Resin composition, method for producing the same, modifier for engineering plastics, engineering plastic composition, and method for producing the same

Abstract

To provide a resin composition which scarcely reduces fire retardancy of an engineering plastic composition to be obtained when used as a modifier of the engineering plastic.SOLUTION: Disclosed is a resin composition which contains: a polymer having an epoxy group; a compound A having a functional group capable of reacting with the epoxy group and a hydroxy group; and a fire retardant including a phosphorus atom. Also disclosed is an engineering plastic composition including the resin composition and the engineering plastic.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a resin composition, a method for producing the same, a modifier for engineering plastics, an engineering plastic composition, and a method for producing the same.

Background Art

[0002] Conventionally, modifiers have been known for blending with engineering plastics to improve or modify various properties of engineering plastics. For example, Patent Document 1 discloses a resin composition comprising (A) 5 to 95 parts by mass of a polyphenylene ether resin or a mixture of the resin and a polystyrene resin, (B) 95 to 5 parts by mass of a saturated polyester, and (C) (a) 100 parts of a polyolefin resin, (b) 0.1 to 30 parts of a compound represented by a predetermined formula, or a modifier composed of the compound and glycidyl methacrylate or glycidyl methacrylate, (c) 0.1 to 500 parts of a vinyl monomer, and (d) 0.001 to 10 parts of a radical polymerization initiator with respect to 100 parts of the total amount of (b) and (c). An aqueous suspension is prepared, (b) and (c) in the aqueous suspension are impregnated into (a), and polymerized to obtain a graft-modified polyolefin resin, and 1 to 100 parts of the graft-modified polyolefin resin with respect to 100 parts of (A) and (B).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When used as a modifier for engineering plastics, the flame retardancy of the resulting engineering plastic composition may be reduced. One aspect of the present invention relates to a resin composition that is difficult to reduce the flame retardancy of the resulting engineering plastic composition.

Means for Solving the Problem

[0005] One aspect of the present invention relates to a resin composition containing a polymer having an epoxy group, a functional group that reacts with the epoxy group, a compound A having a hydroxyl group, and a flame retardant containing a phosphorus atom.

[0006] Another aspect of the present invention relates to a method for producing the above resin composition, which includes melt-kneading a mixture containing a polymer having an epoxy group, compound A, and a flame retardant containing a phosphorus atom.

[0007] Yet another aspect of the present invention relates to a modifier for engineering plastics containing the above resin composition.

[0008] Still another aspect of the present invention relates to an engineering plastic composition containing the above resin composition and an engineering plastic.

[0009] Still another aspect of the present invention relates to a method for producing an engineering plastic composition, which includes melt-kneading a mixture containing the above resin composition and an engineering plastic.

Advantages of the Invention

[0010] According to the present invention, when used as a modifier for engineering plastics, it is possible to provide a resin composition that is difficult to reduce the flame retardancy of the obtained engineering plastic composition.

Embodiments for Carrying Out the Invention

[0011] Hereinafter, some examples of the present invention will be described in detail. However, the present invention is not limited to the following examples.

[0012] An example of the resin composition contains a polymer having an epoxy group, a compound A having a functional group reactive with the epoxy group and a hydroxyl group, and a flame retardant containing a phosphorus atom. This resin composition can be used as a modifier for engineering plastics and the like. Hereinafter, this resin composition may also be referred to as a "resin composition for modification".

[0013] When a resin composition for modification containing a polymer for modification and a flame retardant is melt-kneaded with an engineering plastic, the flame retardancy of the resulting engineering plastic composition is not always sufficient. This is presumably because the flame retardant migrates from the resin composition for modification to the engineering plastic, resulting in a decrease in the flame retardancy of the resin composition for modification itself. On the other hand, a resin composition for modification containing compound A together with a flame retardant containing a phosphorus atom is less likely to reduce the flame retardancy of an engineering plastic. This is presumably because, for example, the flame retardant containing a phosphorus atom is immobilized on the polymer via compound A, thereby suppressing the migration of the flame retardant to the engineering plastic. At least a part of compound A in the resin composition for modification may be bonded to the polymer by the reaction of the functional group reactive with the epoxy group and the epoxy group of the polymer. It is considered that the migration of the flame retardant to the engineering plastic is particularly effectively suppressed by the interaction between the compound A bonded to the polymer and the flame retardant.

[0014] The resin composition for modification contains a polymer having an epoxy group. This polymer is a polymer having at least a monomer unit having an epoxy group. The monomer unit having an epoxy group may be a monomer unit derived from an unsaturated carboxylic acid glycidyl ester, a monomer unit derived from a glycidyl ether having an unsaturated group, or both of them.

[0015] The unsaturated carboxylic acid glycidyl ester may be a compound represented by the following formula (1). In formula (1), R 1represents an alkenyl group having 2 to 18 carbon atoms, and the alkenyl group may have one or more substituents. Examples of the compound represented by the formula (1) include glycidyl acrylate, glycidyl methacrylate, and glycidyl itaconate.

[0016]

Chemical formula

[0017] The glycidyl ether having an unsaturated group may be a compound represented by the following formula (2). In the formula (2), R 2 represents an alkenyl group having 2 to 18 carbon atoms, and the alkenyl group may have one or more substituents. X represents CH2-O (where CH2 is bonded to R 2 ) or an oxygen atom. Examples of the compound represented by the formula (2) include allyl glycidyl ether, 2-methylallyl glycidyl ether, and styrene-p-glycidyl ether.

[0018]

Chemical formula

[0019] The proportion of the monomer unit having an epoxy group may be 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 3% by mass or more, or 5% by mass or more based on the mass of the polymer. The proportion of the monomer unit having an epoxy group may be 30% by mass or less, 20% by mass or less, 15% by mass or less, 10% by mass or less, or 8% by mass or less based on the mass of the polymer. The proportion of the monomer unit having an epoxy group may be 0.1 to 30% by mass, 1 to 15% by mass, or 5 to 8% by mass based on the mass of the polymer.

[0020] The polymer having an epoxy group may be an olefin polymer containing monomer units derived from olefins. The olefins constituting the olefin polymer may be monomer units derived from ethylene, monomer units derived from α-olefins, or a combination thereof. Examples of α-olefins include linear olefins such as 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-tridecene, 1-tetradecene, 1-pentadecene, 1-hexadecene, 1-heptadecene, 1-octadecene, 1-nonadecene, and 1-eicosene; and cyclic olefins such as norbornene, 5-methylnorbornene, 5-ethylnorbornene, 5-propylnorbornene, 5,6-dimethylnorbornene, and 1-methylnorbornene.

[0021] The proportion of monomer units derived from olefins (or the total proportion of monomer units derived from ethylene and monomer units derived from α-olefins) may be 50% by mass or more, 55% by mass or more, 60% by mass or more, or 65% by mass or more based on the mass of the olefin polymer. The proportion of monomer units derived from olefins (or the total proportion of monomer units derived from ethylene and monomer units derived from α-olefins) may be 99.9% by mass or less, 90% by mass or less, 80% by mass or less, or 70% by mass or less based on the mass of the olefin polymer. The proportion of monomer units derived from olefins (or the total proportion of monomer units derived from ethylene and monomer units derived from α-olefins) may be 50 to 99.9% by mass or 60 to 80% by mass based on the mass of the olefin polymer.

[0022] The olefin polymer may be a copolymer further containing other monomer units derived from an ethylenically unsaturated compound in addition to monomer units having an epoxy group and monomer units derived from an olefin. Examples of the ethylenically unsaturated compound that induces other monomer units include α,β-unsaturated carboxylic acid alkyl esters such as methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, and butyl (meth)acrylate; vinyl carboxylates such as vinyl acetate, vinyl propionate, and vinyl butyrate; vinyl ethers such as methyl vinyl ether, ethyl vinyl ether, propyl vinyl ether, and phenyl vinyl ether; and styrene derivatives such as styrene, methyl styrene, and ethyl styrene. "(Meth)acrylate" means acrylate or methacrylate, and the same applies to similar compounds.

[0023] The proportion of other monomer units may be 1% by mass or more, 10% by mass or more, or 20% by mass or more based on the mass of the olefin polymer. The proportion of other monomer units may be 50% by mass or less, 40% by mass or less, or 30% by mass or less based on the mass of the olefin polymer. The proportion of other monomer units may be 1 to 50% by mass or 20 to 30% by mass based on the mass of the olefin polymer.

[0024] The olefin-based polymer may be a copolymer having monomer units derived from ethylene and monomer units derived from glycidyl methacrylate. Examples of the olefin-based polymer include ethylene-glycidyl (meth)acrylate copolymer, ethylene-glycidyl (meth)acrylate-methyl (meth)acrylate copolymer, ethylene-glycidyl (meth)acrylate-ethyl (meth)acrylate copolymer, ethylene-glycidyl (meth)acrylate-normal propyl (meth)acrylate copolymer, ethylene-glycidyl (meth)acrylate-isopropyl (meth)acrylate copolymer, ethylene-glycidyl (meth)acrylate-normal butyl (meth)acrylate copolymer, ethylene-glycidyl (meth)acrylate-isobutyl (meth)acrylate copolymer, and ethylene-glycidyl (meth)acrylate-vinyl acetate copolymer. The olefin-based polymer may be an ethylene-glycidyl (meth)acrylate-methyl (meth)acrylate copolymer.

[0025] The content of the polymer having an epoxy group (or the olefin-based polymer) may be 50% by mass or more, 60% by mass or more, 70% by mass or more, or 75% by mass or more based on the total mass of the resin composition for modification. The content of the polymer having an epoxy group (or the olefin-based polymer) may be 95% by mass or less, 90% by mass or less, 85% by mass or less, 80% by mass or less, or 75% by mass or less based on the total mass of the resin composition for modification. The content of the polymer having an epoxy group (or the olefin-based polymer) may be 50 to 95% by mass or 70 to 80% by mass based on the total mass of the resin composition for modification.

[0026] The resin composition for modification contains a functional group that reacts with an epoxy group (excluding a hydroxyl group), and a compound A having a hydroxyl group. Compound A can be immobilized on the polymer having an epoxy group by reacting with the epoxy group of the polymer having an epoxy group. Compound A usually has a hydroxyl group separately from the functional group that reacts with the epoxy group. This hydroxyl group may be an alcoholic hydroxyl group bonded to a carbon atom of an aliphatic group or a phenolic hydroxyl group.

[0027] Compound A may have at least one selected from the group consisting of a carboxyl group, an amino group, and a thiol group as a functional group that reacts with an epoxy group. The amino group may be a primary amino group, a secondary amino group, or a tertiary amino group. Compound A may have a plurality of functional groups that react with an epoxy group. The number of functional groups that react with an epoxy group in Compound A may be 3 or less, 2 or less, or 1.

[0028] Compound A may have a plurality of hydroxyl groups. From the viewpoint of maintaining the excellent flame retardancy of engineering plastics, the number of hydroxyl groups in Compound A may be 2 or more, and may be 5 or less, 3 or less, or 2 or less.

[0029] Compound A may be at least one selected from the group consisting of hydroxycarboxylic acid having a carboxyl group and a hydroxyl group, hydroxyaminocarboxylic acid having a carboxyl group, an amino group, and a hydroxyl group, and amino alcohol having an amino group and a hydroxyl group. In this specification, hydroxycarboxylic acid having an amino group is classified as hydroxyaminocarboxylic acid.

[0030] Examples of hydroxycarboxylic acids include saturated aliphatic hydroxycarboxylic acids such as glycolic acid, lactic acid, tartronic acid, glyceric acid, hydroxybutyric acid, malic acid, tartaric acid, citramalic acid, citric acid, isocitric acid, leucic acid, dimethylolbutyric acid, mevalonic acid, pantothenic acid, cerebric acid, and quinic acid; unsaturated aliphatic hydroxycarboxylic acids such as ricinoleic acid and shikimic acid; aromatic hydroxycarboxylic acids such as salicylic acid, creosote acid, vanillic acid, syringic acid, resorcylic acid, protocatechuic acid, gentisic acid, orsellinic acid, gallic acid, mandelic acid, benzoic acid, atrolactic acid, meriotric acid, phloretic acid, coumaric acid, umbellic acid, caffeic acid, ferulic acid, and sinapic acid; and heteroarylcarboxylic acids such as 3-hydroxypicolinic acid, 6-hydroxynicotinic acid, citrazinic acid, 2,6-dihydroxynicotinic acid, kynurenic acid, xanthurenic acid, 6-hydroxykynurenic acid, 8-methoxykynurenic acid, 7,8-dihydroxykynurenic acid, and 7,8-dihydro-7,8-dihydroxykynurenic acid. Compound A may be a hydroxycarboxylic acid having a plurality of hydroxyl groups, specifically, it may be at least one selected from the group consisting of glyceric acid, tartaric acid, dimethylolbutyric acid, mevalonic acid, pantothenic acid, quinic acid, shikimic acid, resorcylic acid, protocatechuic acid, gentisic acid, orsellinic acid, gallic acid, umbellic acid, caffeic acid, citrazinic acid, 2,6-dihydroxynicotinic acid, xanthurenic acid, 6-hydroxykynurenic acid, 7,8-dihydroxykynurenic acid, 7,8-dihydro-7, and 8-dihydroxykynurenic acid.

[0031] Examples of hydroxyaminocarboxylic acids having a primary amino group include serine and threonine. Examples of hydroxyaminocarboxylic acids having a tertiary amino group include hydroxyethylethylenediaminetriacetic acid (HEDTA), hydroxyethyliminodiacetic acid (HIDA), dihydroxyethylglycine (DHEG), and 1,3-diamino-2-hydroxypropanetetraacetic acid (DPTA-OH). Compound A may be a hydroxyaminocarboxylic acid having a plurality of hydroxyl groups and a tertiary amino group, specifically, it may be dihydroxyethylglycine.

[0032] Examples of amino alcohols include alkanolamines such as triethanolamine, n-propanolamine, isopropanolamine, neopentanolamine, 4-amino-1-butanol, 5-amino-4-octanol, 2-amino-2-methyl-1-propanol, and 2-phenyl-2-aminoethanol; N-alkylmonoalkanolamines such as N-methylethanolamine, N-ethylethanolamine, N-n-butylethanolamine, N-tert-butylethanolamine, N-ethylbutanolamine, and 3-(methylamino)-1-propanol; N-alkyldialkanolamines such as N-methyldiethanolamine, N-ethyldiethanolamine, N-n-butyldiethanolamine, N-tert-butyldiethanolamine, and N-dodecyldiethanolamine; N-phenyldiethanolamine; N,N-dialkylmonoalkanolamines such as N,N-dimethylethanolamine, N,N-diethylethanolamine, N,N-dibutylethanolamine, N,N-dimethylpropanolamine, N,N-dimethylisopropanolamine, and 2-(dimethylamino)-2-methyl-1-propanol; aminoalkylalkanolamines such as N-(2-aminoethyl)ethanolamine; diethylene glycolamine; aminoalkanediols such as 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 3-(methylamino)-1,2-propanediol, and 3-(dimethylamino)-1,2-propanediol; aromatic ring-containing alkanolamines such as N-benzylethanolamine; and heterocyclic amines such as hydroxyethylpiperazine. Compound A may be an amino alcohol having a plurality of hydroxyl groups, specifically, at least one selected from the group consisting of 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 3-(methylamino)-1,2-propanediol, and 3-(dimethylamino)-1,2-propanediol.

[0033] Compound A may be at least one selected from the group consisting of glyceric acid, tartaric acid, dimethylolbutyric acid, mevalonic acid, pantothenic acid, quinic acid, shikimic acid, resorcylic acid, protocatechuic acid, gentisic acid, orsellinic acid, gallic acid, umbellic acid, caffeic acid, citrazinic acid, 2,6-dihydroxynicotinic acid, xanthurenic acid, 6-hydroxykynurenic acid, 7,8-dihydroxykynurenic acid, 7,8-dihydro-7,8-dihydroxykynurenic acid, dihydroxyethylglycine, 2-amino-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol, 3-(methylamino)-1,2-propanediol, and 3-(dimethylamino)-1,2-propanediol.

[0034] From the viewpoint that the molecular weight of Compound A is likely to react with the flame retardant due to little steric hindrance and is likely to be present in the vicinity of the flame retardant, and from the viewpoint of maintaining the excellent flame retardancy of the engineering plastic, the molecular weight of Compound A may be 1000 g / mol or less, 500 g / mol or less, 300 g / mol or less, or 200 g / mol or less. The molecular weight of Compound A may be 50 g / mol or more or 100 g / mol or more.

[0035] Based on the total mass of the resin composition for modification, the content of Compound A may be 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, or 1.2% by mass or more. Based on the total mass of the resin composition for modification, the content of Compound A may be 10% by mass or less, 5% by mass or less, 3% by mass or less, 2% by mass or less, or 1.5% by mass or less. Based on the total mass of the resin composition for modification, the content of Compound A may be 0.1 to 10% by mass or 1 to 3% by mass.

[0036] The content of Compound A may be 0.1% by mass or more, 0.5% by mass or more, 1% by mass or more, 1.2% by mass or more, or 1.5% by mass or more, based on the total mass of the polymer having an epoxy group, from the viewpoint of maintaining excellent flame retardancy of the engineering plastic. The content of Compound A may be 10% by mass or less, 5% by mass or less, 3% by mass or less, 2.5% by mass or less, or 2% by mass or less, based on the total mass of the polymer having an epoxy group. The content of Compound A may be 0.1 to 10% by mass or 1 to 3% by mass, based on the total mass of the polymer having an epoxy group.

[0037] The resin composition for modification contains a flame retardant containing a phosphorus atom. The flame retardant containing a phosphorus atom can be immobilized on the polymer by reacting with the hydroxyl group of Compound A. The flame retardant is composed of one or more compounds containing a phosphorus atom and may be what is generally referred to as a phosphorus-based flame retardant.

[0038] Examples of the flame retardant containing a phosphorus atom include red phosphorus and phosphate compounds. The flame retardant containing a phosphorus atom may be a phosphate compound. Examples of the phosphate compound include phosphates, polyphosphates, compounds mainly composed of phosphates and / or polyphosphates, etc. The flame retardant containing a phosphorus atom may be used alone or in combination of two or more.

[0039] The phosphate compound may be, for example, a salt formed from orthophosphoric acid or polyphosphoric acid and an amine compound, or a metal salt of phosphoric acid (for example, calcium phosphate and magnesium phosphate).

[0040] The amine compound that forms the phosphate compound can be at least one selected from the group consisting of, for example, melamine, piperazine, N,N,N',N'-tetramethyldiaminomethane, ethylenediamine, N,N'-dimethylethylenediamine, N,N'-diethylethylenediamine, N,N-dimethylethylenediamine, N,N-diethylethylenediamine, N,N,N',N'-tetramethylethylenediamine, N,N,N',N'-diethylethylenediamine, 1,2-propanediamine, 1,3-propanediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, 1,7-diaminoheptane, 1,8-diaminooctane, 1,9-diaminononane, 1,10-diaminodecane, trans-2,5-dimethylpiperazine, 1,4-bis(2-aminoethyl)piperazine, 1,4-bis(3-aminopropyl)piperazine, acetoguanamine, benzoguanamine, acrylguanamine, 2,4-diamino-6-nonyl-1,3,5-triazine, 2,4-diamino-6-hydroxy-1,3,5-triazine, 2-amino-4,6-dihydroxy-1,3,5-triazine, 2,4-diamino-6-methoxy-1,3,5-triazine, 2,4-diamino-6-ethoxy-1,3,5-triazine, 2,4-diamino-6-propoxy-1,3,5-triazine, 2,4-diamino-6-isopropoxy-1,3,5-triazine, 2,4-diamino-6-mercapto-1,3,5-triazine, 2-amino-4,6-dimercapto-1,3,5-triazine, ammeline, phthalodiguanamine, melamine cyanurate, butylenediguanamine, norbornenediguanamine, methylenediguanamine, ethylenedimelamine, trimethylenedimelamine, tetramethylenedimelamine, hexamethylenedimelamine, and 1,3-hexylenedimelamine.

[0041] The flame retardant containing a phosphorus atom may contain at least one phosphate compound selected from the group consisting of melamine pyrophosphate salt, piperazine pyrophosphate salt, ammonium polyphosphate salt, and melamine polyphosphate salt, and may contain melamine polyphosphate salt.

[0042] Examples of commercially available flame retardants containing phosphorus atoms include "FP-2500s" and "Adekastab FP-2100J" manufactured by ADEKA Corporation, "Melapur200 / 70" manufactured by BASF Japan Ltd., and "EXOLIT AP422" and "EXOLIT AP462" manufactured by Clariant Japan Ltd.

[0043] The content of the flame retardant containing phosphorus atoms may be 1% by mass or more, 10% by mass or more, 15% by mass or more, or 20% by mass or more based on the total mass of the resin composition for modification. The flame retardant containing phosphorus atoms may be 40% by mass or less, 30% by mass or less, 25% by mass or less, or 20% by mass or less based on the total mass of the resin composition for modification. The content of the flame retardant containing phosphorus atoms may be 1 to 40% by mass or 10 to 25% by mass based on the total mass of the resin composition for modification.

[0044] The resin composition for modification may further contain additives such as compatibilizers, antioxidants, heat stabilizers, ultraviolet absorbers, anti-coloring agents, plasticizers, flame retardants (excluding the flame retardant containing phosphorus atoms), plasticizers, mold release agents, antistatic agents, and coloring agents.

[0045] From the viewpoint of maintaining excellent flame retardancy of the engineering plastic composition, the oxygen index of the resin composition for modification may be 28% or more or 29% or more. The oxygen index can be measured by the method described in the examples below.

[0046] The resin composition for modification can be obtained, for example, by a method including melt-kneading a mixture containing a polymer having an epoxy group, Compound A, and a flame retardant. Melt-kneading the mixture containing a polymer having an epoxy group, Compound A, and a flame retardant may include melt-kneading a mixture containing a polymer having an epoxy group and Compound A to form an intermediate melt-kneaded product, and melt-kneading a mixture containing the intermediate melt-kneaded product and a flame retardant to form the resin composition for modification. By a method passing through the formation of an intermediate melt-kneaded product containing a polymer having an epoxy group and Compound A, the flame retardant can be more efficiently immobilized on the polymer. When the flame retardant is immobilized on the polymer, the flame retardancy of the engineering plastic composition can be further improved.

[0047] Melt-kneading can be carried out, for example, using a twin-screw kneader or a lab plastomill. Examples of the twin-screw kneader include a co-rotating twin-screw extruder.

[0048] The maximum temperature of the mixture to be melt-kneaded may be 50 to 350 °C, 80 to 320 °C, 100 to 300 °C, 120 to 280 °C, or 150 to 250 °C.

[0049] The kneading time of the melt-kneading may be 1 second to 1800 seconds, 10 seconds to 1200 seconds, or 30 seconds to 600 seconds.

[0050] The resin composition for modification can be used, for example, as a modifier for engineering plastics to improve various properties (such as impact resistance) of engineering plastics. The engineering plastic composition containing an engineering plastic and the resin composition for modification can be obtained, for example, by a method including melt-kneading a mixture containing the resin composition for modification and the engineering plastic. The engineering plastic composition may include a continuous phase containing an engineering plastic and particles containing a polymer having an epoxy group dispersed in the continuous phase.

[0051] Engineering plastics refer to plastics with a heat distortion temperature measured according to the ASTM D648 standard of 100 °C or higher, a tensile strength measured according to the ASTM D638 standard of 50 MPa, and a flexural modulus measured according to the ASTM D790 standard of 2.4 GPa or higher. Plastics with a heat resistance of 150 °C or higher are called special engineering plastics or super engineering plastics. In this specification, special engineering plastics and super engineering plastics are also included in engineering plastics.

[0052] Examples of engineering plastics include polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polycarbonate, polyethylene terephthalate, liquid crystal polymer, polyethersulfone, polyamide, polyphthalamide, polyketone, polyether ketone, polyether ether ketone, polyacetal, and polysulfone.

[0053] The engineering plastic composition may further contain other components such as fillers, antioxidants, heat stabilizers, ultraviolet absorbers, anti-coloring agents, plasticizers, flame retardants, plasticizers, mold release agents, antistatic agents, and coloring agents, which are added separately from the resin composition for modification.

[0054] The content of the resin composition for modification may be 10% by mass or more, 15% by mass or more, or 20% by mass or more based on the total mass of the engineering plastic composition. The content of the resin composition for modification may be 50% by mass or less, 40% by mass or less, or 30% by mass or less based on the total mass of the engineering plastic composition. The content of the resin composition for modification may be 10 to 50% by mass based on the total mass of the engineering plastic composition.

[0055] The content of the engineering plastic may be 50% by mass or more, 60% by mass or more, 70% by mass or more, or 80% by mass or more based on the total mass of the engineering plastic composition. The content of the engineering plastic may be 90% by mass or less, 85% by mass or less, or 80% by mass or less based on the total mass of the engineering plastic composition. The content of the engineering plastic may be 50 to 90% by mass based on the total mass of the engineering plastic composition.

Examples

[0056] Hereinafter, the invention will be specifically described based on examples. However, the present invention is not limited to the following examples.

[0057] 1. Materials and Equipment (A) Polymer having an epoxy group · E-GMA: Ethylene-methyl acrylate-glycidyl methacrylate copolymer (manufactured by Sumitomo Chemical Co., Ltd., trade name: Bondfast 7M, ethylene unit content: 67% by mass, glycidyl methacrylate unit content: 6% by mass, methyl acrylate unit content: 27% by mass) (B) Compound A · DHEG: N,N-Dihydroxyethylglycine (manufactured by Tokyo Chemical Industry Co., Ltd., concentration: >99.0%, molecular weight: 163.17 g / mol) (C) Flame retardant containing a phosphorus atom · FP-2500s (trade name): Flame retardant containing a phosphate compound and zinc oxide (manufactured by ADEKA Corporation) · Melapur 200 / 70 (trade name): Melamine polyphosphate (manufactured by BASF Japan Ltd.) (Engineering plastic) · Polyphenylene sulfide (PPS): M2888 (trade name), manufactured by Toray Industries, Inc. (Laboplast mill) Manufactured by Toyo Seiki Seisakusho, Ltd., model 4C150 (trade name) (Vacuum press machine) Manufactured by Imoto Seisakusho Co., Ltd., Model IMC-19E6 (product name)

[0058] 2. Preparation of Resin Composition and Its Molded Body (Example 1) Into the inlet of a lab plastomill, 98.4 parts by mass of E-GMA and 1.6 parts by mass of DHEG were charged, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and for 5 minutes to obtain an intermediate melt-kneaded product.

[0059] 75 parts by mass of the prepared intermediate melt-kneaded product and 25 parts by mass of FP-2500s were charged into the inlet of a lab plastomill, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and for 5 minutes to obtain a resin composition.

[0060] The obtained resin composition was formed into a sheet-like molded body by pressurizing for 10 minutes while heating to 190 °C using a vacuum press. Then, the molded body was cooled at 30 °C for 5 minutes. The thickness of the molded body was 3.0 mm.

[0061] (Comparative Example 1) Into the inlet of a lab plastomill, 75 parts by mass of E-GMA and 25 parts by mass of FP-2500s were charged, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and for 5 minutes to obtain a resin composition. The obtained resin composition was molded in the same manner as in Example 1 to produce a sheet-like molded body.

[0062] (Comparative Example 2) E-GMA was molded in the same manner as in Example 1 to produce a sheet-like molded body.

[0063] (Comparative Example 3) Into the inlet of a lab plastomill, 98.4 parts by mass of E-GMA and 1.6 parts by mass of DHEG were charged, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and for 5 minutes to obtain a resin composition. The obtained resin composition was molded in the same manner as in Example 1 to produce a sheet-like molded body.

[0064] 3. Preparation of Engineering Plastic Composition and Its Molded Body (Example 2) Into the inlet of a lab plastomill, 98.4 parts by mass of BF-7M and 1.6 parts by mass of DHEG were charged, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and 5 minutes to obtain an intermediate melt-kneaded product. 75 parts by mass of the prepared intermediate melt-kneaded product and 25 parts by mass of Melapur200 / 70 were charged into the inlet of the lab plastomill, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and 5 minutes to obtain a resin composition.

[0065] 20 parts by mass of the obtained resin composition, 80 parts by mass of polyphenylene sulfide (PPS), and were charged into the inlet of a lab plastomill, and these mixtures were kneaded under the conditions of 320 °C, 80 revolutions per minute, and 5 minutes to obtain an engineering plastic composition containing PPS.

[0066] The obtained engineering plastic composition was formed into a sheet-like molded body by pressurizing for 10 minutes while heating to 190 °C using a vacuum press machine. Then, the molded body was cooled at 30 °C for 5 minutes. The thickness of the molded body was 3.0 mm.

[0067] (Comparative Example 4) Into the inlet of a lab plastomill, 75 parts by mass of E-GMA and 25 parts by mass of Melapur200 / 70 were charged, and these mixtures were melt-kneaded under the conditions of 190 °C, 80 revolutions per minute, and 5 minutes to obtain a resin composition. 20 parts by mass of the obtained resin composition and 80 parts by mass of polyphenylene sulfide (PPS) were charged into the inlet of the lab plastomill, and these mixtures were kneaded under the conditions of 320 °C, 80 revolutions per minute, and 5 minutes to obtain an engineering plastic composition containing PPS. The obtained engineering plastic composition was molded in the same manner as in Example 2 to produce a sheet-like molded body.

[0068] (Comparative Example 5) 20 parts by mass of E-GMA and 80 parts by mass of polyphenylene sulfide (PPS) were charged into the inlet of a lab plastomill, and these mixtures were kneaded under the conditions of 320 °C, 80 revolutions per minute, and 5 minutes to obtain an engineering plastic composition containing PPS. The obtained engineering plastic composition was molded in the same manner as in Example 2 to produce a sheet-shaped molded body.

[0069] 4. Evaluation Test pieces with a length of 120 mm, a width of 6.5 mm, and a thickness of 3.0 mm were cut out from each of the produced molded bodies. The oxygen index of the test pieces was measured by a method in accordance with JIS K 7201-2 using an oxygen index measuring device (ON-1) manufactured by Suga Test Instruments Co., Ltd. The measurement results are shown in Table 1 and Table 2.

[0070]

Table 1

[0071]

Table 2

Claims

1. A polymer having an epoxy group, a compound A having a functional group reactive with an epoxy group and a hydroxyl group, a flame retardant containing a phosphorus atom, and a resin composition, wherein the flame retardant contains a phosphate compound.

2. The resin composition according to claim 1, wherein the polymer is an olefin-based polymer.

3. The resin composition according to claim 2, wherein the olefin-based polymer is a copolymer having a monomer unit derived from ethylene and a monomer unit derived from glycidyl methacrylate.

4. The resin composition according to any one of claims 1 to 3, wherein the functional group is a carboxyl group.

5. The resin composition according to any one of claims 1 to 4, wherein the molecular weight of the compound A is 1000 g / mol or less.

6. The resin composition according to any one of claims 1 to 5, which is a modifier for engineering plastics.

7. A method for producing the resin composition according to any one of claims 1 to 6, which contains a polymer having an epoxy group, a compound A having a functional group reactive with an epoxy group and a hydroxyl group, and a flame retardant containing a compound containing a phosphorus atom, the method comprising: melting and kneading a mixture containing the polymer, the compound A, and the flame retardant.

8. Melting and kneading the mixture containing the polymer, the compound A, and the flame retardant includes: melting and kneading a mixture containing the polymer and the compound A to form an intermediate melt-kneaded product; and melting and kneading a mixture containing the intermediate melt-kneaded product and the flame retardant to form the resin composition. The method according to claim 7, including the above steps.

9. An engineering plastic composition comprising: the resin composition according to any one of claims 1 to 5; and an engineering plastic.

10. The engineering plastic composition according to claim 9, wherein the engineering plastic composition is a melt-kneaded product of a mixture containing the resin composition and the engineering plastic.

11. A method for producing an engineering plastic composition, which includes melting and kneading a mixture containing the resin composition according to any one of claims 1 to 5 and an engineering plastic.

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