire characteristics of the molded product are deteriorated.
  • the content of the triazine compound (B) is preferably 15 parts by mass or more, and more preferably 20 parts by mass or more. On the other hand, when the content of the triazine compound (B) exceeds 38 parts by mass in the flame retardant polyamide resin composition of the present invention, the toughness of the molded product is lowered.
  • the content of the triazine compound (B) is preferably 33 parts by mass or less.
  • the triazine compound (B) refers to a compound having a triazine skeleton containing three nitrogen atoms and having an unsaturated 6-membered ring structure.
  • the triazine-based compound (B) is known as a flame retardant that can be blended with a thermoplastic resin to impart flame retardancy.
  • a flame retardant that can be blended with a thermoplastic resin to impart flame retardancy.
  • Specific examples include melamine, melem, melam, melon, and cyanuric acid, and a salt of melamine, melem, melam, or melon and cyanuric acid. A mixture of these may also be used.
  • Melamine cyanurate is particularly preferred because of its heat resistance and good mixing with the polyamide resin (A).
  • the average particle size of the triazine compound (B) is preferably 15 ⁇ m or less. If the average particle diameter is 15 ⁇ m or less, the toughness at the time of water absorption is further improved.
  • the average particle diameter is a number average particle diameter calculated from a value measured according to JIS K 5600-9-3 (2006).
  • triazine compound (B) for example, MC25 (melamine cyanurate) manufactured by Italmatch, MC4000 (melamine cyanurate) manufactured by Nissan Chemical Industries, Ltd. can be used.
  • the lubricant (C) used in the present invention contains a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2) from the viewpoint of glow wire characteristics and moldability.
  • a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2) from the viewpoint of glow wire characteristics and moldability.
  • it is important to contain at a mass ratio of (C1) / (C2) 30/70 to 70/30.
  • the total amount of the lubricant (C) is 0.1 to 2.0 parts by mass with respect to 100 parts by mass of the polyamide resin (A).
  • the total amount of the lubricant (C) is less than 0.1 parts by mass, the moldability is lowered. It is preferable to set it as 0.5 mass part or more.
  • the total amount of (C) exceeds 2.0 parts by mass, the glow wire characteristics of the molded product deteriorate. It is preferable to be 1.9 parts by mass or less.
  • the higher fatty acid metal salt (C1) used in the present invention is a salt of an aliphatic carboxylic acid or hydroxycarboxylic acid having 12 or more carbon atoms and a metal ion, specifically, lauric acid, myristic acid, palmitic acid, Aliphatic carboxylic acids such as stearic acid, behenic acid, serotic acid, montanic acid, mellic acid, oleic acid, erucic acid, 12-hydroxystearic acid and hydroxycarboxylic acids and metals such as lithium, calcium, barium, magnesium, aluminum, zinc It is a salt with ions. Two or more of these may be used as the higher fatty acid metal salt (C1). In particular, from the viewpoints of price and versatility, lithium stearate and calcium stearate are preferable, and lithium stearate is more preferable.
  • higher fatty acid metal salt (C1) for example, Li-St (lithium stearate) manufactured by Katsuta Chemical Co., Ltd. can be used.
  • the carboxylic acid amide wax (C2) used in the present invention is a compound obtained by polycondensation of aliphatic carboxylic acid, hydroxycarboxylic acid and / or polybasic acid and diamine.
  • Examples of the aliphatic carboxylic acid or hydroxycarboxylic acid used in the carboxylic acid amide wax (C2) include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, serotic acid, montanic acid, melicic acid, and olein. Examples include acids, erucic acid, and 12-hydroxystearic acid.
  • Polybasic acids used for the carboxylic acid amide wax (C2) include oxalic acid, malonic acid, succinic acid, glutamic acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, 1,10-decanedicarboxylic acid.
  • Examples include acid, phthalic acid, terephthalic acid, cyclohexanedicarboxylic acid, and cyclohexylsuccinic acid.
  • the diamine used in the carboxylic acid amide wax (C2) includes ethylenediamine, 1,3-propanediamine, 1,4-butanediamine, hexamethylenediamine, metaxylenediamine, tolylenediamine, paraxylenediamine, Examples thereof include phenylenediamine, isophoronediamine, 1,10-decanediamine, 1,12-dodecanediamine, 4,4-diaminodicyclohexylmethane, and 4,4-diaminodiphenylmethane.
  • Examples of the carboxylic acid amide wax (C2) used in the present invention include the above-mentioned aliphatic carboxylic acids, hydroxycarboxylic acids and / or polycondensation compounds of polybasic acids and diamines.
  • the carboxylic acid amide wax (C2) used in the present invention two or more of these may be used.
  • a compound obtained by polycondensation of stearic acid and sebacic acid and ethylenediamine is preferable.
  • carboxylic acid amide wax (C2) for example, WH215 (polycondensate of ethylenediamine, sebacic acid and stearic acid) manufactured by Kyoeisha Chemical Co., Ltd. can be used.
  • the flame-retardant polyamide resin composition of the present invention further includes other polymers, copper-based heat stabilizers, hindered phenol-based, phosphorus-based, sulfur-based antioxidants, and the like within a range that does not impair the object of the present invention.
  • One or more usual additives such as stabilizers, ultraviolet absorbers, antistatic agents, and colorants including dyes and pigments may be contained.
  • the method for producing the flame retardant polyamide resin composition of the present invention is not particularly limited.
  • a mixture of the above materials is heated at 220 ° C. to 330 ° C. using a kneader such as a single-screw or twin-screw extruder or a kneader.
  • a kneader such as a single-screw or twin-screw extruder or a kneader.
  • a kneader such as a single-screw or twin-screw extruder or a kneader.
  • a kneading method at a temperature.
  • a flame retardant such as a triazine compound (B) exhibits a higher flame retardant effect as its dispersibility becomes better, and therefore, a production method in which it is melt kneaded simultaneously with the polyamide resin (A) component is preferable.
  • the glow wire ignition temperature is a thickness of 0.75 mm, 1.5 mm, It is preferable that it is 825 degreeC or more in 3 mm. If glow wire ignition temperature is 825 degreeC or more, the glow wire characteristic in a complicated product shape can be improved more.
  • the glow wire ignition temperature is called GW-IT (Glow Wire Ignition Temperature), and the wire heated to a desired temperature is pressed against a resin molded product with a specified thickness and does not ignite or extinguishes within 5 seconds after ignition.
  • Maximum temperature + 25 ° C. (however, when the test temperature is 900 to 960 ° C., the maximum temperature + 30 ° C.).
  • the flame-retardant polyamide resin composition of the present invention can be easily molded by ordinary methods such as injection molding, extrusion molding, blow molding, etc., and the obtained molded product has excellent moldability, glow wire characteristics, toughness It has excellent flame retardancy and electrical characteristics, and is suitable for electrical and electronic parts, automobile parts, housings, exterior parts, and connectors. Further, since it is particularly excellent in glow wire characteristics, toughness, flame retardancy, and electrical characteristics required for electric and electronic parts, it is particularly suitable for connector parts.
  • Molded products obtained by molding the flame retardant polyamide resin composition of the present invention are liquid crystal televisions, plasma displays, PDAs, small televisions, radios, notebook computers, personal computers, printers, scanners, computer peripherals, video decks, DVD decks.
  • Tensile breaking strain ISO 527-1, -2 (B) Tensile breaking strain (at 3% water absorption) The test piece obtained by the said method was immersed in 60 degreeC warm water, and the water absorption was calculated
  • Reference Example 1 Polyamide 6 / Polyamide 66 copolymer resin (A2) A material obtained by dissolving 95.0 parts by mass of ⁇ -caprolactam and 5.0 parts by mass of a salt of hexamethylenediamine and adipic acid in pure water and having a water content of 1 part by mass is used as a raw material for polymerization.
  • the raw materials were reacted while adjusting the temperature of the polymerization tower with a heater attached to the upper part, middle part, and lower part of the polymerization tower.
  • the polymer discharged into the water bath was pelletized with a strand cutter, and the obtained pellets were subjected to hot water extraction at 95 ° C./20 hours / bath ratio 20 times to remove unreacted raw materials and oligomers. After extraction, it was dried under reduced pressure at 80 ° C./30 hours to obtain a polyamide 6 / polyamide 66 copolymer resin (A2).
  • the relative viscosity with 98% sulfuric acid according to JIS-K6810 was 2.75.
  • Triazine compound (B) Italmatch, Inc .: MC25 (melamine cyanurate) was used.
  • the average particle diameter (number average value) was measured according to JIS K5600-9-3 and found to be 4 ⁇ m.
  • Example 1 Polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6
  • the carboxylic acid amide wax (C2) was top-feeded into the twin-screw extruder (manufactured by Werner & Pfleiderer: ZSK57) at the blending amount shown in Table 1, under the conditions of a cylinder set temperature of 290 ° C. and a screw speed of 200 rpm And kneaded to form a strand-like gut, cooled in a cooling bath, and granulated with a cutter to obtain pellets. Using the obtained pellets, various characteristics were examined by the above evaluation method. The results are shown in Table 1.
  • Example 7 Polyamide 66 resin (A4) shown in Reference Example 3, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, carboxylic acid amide system shown in Reference Example 6
  • the wax (C2) was melt-kneaded in the same amount as shown in Table 1 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 1.
  • Example 8 Polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6
  • the carboxylic acid amide wax (C2) was melt kneaded in the same amount as shown in Table 1 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 1.
  • Example 9 Polyamide 66 / polyamide 6 copolymer resin (A3) shown in Reference Example 2, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6
  • the carboxylic acid amide wax (C2) was melt kneaded in the same amount as shown in Table 1 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 1.
  • Example 14 The polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, the polyamide 66 resin (A4) shown in Reference Example 3, the triazine compound (B) shown in Reference Example 4, and the reference example 5
  • the higher fatty acid metal salt (C1) and the carboxylic acid amide wax (C2) shown in Reference Example 6 were melted and kneaded in the same manner as in Example 1 with the blending amounts shown in Table 2, to obtain pellets. Various characteristics were investigated. The results are shown in Table 2.
  • Table 3 shows the polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, the triazine compound (B) shown in Reference Example 4, and the carboxylic acid amide wax (C2) shown in Reference Example 6.
  • the mixture was melt kneaded in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation method described above. The results are shown in Table 3.
  • the flame-retardant polyamide resin composition and the molded product of the present invention are excellent in moldability and have excellent glow wire characteristics, toughness, flame retardancy, and electrical characteristics, so that electrical and electronic parts, automobile parts, housings, exterior parts, It can be suitably used for a connector.

Abstract

Provided are: a flame-retardant polyamide resin composition which has excellent moldability and is capable of providing a molded article that has excellent glow wire characteristics, flame retardancy and electrical characteristics; and a molded article which is formed from the flame-retardant polyamide resin composition. A flame-retardant polyamide resin composition of the present invention contains a polyamide resin (A), a triazine compound (B) and a lubricant (C). With respect to the blending ratio of the polyamide resin (A), the triazine compound (B) and the lubricant (C), 12-38 parts by mass of the triazine compound (B) and 0.1-2.0 parts by mass of the lubricant (C) are blended per 100 parts by mass of the polyamide resin (A). The lubricant (C) contains a higher fatty acid metal salt (C1) and a carboxylic acid amide-based wax (C2) at a mass ratio (C1)/(C2) of from 30/70 to 70/30.

Description

難燃性ポリアミド樹脂組成物およびそれからなる成形品Flame retardant polyamide resin composition and molded article comprising the same
 本発明は、成形性に優れ、グローワイヤー特性、難燃性、電気特性に優れる難燃性ポリアミド樹脂組成物およびこれからなる成形品に関する。 The present invention relates to a flame retardant polyamide resin composition having excellent moldability and excellent glow wire characteristics, flame retardancy, and electrical characteristics, and a molded article comprising the same.
 従来、ポリアミド樹脂は、機械特性、耐熱性、難燃性、電気特性や成形加工性等に優れていることから筐体、外装部品、電気分野において広く用いられており、特にコネクター用途には不可欠な樹脂である。しかし、近年では製品の小型化に伴い、筐体、外装部品、コネクターも小型化、薄肉化が進んでいることから、樹脂に求められる難燃性の要求がさらに厳しくなり、高度な難燃化技術が求められるようになっている。なかでも、グローワイヤー着火温度については、IEC60335-1規格(「家庭用及び類似用途の電気機器安全性」)の改訂により、要求温度が725℃から775℃に変更されるとともに、用いられる製品厚みを超えず最も製品厚みに近い厚みで試験することが規定された。また、電気特性の指標として、IEC60112に規定される耐トラッキング指数がよく用いられ、600V以上が要求されている。 Conventionally, polyamide resins have been widely used in the housing, exterior parts, and electrical fields because of their excellent mechanical properties, heat resistance, flame retardancy, electrical properties, moldability, etc., especially for connector applications It is a good resin. However, in recent years, with the downsizing of products, housings, exterior parts, and connectors are also becoming smaller and thinner, so the demand for flame retardancy required for resins has become even more severe and advanced flame retardancy. Technology is required. In particular, regarding the glow wire ignition temperature, the required temperature has been changed from 725 ° C to 775 ° C due to the revision of the IEC 60335-1 standard ("safety of electrical equipment for household and similar uses"), and the product thickness used It was stipulated that the test should be performed at a thickness closest to the product thickness without exceeding. Further, as an index of electrical characteristics, a tracking resistance index defined in IEC60112 is often used, and 600 V or more is required.
 難燃性や電気特性を向上させる技術として、例えば、脂肪族ジアミンと脂肪族ジカルボン酸との塩よりなるポリアミド構成単位(a)と、ラクタムまたはω-アミノ酸よりなるポリアミド構成単位(b)とを所定比で重合してなるポリアミド樹脂100重量部に対して、トリアジン系難燃剤35~60重量部を配合してなる難燃性ポリアミド樹脂組成物が開示されている(例えば、特許文献1参照)。しかしながら、特許文献1のポリアミド樹脂組成物はトリアジン系難燃剤を多量に配合するため、成形品の靭性が低下するおそれがあるとともに、複雑な形状を有する製品を成形する場合の成形性も問題となる。また、成形性向上のために高級脂肪酸塩とカルボン酸アミド系ワックスとを所定の割合で含む分散剤を添加しているが、成形性とグローワイヤー特性の両立が困難であった。 Examples of techniques for improving flame retardancy and electrical properties include, for example, a polyamide structural unit (a) composed of a salt of an aliphatic diamine and an aliphatic dicarboxylic acid, and a polyamide structural unit (b) composed of a lactam or an ω-amino acid. There is disclosed a flame retardant polyamide resin composition comprising 35 to 60 parts by weight of a triazine flame retardant based on 100 parts by weight of a polyamide resin polymerized at a predetermined ratio (see, for example, Patent Document 1). . However, since the polyamide resin composition of Patent Document 1 contains a large amount of a triazine flame retardant, the toughness of the molded product may be lowered, and the moldability when molding a product having a complicated shape is also a problem. Become. Further, a dispersant containing a higher fatty acid salt and a carboxylic acid amide wax in a predetermined ratio is added to improve moldability, but it is difficult to achieve both moldability and glow wire characteristics.
 また、ポリアミド樹脂100重量部に対し、アミノトリアジン化合物の塩を10~60重量部と、ヒンダードフェノール系化合物、ハイドロタルサイトおよびアルカリ土類金属の水酸化物からなる群より選ばれる少なくとも1種の化合物を含有してなる難燃性ポリアミド樹脂組成物が開示されている(例えば、特許文献2参照)。特許文献2では、難燃剤としてアミノトリアジン化合物の塩を選択することにより、ポリアミド樹脂100重量部に対し、10重量部程度の配合で難燃性、グローワイヤー性等の効果を奏すると記載されている。しかしながら、実施例では難燃剤を40重量部配合したポリアミド樹脂組成物でしか効果は確認されておらず、難燃剤を40重量部程度含むポリアミド樹脂組成物では、成形品の靭性が低下するおそれがあるとともに、複雑な形状を有する製品を成形する場合の成形性が問題となる。 In addition, 10 to 60 parts by weight of an aminotriazine compound salt with respect to 100 parts by weight of the polyamide resin, and at least one selected from the group consisting of a hindered phenol compound, a hydrotalcite, and an alkaline earth metal hydroxide A flame retardant polyamide resin composition comprising the above compound is disclosed (see, for example, Patent Document 2). In Patent Document 2, it is described that by selecting a salt of an aminotriazine compound as a flame retardant, effects such as flame retardancy and glow wire properties can be obtained by blending about 10 parts by weight with respect to 100 parts by weight of the polyamide resin. Yes. However, in the examples, the effect has been confirmed only with a polyamide resin composition containing 40 parts by weight of a flame retardant, and with a polyamide resin composition containing about 40 parts by weight of a flame retardant, the toughness of the molded product may be reduced. In addition, there is a problem with formability when a product having a complicated shape is formed.
 さらに、ポリアミド樹脂、トリアジン系難燃剤およびカルボン酸アマイド系ワックスを含有する難燃性ポリアミド樹脂が開示されている(例えば、特許文献3参照)。特許文献3では、滑剤としてカルボン酸アミド系ワックスを使用することによって良好な成形性を付与した技術が開示されているが、特許文献3のポリアミド樹脂組成物においても、より複雑な形状を有する製品を成形する上で、成形性とグローワイヤー特性との両立が困難であった。 Furthermore, a flame retardant polyamide resin containing a polyamide resin, a triazine flame retardant and a carboxylic acid amide wax has been disclosed (for example, see Patent Document 3). Patent Document 3 discloses a technique that imparts good moldability by using a carboxylic acid amide wax as a lubricant, but the polyamide resin composition of Patent Document 3 also has a more complicated shape. In molding, it was difficult to achieve both moldability and glow wire characteristics.
特開2008-239896号公報JP 2008-239896 A 米国特許出願公開第2010/160501号明細書US Patent Application Publication No. 2010/160501 欧州特許出願公開第1533343号明細書European Patent Application No. 1533334
 本発明は、上記従来技術の課題に鑑み、成形性に優れるとともに、グローワイヤー特性、難燃性、電気特性および靭性にも優れた成形品を得ることができる難燃性ポリアミド樹脂組成物およびそれからなる成形品を提供することを課題とする。 In view of the above-mentioned problems of the prior art, the present invention provides a flame-retardant polyamide resin composition capable of obtaining a molded product having excellent moldability and excellent glow wire characteristics, flame retardancy, electrical characteristics and toughness, and It is an object to provide a molded product.
 本発明者らは上記の課題を解決すべく鋭意検討した結果、ポリアミド樹脂(A)に、トリアジン系化合物(B)、高級脂肪酸金属塩(C1)およびカルボン酸アミド系ワックス(C2)を特定量配合した難燃性ポリアミド樹脂組成物によって、前記目的を達成し得ることを見いだし本発明に至った。 As a result of intensive studies to solve the above problems, the present inventors have determined that the polyamide resin (A) contains a specific amount of a triazine compound (B), a higher fatty acid metal salt (C1), and a carboxylic acid amide wax (C2). It has been found that the above object can be achieved by the blended flame-retardant polyamide resin composition, and the present invention has been achieved.
 すなわち本発明の難燃性ポリアミド樹脂組成物は、ポリアミド樹脂(A)と、トリアジン系化合物(B)と、滑剤(C)と、を含有し、前記ポリアミド樹脂(A)、前記トリアジン系化合物(B)、および前記滑剤(C)の配合割合は、前記ポリアミド樹脂(A)100質量部に対して、前記トリアジン系化合物(B)が12~38質量部、前記滑剤(C)が0.1~2.0質量部であり、前記滑剤(C)は、高級脂肪酸金属塩(C1)およびカルボン酸アミド系ワックス(C2)を、(C1)/(C2)= 30/70~70/30の質量比で含む。 That is, the flame retardant polyamide resin composition of the present invention contains a polyamide resin (A), a triazine compound (B), and a lubricant (C), and the polyamide resin (A) and the triazine compound ( The blending ratio of B) and the lubricant (C) is 12 to 38 parts by mass of the triazine compound (B) and 0.1% of the lubricant (C) with respect to 100 parts by mass of the polyamide resin (A). The lubricant (C) comprises a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2), (C1) / (C2) = 30/70 to 70/30. Including by mass ratio.
 また、本発明の難燃性ポリアミド樹脂組成物は、上記発明において、前記ポリアミド樹脂(A)は、少なくとも2質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上98質量%以下のヘキサメチレンアジパミド単位(a2)を含むポリアミド6/ポリアミド66共重合樹脂(A1)を含む。 In the flame-retardant polyamide resin composition of the present invention, the polyamide resin (A) is at least 2% by mass to 98% by mass caproamide units (a1) and 2% by mass to 98% by mass. The polyamide 6 / polyamide 66 copolymer resin (A1) containing the hexamethylene adipamide unit (a2).
 また、本発明の難燃性ポリアミド樹脂組成物は、上記発明において、前記ポリアミド樹脂(A)は、少なくとも50質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上50質量%以下のヘキサメチレンアジパミド単位(a2)を含むポリアミド6/ポリアミド66共重合樹脂(A2)を含む。 In the flame-retardant polyamide resin composition of the present invention, the polyamide resin (A) is at least 50% by mass to 98% by mass caproamide units (a1) and 2% by mass to 50% by mass. The polyamide 6 / polyamide 66 copolymer resin (A2) containing the hexamethylene adipamide unit (a2).
 また、本発明の難燃性ポリアミド樹脂組成物は、上記発明において、前記ポリアミド樹脂(A)は、さらに、少なくとも50質量%より多く98質量%以下のヘキサメチレンアジパミド単位(a2)および2質量%以上50質量%より少ないカプロアミド単位(a1)を含むポリアミド66/ポリアミド6共重合樹脂(A3)を含む。 In the flame-retardant polyamide resin composition of the present invention, in the above invention, the polyamide resin (A) further comprises at least 50% by mass and not more than 98% by mass of hexamethylene adipamide units (a2) and 2 A polyamide 66 / polyamide 6 copolymer resin (A3) containing at least mass% and less than 50 mass% of caproamide units (a1).
 また、本発明の難燃性ポリアミド樹脂組成物は、上記発明において、前記ポリアミド6/ポリアミド66共重合樹脂(A2)とポリアミド66/ポリアミド6共重合樹脂(A3)との質量比が、(A2)/(A3)=15/85~85/15である。 In the flame retardant polyamide resin composition of the present invention, the mass ratio of the polyamide 6 / polyamide 66 copolymer resin (A2) to the polyamide 66 / polyamide 6 copolymer resin (A3) in the above invention is (A2 ) / (A3) = 15/85 to 85/15.
 また、本発明の難燃性ポリアミド樹脂組成物は、上記発明において、前記ポリアミド樹脂(A)は、さらにポリアミド66樹脂(A4)を含む。 Further, in the flame retardant polyamide resin composition of the present invention, in the above invention, the polyamide resin (A) further includes a polyamide 66 resin (A4).
 また、本発明の難燃性ポリアミド樹脂組成物は、上記発明において、前記難燃性ポリアミド樹脂組成物を、シリンダ温度280℃、金型表面温度80℃の条件で射出成形して得られた厚み0.75mm、1.5mm、および3mmの各試験片についての、IEC60695-2-13に準拠した試験におけるグローワイヤー着火温度が825℃以上である。 Further, the flame retardant polyamide resin composition of the present invention is the thickness obtained by injection molding of the flame retardant polyamide resin composition in the above invention under the conditions of a cylinder temperature of 280 ° C. and a mold surface temperature of 80 ° C. The glow wire ignition temperature in a test based on IEC60695-2-13 for each of the 0.75 mm, 1.5 mm, and 3 mm test pieces is 825 ° C. or higher.
 また、本発明の成形品は、上記のいずれか一つに記載の難燃性ポリアミド樹脂組成物を、射出成形、押出成形またはブロー成形により成形してなる。 The molded article of the present invention is formed by molding the flame retardant polyamide resin composition described in any one of the above by injection molding, extrusion molding or blow molding.
 また、本発明の成形品は、上記発明において、前記成形品は、筐体、外装部品またはコネクターである。 The molded product of the present invention is the above-mentioned invention, wherein the molded product is a casing, an exterior part, or a connector.
 本発明の難燃性ポリアミド樹脂組成物は、ポリアミド樹脂(A)に、トリアジン系化合物(B)、滑剤(C)として高級脂肪酸金属塩(C1)およびカルボン酸アミド系ワックス(C2)を特定量配合することにより、高い難燃性および靭性、優れたグローワイヤー特性および電気特性を保持したまま、良好な成形性を有するものである。 The flame-retardant polyamide resin composition of the present invention comprises a specific amount of a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2) as a triazine compound (B) and a lubricant (C) in a polyamide resin (A). By blending, it has good moldability while maintaining high flame retardancy and toughness, excellent glow wire characteristics and electrical characteristics.
 以下、本発明の実施形態を説明する。 Hereinafter, embodiments of the present invention will be described.
 本発明で用いられるポリアミド樹脂(A)としては、3員環以上のラクタム、重合可能なアミノ酸、ジアミンと二塩基酸、あるいはこれらの混合物の重合によって得られるポリアミド樹脂が挙げられる。 Examples of the polyamide resin (A) used in the present invention include a polyamide resin obtained by polymerization of a lactam having three or more members, a polymerizable amino acid, a diamine and a dibasic acid, or a mixture thereof.
 具体的には、ε-カプロラクタム、エナントラクタム、ウンデカラクタム、ドデカラクタムなどのラクタムから得られるポリアミド樹脂や、アミノカプロン酸、7-アミノヘプタン酸、8-アミノオクタン酸、9-アミノノナン酸、10-アミノデカン酸、11-アミノウンデカン酸、12-アミノドデカン酸などの重合可能なアミノ酸から得られるポリアミド樹脂が挙げられる。 Specifically, polyamide resins obtained from lactams such as ε-caprolactam, enantolactam, undecaractam, dodecaractam, aminocaproic acid, 7-aminoheptanoic acid, 8-aminooctanoic acid, 9-aminononanoic acid, 10- Examples thereof include polyamide resins obtained from polymerizable amino acids such as aminodecanoic acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid.
 また、ジアミンと二塩基酸から得られるポリアミド樹脂としては、テトラメチレンジアミン、ペンタメチレンジアミン、2-メチル-1,5-ジミノペンタン、3-メチル-1,5-ジミノペンタン、ヘキサメチレンジアミン、ヘプタメチレンジアミン、オクタメチレンジアミン、ノナメチレンジアミン、デカメチレンジアミン、ウンデカメチレンジアミン、ドデカメチレンジアミン、o-キシリレンジアミン、m-キシリレンジアミン、p-キシリレンジアミン、1,2-ジアミノシクロヘキサン、1,3-ジアミノシクロヘキサン、1,4-ジアミノシクロヘキサンなどから選択されるジアミンと、コハク酸、グルタール酸、アジピン酸、ピメリン酸、スベリン酸、1,7-ヘプタンジカルボン酸、セバシン酸、1,9-ノナンジカルボン酸、1,10-デカンジカルボン酸、1,11-ウンデカンジカルボン酸、テレフタル酸、イソフタル酸、フタル酸、1,2-シクロヘキサンジカルボン酸、1,3-シクロヘキサンジカルボン酸、1,4-シクロヘキサンジカルボン酸などから選択されるジカルボン酸とから得られるポリアミド樹脂が挙げられる。 Polyamide resins obtained from diamines and dibasic acids include tetramethylene diamine, pentamethylene diamine, 2-methyl-1,5-diminopentane, 3-methyl-1,5-diminopentane, hexamethylene diamine, heptamethylene diamine. , Octamethylenediamine, nonamethylenediamine, decamethylenediamine, undecamethylenediamine, dodecamethylenediamine, o-xylylenediamine, m-xylylenediamine, p-xylylenediamine, 1,2-diaminocyclohexane, 1,3 A diamine selected from diaminocyclohexane, 1,4-diaminocyclohexane and the like, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, 1,7-heptanedicarboxylic acid, sebacic acid, 1,9-nonanedicar Acid, 1,10-decanedicarboxylic acid, 1,11-undecanedicarboxylic acid, terephthalic acid, isophthalic acid, phthalic acid, 1,2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid Examples thereof include polyamide resins obtained from dicarboxylic acids selected from acids and the like.
 あるいは、本発明で用いられるポリアミド樹脂(A)としては、上記のモノマー単位の任意の共重合体が挙げられる。またポリアミド樹脂(A)は、上記のポリアミド樹脂またはポリアミド共重合体を2種以上含有してもよい。 Alternatively, the polyamide resin (A) used in the present invention includes any copolymer of the above monomer units. The polyamide resin (A) may contain two or more of the above polyamide resins or polyamide copolymers.
 本発明で用いられるポリアミド樹脂(A)としては、これらの中でも、成形品の靭性、成形性、コストの観点からポリアミド6/ポリアミド66共重合樹脂が好ましい。とりわけ、本発明で使用するポリアミド樹脂(A)としては、少なくとも2質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上98質量%以下のヘキサメチレンアジパミド単位(a2)を含むポリアミド6/ポリアミド66共重合樹脂(A1)が好ましい。かかる共重合ポリアミド樹脂を使用することにより、成形品のグローワイヤー特性および靱性をより向上させることができる。 Among these, the polyamide resin (A) used in the present invention is preferably a polyamide 6 / polyamide 66 copolymer resin from the viewpoint of toughness, moldability, and cost of a molded product. In particular, the polyamide resin (A) used in the present invention contains at least 2% by mass to 98% by mass of caproamide units (a1) and 2% by mass to 98% by mass of hexamethylene adipamide units (a2). The polyamide 6 / polyamide 66 copolymer resin (A1) is preferable. By using such a copolymerized polyamide resin, the glow wire characteristics and toughness of the molded product can be further improved.
 本発明で用いられるポリアミド樹脂(A)としては、少なくとも50質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上50質量%以下のヘキサメチレンアジパミド単位(a2)を含むポリアミド6/ポリアミド66共重合樹脂(A2)が好ましい。本発明で用いられるポリアミド樹脂(A)は、少なくとも70質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上30質量%以下のヘキサメチレンアジパミド単位(a2)の共重合体であることが特に好ましく、少なくとも90質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上10質量%以下のヘキサメチレンアジパミド単位(a2)の共重合体であることが最も好ましい。 The polyamide resin (A) used in the present invention is a polyamide containing at least 50% by mass to 98% by mass caproamide units (a1) and 2% by mass to 50% by mass hexamethylene adipamide units (a2). 6 / polyamide 66 copolymer resin (A2) is preferred. The polyamide resin (A) used in the present invention is a copolymer of at least 70% by mass to 98% by mass caproamide units (a1) and 2% by mass to 30% by mass hexamethylene adipamide units (a2). Particularly preferred is a copolymer of at least 90% by mass to 98% by mass of caproamide units (a1) and 2% by mass to 10% by mass of hexamethylene adipamide units (a2). preferable.
 本発明にかかるポリアミド樹脂(A)として、カプロアミド単位(a1)を50質量%以上含むポリアミド6/ポリアミド66共重合樹脂(A2)を使用することにより、トリアジン系化合物(B)を多量に配合した場合でも成形品の靭性を高く保つことができ、かつ外観が良好となる。また、ヘキサメチレンアジパミド単位(a2)を2質量%以上含むポリアミド6/ポリアミド66共重合樹脂(A2)を使用することにより、成形品のグローワイヤー特性がより向上する。 By using a polyamide 6 / polyamide 66 copolymer resin (A2) containing 50% by mass or more of caproamide units (a1) as the polyamide resin (A) according to the present invention, a large amount of the triazine compound (B) was blended. Even in this case, the toughness of the molded product can be kept high, and the appearance can be improved. Further, by using the polyamide 6 / polyamide 66 copolymer resin (A2) containing 2% by mass or more of the hexamethylene adipamide unit (a2), the glow wire characteristics of the molded product are further improved.
 さらに本発明にかかるポリアミド樹脂(A)は、ポリアミド6/ポリアミド66共重合樹脂(A2)とともに、少なくとも50質量%より多く98質量%以下のヘキサメチレンアジパミド単位(a2)および2質量%以上50質量%より少ないカプロアミド単位(a1)を含むポリアミド66/ポリアミド6共重合樹脂(A3)を含有することが好ましい。ポリアミド6/ポリアミド66共重合樹脂(A2)とポリアミド66/ポリアミド6共重合樹脂(A3)とを併用することによって、トリアジン系化合物(B)を多量に配合した場合でも、成形品の吸水時の靭性を高く保つことができ、かつ成形品の外観が良好となる。ポリアミド6/ポリアミド66共重合樹脂(A2)と併用するポリアミド66/ポリアミド6共重合樹脂(A3)としては、少なくとも70質量%以上98質量%以下のヘキサメチレンアジパミド単位(a2)および2質量%以上30質量%以下のカプロアミド単位(a1)の共重合体であることが特に好ましく、少なくとも90質量%以上98質量%以下のヘキサメチレンアジパミド単位(a2)および2質量%以上10質量%以下のカプロアミド単位(a1)の共重合体であることが最も好ましい。 Further, the polyamide resin (A) according to the present invention, together with the polyamide 6 / polyamide 66 copolymer resin (A2), is at least more than 50% by mass and 98% by mass or less of hexamethylene adipamide units (a2) and 2% by mass or more. It is preferable to contain a polyamide 66 / polyamide 6 copolymer resin (A3) containing less than 50% by mass of caproamide units (a1). Even when a large amount of the triazine compound (B) is blended by using the polyamide 6 / polyamide 66 copolymer resin (A2) and the polyamide 66 / polyamide 6 copolymer resin (A3) in combination, The toughness can be kept high and the appearance of the molded product becomes good. The polyamide 66 / polyamide 6 copolymer resin (A3) used in combination with the polyamide 6 / polyamide 66 copolymer resin (A2) is at least 70% by mass to 98% by mass hexamethylene adipamide units (a2) and 2% by mass. % Or more and 30% by mass or less of a caproamide unit (a1) copolymer, particularly at least 90% by mass or more and 98% by mass or less of hexamethylene adipamide units (a2) and 2% by mass or more and 10% by mass or less. Most preferably, it is a copolymer of the following caproamide units (a1).
 本発明にかかるポリアミド樹脂(A)として、カプロアミド単位(a1)を2質量%以上含むポリアミド66/ポリアミド6共重合樹脂(A3)をポリアミド6/ポリアミド66共重合樹脂(A2)と併用することにより、トリアジン系化合物(B)を多量に配合した場合でも成形品の靭性を高く保つことができ、かつ外観が良好となる。また、ヘキサメチレンアジパミド単位(a2)を50質量%より多く含むポリアミド66/ポリアミド6共重合樹脂(A3)をポリアミド6/ポリアミド66共重合樹脂(A2)と併用することにより、成形品のグローワイヤー特性がより向上する。 As a polyamide resin (A) according to the present invention, a polyamide 66 / polyamide 6 copolymer resin (A3) containing 2% by mass or more of a caproamide unit (a1) is used in combination with a polyamide 6 / polyamide 66 copolymer resin (A2). Even when a large amount of the triazine compound (B) is blended, the toughness of the molded product can be kept high, and the appearance is improved. Moreover, by using together the polyamide 66 / polyamide 6 copolymer resin (A3) containing more than 50% by mass of the hexamethylene adipamide unit (a2) with the polyamide 6 / polyamide 66 copolymer resin (A2), Glow wire characteristics are further improved.
 ポリアミド6/ポリアミド66共重合樹脂(A2)とポリアミド66/ポリアミド6共重合体(A3)とを併用する場合の含有比率に特に制限はないが、成形品の靭性をより向上させるために(A2)/(A3)=15/85~85/15(質量比)が好ましく、さらに好ましくは(A2)/(A3)=20/80~80/20(質量比)である。本発明にかかるポリアミド樹脂(A)が、(A2)および(A3)をそれぞれ15質量%以上含有することによって、成形品の吸水時の靭性を高く保つことができる。 Although there is no particular limitation on the content ratio when the polyamide 6 / polyamide 66 copolymer resin (A2) and the polyamide 66 / polyamide 6 copolymer (A3) are used in combination, in order to further improve the toughness of the molded product (A2 ) / (A3) = 15/85 to 85/15 (mass ratio), more preferably (A2) / (A3) = 20/80 to 80/20 (mass ratio). When the polyamide resin (A) according to the present invention contains (A2) and (A3) in an amount of 15% by mass or more, the toughness at the time of water absorption of the molded product can be kept high.
 また、本発明にかかるポリアミド樹脂(A)は、さらにポリアミド66樹脂(A4)を含有することが好ましい。本発明にかかるポリアミド樹脂(A)がポリアミド66樹脂(A4)を含有することにより、グローワイヤー特性を損なうことなく、離型性をはじめとする成形性が大幅に向上する。ポリアミド6/ポリアミド66共重合樹脂(A2)とポリアミド66樹脂(A4)を併用することがより好ましい。ポリアミド樹脂(A)中のポリアミド66樹脂(A4)の含有量に特に制限はないが、成形性をより向上させる上で、ポリアミド樹脂(A)中には、ポリアミド66樹脂(A4)を10質量%以上含有することが好ましい。 The polyamide resin (A) according to the present invention preferably further contains a polyamide 66 resin (A4). When the polyamide resin (A) according to the present invention contains the polyamide 66 resin (A4), moldability including mold releasability is greatly improved without impairing the glow wire characteristics. More preferably, the polyamide 6 / polyamide 66 copolymer resin (A2) and the polyamide 66 resin (A4) are used in combination. Although there is no restriction | limiting in particular in content of the polyamide 66 resin (A4) in a polyamide resin (A), in order to improve a moldability more, polyamide 66 resin (A4) is 10 masses in a polyamide resin (A). % Or more is preferable.
 本発明で用いられるポリアミド樹脂(A)の分子量は特に制限はないが、得られる難燃性ポリアミド樹脂組成物の流動性の観点から、98%濃硫酸中に1g/dlの濃度で溶解した溶液の相対粘度が25℃で1.8~5.0の範囲であることが好ましく、1.8~4.0の範囲がより好ましい。 The molecular weight of the polyamide resin (A) used in the present invention is not particularly limited, but from the viewpoint of fluidity of the obtained flame-retardant polyamide resin composition, a solution dissolved in 98% concentrated sulfuric acid at a concentration of 1 g / dl. The relative viscosity is preferably in the range of 1.8 to 5.0 at 25 ° C., more preferably in the range of 1.8 to 4.0.
 本発明で用いられるポリアミド樹脂(A)の製造方法に特に制限はなく、例えば、上記記載の3員環以上のラクタム、重合可能なアミノ酸、ジアミンと二塩基酸、あるいはこれらの混合物を重合缶内で、加圧、高温下で縮合させることによりオリゴマーを生成し、その後、減圧により適切な溶融粘度まで重合を進行させることにより所望のポリアミド樹脂(A)を得ることができる。もちろん、市販品を使用することもできる。 There is no restriction | limiting in particular in the manufacturing method of the polyamide resin (A) used by this invention, For example, the above-mentioned 3-membered ring lactam, the polymerizable amino acid, a diamine and a dibasic acid, or a mixture thereof is superposition | polymerization inside. Thus, a desired polyamide resin (A) can be obtained by producing an oligomer by condensing under high pressure and high temperature, and then proceeding the polymerization to an appropriate melt viscosity by reducing the pressure. Of course, a commercial item can also be used.
 本発明の難燃性ポリアミド樹脂組成物は、ポリアミド樹脂(A)とトリアジン系化合物(B)とを、ポリアミド樹脂(A)100質量部に対して、トリアジン系化合物(B)12~38質量部の割合で含有することが必要である。本発明の難燃性ポリアミド樹脂組成物がトリアジン系化合物(B)を含有することで、高いグローワイヤー特性、難燃性を有する成形品が得られる。本発明の難燃性ポリアミド樹脂組成物において、トリアジン系化合物(B)の含有量が12質量部未満の場合、成形品のグローワイヤー特性が低下する。トリアジン系化合物(B)の含有量は、15質量部以上が好ましく、20質量部以上がより好ましい。一方、本発明の難燃性ポリアミド樹脂組成物において、トリアジン系化合物(B)の含有量が38質量部を越えると、成形品の靭性が低下する。トリアジン系化合物(B)の含有量は33質量部以下が好ましい。 The flame-retardant polyamide resin composition of the present invention comprises a polyamide resin (A) and a triazine compound (B) in an amount of 12 to 38 parts by mass of the triazine compound (B) with respect to 100 parts by mass of the polyamide resin (A). It is necessary to contain in the ratio. When the flame retardant polyamide resin composition of the present invention contains the triazine compound (B), a molded product having high glow wire characteristics and flame retardancy can be obtained. In the flame retardant polyamide resin composition of the present invention, when the content of the triazine compound (B) is less than 12 parts by mass, the glow wire characteristics of the molded product are deteriorated. The content of the triazine compound (B) is preferably 15 parts by mass or more, and more preferably 20 parts by mass or more. On the other hand, when the content of the triazine compound (B) exceeds 38 parts by mass in the flame retardant polyamide resin composition of the present invention, the toughness of the molded product is lowered. The content of the triazine compound (B) is preferably 33 parts by mass or less.
 本発明において、トリアジン系化合物(B)とは、3個の窒素原子を含み、不飽和の6員環構造を持つトリアジン骨格を有する化合物を指す。トリアジン系化合物(B)は、熱可塑性樹脂に配合されて難燃性を付与することが可能な難燃剤として知られている。具体的な例としては、メラミン、メレム、メラム、メロン、およびシアヌール酸、ならびにメラミン、メレム、メラムまたはメロンとシアヌール酸との塩が挙げられる。また、これらの混合物でもよい。耐熱性、およびポリアミド樹脂(A)との混合性の良さから、メラミンシアヌレートがとりわけ好ましい。トリアジン系化合物(B)の平均粒子径は15μm以下が好ましい。平均粒子径が15μm以下であれば、吸水時の靭性がより向上する。なお、平均粒子径はJIS K 5600-9-3(2006年)に準じて測定をした値から算出した数平均粒子径である。 In the present invention, the triazine compound (B) refers to a compound having a triazine skeleton containing three nitrogen atoms and having an unsaturated 6-membered ring structure. The triazine-based compound (B) is known as a flame retardant that can be blended with a thermoplastic resin to impart flame retardancy. Specific examples include melamine, melem, melam, melon, and cyanuric acid, and a salt of melamine, melem, melam, or melon and cyanuric acid. A mixture of these may also be used. Melamine cyanurate is particularly preferred because of its heat resistance and good mixing with the polyamide resin (A). The average particle size of the triazine compound (B) is preferably 15 μm or less. If the average particle diameter is 15 μm or less, the toughness at the time of water absorption is further improved. The average particle diameter is a number average particle diameter calculated from a value measured according to JIS K 5600-9-3 (2006).
 トリアジン系化合物(B)は、例えば、イタルマッチ社製MC25(メラミンシアヌレート)、日産化学工業(株)製MC4000(メラミンシアヌレート)などが使用できる。 As the triazine compound (B), for example, MC25 (melamine cyanurate) manufactured by Italmatch, MC4000 (melamine cyanurate) manufactured by Nissan Chemical Industries, Ltd. can be used.
 本発明で用いられる滑剤(C)は、グローワイヤー特性と成形性の観点から、高級脂肪酸金属塩(C1)およびカルボン酸アミド系ワックス(C2)を含有する。本発明の難燃性ポリアミド樹脂組成物において、高級脂肪酸金属塩(C1)とカルボン酸アミド系ワックス(C2)とを併用することによって、優れたグローワイヤー特性と成形性を両立することができる。本発明においては、(C1)/(C2)=30/70~70/30の質量比で含有することが重要である。(C1)と(C2)の総量に対して、(C1)が30質量%未満で(C2)が70質量%を超える場合、成形品のグローワイヤー特性が低下する。一方、(C1)が70質量%を超えて(C2)が30質量%未満である場合、成形性が低下する。さらに成形性を向上させる観点から高級脂肪酸金属塩(C1)とカルボン酸アミド系ワックス(C2)の含有比率は(C1)/(C2)=35/65~65/35が好ましく、(C1)/(C2)=40/60~60/40が特に好ましい。高級脂肪酸金属塩(C1)とカルボン酸アミド系ワックス(C2)とを上記の含有量比で使用することにより、本発明の難燃性ポリアミド樹脂組成物の成形性が大幅に向上し、より薄型、複雑形状の成形品を容易に得ることができる。 The lubricant (C) used in the present invention contains a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2) from the viewpoint of glow wire characteristics and moldability. In the flame-retardant polyamide resin composition of the present invention, by combining the higher fatty acid metal salt (C1) and the carboxylic acid amide wax (C2), it is possible to achieve both excellent glow wire characteristics and moldability. In the present invention, it is important to contain at a mass ratio of (C1) / (C2) = 30/70 to 70/30. When (C1) is less than 30% by mass and (C2) is more than 70% by mass with respect to the total amount of (C1) and (C2), the glow wire characteristics of the molded product are deteriorated. On the other hand, when (C1) exceeds 70 mass% and (C2) is less than 30 mass%, the moldability is lowered. Further, from the viewpoint of improving moldability, the content ratio of the higher fatty acid metal salt (C1) and the carboxylic acid amide wax (C2) is preferably (C1) / (C2) = 35/65 to 65/35, and (C1) / (C2) = 40/60 to 60/40 is particularly preferable. By using the higher fatty acid metal salt (C1) and the carboxylic acid amide wax (C2) in the above content ratio, the moldability of the flame-retardant polyamide resin composition of the present invention is greatly improved, and the thickness is reduced. A molded product having a complicated shape can be easily obtained.
 また、本発明の難燃性ポリアミド樹脂組成物において、ポリアミド樹脂(A)100質量部に対して、滑剤(C)の総量を0.1~2.0質量部とすることが重要である。本発明の難燃性ポリアミド樹脂組成物において、滑剤(C)の総量が0.1質量部未満の場合、成形性が低下する。0.5質量部以上とすることが好ましい。一方、(C)の総量が2.0質量部を超えると成形品のグローワイヤー特性が低下する。1.9質量部以下とすることが好ましい。 In the flame-retardant polyamide resin composition of the present invention, it is important that the total amount of the lubricant (C) is 0.1 to 2.0 parts by mass with respect to 100 parts by mass of the polyamide resin (A). In the flame-retardant polyamide resin composition of the present invention, when the total amount of the lubricant (C) is less than 0.1 parts by mass, the moldability is lowered. It is preferable to set it as 0.5 mass part or more. On the other hand, when the total amount of (C) exceeds 2.0 parts by mass, the glow wire characteristics of the molded product deteriorate. It is preferable to be 1.9 parts by mass or less.
 本発明で用いられる高級脂肪酸金属塩(C1)は、炭素数12以上の脂肪族カルボン酸またはヒドロキシカルボン酸と金属イオンとの塩であり、具体的には、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、ベヘン酸、セロチン酸、モンタン酸、メリシン酸、オレイン酸、エルカ酸、12-ヒドロキシステアリン酸などの脂肪族カルボン酸またはヒドロキシカルボン酸とリチウム、カルシウム、バリウム、マグネシウム、アルミニウム、亜鉛など金属のイオンとの塩である。高級脂肪酸金属塩(C1)として、これらを2種以上用いてもよい。とりわけ、価格面、汎用性の観点からステアリン酸リチウムおよびステアリン酸カルシウムが好ましく、ステアリン酸リチウムがより好ましい。 The higher fatty acid metal salt (C1) used in the present invention is a salt of an aliphatic carboxylic acid or hydroxycarboxylic acid having 12 or more carbon atoms and a metal ion, specifically, lauric acid, myristic acid, palmitic acid, Aliphatic carboxylic acids such as stearic acid, behenic acid, serotic acid, montanic acid, mellic acid, oleic acid, erucic acid, 12-hydroxystearic acid and hydroxycarboxylic acids and metals such as lithium, calcium, barium, magnesium, aluminum, zinc It is a salt with ions. Two or more of these may be used as the higher fatty acid metal salt (C1). In particular, from the viewpoints of price and versatility, lithium stearate and calcium stearate are preferable, and lithium stearate is more preferable.
 高級脂肪酸金属塩(C1)は、例えば、勝田化工(株)製Li-St(ステアリン酸リチウム)などを使用することができる。 As the higher fatty acid metal salt (C1), for example, Li-St (lithium stearate) manufactured by Katsuta Chemical Co., Ltd. can be used.
 本発明で用いられるカルボン酸アミド系ワックス(C2)は、脂肪族カルボン酸、ヒドロキシカルボン酸および/または多塩基酸とジアミンとを重縮合させた化合物である。カルボン酸アミド系ワックス(C2)に使用される脂肪族カルボン酸またはヒドロキシカルボン酸としては、例えば、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、ベヘン酸、セロチン酸、モンタン酸、メリシン酸、オレイン酸、エルカ酸、12-ヒドロキシステアリン酸が挙げられる。 The carboxylic acid amide wax (C2) used in the present invention is a compound obtained by polycondensation of aliphatic carboxylic acid, hydroxycarboxylic acid and / or polybasic acid and diamine. Examples of the aliphatic carboxylic acid or hydroxycarboxylic acid used in the carboxylic acid amide wax (C2) include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, serotic acid, montanic acid, melicic acid, and olein. Examples include acids, erucic acid, and 12-hydroxystearic acid.
 また、カルボン酸アミド系ワックス(C2)に使用される多塩基酸としては、シュウ酸、マロン酸、コハク酸、グルタン酸、アジピン酸、ピメリン酸、アゼライン酸、セバシン酸、1,10-デカンジカルボン酸、フタル酸、テレフタル酸、シクロヘキサンジカルボン酸、シクロヘキシルコハク酸が挙げられる。 Polybasic acids used for the carboxylic acid amide wax (C2) include oxalic acid, malonic acid, succinic acid, glutamic acid, adipic acid, pimelic acid, azelaic acid, sebacic acid, 1,10-decanedicarboxylic acid. Examples include acid, phthalic acid, terephthalic acid, cyclohexanedicarboxylic acid, and cyclohexylsuccinic acid.
 一方、カルボン酸アミド系ワックス(C2)に使用されるジアミンとしては、エチレンジアミン、1,3-プロパンジアミン、1,4-ブタンジアミン、ヘキサメチレンジアミン、メタキシレンジアミン、トリレンジアミン、パラキシレンジアミン、フェニレンジアミン、イソホロンジアミン、1,10-デカンジアミン、1,12-ドデカンジアミン、4,4-ジアミノジシクロヘキシルメタン、4,4-ジアミノジフェニルメタンが挙げられる。 On the other hand, the diamine used in the carboxylic acid amide wax (C2) includes ethylenediamine, 1,3-propanediamine, 1,4-butanediamine, hexamethylenediamine, metaxylenediamine, tolylenediamine, paraxylenediamine, Examples thereof include phenylenediamine, isophoronediamine, 1,10-decanediamine, 1,12-dodecanediamine, 4,4-diaminodicyclohexylmethane, and 4,4-diaminodiphenylmethane.
 本発明で用いられるカルボン酸アミド系ワックス(C2)は、上記の脂肪族カルボン酸、ヒドロキシカルボン酸および/または多塩基酸とジアミンとの重縮合化合物などが挙げられる。本発明で用いられるカルボン酸アミド系ワックス(C2)としては、これらを2種以上用いてもよい。とりわけ、汎用性の面から、ステアリン酸およびセバシン酸と、エチレンジアミンを重縮合させた化合物が好ましい。 Examples of the carboxylic acid amide wax (C2) used in the present invention include the above-mentioned aliphatic carboxylic acids, hydroxycarboxylic acids and / or polycondensation compounds of polybasic acids and diamines. As the carboxylic acid amide wax (C2) used in the present invention, two or more of these may be used. In particular, from the viewpoint of versatility, a compound obtained by polycondensation of stearic acid and sebacic acid and ethylenediamine is preferable.
 カルボン酸アミド系ワックス(C2)は、例えば、共栄社化学(株)製:WH215(エチレンジアミンとセバシン酸、ステアリン酸との重縮合物)を使用することができる。 As the carboxylic acid amide wax (C2), for example, WH215 (polycondensate of ethylenediamine, sebacic acid and stearic acid) manufactured by Kyoeisha Chemical Co., Ltd. can be used.
 本発明の難燃性ポリアミド樹脂組成物には、さらに本発明の目的を損なわない範囲で他のポリマー、銅系熱安定剤、ヒンダードフェノール系、リン系、イオウ系などの酸化防止剤、熱安定剤、紫外線吸収剤、帯電防止剤、および染料・顔料を含む着色剤などの通常の添加剤を一種以上含有することができる。 The flame-retardant polyamide resin composition of the present invention further includes other polymers, copper-based heat stabilizers, hindered phenol-based, phosphorus-based, sulfur-based antioxidants, and the like within a range that does not impair the object of the present invention. One or more usual additives such as stabilizers, ultraviolet absorbers, antistatic agents, and colorants including dyes and pigments may be contained.
 本発明の難燃性ポリアミド樹脂組成物の製造方法は特に制限がなく、例えば単軸または2軸の押出機やニーダー等の混練機を用いて、上記の材料の混合物を220℃~330℃の温度で溶融混練する方法等が挙げられる。また、トリアジン系化合物(B)などの難燃剤は、その分散性が良好なほど高い難燃効果が発現するため、ポリアミド樹脂(A)成分と同時に溶融混練する製造方法が好ましい。 The method for producing the flame retardant polyamide resin composition of the present invention is not particularly limited. For example, a mixture of the above materials is heated at 220 ° C. to 330 ° C. using a kneader such as a single-screw or twin-screw extruder or a kneader. Examples thereof include a melt kneading method at a temperature. In addition, a flame retardant such as a triazine compound (B) exhibits a higher flame retardant effect as its dispersibility becomes better, and therefore, a production method in which it is melt kneaded simultaneously with the polyamide resin (A) component is preferable.
 本発明の難燃性ポリアミド樹脂組成物からは、優れたグローワイヤー特性を有する成形品が得られる。具体的には、シリンダ温度280℃、金型表面温度80℃の条件で射出成形したときのIEC60695-2-13に準拠した試験において、グローワイヤー着火温度が、厚み0.75mm、1.5mm、3mmにおいて825℃以上であることが好ましい。グローワイヤー着火温度が825℃以上であれば、複雑な製品形状でのグローワイヤー特性をより向上させることができる。グローワイヤー着火温度は、GW-IT(Glow Wire Ignition Temperature)と呼ばれ、所望の温度に昇温したワイヤーを規定厚みを有した樹脂成形品に押し当て、着火しない若しくは着火後5秒以内に消火する最高温度+25℃(ただし、試験温度が900~960℃の場合は最高温度+30℃)のことである。 From the flame-retardant polyamide resin composition of the present invention, a molded product having excellent glow wire characteristics can be obtained. Specifically, in a test based on IEC60695-2-13 when injection molding is performed under conditions of a cylinder temperature of 280 ° C. and a mold surface temperature of 80 ° C., the glow wire ignition temperature is a thickness of 0.75 mm, 1.5 mm, It is preferable that it is 825 degreeC or more in 3 mm. If glow wire ignition temperature is 825 degreeC or more, the glow wire characteristic in a complicated product shape can be improved more. The glow wire ignition temperature is called GW-IT (Glow Wire Ignition Temperature), and the wire heated to a desired temperature is pressed against a resin molded product with a specified thickness and does not ignite or extinguishes within 5 seconds after ignition. Maximum temperature + 25 ° C. (however, when the test temperature is 900 to 960 ° C., the maximum temperature + 30 ° C.).
 本発明の難燃性ポリアミド樹脂組成物は、射出成形、押出成形、ブロー成形など通常の方法で容易に成形することができ、得られた成形品は、成形性に優れ、グローワイヤー特性、靭性、難燃性、電気特性に優れ、電気電子部品、自動車部品、筐体、外装部品、コネクターに好適である。また、電気電子部品に求められる特性である、グローワイヤー特性、靭性、難燃性、電気特性に特に優れていることから、コネクター部品に特に好適である。 The flame-retardant polyamide resin composition of the present invention can be easily molded by ordinary methods such as injection molding, extrusion molding, blow molding, etc., and the obtained molded product has excellent moldability, glow wire characteristics, toughness It has excellent flame retardancy and electrical characteristics, and is suitable for electrical and electronic parts, automobile parts, housings, exterior parts, and connectors. Further, since it is particularly excellent in glow wire characteristics, toughness, flame retardancy, and electrical characteristics required for electric and electronic parts, it is particularly suitable for connector parts.
 本発明の難燃性ポリアミド樹脂組成物を成形してなる成形品は、液晶テレビ、プラズマディスプレー、PDA、小型テレビ、ラジオ、ノートパソコン、パソコン、プリンター、スキャナー、パソコン周辺機器、ビデオデッキ、DVDデッキ、CDデッキ、MDデッキ、DATデッキ、アンプ、カセットデッキ、ポータブルCDプレーヤー、ポータブルMDプレーヤー、デジタルカメラ、家庭用電話、オフィス用電話、玩具、医療機器、炊飯器部品、電子レンジ部品、音響部品、照明部品、冷蔵庫部品、エアコン部品、ファクシミリ部品、コピー機部品に用いられるコネクターに特に好適である。 Molded products obtained by molding the flame retardant polyamide resin composition of the present invention are liquid crystal televisions, plasma displays, PDAs, small televisions, radios, notebook computers, personal computers, printers, scanners, computer peripherals, video decks, DVD decks. CD deck, MD deck, DAT deck, amplifier, cassette deck, portable CD player, portable MD player, digital camera, home phone, office phone, toy, medical equipment, rice cooker parts, microwave oven parts, acoustic parts, It is particularly suitable for connectors used for lighting parts, refrigerator parts, air conditioner parts, facsimile parts, and copier parts.
 以下、実施例を挙げてさらに本発明を詳細に説明するが、本発明はこれらにより限定されるものではない。実施例および比較例に用いた測定方法を以下に示す。 Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited thereto. Measurement methods used in Examples and Comparative Examples are shown below.
 (1)靭性
 ISO1874-2に従い、実施例および比較例で得られたペレットを、日精樹脂工業(株)製の射出成形機NEX1000により、シリンダ温度300℃、金型表面温度100℃、スクリュー回転数150rpm、平行部流速200mm/秒、射出/冷却=20/20秒の条件で射出成形し、ISO Type-A規格の試験片を作製した。
 (a)引張り破断ひずみ(絶乾時)
 上記方法により得られた試験片をアルミの防湿袋に真空密閉した。この試験片を用いて、以下の標準方法に従って引張り破断ひずみを測定した。引張り破断ひずみ(絶乾時)が3.0%以上であれば、靱性に優れると判断した。
引張り破断ひずみ:ISO 527-1、-2
 (b)引張り破断ひずみ(3%吸水時)
 上記方法により得られた試験片を60℃温水中に浸漬し、試験片の質量変化により吸水率を求めた。吸水率が3%となった時点で上記標準方法に従って引張り破断ひずみを同様に測定した。引張り破断ひずみ(3%吸水時)が40%以上であれば、吸水時の靱性に優れると判断した。
(1) Toughness According to ISO1874-2, the pellets obtained in the examples and comparative examples were subjected to a cylinder temperature of 300 ° C., a mold surface temperature of 100 ° C., and a screw rotation speed using an injection molding machine NEX1000 manufactured by Nissei Plastic Industry Co., Ltd. Injection molding was carried out under the conditions of 150 rpm, parallel part flow rate 200 mm / sec, injection / cooling = 20/20 sec, and ISO Type-A standard test pieces were produced.
(A) Tensile breaking strain (when completely dry)
The test piece obtained by the above method was vacuum-sealed in an aluminum moisture-proof bag. Using this test piece, tensile fracture strain was measured according to the following standard method. If the tensile strain at break (when absolutely dry) was 3.0% or more, it was judged that the toughness was excellent.
Tensile breaking strain: ISO 527-1, -2
(B) Tensile breaking strain (at 3% water absorption)
The test piece obtained by the said method was immersed in 60 degreeC warm water, and the water absorption was calculated | required by the mass change of the test piece. When the water absorption reached 3%, the tensile breaking strain was measured in the same manner according to the standard method. If the tensile breaking strain (at 3% water absorption) was 40% or more, it was judged that the toughness at the time of water absorption was excellent.
 (2)難燃性
 実施例および比較例で得られたペレットを用いて、日精樹脂工業(株)製の射出成形機NEX1000により、シリンダ温度280℃、金型表面温度80℃、スクリュー回転数100rpm、射出圧力150MPa、射出速度80mm/秒、射出/冷却=10/20秒の条件で射出成形し、127mm×12.7mm×1/64inchの試験片を作製した。得られた試験片を用いてUL94規格(米国Under Writer Laboratories Incで定められた規格)に準拠し、難燃性を評価した。
(2) Flame retardancy Using the pellets obtained in the examples and comparative examples, a cylinder temperature of 280 ° C., a mold surface temperature of 80 ° C., and a screw rotation speed of 100 rpm was obtained with an injection molding machine NEX1000 manufactured by Nissei Plastic Industry Co., Ltd. The test piece was 127 mm × 12.7 mm × 1/64 inch by injection molding under the conditions of injection pressure 150 MPa, injection speed 80 mm / second, injection / cooling = 10/20 second. Using the obtained test piece, flame retardancy was evaluated in accordance with UL94 standard (standard defined by Under Writer Laboratories Inc., USA).
 (3)グローワイヤー特性
 実施例および比較例で得られたペレットを、日精樹脂工業(株)製の射出成形機NEX1000により、シリンダ温度280℃、金型表面温度80℃、スクリュー回転数150rpm、射出圧力100MPa、射出速度100mm/秒、射出/冷却=20/20秒の条件で射出成形し、80mm×80mm×相応厚み(mm)の試験片を作製した。なお、試験片は厚み0.75mm、1.0mm、1.5mm、2.0mmおよび3.0mmの5種類を準備した。得られた試験片を用いて、IEC60695-2-13に準拠してグローワイヤー着火温度(GW-IT)を測定した。全ての試験片厚みにて、GW-IT:825℃以上を満たしたときに合格とした。
(3) Glow wire characteristics The pellets obtained in the examples and comparative examples were injected into a cylinder temperature of 280 ° C., a mold surface temperature of 80 ° C., a screw rotation speed of 150 rpm, by an injection molding machine NEX1000 manufactured by Nissei Plastic Industry Co., Ltd. Injection molding was performed under the conditions of a pressure of 100 MPa, an injection speed of 100 mm / second, and injection / cooling = 20/20 seconds to prepare a test piece of 80 mm × 80 mm × corresponding thickness (mm). In addition, five types of test pieces having thicknesses of 0.75 mm, 1.0 mm, 1.5 mm, 2.0 mm, and 3.0 mm were prepared. Using the obtained test piece, the glow wire ignition temperature (GW-IT) was measured according to IEC60695-2-13. All test specimen thicknesses were accepted when GW-IT: 825 ° C. or higher was satisfied.
 (4)耐トラッキング性
 実施例および比較例で得られたペレットを、日精樹脂工業(株)製の射出成形機NEX1000により、シリンダ温度280℃、金型表面温度80℃、スクリュー回転数150rpm、射出圧力100MPa、射出速度100mm/秒、射出/冷却=20/20秒の条件で射出成形し、および80mm×80mm×3mmの試験片を作製した。得られた試験片を用いて、UL746Aに準拠して測定した。
(4) Tracking resistance The pellets obtained in the examples and comparative examples were injected into a cylinder temperature of 280 ° C., a mold surface temperature of 80 ° C., a screw rotation speed of 150 rpm, by an injection molding machine NEX1000 manufactured by Nissei Plastic Industry Co., Ltd. Injection molding was performed under the conditions of a pressure of 100 MPa, an injection speed of 100 mm / second, and injection / cooling = 20/20 seconds, and a test piece of 80 mm × 80 mm × 3 mm was produced. It measured based on UL746A using the obtained test piece.
 (5)離型性
 実施例および比較例で得られたペレットを、日精樹脂工業(株)製の射出成形機NEX1000により、シリンダ温度280℃、金型表面温度80℃、スクリュー回転数150rpm、射出圧力100MPa、射出速度100mm/秒、射出/冷却=20/20秒の条件で射出成形し、25mm×25mm×25mm、肉厚1mmの箱型成形品を作製した。離型時にかかるエジェクタプレートへの負荷をロードセルで測定し、この数値を離型力とした。離型力100N未満を合格とした。
(5) Releasability The pellets obtained in the examples and comparative examples were injected with an injection molding machine NEX1000 manufactured by Nissei Plastic Industry Co., Ltd., at a cylinder temperature of 280 ° C., a mold surface temperature of 80 ° C., a screw rotation speed of 150 rpm, and injection. Injection molding was performed under the conditions of a pressure of 100 MPa, an injection speed of 100 mm / second, and injection / cooling = 20/20 seconds to produce a box-shaped molded product of 25 mm × 25 mm × 25 mm and a wall thickness of 1 mm. The load applied to the ejector plate at the time of mold release was measured with a load cell, and this value was taken as the mold release force. A release force of less than 100 N was accepted.
 参考例1 ポリアミド6/ポリアミド66共重合樹脂(A2)
 ε-カプロラクタム95.0質量部およびヘキサメチレンジアミンとアジピン酸の塩5.0質量部とを純水に溶解し、水分量を1質量部としたものを重合用の原料とし、得られた原料を重合塔に送った。重合塔上部、中間部、下部に取り付けられたヒーターにより重合塔の温度を加熱調整しながら、原料を反応させた。水浴中に吐出したポリマーをストランドカッターでペレタイズし、得られたペレットを95℃/20時間/浴比20倍にて熱水抽出を行い、未反応原料とオリゴマーを除去した。抽出後80℃/30時間減圧乾燥し、ポリアミド6/ポリアミド66共重合樹脂(A2)を得た。JIS-K6810に従った98%硫酸での相対粘度は2.75であった。
Reference Example 1 Polyamide 6 / Polyamide 66 copolymer resin (A2)
A material obtained by dissolving 95.0 parts by mass of ε-caprolactam and 5.0 parts by mass of a salt of hexamethylenediamine and adipic acid in pure water and having a water content of 1 part by mass is used as a raw material for polymerization. Was sent to the polymerization tower. The raw materials were reacted while adjusting the temperature of the polymerization tower with a heater attached to the upper part, middle part, and lower part of the polymerization tower. The polymer discharged into the water bath was pelletized with a strand cutter, and the obtained pellets were subjected to hot water extraction at 95 ° C./20 hours / bath ratio 20 times to remove unreacted raw materials and oligomers. After extraction, it was dried under reduced pressure at 80 ° C./30 hours to obtain a polyamide 6 / polyamide 66 copolymer resin (A2). The relative viscosity with 98% sulfuric acid according to JIS-K6810 was 2.75.
 参考例2 ポリアミド66/ポリアミド6共重合樹脂(A3)
 ε-カプロラクタム3.0質量部とヘキサメチレンジアミンとアジピン酸の塩97.0質量部とを重合缶に投入し、水分量が45質量部となるように純水を加え、重合缶内を窒素で置換した後、260℃まで昇温した。ついで、1.7MPaにて1時間制圧・重合後、吐出・カッティングし、ポリアミド66/ポリアミド6共重合樹脂(A3)を得た。JIS-K6810に従った98%硫酸での相対粘度は2.60であった。
Reference Example 2 Polyamide 66 / Polyamide 6 copolymer resin (A3)
ε-Caprolactam (3.0 parts by mass), hexamethylenediamine and adipic acid salt (97.0 parts by mass) were charged into a polymerization can, and pure water was added so that the water content was 45 parts by mass. The temperature was raised to 260 ° C. Subsequently, after pressure suppression and polymerization at 1.7 MPa for 1 hour, discharge and cutting were performed to obtain a polyamide 66 / polyamide 6 copolymer resin (A3). The relative viscosity with 98% sulfuric acid according to JIS-K6810 was 2.60.
 参考例3 ポリアミド66樹脂(A4)
 ポリアミド66(東レ株式会社製“アミラン(登録商標)”CM3001N:98%硫酸での相対粘度 3.0)を使用した。
Reference Example 3 Polyamide 66 resin (A4)
Polyamide 66 (“Amilan (registered trademark)” CM3001N manufactured by Toray Industries, Inc .: relative viscosity 3.0 with 98% sulfuric acid was used.
 参考例4 トリアジン系化合物(B)
 イタルマッチ社製:MC25(メラミンシアヌレート)を用いた。なお、JIS K5600-9-3に準じて平均粒子径(数平均値)を測定したところ、4μmであった。
Reference Example 4 Triazine compound (B)
Italmatch, Inc .: MC25 (melamine cyanurate) was used. The average particle diameter (number average value) was measured according to JIS K5600-9-3 and found to be 4 μm.
 参考例5 高級脂肪酸金属塩(C1)
 勝田化工(株)製:Li-St(ステアリン酸リチウム)を使用した。
Reference Example 5 Higher Fatty Acid Metal Salt (C1)
Katsuta Kako Co., Ltd. product: Li-St (lithium stearate) was used.
 参考例6 カルボン酸アミド系ワックス(C2)
 共栄社化学(株)製:WH215(エチレンジアミンとセバシン酸、ステアリン酸との重縮合物)を用いた。
Reference Example 6 Carboxylic acid amide wax (C2)
Kyoeisha Chemical Co., Ltd. product: WH215 (polycondensate of ethylenediamine, sebacic acid and stearic acid) was used.
 [実施例1~6]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表1に示す配合量で2軸押出機(Werner&Pfleiderer製:ZSK57)にトップフィード(元込めフィード)し、シリンダ設定温度290℃、スクリュー回転数200rpmの条件下で溶融混練し、ストランド状のガットを成形し、冷却バスで冷却後、カッターで造粒してペレットを得た。得られたペレットを用いて、前記の評価方法によって諸特性を調べた。その結果を表1に示す。
[Examples 1 to 6]
Polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6 The carboxylic acid amide wax (C2) was top-feeded into the twin-screw extruder (manufactured by Werner & Pfleiderer: ZSK57) at the blending amount shown in Table 1, under the conditions of a cylinder set temperature of 290 ° C. and a screw speed of 200 rpm And kneaded to form a strand-like gut, cooled in a cooling bath, and granulated with a cutter to obtain pellets. Using the obtained pellets, various characteristics were examined by the above evaluation method. The results are shown in Table 1.
 [実施例7]
 参考例3に示したポリアミド66樹脂(A4)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表1に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表1に示す。
[Example 7]
Polyamide 66 resin (A4) shown in Reference Example 3, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, carboxylic acid amide system shown in Reference Example 6 The wax (C2) was melt-kneaded in the same amount as shown in Table 1 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 1.
 [実施例8]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表1に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表1に示す。
[Example 8]
Polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6 The carboxylic acid amide wax (C2) was melt kneaded in the same amount as shown in Table 1 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 1.
 [実施例9]
 参考例2に示したポリアミド66/ポリアミド6共重合樹脂(A3)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表1に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表1に示す。
[Example 9]
Polyamide 66 / polyamide 6 copolymer resin (A3) shown in Reference Example 2, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6 The carboxylic acid amide wax (C2) was melt kneaded in the same amount as shown in Table 1 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 1.
 [実施例10~13]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例2に示したポリアミド66/ポリアミド6共重合樹脂(A3)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表2に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表2に示す。
[Examples 10 to 13]
Polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, polyamide 66 / polyamide 6 copolymer resin (A3) shown in Reference Example 2, triazine compound (B) shown in Reference Example 4, reference The higher fatty acid metal salt (C1) shown in Example 5 and the carboxylic acid amide wax (C2) shown in Reference Example 6 were melt-kneaded in the same amount as shown in Table 2 in the same manner as in Example 1, and the same as in Example 1. Pellets were obtained, and various characteristics were examined by the above evaluation method. The results are shown in Table 2.
 [実施例14]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例3に示したポリアミド66樹脂(A4)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表2に示す配合量で実施例1と同様に溶融混練し、ペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表2に示す。
[Example 14]
The polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, the polyamide 66 resin (A4) shown in Reference Example 3, the triazine compound (B) shown in Reference Example 4, and the reference example 5 The higher fatty acid metal salt (C1) and the carboxylic acid amide wax (C2) shown in Reference Example 6 were melted and kneaded in the same manner as in Example 1 with the blending amounts shown in Table 2, to obtain pellets. Various characteristics were investigated. The results are shown in Table 2.
 [比較例1]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例4に示したトリアジン系化合物(B)を表3に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表3に示す。
[Comparative Example 1]
The polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1 and the triazine compound (B) shown in Reference Example 4 were melt-kneaded in the same amounts as in Example 1 in the amounts shown in Table 3. In the same manner as in No. 1, pellets were obtained, and various characteristics were examined by the evaluation method described above. The results are shown in Table 3.
 [比較例2]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)を表3に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表3に示す。
[Comparative Example 2]
The polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, the triazine compound (B) shown in Reference Example 4, and the higher fatty acid metal salt (C1) shown in Reference Example 5 are shown in Table 3. The amount was melt-kneaded in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation method described above. The results are shown in Table 3.
 [比較例3~4]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例4に示したトリアジン系化合物(B)、参考例6に示したカルボン酸アミド系ワックス(C2)を表3に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表3に示す。
[Comparative Examples 3 to 4]
Table 3 shows the polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, the triazine compound (B) shown in Reference Example 4, and the carboxylic acid amide wax (C2) shown in Reference Example 6. The mixture was melt kneaded in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation method described above. The results are shown in Table 3.
 [比較例5~10]
 参考例1に示したポリアミド6/ポリアミド66共重合樹脂(A2)、参考例4に示したトリアジン系化合物(B)、参考例5に示した高級脂肪酸金属塩(C1)、参考例6に示したカルボン酸アミド系ワックス(C2)を表3に示す配合量で実施例1と同様に溶融混練し、実施例1と同様にしてペレットを得て、前記の評価方法によって諸特性を調べた。その結果を表3に示す。
[Comparative Examples 5 to 10]
Polyamide 6 / polyamide 66 copolymer resin (A2) shown in Reference Example 1, triazine compound (B) shown in Reference Example 4, higher fatty acid metal salt (C1) shown in Reference Example 5, shown in Reference Example 6 The carboxylic acid amide wax (C2) was melt kneaded in the same amount as shown in Table 3 in the same manner as in Example 1, pellets were obtained in the same manner as in Example 1, and various characteristics were examined by the evaluation methods described above. The results are shown in Table 3.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
 本発明の難燃性ポリアミド樹脂組成物および成形品は、成形性に優れるとともに、グローワイヤー特性、靭性、難燃性、電気特性に優れるため、電気電子部品、自動車部品、筐体、外装部品、コネクターに好適に使用することができる。 The flame-retardant polyamide resin composition and the molded product of the present invention are excellent in moldability and have excellent glow wire characteristics, toughness, flame retardancy, and electrical characteristics, so that electrical and electronic parts, automobile parts, housings, exterior parts, It can be suitably used for a connector.

Claims (9)

  1.  ポリアミド樹脂(A)と、
     トリアジン系化合物(B)と、
     滑剤(C)と、を含有し、
     前記ポリアミド樹脂(A)、前記トリアジン系化合物(B)、および前記滑剤(C)の配合割合は、前記ポリアミド樹脂(A)100質量部に対して、前記トリアジン系化合物(B)が12~38質量部、前記滑剤(C)が0.1~2.0質量部であり、
     前記滑剤(C)は、高級脂肪酸金属塩(C1)およびカルボン酸アミド系ワックス(C2)を、(C1)/(C2)= 30/70~70/30の質量比で含む難燃性ポリアミド樹脂組成物。
    A polyamide resin (A);
    A triazine compound (B);
    A lubricant (C),
    The blending ratio of the polyamide resin (A), the triazine compound (B), and the lubricant (C) is 12 to 38 for the triazine compound (B) with respect to 100 parts by mass of the polyamide resin (A). Parts by mass, the lubricant (C) is 0.1 to 2.0 parts by mass,
    The lubricant (C) comprises a flame retardant polyamide resin containing a higher fatty acid metal salt (C1) and a carboxylic acid amide wax (C2) in a mass ratio of (C1) / (C2) = 30/70 to 70/30. Composition.
  2.  前記ポリアミド樹脂(A)は、少なくとも2質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上98質量%以下のヘキサメチレンアジパミド単位(a2)を含むポリアミド6/ポリアミド66共重合樹脂(A1)を含む請求項1に記載の難燃性ポリアミド樹脂組成物。 The polyamide resin (A) is a polyamide 6 / polyamide 66 copolymer containing at least 2% by mass to 98% by mass of caproamide units (a1) and 2% by mass to 98% by mass of hexamethylene adipamide units (a2). The flame-retardant polyamide resin composition according to claim 1, comprising a polymerized resin (A1).
  3.  前記ポリアミド樹脂(A)は、少なくとも50質量%以上98質量%以下のカプロアミド単位(a1)および2質量%以上50質量%以下のヘキサメチレンアジパミド単位(a2)を含むポリアミド6/ポリアミド66共重合樹脂(A2)を含む請求項1または2に記載の難燃性ポリアミド樹脂組成物。 The polyamide resin (A) comprises at least 50% by mass to 98% by mass of caproamide units (a1) and 2% by mass to 50% by mass of hexamethylene adipamide units (a2). The flame-retardant polyamide resin composition according to claim 1 or 2, comprising a polymerized resin (A2).
  4.  前記ポリアミド樹脂(A)は、さらに、少なくとも50質量%より多く98質量%以下のヘキサメチレンアジパミド単位(a2)および2質量%以上50質量%より少ないカプロアミド単位(a1)を含むポリアミド66/ポリアミド6共重合樹脂(A3)を含む請求項3に記載の難燃性ポリアミド樹脂組成物。 The polyamide resin (A) is a polyamide 66 / further containing at least more than 50% by mass of hexamethylene adipamide units (a2) and not less than 2% by mass and less than 50% by mass of caproamide units (a1). The flame-retardant polyamide resin composition according to claim 3, comprising a polyamide 6 copolymer resin (A3).
  5.  前記ポリアミド6/ポリアミド66共重合樹脂(A2)とポリアミド66/ポリアミド6共重合樹脂(A3)との質量比が、(A2)/(A3)=15/85~85/15である請求項4に記載の難燃性ポリアミド樹脂組成物。 The mass ratio of the polyamide 6 / polyamide 66 copolymer resin (A2) and the polyamide 66 / polyamide 6 copolymer resin (A3) is (A2) / (A3) = 15/85 to 85/15. The flame-retardant polyamide resin composition described in 1.
  6.  前記ポリアミド樹脂(A)は、さらにポリアミド66樹脂(A4)を含む請求項2~5のいずれか一つに記載の難燃性ポリアミド樹脂組成物。 The flame-retardant polyamide resin composition according to any one of claims 2 to 5, wherein the polyamide resin (A) further contains a polyamide 66 resin (A4).
  7.  前記難燃性ポリアミド樹脂組成物を、シリンダ温度280℃、金型表面温度80℃の条件で射出成形して得られた厚み0.75mm、1.5mm、および3mmの各試験片についての、IEC60695-2-13に準拠した試験におけるグローワイヤー着火温度が825℃以上である請求項1~6のいずれか一つに記載の難燃性ポリアミド樹脂組成物。 IEC60695 for test pieces having thicknesses of 0.75 mm, 1.5 mm, and 3 mm obtained by injection molding of the flame-retardant polyamide resin composition under conditions of a cylinder temperature of 280 ° C. and a mold surface temperature of 80 ° C. The flame retardant polyamide resin composition according to any one of claims 1 to 6, wherein a glow wire ignition temperature in a test based on -2-13 is 825 ° C or higher.
  8.  請求項1~7のいずれか一つに記載の難燃性ポリアミド樹脂組成物を、射出成形、押出成形またはブロー成形により成形してなる成形品。 A molded product obtained by molding the flame retardant polyamide resin composition according to any one of claims 1 to 7 by injection molding, extrusion molding or blow molding.
  9.  前記成形品は、筐体、外装部品またはコネクターである請求項8に記載の成形品。 The molded product according to claim 8, wherein the molded product is a casing, an exterior part, or a connector.
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