JP3207563B2 - Glass fiber blended resin composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass fiber-containing resin composition having excellent processability.

[0002]

2. Description of the Related Art Rubber-reinforced styrene resins represented by ABS resin (acrylonitrile-butadiene rubber-styrene), AES resin (acrylonitrile-ethylene propylene rubber-styrene), etc., have good moldability and impact strength. It has excellent balance and appearance of molded products, and is widely used as a material for automobile parts, electric products, office equipment and the like.

[0003] Among these application fields, in particular, there is a demand for better heat resistance and rigidity in the base material of an instrument panel, a roll bearing in a copying machine, a chassis, and the like.

For this reason, a glass fiber reinforced resin composition comprising a rubber reinforced styrene resin mixed with a maleic anhydride copolymer and glass fibers or an N-phenylmaleimide copolymer and glass fibers has been proposed. ing.

However, the conventional glass fiber reinforced resin composition has the problem that the heat resistance and the rigidity are improved, but the tapping strength, the impact strength, and the workability are significantly reduced.

[0006]

Means for Solving the Problems As a result of intensive studies on the above problems, the present inventors have found that a rubber-reinforced styrene resin composition containing an N-phenylmaleimide copolymer and glass fiber is further added. It has been found that by blending a specific amount of hydrogenated styrene-butadiene block rubber (SEBS), a resin composition having excellent strength and processability can be obtained without sacrificing the characteristics of the resin composition. Reached.

That is, the present invention relates to (A) 10 to 60% by weight of a terpolymer obtained by polymerizing 10 to 30% by weight of N-phenylmaleimide, 45 to 85% by weight of styrene and 5 to 25% by weight of acrylonitrile. , (B) conjugated diene system
Rubber (i), ethylene-propylene rubber (ii),
70 to 90% by weight of butylene and 30 to 10% by weight of butylene
% Ethylene-butylene rubber (iii)
20 to 70% by weight of a rubber component and styrene 25 to 60
5% by weight of acrylonitrile and 5 to 20% by weight of acrylonitrile, (C) a binary copolymer 10 obtained by polymerizing 50 to 80% by weight of styrene and 20 to 50% by weight of acrylonitrile. (E) hydrogenated styrene-butadiene block rubber per 100 parts by weight of a resin composition consisting of -80% by weight and (D) 5 to 35% by weight of glass fibers and satisfying the following conditions (A to D ): An object of the present invention is to provide a glass fiber-blended resin composition characterized by blending 0.05 to 5 parts by weight. (A) Intrinsic viscosity of terpolymer = 0.20 to 0.7
0. (B) Intrinsic viscosity of the binary copolymer = 0.40 to 1.0
0. (C) Intrinsic viscosity of ternary copolymer ≦ intrinsic viscosity of binary copolymer. (D) Styrene content in binary copolymer-styrene content in ternary copolymer = +20 to -5.

Hereinafter, the glass fiber-containing resin composition of the present invention will be described in detail.

The terpolymer (A) is 10 to 30% by weight of N-phenylmaleimide and 45 to 85% by weight of styrene.
And a terpolymer obtained by polymerizing 5 to 25% by weight of acrylonitrile.

If the content of N-phenylmaleimide is less than 10% by weight, the heat resistance is unfavorable. On the other hand, if the styrene content is less than 45% by weight, the workability is unfavorable, whereas if it exceeds 85% by weight, the heat resistance is inferior. On the other hand, if the acrylonitrile content is less than 5% by weight, the tapping strength exceeds 25% by weight.
Particularly preferred is a terpolymer comprising 20 to 30% by weight of N-phenylmaleimide, 60 to 70% by weight of styrene and 10 to 20% by weight of acrylonitrile.

The terpolymer (A) can be prepared by a known polymerization method,
That is, it can be produced by a method of emulsion polymerization, bulk polymerization, suspension polymerization, solution polymerization and a combination thereof. The order of addition of each compound to the reaction system and the method of addition are not particularly limited, and any order or method (collective, continuous, divided, etc.) can be adopted.

In the terpolymer (A), not only the composition ratio but also the intrinsic viscosity (30 ° C., dimethylformamide)
Is important [condition a] and its range is 0.20 to 0.7
0. If the intrinsic viscosity is less than 0.20, the tapping strength and impact resistance are unfavorable, and if the intrinsic viscosity exceeds 0.70, the processability is inferior. Particularly preferably, the intrinsic viscosity is 0.30 to 0.40.
It is.

The intrinsic viscosity can be adjusted by appropriately changing the polymerization conditions. For example, a terpolymer having a desired intrinsic viscosity can be obtained by changing the polymerization composition, the polymerization temperature, and the types and amounts of the initiator and the molecular weight regulator.

The graft polymer (B) is a conjugated diene-based
Rubber (i), ethylene-propylene rubber (ii),
70 to 90% by weight of butylene and 30 to 10% by weight of butylene
% Ethylene-butylene rubber (iii)
20 to 70% by weight of a rubber component , and 25 to 60% of styrene.
% Of acrylonitrile and 5 to 40% by weight of acrylonitrile.

Examples of the conjugated diene rubber (i) constituting the graft polymer (B) include polybutadiene, butadiene-styrene rubber, butadiene-acrylonitrile rubber and the like. These rubbers are emulsion polymerization, solution polymerization,
It can be produced by suspension polymerization, bulk polymerization or the like.

Further, an ethylene-propylene rubber (i
As i), non-conjugated diene compounds such as ethylene-propylene rubber, dicyclopentadiene, ethylidene norbornene, 1.4-hexadiene, 1.4-cycloheptadiene and 1.5-cyclooctadiene are copolymerized. Ethylene-propylene-nonconjugated diene rubber. These rubbers can be produced by solution polymerization or the like.

The molar ratio of ethylene to propylene in the ethylene-propylene rubber is preferably in the range from 5: 1 to 1: 3. Also, ethylene-propylene-
The non-conjugated diene rubber preferably has a non-conjugated diene ratio in the range of 2 to 50 in terms of iodine value.

Further, ethylene-butylene rubber (ii)
i) means 70 to 90 % by weight of ethylene and 30 to
It is a rubber composed of 10 % by weight, particularly preferably an amorphous or low-crystalline rubber composed of 80 to 90 % by weight of ethylene and 20 to 10 % by weight of butylene. Such a rubber can be produced by solution polymerization (Ziegler method) or the like. The molecular weight of the ethylene-butylene rubber is not particularly limited, but may be a melt flow rate (MFR).
(ASTM D-1238, 230 ° C) 0.1 to 10
It is preferably 0 g / 10 minutes.

The structure of the graft polymer (B) is not limited, but the graft ratio is 20 to 100% and the weight average particle size is
Particularly preferred is a graft polymer of 0.05-5 μm.

If the rubber component is less than 20% by weight, the impact resistance will be poor, and if it exceeds 70% by weight, the processability, appearance and anisotropy will be inferior. On the other hand, if the amount of styrene is less than 25% by weight, the appearance and anisotropy are unfavorable. If the content of acrylonitrile is less than 5% by weight, the appearance and anisotropy are unfavorable. Particularly preferred is a graft polymer comprising 30 to 60% by weight of a rubber component, 30 to 55% by weight of styrene, and 10 to 30% by weight of acrylonitrile.

The graft polymer can be produced by known polymerization methods, that is, emulsion polymerization, bulk polymerization, suspension polymerization, solution polymerization and a combination thereof. Generally, it is obtained by polymerizing styrene and acrylonitrile in the presence of rubber. The order of addition and the method of adding styrene and acrylonitrile to the reaction system are not particularly limited, and any order or method (batch, continuous, divided, etc.) can be adopted.

The binary copolymer (C) refers to styrene 50 to 50.
It is a binary copolymer obtained by polymerizing 80% by weight and 20 to 50% by weight of acrylonitrile.

If styrene is less than 50% by weight (acrylonitrile exceeds 50% by weight), if the workability exceeds 80% by weight (acrylonitrile is less than 20% by weight), heat resistance is inferior. Particularly preferably, styrene 60 to 7
It is a binary copolymer consisting of 5% by weight and 25-40% by weight of acrylonitrile.

The binary copolymer (C) can be prepared by a known polymerization method,
That is, it can be produced by a method of emulsion polymerization, bulk polymerization, suspension polymerization, solution polymerization and a combination thereof. The order of addition of these compounds to the reaction system and the method of addition are not particularly limited, and any order or method (collective, continuous, divided, etc.) can be adopted.

In the binary copolymer (C), as with the terpolymer, not only the composition ratio but also the intrinsic viscosity (30 ° C., dimethylformamide) is important [condition b]. 40 to 1.00. If the intrinsic viscosity is less than 0.40, the tapping strength and the impact resistance are more than 1.00. Particularly preferred is an intrinsic viscosity of 0.55 to 0.80.

The intrinsic viscosity can be adjusted by appropriately changing the polymerization conditions. For example, a binary copolymer having an intended intrinsic viscosity can be obtained by changing the polymerization composition, the polymerization temperature, and the types and amounts of the initiator and the molecular weight modifier.

As the glass fiber (D), not only single fiber but also single fiber may be used as an organic chromic acid compound (such as methacrylate chromic chloride) or an organic silane compound (vinyltriethoxysilane, γ-crysidoxy). Propyl-tripyltri-methoxysilane, β- (3,4 epoxycyclohexyl) -ethyltrimethoxysilane, etc.)
The fibers that have been surface-treated with, a surface-treated or untreated fiber are converted into a known sizing agent (vinyl acetate resin, urethane resin,
A fiber treated with an epoxy resin, a polyester resin, etc.), and further, a glass fiber previously coated with at least one of the above-mentioned polymers (A), (B) and (C). You can also.

The fiber length and the fiber diameter of the glass fiber include:
Although there is no particular limitation, it can be arbitrarily selected, but glass fibers having a fiber length of 3 to 10 mm and a fiber diameter of 3 to 100 μm are preferable from the viewpoint of the balance of physical properties of the final composition, particularly, rigidity, tapping strength and workability.

The composition of the present invention comprises the above-mentioned polymers (A), (B) and (C) and glass fiber (D).
And the composition ratio, that is, the composition ratio, of the terpolymer (A) is 10 to 60% by weight, the graft polymer (B) is 5 to 20% by weight, and the binary copolymer (C) is 10 to 10% by weight.
80% by weight and 5 to 35% by weight of glass fiber (D).

If the amount of the terpolymer is less than 10% by weight, the heat resistance is poor, and if it exceeds 60% by weight, the processability is inferior. If the amount of the graft polymer is less than 5% by weight, the impact resistance is unfavorable. If the amount of the binary copolymer is less than 10% by weight, the workability is poor. If the amount exceeds 80% by weight, the impact resistance and the heat resistance are inferior. Further, when the glass fiber content is less than 5% by weight, the rigidity is increased, and when it exceeds 35% by weight, the workability is deteriorated, which is not preferable.

Particularly preferably, the terpolymer has 20 to 4 terpolymers.
0% by weight, 5 to 15% by weight of graft polymer (B), 25 to 60% by weight of binary copolymer, and 10 to 15 of glass fiber
% By weight.

In the composition of the present invention, not only the respective component ratios described above, but also the intrinsic viscosity of the terpolymer (A) is equal to or less than the intrinsic viscosity of the binary copolymer (C) (A). And the styrene content in the terpolymer (C) is 20% by weight as compared with the styrene content in the terpolymer (A). It is important that not more than 5% by weight, and not more than 5% by weight (styrene amount of C−styrene amount of A = plus 20 to minus 5) [condition d].

When the intrinsic viscosity of the terpolymer exceeds the intrinsic viscosity of the binary copolymer, the tapping strength and the impact resistance or processability are poor. Particularly preferably, a combination of a ternary copolymer having an intrinsic viscosity of 0.30 to 0.40 and a binary copolymer having an intrinsic viscosity of 0.55 to 0.80 as described above is preferable.

When the styrene content of the terpolymer is higher than the styrene content of the terpolymer by more than 20% by weight, heat resistance, tapping strength and impact strength are inferior. %, The heat resistance, the tapping strength and the impact strength are not preferred. Particularly preferably, the styrene content of the binary copolymer-the styrene content of the ternary copolymer = plus 15 to minus 0.

The resin composition of the present invention comprises a hydrogenated styrene-butadiene block rubber (E) per 100 parts by weight of a composition comprising the above-mentioned polymers (A), (B), (C) and glass fiber (D). ) A resin composition containing 0.05 to 5 parts by weight. If it is less than 0.05 part by weight, there is no effect of improving workability, while if it exceeds 5 parts by weight, heat resistance and rigidity are reduced. Preferably, it is 0.1 to 5 parts by weight of the hydrogenated styrene-butadiene block rubber (E).

The hydrogenated styrene-butadiene block rubber used in the resin composition of the present invention is a rubber obtained by hydrogenating a styrene-butadiene block rubber. The composition of the styrene-butadiene block rubber is not particularly limited, but a block rubber composed of 10 to 90% by weight of styrene and 90 to 10% by weight of butadiene is preferred.

There are no particular restrictions on the block type.
AB type of styrene polymer-butadiene polymer block,
ABA type of a styrene polymer-butadiene polymer-styrene polymer block may, for example, be mentioned. The method for producing the styrene-butadiene block rubber is not limited at all, and it can be produced by a known method described in Japanese Patent Publication No. 40-23798 (using a lithium catalyst).

The method of hydrogenation is not particularly limited.
It can be carried out by a known method such as JP-B-42-8704, JP-B-43-6636, JP-A-59-133203, JP-A-60-79005 and the like. Generally, hydrogenated styrene-butadiene block rubber is SEBS (styrene-
Ethylene-butadiene-styrene) is also commercially available.

The resin composition of the present invention is produced by mixing the above-mentioned polymer, glass fiber and hydrogenated styrene-butadiene block rubber by using a known mixing device, for example, a Banbury mixer, a roll, an extruder or the like. can do.

The order of mixing the polymer (A, B, C), glass fiber and hydrogenated styrene-butadiene block rubber and the form thereof are not limited.
Examples include a method of simultaneously mixing all components in the form of beads, powder, and the like, a method of mixing components remaining after pre-mixing specific components, and a method of adding and mixing components remaining during mixing of specific components (in a molten state). .

Further, in producing the resin composition of the present invention, if necessary, antioxidants, ultraviolet absorbers, light stabilizers, antistatic agents, lubricants, dyes and pigments, plasticizers, flame retardants, mold release agents Additives such as polycarbonate, polyvinyl chloride, polyamide, polybutylene terephthalate, polyethylene terephthalate, polyphenylene oxide,
Other thermoplastic resins such as polyoxymethylene and polymethyl methacrylate can be blended.

Next, the present invention will be described based on examples, but the present invention is not limited to only these examples. All parts and percentages in the composition are based on weight.

The terpolymer (A), graft polymer (B) and binary copolymer (C) used in the present invention are polymers obtained by the following method. The following were used as the glass fiber (D) and the hydrogenated styrene-butadiene block rubber (E).

(1) 70 parts of pure water was placed in a reactor equipped with a terpolymer copolymer stirrer and a plate baffle.
0.2 parts of an initiator (potassium persulfate) and 0.1 part of an emulsifier (sodium lauryl sulfate) were charged. After the inside of the reactor was replaced with nitrogen gas, the mixture was heated under stirring, and the temperature in the tank reached 65 ° C. At this time, 3% of a mixture comprising the monomers shown in Table 1 and a molecular weight modifier (tododecyl mercaptan) was added,
The temperature was raised to 70 ° C. over 30 minutes. Then, the remaining monomer mixture (97%), 50 parts of pure water, 0.1 part of an initiator (potassium persulfate) and an emulsifier (sodium lauryl sulfate)
One part of the aqueous solution was continuously added over 5 hours. Thereafter, the temperature was raised to 75 ° C., and the polymerization was continued for another 2 hours. The obtained polymer latex was coagulated with an aqueous solution of calcium chloride to obtain a terpolymer (A-1 to 8). In addition,
The intrinsic viscosity of the copolymer was adjusted by changing the amount of the molecular weight modifier used.

(2) Graft polymer (B-1) 30 parts of pure water was placed in a reactor equipped with a stirrer and a plate baffle.
Initiator (ferrous sulfate heptahydrate 0.002 part, sodium pyrophosphate 0.1 part and dextrose 0.3 part), polybutadiene latex (weight average particle diameter: 0.30
μ, solid content: 50%, emulsifier: sodium dodecylbenzenesulfonate (50 parts), and then the inside of the reactor was purged with nitrogen gas and heated to 70 ° C. with stirring. afterwards,
35 parts of styrene, 15 parts of acrylonitrile, 0.3 part of molecular weight modifier (t-dodecyl mercaptan) and 2 parts of pure water
0 parts and initiator (cumen hydroperoxide)
An aqueous solution consisting of 2 parts and 0.7 part of an emulsifier (sodium dodecylbenzenesulfonate) was continuously added over 4 hours. Thereafter, polymerization was continued at 75 ° C. for another 2 hours. The obtained polymer latex is coagulated with an aqueous solution of calcium chloride to obtain a graft polymer having a rubber content of 20%, a graft ratio of 35%, a weight average particle diameter of 0.32 μm, and an intrinsic viscosity of an ungrafted polymer of 0.61. (B-1) was obtained.

(3) Graft polymer (B-2) After replacing the reactor equipped with a stirrer and a plate baffle with nitrogen, ethylene-propylene-ethylidene norbornene rubber (propylene content 50%, iodine value 9 and Mooney viscosity) 87) A rubber solution in which 20 parts were dissolved in a solvent (400 parts of n-hexane and 200 parts of ethylene dichloride) was added. Thereafter, 60 parts of styrene, 30 parts of acrylonitrile and 3 parts of an initiator (t-butylperoxypivalate) were added, and the mixture was polymerized at 100 ° C. for 10 hours. The polymer solution was brought into contact with a large excess of methanol, and the precipitated precipitate was separated and dried to obtain a graft polymer (B-2) having a rubber content of 20% and a graft ratio of 52%.

(4) Graft polymer (B-3) After a reactor equipped with a stirrer and a plate baffle was replaced with nitrogen, 20 parts of ethylene (90%)-butylene (10%) rubber was added to a solvent (300 parts of ethylbenzene). ), 70 parts of styrene, 25 parts of acrylonitrile and 2 parts of initiator (benzoyl peroxide) were added, and the mixture was added at 67 ° C.
For 10 hours. The polymerization solution was brought into contact with a large excess of methanol, and the deposited precipitate was separated and dried.
%, A graft polymer (B-3) having a graft ratio of 35% was obtained.

(5) Binary copolymer Pure water 120 was placed in a reactor equipped with a stirrer and a plate baffle.
Parts, an initiator (potassium persulfate) 0.3 part was charged, the inside of the reactor was replaced with nitrogen gas, and then heated under stirring. When the temperature in the tank reached 68 ° C., styrene shown in Table 2 was added. 30% of a monomer mixture composed of acrylonitrile and a molecular weight modifier (t-dodecylmercaptan) and 30% of an aqueous solution of an emulsifier composed of 2 parts of an emulsifier (sodium dodecylbenzenesulfonate) and 28 parts of pure water were continuously added over 5 hours. . Next, the remaining monomer mixture (70%) and the aqueous emulsifier solution (70%) were continuously added over 5 hours. Thereafter, polymerization was continued at 70 ° C. for another 3 hours. The obtained polymer latex was coagulated with an aqueous solution of calcium chloride to obtain a binary copolymer (C-1 to 7). In addition, the intrinsic viscosity of the copolymer was adjusted by changing the amount of the molecular weight modifier used.

(6) Glass fiber Glass fiber having an average fiber length of 6 mm and a fiber diameter of 9 μm treated with a silane compound.

(7) Hydrogenated styrene-butadiene block rubber Commercially available linear hydrogenated styrene-butadiene block rubber (Clayton G-1657X manufactured by Shell). Properties of Clayton G-1657X, specific gravity: 0.90, hardness (Shore A): 65, solution viscosity (25 ° C): 1100c
ps, styrene / butadiene ratio: 13/87.

(8) Hydrogenated styrene-butadiene block rubber Commercially available linear hydrogenated styrene-butadiene block rubber (Clayton G-1650X, manufactured by Shell). Properties of Clayton G-1650X, specific gravity: 0.91, hardness (Shore A): 75, solution viscosity (25 ° C.): 1500 c
ps, styrene / butadiene ratio: 29/71.

Examples 1 to 1 and Comparative Examples 1 to 3 The above-mentioned terpolymer, graft polymer, binary copolymer,
40m with glass fiber and ethylene-butene rubber with vent
Various compositions (pellet-like) were obtained by kneading with an m2-screw extruder (250 to 300 ° C.) Table 3 shows the formulation and Table 4 shows physical properties of the obtained composition.

The physical properties of the composition were measured as follows.

(1) Preparation of Test Pieces for Measurement of Physical Properties The pellets obtained in Examples and Comparative Examples were molded into test pieces for each physical property at a cylinder set temperature of 260 ° C. using a 3.5 oz injection molding machine.

(2) Measurement of physical properties (i) Impact resistance Notched notched Izod impact strength According to ASTM D-256. Unit: Kg · cm / c
m. (1/8 inch thickness) 23 ℃

(Ii) Tapping strength: inner diameter 3.4 mm, upper outer diameter 9.2 mm, lower outer diameter 10.
When a JIS standard M-4 screw is screwed up to 12 mm into a boss having a shape of 0 mm and a height of 25 mm, the strength until the boss is broken is calculated by computer torque (Consolida).
ted Device Inc. Model 2502C
It measured in I). Unit: Kgcm.

(Iii) Heat resistance Complies with ASTM D-648. (1/4 inch thickness) 18.6Kg / cm ² , no annealing. Unit: ° C

(Iv) Workability Melt flow index; according to ASTM D-1238. 265 ° C, 3.8 Kg. Unit: g / 10 minutes Bar flow length: Molded product width 25 mm,
Molding at a molding temperature of 250 ° C., a mold temperature of 50 ° C., and an injection pressure of 70 kg / cm ² by injection molding using a bar flow mold having a thickness of 3 mm and a length of 1000 mm. The product length was measured. Unit: mm.

(V) Tensile strength According to ASTM D-638. Unit: Kg / cm ² .

(Vi) Specific gravity According to ASTM D-792.

[0061]

[Table-1]

[0062]

[Table-2]

[0063]

[Table-3]

[0064]

[Table-4]

[0065]

According to the present invention, there is provided a composition excellent in strength (impact resistance, tapping strength) and heat resistance, which is significantly improved in workability as compared with conventionally known glass fiber reinforced resin compositions. In addition to conventional equipment, such as instrument panels, lamp housings, and other automotive parts, roll bearings, chassis and other office equipment, as well as better workability and tapping strength, The composition can be used for a complicated-shaped part, a thin-walled part, and the like, which were difficult with the composition. Further, by improving the workability, mechanical properties, and thermal properties, it is possible to reduce the thickness of the conventional parts, and also to reduce the weight of the parts.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI C08L 51:06 C08L 51:06 55:02 55:02 53:00) 53:00) (C08L 33/20 (C08L 33/20) 51:06 51:06 55:02 55:02 53:00) 53:00) (72) Inventor Mikio Hirai 2-10-2 Kikumoto-cho, Niihama-shi, Ehime Prefecture Sumitomo Dow Ehime Laboratory Examiner Takahiro Harada (56) References JP-A-60-47045 (JP, A) JP-A-61-16955 (JP, A) JP-A-5-279544 (JP, A) JP-A-62-267350 (JP, A) JP-A-63-159458 (JP, A) JP-A-63-161047 (JP, A) JP-A-3-205411 (JP, A) JP-A-59-187046 (JP, A) JP-A-63-122746 (JP, A) JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C08L 25/00-25/18 C08K 7/14 C08L 33/20 C08L 51/04-51/06 C08L 53/00-5 3/02 C08L 55/02

Claims (1)

(57) [Claims] (A) N-phenylmaleimide 10 to 30
% Of styrene, 45 to 85% by weight of styrene and 5 to 25% by weight of acrylonitrile.
60% by weight, (B) conjugated diene rubber (i), ethylene
-Propylene rubber (ii), ethylene 70 to 90 weight
% Ethylene and 30 to 10% by weight of butylene.
Rubber component 20 to 7 selected from butylene rubber (iii)
0% by weight, 5 to 20% by weight of a graft polymer obtained by polymerizing 25 to 60% by weight of styrene and 5 to 40% by weight of acrylonitrile, (C) 50 to 80% by weight of styrene and 20 to 50% by weight of acrylonitrile 10 to 80% by weight of the binary copolymer obtained, and (D) 5 to 35% by weight of glass fiber, and the following conditions ( a to
A glass fiber-containing resin composition comprising (E) 0.05 to 5 parts by weight of a hydrogenated styrene butadiene block rubber per 100 parts by weight of the resin composition satisfying ( d ). (A) Intrinsic viscosity of terpolymer = 0.20 to 0.7
0. (B) Intrinsic viscosity of the binary copolymer = 0.40 to 1.0
0. (C) Intrinsic viscosity of ternary copolymer ≦ intrinsic viscosity of binary copolymer. (D) Styrene content in binary copolymer-styrene content in ternary copolymer = +20 to -5.