JPS6295347A - Thermoplastic resin composition - Google Patents

Abstract

PURPOSE:The titled composition comprising the whole components mixed in improved compatibility, having improved mechanical characteristics, molding processing properties and flame retardance, obtained by blending an epoxy group-containing styrene resin with an aromatic (co)polycarbonate having a specific unit. CONSTITUTION:(A) 5-95pts.wt. thermoplastic resin which contains a group selected from carboxyl, hydroxyl and amino group at the end and has 150-300 deg.C melting point is blended with (B) 50-0.01pts.wt. epoxy group-containing styrene resin, (C) 0-90pts.wt. styrene resin containing no epoxy group and (D) 0-90pts. wt. thermoplastic resin having molecular compatibility with the component C to give 100pts.wt. of the blend (total amount of the component C+D is >=5pts. wt.). 100pts.wt. blend is mixed with (E) an aromatic polycarbonate having a unit shown by the formula (X<1> and X<2> are Br or Cl; p and q are 1-4; n is 2-4; r and t are 0.1-20; Y is alkylene, -CO-, etc.,) or an aromatic copolycarbonate containing >=25wt% unit shown by the formula.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a thermoplastic resin composition, and more specifically, thermoplastic resins having poor compatibility are made to be compatible by blending a third component, and both resins are made to be compatible. The object of the present invention is to provide a thermoplastic resin composition which can improve the disadvantages of the invention and provide molded articles having excellent mechanical properties, excellent moldability and flame retardancy.

(Prior Art) Conventionally, many attempts have been made to solve the drawbacks of each thermoplastic resin by blending thermoplastic resins having different properties.

However, different polymers usually have poor compatibility and do not mix uniformly, forming a so-called "sea-island" structure, and this "sea-island" interface is extremely weak, making the resulting composition brittle and mechanically Target strength and impact strength decrease.

Furthermore, there are other disadvantages of resins that have excellent self-extinguishing properties. For example, when different polymers are blended for the purpose of improving molding processability, molding processability is improved, but self-extinguishing properties are impaired. do.

(Problems to be solved by the invention) Polyphenylene ether has mechanical properties, electrical properties,
It is used in many applications as an engineering plastic because it has excellent overall properties such as excellent heat resistance and good dimensional stability, but it has poor moldability and impact resistance. It also has the major drawback of poor chemical resistance. On the other hand, as an engineering plastic with excellent chemical resistance,
Thermoplastic polyester resins (e.g., polyethylene terephthalate, polybutylene terephthalate, etc.) and polyamide resins (e.g., nylon 6, nylon 66, etc.)
There is. The former thermoplastic polyester resin has a high melting point and excellent mechanical strength, but its heat distortion temperature under load is extremely low, so it is usually used as a molding material with a large amount of glass fiber mixed in. . However, thermoplastic polyester resins reinforced with glass fibers have poor surface properties, and orientation of the glass fibers occurs during molding, resulting in extremely large strength anisotropy and shrinkage anisotropy of the molded product. Therefore, the molded product has disadvantages such as warping and deformation.

In order to eliminate these drawbacks of polyphenylene ether and thermoplastic polyester resin, an attempt to melt-mix them has been proposed in Japanese Patent Publication No. 51-21664. However, the resulting compositions exhibit typical incompatible properties because the properties (expressed by, for example, SP value) derived from the molecular structures of the two are significantly different. In other words, the mechanical properties are significantly lower than expected based on both values, and the molded product obtained from this composition is
The appearance is also sad compared to the single one.

On the other hand, in order to improve the fluidity of borifuenylene ether, it was proposed to incorporate polyamide resin into it.
-997, but polyphenylene ether and polyamide have extremely poor compatibility, and the resulting resin composition has a significant decrease in mechanical properties, and no distinctive properties other than improved fluidity can be obtained. Not yet.

Furthermore, since polyphenylene ether resin alone has extremely poor moldability, styrene resin is actually used as an improvement as proposed in Japanese Patent Publication No. 43-17812.

Alternatively, it is used by blending it with various resins to improve moldability. This problem eliminates the drawback that the self-extinguishing property of the polyphenylene ether resin itself is impaired, making it significantly more flammable than polyphenylene ether resin alone, and there is a desire for improved flame retardancy.

(Means for Solving the Problems) In a blend of thermoplastic resins with different properties and poor compatibility, the present inventors made the two compatible by blending a third component, and the excellent As a result of intensive study to improve the shortcomings of both resins without reducing their properties,
A thermoplastic resin (for example, a thermoplastic polyester resin, a polyamide resin, etc.) and an epoxy group-containing styrene resin and/or a thermoplastic resin having molecular compatibility with the styrene resin, and an epoxy group-containing styrene resin as a third component. By blending resin, the compatibility of the entire system is improved, and by using aromatic polycarbonate, preferably a phosphorus compound, it is possible to impart flame retardancy and improve bending strength and heat distortion temperature, making it an excellent product. The inventors have discovered the very interesting fact that a resin composition with excellent performance can be obtained, and have completed the present invention. That is, the present invention is directed to a polymer having a melting point of 150 to 3 and having at least one polar group selected from a carboxyl group, a hydroxyl group, and an amino group at the terminal.
00°C thermoplastic resin (A) 5 to 95 parts by weight, epoxy group-containing styrene resin (B) 0.01 to 50 parts by weight, epoxy group-free styrene resin (C) 0 to 90 parts by weight.
100 parts by weight, and 0 to 90 parts by weight of a thermoplastic resin (D) that has molecular compatibility with the styrene resin (C).
parts by weight, the total amount of (C) and (D) is 5 parts by weight or more, and an aromatic polycarbonate having a repeating unit represented by the following general formula (I) and/or an aromatic polycarbonate represented by the general formula (I). A thermoplastic resin composition characterized by containing an aromatic copolycarbonate (E) containing 25% by weight or more of repeating units; 1. A thermoplastic resin composition comprising one or more phosphorus compounds (F) selected from the group consisting of compounds.

[However, in the formula, x', x': bromine atom and/or chlorine atom p, q: integer from 1 to 4 n: integer from 2 to 4 r+t: integer from 0 or 1 to 20 Y: alkylene group, halogenated Alkylene group, alkylidene group, -〇-1 -CO-, -5-1 -so-, -S - or - (two benzene rings directly bonded) coR, o-P-oR,... ... (II) ■ OR.

R, 0-P-OR, ...... (III) R
1 R,0-P-OR, ...... (IV) (However, in the formula, R1, R2 and R5 each represent the same or different alkyl, haloalkyl, aryl and haloaryl group.) This invention The thermoplastic resin (A) has at least one type of polar group selected from a carboxyl group, a hydroxyl group, and an amino group at the terminal and has a melting point of 15
A thermoplastic resin with a temperature of 0 to 300°C, such as polyethylene terephthalate, polypropylene terephthalate,
polybutylene terephthalate, polychlorohexane dimethylene terephthalate, polyoxyethoxybenzoate, polyethylene naphthalate, the above polyester components and other acid components and/or glycol components, such as isophthalic acid, P-oxybenzoic acid, adipic acid,
Polyesters copolymerized with acid components such as sebacic acid, geltaric acid, diphenylmethanedicarboxylic acid, and dimer acid, and glycol components such as hexamethylene glycol, diethylene glycol, neopentyl glycol, and bisphenol A1 neopentyl glycol alkylene oxide adducts, aromatic Broadly defined polyesters such as polyester/polyether block copolymers, aromatic polyester/polylactone block copolymers, polyarylates, nylon 6, nylon 6.6. nylon 6.9, nylon 6.10, nylon 6.12, nylon 6/6,
6. Polyxylylene adipamide, polyhexamethylene terephthalamide, polyphenylene phthalamide, polyxylylene adipamide/hexamethylene adipamide, polyester amide elastomer, polyether amide elastomer, polyether ester amide elastomer, dimer Polyamides such as acid copolymerized polyamides are exemplified, and resins may be used alone or in blends of multiple resins or copolymers thereof. In particular, polyester resins with a melting point of 200"C or higher are preferable from the viewpoint of heat resistance. Usually, the above polyester resin is a mixed solvent of phenol/tetrachloroethane (6/
4 weight ratio), the intrinsic viscosity measured at 30°C is 0.4.
It is preferably at least 0.5, and particularly preferably at least 0.5. Additionally, polyamide usually has a relative viscosity (
(measured in 98% sulfuric acid according to JISK 6810-1970) is preferably 1.8 or more, and particularly preferably 20 or more.

In addition, as the styrene resin (B) containing an epoxy group in the present invention, glycidyl methacrylate, glycidyl acrylate, vinyl glycidyl ether, allyl glycidyl ether, glycidyl ether of hydroxyalkyl (meth)acrylate, polyalkylene glycol (meth) ) Glycidyl ether of acrylate, polystyrene copolymerized or graft copolymerized with copolymerizable unsaturated monomers containing evoquine groups such as glycidyl itaconate, acrylonitrile-styrene copolymer, styrene-functional butadiene copolymer, etc. Examples include styrene-containing polymers. The content of the epoxy group-containing copolymerizable unsaturated monomer is usually 0.5 to 30% by weight, preferably 1 to 20% by weight, based on the resin (B).

In addition, the styrene resin (C) not containing an epoxy group in the present invention includes homopolymers such as polystyrene, polychlorostyrene, and polyα-methylstyrene, styrene-butadiene copolymers, and styrene-isoprene copolymers. Coalescence, styrene Φ acrylonitrile copolymer, styrene/
Acrylonitrile/acrylate copolymer, styrene/
Acrylonitrile/butadiene copolymer, styrene-butadiene rubber-modified polystyrene, EPDM-based rubber-modified polystyrene, acrylic rubber-modified styrene/acrylonitrile copolymer, styrene/maleic acid copolymer, hydrogenated styrene/butadiene block copolymer, etc. Examples include polystyrene thermoplastic elastomers.

Furthermore, as the thermoplastic resin (D) in the present invention,
Molecular compatibility with styrene resin (C) (compatible on the molecular order, changing the Tg of styrene resin (C)
A specific example is a polyphenylene ether resin. Examples of polyphenylene ether resins include resins having structural units represented by the general formula.

Here, R1, R2, R, and R7 are hydrogen, halogen, hydrocarbon group, substituted hydrocarbon group, cyano group, alkoxy group, phenoxy group, or nitro group, and n indicates the degree of polymerization. Specific examples of R,, Re, R, and R1 include hydrogen, chlorine, bromine, iodine, methyl, ethyl, propyl,
Examples include groups such as allyl, phenyl, benzyl, methylbenzyl, chloromethyl, bromomethyl, cyanethyl, siahamethoxy, ethoxy, phenoxy, and nitro. Specifically, for example, poly-2,6-dimethyl-1.
4-phenylene ether, poly-2+ 6-9 ethyl-
1,4-phenylene ether, poly-2,6-diprobyl-1,4-phenylene ether, poly-2,6-simethoxy 1.4-phenylene ether, poly-2,R3-dichloromethyl-1°4-phenylene ether, Poly-2
,6-') Bromomethyl-1,4-phenylene ether, poly-2,8-diphenyl-1,4-phenylene ether, poly-2,6-dylyl-1,4-phenylene ether, poly-2,6-dichlor -1,4-phenylene ether and poly-2,5-dimethyl-1,4-phenylene ether, poly-2,6-dipendylene 1,4-
Examples include phenylene ether.

A preferred polyphenylene ether resin is a polymer in which R1 and R7 in the general formula have an alkyl group, particularly an alkyl group having 1 to 4 carbon atoms, and n is usually preferably 50 or more.

Component (C) and component (D) may be obtained by polymerizing the monomer of the other component in the presence of the polymer of one of the components.

Furthermore, in the present invention, in order to obtain flame retardance and excellent moldability, it is necessary to contain the component (E), preferably the component (E) and the component (F).

Component (E) in the present invention is usually made by reacting halogenated bisphenol or its alkylene oxide adduct with phosgene or other carbonate precursor, or adding halogen-free dihydric phenols to the above composition.
It can be produced by co-reaction by blending glycols, dibasic acid chloride, phosphorus oxyhalide, phosphorus halide, etc. During the reaction, if desired, an organic alcohol or m phenols may be present to control the degree of polymerization by chain termination reaction. The number of repeating units is 2 or more, preferably 5 to 50, more preferably more than 10 and less than 16. If the number of repeating units is less than 2, the melting point will be low and heat resistance will be reduced, while if the number is too large, uniform blending will be difficult and physical properties will deteriorate.

Next, as the component (F) in the present invention, the general formula (n
) to (IV), and specific examples of compounds represented by general formula (n) include trimethyl phosphate, triethyl phosphate, triphenyl phosphate, tricresyl phosphate, talesyl diphenyl phosphate, diphenyl octyl phosphate. , tributyl phosphate, tris (3-chloroethyl) phosphate, tris (dichloropropyl) phosphate, tris (2,3-dibromopropyl) phosphate,
Examples include tris(bromochloropropyl) phosphate, tris(2-bromoethyl) phosphate, trioctyl phosphate, trypto'xyethyl phosphate, and the like.

Specific examples of the compound represented by the general formula (III) include trimethyl phosphite, triethyl phosphite,
Tris(2-chloroethyl) phosphite, triphenyl phosphite, etc. are available.

Specific examples of compounds represented by general formula (rV) include:
Dimethyl phenylphosphonate, diethyl phenylphosphonate, dibutyl phenylphosphonate, dimethyl benzylphosphonate, diethyl pennylphosphonate, bis(hydroquinoethyl)benzylphosphonate, bis(2-bromoethyl) 2-bromoethylphosphonate, and the like.

The compounds represented by the general formulas (n) to (IV) may be used alone or in combination of two or more.

In the present invention, component (E) or component (E) and component (F) are used as a flame retardant, and in combination with the flame retardant, an antimony compound is further used as a flame retardant aid (component (G)). be able to.

Antimony compounds that can be used include a wide range of inorganic and organic antimony compounds, but in consideration of economic efficiency and effectiveness, inorganic antimony compounds such as antimony trioxide and antimony phosphate, Sb-caproate, and
Organic antimony compounds such as b-polymethylene glycolate and triphenylantimony are preferred, and antimony dioxide is particularly preferred.

In the composition of the present invention, the epoxy group of component (B) and the component (
It is preferred to use a catalyst to improve the affinity with component (A), either by promoting the reactivity with A) or by opening the epoxy group. Although the reaction between component (A) and the epoxy group is effective even without a catalyst, the reaction is significantly accelerated when a catalyst is used. Catalysts generally include aminos, phosphorus compounds, and monocarboxylic and/or dicarboxylic acids having 10 or more carbon atoms in the periodic table of elements I.
It is preferable to mix metal salts of group -a or group II-a. Particularly preferred are trivalent phosphorus compounds such as tributylphosphine and triphenylphosphine, and metal salts of stearic acid such as calcium stearate and sodium stearate. When using these catalysts, they may be used alone or in combination of two or more. Further, the effect remains the same whether the above catalyst is added all at once or divided into parts. The blending amount is not particularly limited, but component (A) 1
The amount is usually 3 parts by weight or less, preferably 0.03 to 2 parts by weight.

The above components (A), (B), (C), (D) and (E)
, (F) can be changed as appropriate depending on desired physical properties, purpose, cost, etc., but usually components (A), (
The total amount of B), (C) and (D) is 100 parts by weight, and component (A) is 5 to 95 parts by weight, preferably 20 to 80 parts by weight.
parts by weight, component (B) is 0.01 to 50 parts by weight, preferably 0.05 to 30 parts by weight, component (C) is 0 to 90 parts by weight, preferably 0 to 75 parts by weight, and component (D) is 0-9
0 parts by weight, preferably 0 to 80 parts by weight, and component (C)
and component (D) in a total amount of 5 parts by weight or more; is contained in an amount of 1 to 30 parts by weight. When component (G) is blended, it is contained in a proportion of 0 to 50% by weight, preferably 0 to 40% by weight, based on component (E).

When further blending component (F), component (E): component (F) = 5/95 to 9515, preferably 20/80 to
80/20, and component (G) is 0 to 50% by weight based on the total amount of component (E) and component (F), preferably 0.
~40% by weight.

If the amount of component (A) added is too small, disadvantages such as decreased chemical resistance may occur, and component (C) and/or (D)
If it is too small, molding shrinkage will increase and the molded product will have sink marks.
This results in warping and deterioration of surface properties. Moreover, when the amount of component (B) is too small, the compatibility between component (A) and component (C) and/or component (D) is poor, resulting in a disadvantage that physical properties are deteriorated. If the amount of component (E) is too small, flame retardancy and moldability will be reduced.

The composition of the present invention may further include ingredients (
A) Crystal nucleating agent such as talc, mica, titanium oxide,
Carbon black etc. and crystallization accelerators, such as component (A
) is an ethylene terephthalate polyester, a polyoxyalkylene compound having compatibility with the polyester, a polyhydric alcohol derivative, a higher fatty acid ester,
Higher fatty acid metal salts, polyvalent carboxylic acid esters, high molecular weight aliphatic polycarboxylic acid salts, polyhydric alcohol esters, etc. may be blended. Usually, the amount of the crystal nucleating agent is up to about 50% by weight based on the composition, and the amount of the crystallization promoter is preferably up to about 10% by weight based on the composition.

In addition, antioxidants, ultraviolet absorbers, stabilizers such as hydrolysis resistance improvers, plasticizers, lubricants, flame retardants, flame retardant aids, antistatic agents, coloring agents, conductivity imparting agents, and sliding properties. Modifiers (solid lubricants, liquid lubricants), polyfunctional crosslinking agents, impact modifiers (e.g. rubbery substances with a Tg of 0°C or lower, preferably 120"C or lower, more preferably containing reactive groups) rubber),
Inorganic fillers other than the above, fibrous reinforcing agents (e.g. glass fiber, carbon fiber, graphite fiber, silicon carbide fiber, silicon nitride fiber, boron nitride fiber, potassium titanate whisker, heat-resistant fiber), imparting electrical conductivity Additives such as metal fibers, polyacetylene fibers, metal powders, iron phosphorus, carbon black, conductive polymers, etc. can also be blended. When blending inorganic fillers and inorganic fibers, silane couplers, titanium couplers, norcoaluminate couplers, etc. may be used in combination.

Additionally, other resins may be blended in amounts and types that do not detract from the objectives of the present invention.

The method for producing the composition of the present invention is not particularly limited, and any method may be used. For example, they can be blended by mechanical kneading using an extruder, roll mill, Banbury Misaki, or the like.

Multi-stage kneading may be used, such as mixing component (A) and component (B) and then kneading other components.

The composition of the present invention can be widely used for molding various molded parts, films, sheet-like objects such as plates, fibrous objects, tubular objects, containers, etc., as well as coating agents, adhesives, sealants, etc. It can also be used as a modifier for other resins. Further, it can be formed into a film, fiber, etc., and further stretch-molded, or a secondary molded product.

(Function) Due to the presence of component (B), the composition of the present invention
is modified, the compatibility of component (A) with component (C) and/or component (D) is improved, a homogeneous blend is obtained, and a molded article with excellent mechanical properties is obtained. A) To solve problems such as sink marks and warpage by reducing molding shrinkage and to provide a molded product with excellent surface properties;
The chemical resistance of component (C) and/or (D) can be improved, and furthermore, by containing component (E) and component (F), flame retardancy and excellent bending properties can be achieved. It has features such as imparting strength.

(Examples) Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

Note that the percentages in the examples are based on weight.

In addition, various measurements in the examples were carried out by the following methods.

(1) Bending test Measured according to ASTM-D790.

■ Heat deformation temperature according to ASTM D-648, length 126 mm, width 12 mm.
6■■, 18.8kg/e on a 8.3m-thick test piece
The temperature of the test piece was raised at a rate of 2°C per minute while a bending stress of J was applied, and the temperature when the amount of deflection reached 0.254 m was determined.

(3) Flame retardant “Te5ts for Flammability”
f Plastic so-called aterrals U L -9
Flame retardancy was evaluated in accordance with 4''.

Synthesis of component (E) Synthesis Example 1 344 parts of tetrabromobisphenol A and p-t
8,000 parts of a 10% aqueous sodium hydroxide solution and 2,000 parts of methylene chloride were added and dissolved in 24 parts of ert-butylphenol, and about 300 parts of phosgene gas was blown into the solution while maintaining the temperature at 5°C and the pH at about 12 (25 parts). After blowing, add 2!5 mQ of 30% triethylamino aqueous solution as a catalyst.
After the reaction, the methylene chloride layer was separated, thoroughly washed with water, and then poured into 10 times the weight of methanol to precipitate the product. After filtration and drying, a white powdery product was obtained. The aromatic polycarbonate thus obtained has an average number of repeating units of 14, a softening point of about 260°C, and a bromine content of 53. It was G%.

Synthesis Example 2 Instead of tetrabromobisphenol A in Synthesis Example 1, 75:25 molar ratio B of tetrabromobisphenol A and bisphenol A, 1 mol of compound, pt
The bromine content was 5! in the same manner as in Synthesis Example 1 except that 0.16 mol of tribromophenol was used instead of ert-butylphenol. , 1%, an aromatic copolycarbonate having a molecular weight of about 8000 and a softening point of about 250°C was obtained.

Synthesis Example 3 An aromatic polycarbonate was obtained in the same manner as in Synthesis Example 1 except that 1 mole of an ethylene oxide adduct of tetrabromobisphenol A (molecular ffi approximately 1000) was used instead of tetrabromobisphenol in Synthesis Example 1.

Examples 1 to 6, Comparative Examples 1 to 4 Polyethylene terephthalate with [η] of 0.63 or polybutylene terephthalate powder with [η] of 1.2, epoxy group-containing styrenic resin, styrene without epoxy group Resin, [η] is 0.58 (in chloroform, 3
Poly-2,6-dimethyl-1,4-phenylene ether (measured at 0°C), aromatic polycarbonate and/or aromatic copolycarbonate shown in Table 1, and predetermined amounts of flame retardant auxiliary were mixed in a blender. Then, the mixture was kneaded and extruded using a 30-mm diameter twin-screw extruder (PCM-30, manufactured by Ikegai Iron Works Co., Ltd.) at a cylinder temperature of 295° C. to form pellets.

The obtained pellets were dried in a vacuum dryer at 120° C. for 5 hours, and then molded into a molded product using an injection molding machine (Metsuki Jushi Kogyo Co., Ltd., model FS-75). At this time, the cylinder temperature was 280°C and the mold temperature was 70°C.

The results are shown in Table 1.

1 in Table 1] Polyethylene terephthalate 2) Styrene copolymer copolymerized with 10 mol% glyphudyl methacrylate 3) High impact polystyrene 4) Poly-2,6-dimethyl-1,4-phenylene ether 5) Prinzyl methacrylate 5 mol % copolymerized styrene copolymer 6) Hydrogenated styrene-butadiene block copolymer strength Prinzyl methacrylate 10 mol% copolymerized acrylonitrile-styrene copolymer 8) Glyphudyl methacrylate 30 mol% copolymerized styrene copolymer Coalescence 9) Polybutylene terephthalate Examples 7 and 9, Comparative Examples 5 and 6 Same as Example 1 except that the polyester in Example 1 was replaced with nylon 6 with a relative viscosity of 2.7, and the cylinder temperature was 260°C. The properties of the molded product were evaluated. The results are shown in Table 2.

As is clear from Tables 1 and 2, the composition of the present invention, which contains an Epoquine-modified styrene resin and a halogen-containing aromatic polycarbonate having a specific structure as a flame retardant, exhibits excellent bending strength and also has excellent flame retardancy. It turns out that it also has sex.

Note that the composition of the present invention was found to have advantages such as excellent chemical resistance.

Examples 10 to 15, Comparative Examples 7 to 10 The same procedures as in Example 1 were carried out except that the phosphorus compounds shown in Table 3 were further blended. The results are shown in Table 3.

Examples 7 to 9, Comparative Examples 5 to 6 Molding was carried out in the same manner as in Example 10, except that the polyester in Example 10 was replaced with nylon 6 with a relative viscosity of 2.7, and the cylinder temperature was set to 2 [iooC]. The characteristics of the product were evaluated. The results are shown in Table 4.

In Table 1, 1) Polyethylene terephthalate 2) Styrene copolymer copolymerized with 30 mol% glyc/dyl methacrylate 3) Hydrogenated styrene-butadiene block copolymer 4) Poly-2,6-dimethyl-1,4-phenylene Ether 5) Triphenyl phosphate 6) Acrylonitrile-styrene copolymer copolymerized with 10 mol% of zolindyl methacrylate 7) High impact polystyrene 8) Styrene copolymerized with 10 mol% of glyc/dyl methacrylate S) Prindyl methacrylate 5 Mol% copolymerized styrene copolymer 10) Polybutylene terephthalate As is clear from Tables 3 and 4, epoxy/modified styrene resin and a phosphorus compound as a flame retardant and a halogen-containing aromatic polycarbonate having a specific structure and a retardant. It can be seen that the composition of the present invention containing a combustion aid exhibits excellent bending strength and also has excellent flame retardancy. Note that this composition was found to have advantages such as excellent chemical resistance.

Claims (2)

[Claims] (1) Contains at least one polar group selected from carboxyl group, hydroxyl group, and amino group at the end and has a melting point of 150
~300°C thermoplastic resin (A) 5 to 95 parts by weight, epoxy group-containing styrene resin (B) 0.01 to 50 parts by weight
Part by weight, epoxy group-free styrene resin (C) 0~
90 parts by weight, and a total of 1 to 90 parts by weight of a thermoplastic resin (D) having molecular compatibility with the styrene resin (C).
00 parts by weight, the total amount of (C) and (D) is 5 parts by weight or more, and an aromatic polycarbonate having a repeating unit represented by the following general formula (I) and/or the general formula (I). A thermoplastic resin composition comprising an aromatic copolycarbonate (E) containing 25% by weight or more of the repeating unit shown. ▲There are mathematical formulas, chemical formulas, tables, etc.▼...[I] [However, in the formula, Integer r, t: 0 or an integer from 1 to 20 Y: alkylene group, halogenated alkylene group, alkylidene group, -O-, -CO-, -S-, -SO-, -SO_2- or -(2 Benzene rings are directly bonded)] (2) Contains at least one polar group selected from carboxyl group, hydroxyl group, and amino group at the end and has a melting point of 150
~300°C thermoplastic resin (A) 5 to 95 parts by weight, epoxy group-containing styrene resin (B) 0.01 to 50 parts by weight
Part by weight, epoxy group-free styrene resin (C) 0~
90 parts by weight, and a total of 1 to 90 parts by weight of a thermoplastic resin (D) having molecular compatibility with the styrene resin (C).
00 parts by weight, the total amount of (C) and (D) is 5 parts by weight or more, and further has an aromatic polycarbonate having a repeating unit represented by the following general formula (I) and/or a general formula (I). An aromatic copolycarbonate (E) containing 25% by weight or more of the following repeating units and one or more phosphorus compounds (F) selected from the group consisting of compounds represented by the following general formulas (II) to (IV). A thermoplastic resin composition comprising: ▲There are mathematical formulas, chemical formulas, tables, etc.▼...[I] However, in the formula, X^1, X^2: Bromine atom and/or chlorine atom p, q: An integer from 1 to 4 n: An integer from 2 to 4 r, t: 0 or an integer from 1 to 20 Y: alkylene group, halogenated alkylene group, alkylidene group, -O-, -CO-, -S-, -SO-, -SO_2- or -(2 benzene Rings are directly bonded] ▲There are mathematical formulas, chemical formulas, tables, etc.▼……(II) ▲There are mathematical formulas, chemical formulas, tables, etc.▼………………(III) ▲There are mathematical formulas, chemical formulas, tables, etc.▼……( IV) (However, in the formula, R_1, R_2 and R_3 each represent the same or different alkyl, haloalkyl, aryl and haloaryl groups.)