JPH11263895A - Resin modifier and thermoplastic resin composition containing same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a resin modifier excellent in antistatic properties by mixing and kneading a copolymer formed from an α-olefin, a maleic diester, and a polyoxyalkylene allyl ether in a specified ratio with a polyolefin modified with a carboxylic acid or anhydride. SOLUTION: A copolymer comprising (A) structural units of formula I, (B) structural units of formula II, and (C) structural units of formula III, the ratio of A:B:C being (10-50):(40-60):(15-40) provided A+B+C is 100, is used. In the formulas, R is a 10-50C (on average) alkyl; R<1> is a 2-10C alkylene; n (on average) is 2-20; and R<2> and R<3> are each a 1-10C alkyl. The copolymer and the modified polyolefin may be chemically bonded to each other. This resin modifier is compounded pref. in an amt. of 5-40 pts.wt. into 100 pts.wt. thermoplastic resin. The wt. average mol.wt. of the copolymer is pref. 1,000-50,000.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading type of a copolymer comprising an .alpha.-olefin, a maleic acid diester and a polyoxyalkylene allyl ether, and a polyolefin modified with a carboxylic acid or a carboxylic anhydride. The present invention relates to a resin modifier and a thermoplastic resin composition containing the same. This includes semiconductors, electronic components such as electronic circuit boards, containers used for storing and transporting various electronic devices and precision devices, packaging materials for packaging these, or clothing, cosmetics, foods, etc. It is excellent in antistatic properties required for containers and packaging materials for preventing dust, containers for storing dangerous substances, and the like.

[0002]

2. Description of the Related Art Thermoplastic resins are excellent in economy, moldability, durability, and light weight, and are therefore used as storage containers, transport containers, packaging materials and the like in a wide range of fields. One of the problems with thermoplastic resins is that they have high electrical resistance and no conductivity. Therefore, friction, impact,
It is easy to generate static electricity by vibration. The generation of static electricity is a serious problem because it causes serious obstacles in some applications. Especially in the field of electronic equipment, etc.
Integrated circuits (ICs) and large-scale integrated circuits (LS
Since I) is damaged or damaged, measures to prevent static electricity in containers for storing and transporting them and packaging materials for packaging these are important themes. In addition, when static electricity is generated, dust is likely to be adsorbed. Therefore, it is required that a packaging material, such as precision equipment or food, which does not like contamination be given an antistatic property.

[0003] As a method for preventing generation of static electricity, a conductive filler such as carbon black is blended into a thermoplastic resin, or an antistatic agent is kneaded to impart conductivity. Is the way. As the conductive filler, metal fibers, metal plated fibers, carbon black, carbon fibers, graphite, tin oxide, zinc oxide, indium oxide, and the like are used. The conductive filler imparts stable and permanent antistatic performance to the resin. However, since the specific gravity of the filler is generally large, the weight of the storage / transport container increases, which is a drawback in handling. In addition, a new problem different from the static electricity problem such as contamination by heavy metal impurities contained in the conductive filler and dust generation due to detachment of the conductive filler may be caused depending on usage. Furthermore, it is desirable that the packaging material is transparent and the inside can be confirmed. However, if a large amount of filler is included in the resin, transparency is often impaired, and characters or pictures are printed or written on the surface of the packaging material. There are also drawbacks that are difficult to remove.

[0004] In the latter countermeasures against static electricity by incorporating an antistatic agent, glycerin fatty acid ester, alkyldiethanolamide, sorbitan fatty acid ester and the like are used as the antistatic agent. Since these antistatic agents have a low molecular weight, they bleed onto the resin surface after kneading and molding to exhibit antistatic performance. However, since the antistatic agent that has bleeded to the resin surface is easily removed by washing or the like, it is difficult to maintain stable and permanent antistatic performance. Further, there may be a problem that the antistatic agent bleeding on the resin surface contaminates electronic components and electronic materials as contents.

In order to solve the problems of the conventional antistatic method as described above, it has been proposed to add a hydrophilic polymer to a thermoplastic resin to impart antistatic performance. For example, JP-A-60-23435 discloses a mixture of a specific polyetheresteramide and a modified vinyl copolymer containing a carboxyl group.
No. 121717 discloses a comb copolymer of a polymer monomer obtained by converting polymethyl methacrylate having a carboxyl group at the end with glycidyl methacrylate and converting a carboxyl group at the end to a methacryloyl group, and an aminoalkyl acrylate or acrylamide; Modified quaternized cations are disclosed in JP-A-4-198308 and JP-A-7-198308.
JP-A-126446 discloses an acrylamide copolymer comprising an ethylene unit, an acrylate unit, and an acrylamide unit.

The thermoplastic resin compositions containing these hydrophilic polymers are lightweight and have stable and permanent antistatic properties, but these hydrophilic polymers have poor compatibility with thermoplastic resins. For this reason, at the time of melt molding, it is easy to take a striped dispersion form elongated in the molding direction. As a result, there are problems such as delamination occurring due to the streaky hydrophilic polymer present near the surface of the molded body, deteriorating the appearance, and reducing the impact resistance of the obtained molded body. Is not satisfactory. In addition, there are still many points to be improved, such as coloring due to thermal decomposition during molding, insufficient transparency, and no writing on the surface.

[0007]

SUMMARY OF THE INVENTION The present invention not only has a stable and permanent antistatic property but also does not bleed on the surface and contaminate the contents unlike conventional antistatic agents. Even when the elongated strip-shaped dispersion form is adopted, the molded article does not cause delamination, and has high mechanical strength and light weight. Therefore, a container used for storing and transporting electronic-related parts and members, and a container for packaging these. A resin modifier excellent in compatibility, which provides a thermoplastic resin composition suitable as a packaging material, and a thermoplastic resin composition excellent in antistatic properties and also improved in terms of transparency and surface writeability The purpose is to provide.

[0008]

The resin modifier according to the present invention comprises the following structural units represented by A, B and C, and A: B: C = 10 to 50: A + B + C = 100.
40 to 60: a copolymer of 15 to 40, and a polyolefin modified with a carboxylic acid or a carboxylic anhydride. The copolymer and the modified polyolefin may be chemically bonded.

[0009]

Embedded image

(Wherein, R is a linear or branched alkyl group having an average carbon number of 10 to 50, R ¹ is a linear or branched alkylene group having an average carbon number of 2 to 10, and n is an average value.) 2-20
, R ² and R ³ are each independently a carbon number of 1 to
In addition, the thermoplastic resin composition according to the present invention contains 5 to 40 parts by weight of the resin modifier based on 100 parts by weight of the thermoplastic resin.

[0011]

DETAILED DESCRIPTION OF THE INVENTION The resin modifier according to the present invention comprises two types of polymers. One polymer has three types of monomers,
That is, α-olefins having an average carbon number of 12 to 52
It is a copolymer obtained by copolymerizing 0 mol%, maleic diester 40 to 60 mol%, and polyoxyalkylene allyl ether 15 to 40 mol% (total mol number is 100%). The weight average molecular weight is usually 1000-5
0000, preferably 2000-30000. The other is a modified product of polyolefin with carboxylic acid or carboxylic anhydride. The polyolefin generally has a molecular weight of 1,000 to 1,000,000, preferably 20
A polyethylene of 100 to 100,000 or polypropylene is used.

As the carboxylic acid used for the modification, maleic anhydride is preferred, but it is also known to be used for graft modification of polyolefins such as acrylic acid, methacrylic acid, crotonic acid, fumaric acid, maleic acid and itaconic acid. Can be used. These carboxylic acids are graft-polymerized to the polyolefin so that the concentration of carboxyl groups (carboxylic anhydride groups are converted into carboxyl groups) in the resulting modified polyolefin is usually 0.1 to 25% by weight. Preferably 1 to
The graft polymerization is carried out so as to be 20% by weight, particularly 5 to 15% by weight. The mixing ratio of the copolymer and the modified polyolefin in the resin modifier of the present invention is usually 20: 1 to 1: 1.
It is. A compounding ratio of 10: 1 to 2: 1, particularly 5: 1 to 2: 1 is preferred.

In the resin modifier of the present invention, the expression of the antistatic ability mainly depends on the copolymer, and the modified polyolefin promotes the dissolution and retention of the copolymer in the resin. it is conceivable that. This indicates that the initial antistatic performance of a resin kneaded with a copolymer alone is good, but the antistatic performance decreases with repeated washing with water, whereas the copolymer and modified polyolefin are mixed. Those used in combination can be confirmed from the fact that the initial performance is maintained even after repeated washing with water.

The resin modifier of the present invention may be prepared by adding a copolymer and a modified polyolefin to a target resin in a predetermined ratio and kneading the copolymer or a copolymer and a modified polyolefin. May be previously blended at a predetermined ratio. A mixture of the two at a predetermined ratio is 50
It is also preferable to carry out heat treatment at a temperature of up to 300 ° C. Thus, it is considered that at least a part of the two reacts to form a chemical bond. For example, a polyoxyalkylene allyl ether, a dialkyl malate and an α-olefin are polymerized in a solvent, a modified polyolefin is added to the reaction product solution, and the mixture is added at 50 to 300 ° C., preferably at 100 to 200 ° C. for 0.5 minute.
After the heat treatment for 10 to 10 hours, the solvent modifier is distilled off to obtain the resin modifier of the present invention. Further, in a solvent, in the presence of a modified polyolefin, a polyoxyalkylene allyl ether, a dialkyl malate and an α-olefin are polymerized, and the solvent is distilled off from the reaction product solution to obtain the resin modifier of the present invention. Can also.

As the polyoxyalkylene allyl ether used in the production of the copolymer, those having 2 to 10 carbon atoms in the oxyalkylene group and having an average number of 2 to 20 are used. Preferably to 1 mol of allyl alcohol,
What added 2-20 mol of ethylene oxide or propylene oxide is used. As the α-olefin, a linear or branched one having an average carbon number of 12 to 52 is used. As the dialkyl malate, one having an alkyl group having 1 to 10 carbon atoms is used.

The polymerization temperature is from 50 to 230 ° C., preferably from 1 to 230 ° C.
00 to 200 ° C. The polymerization time is suitably from 3 to 10 hours. As the polymerization solvent, aromatic hydrocarbons such as toluene, xylene, mesitylene, dibenzyltoluene, n-
Aliphatic hydrocarbons such as hexane and cyclohexane, ketones such as acetone and methyl ethyl ketone, ethers such as tetrahydrofuran and dioxane, halogenated hydrocarbons such as chloroform, and esters such as ethyl acetate are used. Hydrocarbons are particularly preferred. Benzoyl peroxide, di-t-
Organic peroxides such as butyl peroxide and t-butyl peroctoate, and azo compounds such as azobisisobutyronitrile are used. The monomers may be added all at once, but the timing and rate of addition may be appropriately adjusted in consideration of the difference in polymerization rate. The polymerization initiator may be added all at once or dividedly.

The thermoplastic resin to which the resin modifier of the present invention is blended includes, for example, α-olefin polymers such as polyethylene, polypropylene, polybutene and poly-3-methylbutene, ethylene-vinyl acetate copolymer, ethylene Polyolefins such as propylene copolymers and copolymers of olefins with other monomers, polyvinyl chloride, polyvinyl bromide, polyvinyl fluoride, polyvinylidene chloride, chlorinated polyethylene, chlorinated polypropylene, polyvinylidene fluoride, bromine Polyethylene, chloride rubber, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-propylene copolymer, vinyl chloride-styrene copolymer, vinyl chloride-isobutylene copolymer, vinyl chloride- Vinylidene chloride copolymer, vinyl chloride-styrene-anhydride Ynoic acid copolymer, vinyl chloride -
Styrene-acrylonitrile copolymer, vinyl chloride-butadiene copolymer, vinyl chloride-chlorinated propylene copolymer, vinyl chloride-vinylidene chloride-vinyl acetate copolymer, vinyl chloride-acrylate copolymer, vinyl chloride- Maleic acid ester copolymer, vinyl chloride-methacrylic acid ester copolymer, vinyl chloride-acrylonitrile copolymer, halogenated synthetic resin such as internally plasticized polyvinyl chloride, polystyrene, polyvinyl acetate, acrylic resin, styrene and others Monomers (eg, maleic anhydride,
Butadiene, acrylonitrile, etc.), acrylonitrile-butadiene-styrene copolymer, (meth) acrylate-butadiene-styrene copolymer, methacrylate resin such as polymethyl methacrylate, linear polyester, polyamide, polycarbonate, Examples thereof include polyacetal, polyurethane, and polyphenylene oxide. Further, rubbers such as isoprene rubber, butadiene rubber, acrylonitrile-butadiene rubber, and styrene-butadiene rubber, and mixtures of two or more of these rubbers may be used.

The thermoplastic resin composition having excellent antistatic performance of the present invention obtained by blending these resins with the above-mentioned resin modifiers contains an antioxidant, a light stabilizer, a lubricant, Coloring agents such as combustible agents, dispersants, dyes and pigments, inorganic fillers, organic fillers and other commonly used additives can be blended. For example, 0.01 to 1 part by weight of a coloring agent may be blended with 100 parts by weight of the thermoplastic resin composition to obtain a colored molded article according to various uses. In addition, the compounding of the resin modifier not only gives the resin antistatic performance,
Modifies the resin surface to improve paintability and printability. The compounding amount of the resin modifier is preferably 5 to 40 parts by weight based on 100 parts by weight of the resin. When the amount is less than 5 parts by weight, it is difficult to sufficiently exhibit antistatic performance. Also, when the amount is more than 40 parts by weight, the effect is saturated and the mechanical strength is remarkably reduced.

The thermoplastic resin composition of the present invention having excellent antistatic performance is prepared by mixing a resin modifier with a thermoplastic resin in the above-mentioned mixing ratio, and forming a single-screw extruder, a twin-screw extruder, a Banbury mixer, and a roll. It can be manufactured by kneading using a usual kneading machine such as a mixer, Brabender plastograph, kneader blender or the like. Usually, kneading is performed using a twin screw extruder. Kneading temperature (cylinder temperature)
Is generally 150 to 300 ° C., preferably 180 to 280
° C. If the temperature is lower than 150 ° C., the difference in viscosity between the resin modifier and the thermoplastic resin is large, and it is difficult to obtain a uniform composition. Conversely 30
If the temperature exceeds 0 ° C., coloring of the resin modifier may occur. The kneading time is 0.3 to 10 minutes, preferably 0.1 to 10 minutes.
It is 5 to 5 minutes, particularly preferably 1 to 4 minutes. 0.3
If the time is less than minutes, plasticization of the resin modifier becomes insufficient, and it is difficult to obtain a uniform composition. If the time is longer than 10 minutes, the stability of the thermoplastic resin composition may be impaired.

The obtained thermoplastic resin composition can be obtained by various molding methods such as injection molding, extrusion molding, blow molding, inflation molding, T-die molding, vacuum molding, foam molding, etc. Equipment used for storing and transporting various electronic equipment, precision equipment, etc., packaging materials for packaging these, containers and packaging materials to prevent clothing, cosmetics, food, etc. from dust during storage and transportation, and Can be formed in a container or the like for storing dangerous goods or the like.

[0021]

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. Example 1 Production of a resin modifier; Example 1 438 parts by weight of polyoxyethylene allyl ether (average number of oxyethylene = 10), α-olefin (trade name, dialen 30 (α-olefin mixture having 30 or more carbon atoms, average (Carbon number 48), manufactured by Mitsubishi Chemical Corporation) 25
One part by weight and 865 parts by weight of xylene were charged into a flask equipped with a reflux device and a stirrer, and the flask was sufficiently purged with nitrogen gas. While heating to 150 ° C. in a nitrogen gas atmosphere, 180 parts by weight of dimethyl maleate was added in eight divided portions every 30 minutes. In parallel, 105 parts by weight of t-butyl peroxide were added in 14 divided portions every 30 minutes (molar ratio of α-olefin: dimethyl maleate: polyoxyethylene allyl ether = 15: 5).
0:35). After heating for 7 hours in this manner, 217 parts by weight of maleic anhydride-modified polypropylene (trade name, Umex, manufactured by Sanyo Chemical Industries, Ltd.) was added to the flask, and the mixture was further heated for 1 hour. Thereafter, xylene and low-boiling components were distilled off under reduced pressure to obtain a resin modifier. The resulting resin modifier had a melting point of 92-100 ° C., a penetration of 29, and a GP.
The weight average molecular weight by C was 14,000.

Example 2 75 parts by weight of polyoxyethylene allyl ether (average number of added oxyethylene = 10), 67 parts by weight of α-olefin (trade name, dialen 30), 178 parts by weight of xylene, polypropylene modified with maleic anhydride ( 44 parts by weight (trade name, Umex) were charged into a flask equipped with a reflux device and a stirrer, and the flask was sufficiently purged with nitrogen gas. While heating to 150 ° C. in a nitrogen gas atmosphere, 36 parts by weight of dimethyl maleate was added in 30 portions every 8 portions. In parallel, t-butyl peroxide 21
Parts by weight were added in 30 divided portions every 30 minutes (α
-Molar ratio of olefin: dimethyl maleate: polyoxyethylene allyl ether = 20:50:30). After heating in this way for 7 hours, xylene and low boiling components were distilled off under reduced pressure to obtain a resin modifier. The obtained resin modifier had a melting point of 91 to 99 ° C., a penetration of 22, and a weight average molecular weight by GPC of 28,000.

Comparative Example 1 25 parts by weight of polyoxyethylene allyl ether (average number of added oxyethylene = 10), 134 parts by weight of α-olefin (trade name, Dialen 30), 195 parts by weight of xylene, maleic anhydride-modified polypropylene ( 49 parts by weight (trade name, Umex) were charged into a flask equipped with a reflux device and a stirrer, and the flask was sufficiently purged with nitrogen gas. While heating to 150 ° C under a nitrogen gas atmosphere,
36 parts by weight of dimethyl maleate was added in eight portions at intervals of 30 minutes. In parallel, t-butyl peroxide 2
One part by weight was added in 14 divided portions every 30 minutes (molar ratio of α-olefin: dimethyl maleate: polyoxyethylene allyl ether = 40: 50: 10).
After heating in this manner for 7 hours, xylene and low-boiling components were distilled off under reduced pressure to obtain a resin modifier. The obtained resin modifier had a melting point of 90 to 97 ° C., a penetration of 15, and a weight average molecular weight by GPC of 19000.

Comparative Example 2 75 parts by weight of polyoxyethylene allyl ether (average number of added oxyethylene = 10), 67 parts by weight of α-olefin (trade name, dialen 30), and 178 parts by weight of xylene were mixed with a reflux device and a stirrer. The flask was charged into the equipped flask, and the flask was sufficiently replaced with nitrogen gas. While heating to 150 ° C. in a nitrogen gas atmosphere, dimethyl maleate 1
80 parts by weight were added in eight portions every 30 minutes.
In parallel, 105 parts by weight of t-butyl peroxide were dividedly added in 14 portions every 30 minutes (α-olefin:
The molar ratio of dimethyl maleate: polyoxyethylene allyl ether = 20: 50: 30). After heating in this manner for 7 hours, xylene and low-boiling components were distilled off under reduced pressure to obtain a resin modifier. The obtained resin modifier has a melting point of 56.
６１61 ° C., penetration degree 105, weight average molecular weight by GPC was 3,500.

The evaluation of the resin modifier was carried out by melting and kneading a mixture of the thermoplastic resin and the resin modifier in a predetermined amount to form a pellet, and the sample prepared from the pellet was evaluated by the following method. [Evaluation Method] (1) Impact Resistance As the evaluation of impact resistance, a notched Izod impact value (kg · cm / cm ² ) according to ASTM D256 was measured. (2) Conductivity As a conductivity evaluation, a surface resistivity (Ω / □) was measured using a resistance meter (trade name: Hiresta: manufactured by Mitsubishi Chemical Corporation).

(3) Antistatic Performance (After Washing 10 Times) To evaluate the antistatic performance, the sample surface was thoroughly rinsed with ion-exchanged water, moisture was removed with gauze, and the sample was dried with a hot air circulation dryer.
The operation of drying at a temperature of 0 ° C. for 5 hours was repeated 10 times, and then the conductivity was measured. (4) Coatability In order to evaluate the coatability, a urethane-based two-pack paint was applied to a sample, dried and baked, and then a coating test was performed by a cross-cut method using the method of JIS-K5400. . In the test, cuts were made in a grid pattern so that 10 × 10 squares were formed at intervals of 1 mm on the sample coated with the paint using a cutter knife, and the number of squares where the coating film remained out of 100 squares I prepared. (5) Wetting index The wetting index was measured by a method of JIS-K6768 using a formamide-ethylene glycol monomethyl ether mixed solution.

Examples 3-4 and Comparative Examples 3-4 Propylene-ethylene copolymer (ethylene unit content 9% by weight, MFR 10 g / 10 min, Mitsubishi Chemical Corporation)
And BC3) 100 parts by weight of the resin modifier obtained in Example 1 in an amount shown in Table 1 was kneaded using a twin-screw extruder for 1.2 minutes to form pellets. . A sample was prepared from the pellet using an injection molding machine, and was used for evaluation. The results are shown in Table 1.

[0028]

[Table 1]

Examples 5-6 and Comparative Examples 5-6 Polyethylene (density 0.925 g / cm ³ , MFR
2.8g / 10min, LF440, manufactured by Mitsubishi Chemical Corporation
HB) 100 parts by weight of the resin modifier obtained in Example 1 in an amount shown in Table 2 was melt-kneaded for 1.5 minutes using a twin-screw extruder to obtain pellets. Inflation film molding machine (extruder screw diameter 4
0 mm), a film having a thickness of 80 μm was produced from the pellets at a cylinder temperature of 165 ° C. and a residence time of 3.5 minutes. The blow ratio was 1.5. Table 2 shows the evaluation results of this film.

[0030]

[Table 2]

Examples 7 to 8 and Comparative Examples 7 to 9 50 parts by weight of a propylene-ethylene copolymer (content of ethylene unit: 9% by weight, MFR: 10 g / 10 min, BC3, manufactured by Mitsubishi Chemical Corporation) and ethylene: Propylene copolymer (ethylene unit content 70.3% by weight, MF
R 0.7g / 10min, manufactured by Mitsubishi Chemical Corporation, EP0
7P) A mixture obtained by mixing 5 parts by weight of the resin modifier shown in Table 3 with 50 parts by weight was melt-kneaded using a twin-screw extruder for 1.2 minutes to obtain pellets. A sample was prepared from these pellets using a press molding machine and was used for evaluation. The results are shown in Table-3. In Comparative Example 9, no resin modifier was blended.

[0032]

[Table 3]

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI C08L 35:02 23:26) (C08F 222/10 210: 00 216: 18) (72) Inventor Exit Jijio Yokkaichi, Mie Prefecture 1 Tohocho Mitsubishi Chemical Corporation Yokkaichi Office

Claims (7)

[Claims] 1. A: B: C = 1, where A + B + C = 100, consisting of structural units represented by the following A, B, and C:
A copolymer of 0 to 50:40 to 60:15 to 40,
A resin modifier comprising a polyolefin modified with a carboxylic acid or a carboxylic anhydride, and both of which may be chemically bonded. Embedded image (Wherein, R is a linear or branched alkyl group having an average carbon number of 10 to 50, R ¹ is a linear or branched alkylene group having 2 to 10 carbon atoms, n is an average value of 2 to 20) , R ² and R ³ each independently represent an alkyl group having 1 to 10 carbon atoms) 2. The copolymer has a weight average molecular weight of 1,000 to 1,000.
The resin modifier according to claim 1, wherein the resin modifier is 50,000. 3. The weight ratio of the copolymer to the polyolefin modified with carboxylic acid or carboxylic anhydride is 2
The ratio is 0: 1 to 1: 1.
The resin modifier according to the above. 4. A mixture of the copolymer and a polyolefin modified with a carboxylic acid or a carboxylic acid anhydride,
The resin modifier according to any one of claims 1 to 3, wherein the resin modifier is produced by heat treatment at 300 ° C. 5. The resin modifier according to claim 4, which is produced by performing heat treatment in a solvent. 6. The copolymer according to claim 5, wherein the copolymer is A, B in the presence of a polyolefin modified with a carboxylic acid or a carboxylic anhydride.
The resin modifier according to any one of claims 1 to 3, wherein the resin modifier is produced by copolymerizing a monomer giving each of the structural units represented by (C) and (C). 7. The resin modifier according to claim 1, which is present in an amount of 5 to 40 parts by weight per 100 parts by weight of the thermoplastic resin.
A thermoplastic resin composition characterized by being blended by weight.