JP3417043B2 - Glass fiber reinforced polycarbonate resin composition - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass fiber reinforced polycarbonate resin composition. More specifically, the present invention relates to a polycarbonate resin composition which is excellent in mechanical strength such as bending strength and tensile rupture strength and the surface appearance, and is also excellent in impact strength or impact strength and thermal stability. 2. Description of the Related Art Polycarbonate resins are excellent in mechanical strength, electrical properties, transparency, etc., and are used as engineering plastics in various fields such as electric / electronic devices, automobiles, etc. Widely used in As a polycarbonate resin having such characteristics, a glass fiber-reinforced polycarbonate resin to which glass fibers are added in order to improve impact resistance and dimensional stability is known. However, polycarbonate resin, by adding glass fiber,
There is a disadvantage that the impact resistance is greatly reduced. Conventionally, various methods have been studied for improving the impact resistance, which is reduced by adding the glass fiber to the polycarbonate resin. For example, JP-A-55-160052 and JP-A-2-173306 disclose a method of introducing a polycarbonate-polyorganosiloxane copolymer into a polycarbonate resin. By introducing this polycarbonate-polyorganosiloxane copolymer, an improvement in impact resistance is observed. However, the effect of improving the impact resistance is not yet sufficient, and improvement is demanded. [0003] Accordingly, the present inventors have proposed:
In view of the above situation, the disadvantages of the conventional method have been eliminated,
In order to develop a polycarbonate resin composition having excellent mechanical strength such as tensile strength at break and the like and surface appearance, and also having excellent impact strength or impact strength and thermal stability, intensive studies have been made. As a result, a polycarbonate - the polyorganosiloxane copolymer as essential components, an epoxy resin 及
It has been found that a polycarbonate-based resin composition containing a specific glass fiber treated with a sizing agent containing urethane resin has desired properties. The present invention has been completed based on such findings. That is, the present invention relates to a sizing agent containing (A) 5 to 95% by weight of a polycarbonate-polyorganosiloxane copolymer, (B) 0 to 90% by weight of a polycarbonate resin, and (C) an epoxy resin and a urethane resin. Consist of 5-60% by weight of treated glass fiber, and
The proportion of the polyorganosiloxane component in the component (A) is 0.5 to 4 based on the total amount of the components (A) and (B).
It is intended to provide a polycarbonate resin composition characterized by being 0% by weight. First, a polycarbonate-polyorganosiloxane copolymer (PC-PDMS copolymer) as the component (A) constituting the polycarbonate resin composition of the present invention.
May be various, but is preferably a compound represented by the general formula (I): Wherein R ¹ and R ² are each a halogen atom (eg, chlorine, bromine, fluorine, iodine) or an alkyl group having 1 to 8 carbon atoms (eg, a methyl group, an ethyl group,
Propyl, n-butyl, isobutyl, amyl,
Isoamyl group, hexyl group, etc.), which may be the same or different. m and n are
Are each an integer of 0 to 4, and when m is 2 to 4,
R ¹ may be the same or different, and when n is 2 to 4, R ² may be the same or different. And Z has 1 to 1 carbon atoms.
An alkylene group having 8 carbon atoms or an alkylidene group having 2 to 8 carbon atoms (for example, a methylene group, an ethylene group, a propylene group, a butylene group, a pentylene group, a hexylene group, an ethylidene group, an isopropylidene group, etc.) and a cycloalkyl group having 5 to 15 carbon atoms. alkylene group or a cycloalkylidene group having 5 to 15 carbon atoms (e.g., cyclopentylene group, cyclohexylene group, cyclopentylidene group, etc. cyclohexylidene group), or _{-SO 2 -, - SO -,} - S-, -O
—, —CO— bond or general formula (II) or (II ′) [0009] The bond represented by And a polycarbonate unit having a repeating unit having a structure represented by the general formula:
(III) Wherein R ³ , R ⁴ and R ⁵ are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms (eg, methyl, ethyl, propyl, n-butyl, isobutyl, etc.) Or a phenyl group, which may be the same or different. P and q are each an integer of 0 or 1 or more. And a polyorganosiloxane part having a repeating unit having the structure represented by the following formula: Here, the degree of polymerization of the polycarbonate part is
The degree of polymerization of the polyorganosiloxane moiety is preferably from 2 to 500. PC-P above
The DMS copolymer includes a polycarbonate part having a repeating unit represented by the above general formula (I) and a polycarbonate part having the above general formula (II)
A block copolymer comprising a polyorganosiloxane unit having a repeating unit represented by the formula (I), having a viscosity average molecular weight of 10,000 to 40,000, preferably 12,000.
0 to 35,000, more preferably 14,000 to 35,000
0. [0012] Such a PC-PDMS copolymer includes, for example, a polycarbonate oligomer (PC oligomer) constituting a polycarbonate portion prepared in advance and a polyorgano having a reactive group at a terminal, constituting a polyorganosiloxane portion. Siloxane (eg, polydimethylsiloxane (PDMS), polydialkylsiloxane such as polydiethylsiloxane, or polymethylphenylsiloxane) is dissolved in a solvent such as methylene chloride, chlorobenzene, or chloroform, and an aqueous sodium hydroxide solution of bisphenol is added. It can be produced by interfacial polycondensation reaction using triethylamine, trimethylbenzylammonium chloride or the like as a catalyst. Further, a polycarbonate-polyorganosiloxane copolymer produced by the method described in JP-B-44-30105 or the method described in JP-B-45-20510 can also be used. Here, the PC oligomer having a repeating unit represented by the general formula (I) can be prepared by a solvent method, that is, in a solvent such as methylene chloride in the presence of a known acid acceptor and a molecular weight modifier, the general formula (IV) ## STR4 ## Wherein R ¹ , R ² , Z, m and n are the same as above. Or a transesterification reaction between a dihydric phenol and a carbonate precursor such as diphenyl carbonate. Here, there are various dihydric phenols represented by the general formula (IV), and 2,2-bis (4-hydroxyphenyl) propane [bisphenol A] is particularly preferable. Further, bisphenol A may be obtained by partially or entirely substituting another dihydric phenol. As dihydric phenols other than bisphenol A,
Bis (4-hydroxyphenyl) alkane other than bisphenol A; 4,4′-dihydroxydiphenyl; bis (4-hydroxyphenyl) cycloalkane; bis (4-hydroxyphenyl) sulfide; bis (4-hydroxyphenyl) sulfone; Bis (4-hydroxyphenyl) ether; a compound such as bis (4-hydroxyphenyl) ketone or bis (3,5-dibromo-4-hydroxyphenyl) propane; bis (3,5 -Dichloro-
Examples thereof include halogenated bisphenols such as 4-hydroxyphenyl) propane. In addition, examples of the dihydric phenol include hydroquinone. In the present invention, the PC oligomer used for the production of the PC-PDMS copolymer may be a homopolymer using one of the above-mentioned dihydric phenols.
Copolymers using more than one species may be used. Further, it may be a thermoplastic random branched polycarbonate obtained by using a polyfunctional aromatic compound in combination with the dihydric phenol. The proportion of the polyorganosiloxane component in the component (A) is from 0.5 to 40% by weight, preferably from 0.8 to 35% by weight, based on the total amount of the components (A) and (B). , More preferably 1.0 to 15% by weight. Here, if it is less than 0.5% by weight, the effect of improving impact resistance is not seen. On the other hand, if it exceeds 40% by weight, a copolymer having a sufficient molecular weight cannot be obtained. Next, the polycarbonate resin (P) of the component (B) constituting the polycarbonate resin composition of the present invention is used.
C) can be easily produced by reacting a dihydric phenol with a phosgene or carbonate compound. That is, for example, by reacting a dihydric phenol with a carbonate precursor such as phosgene in a solvent such as methylene chloride in the presence of a known acid acceptor or a molecular weight regulator, or as in the case of dihydric phenol and diphenyl carbonate. It is produced by a transesterification reaction with a suitable carbonate precursor. Here, the dihydric phenol may be the same as or different from the compound represented by the general formula (IV) described above. Examples of the carbonate compound include diaryl carbonates such as diphenyl carbonate and dialkyl carbonates such as dimethyl carbonate and diethyl carbonate. On the other hand, the PC-PDMS copolymer or PC
At the same time, as the glass fiber of the component (C) constituting the polycarbonate resin composition of the present invention, a glass fiber which has been subjected to a sizing treatment with a sizing agent containing an epoxy resin in advance is used. Here, the glass fiber to be subjected to the sizing treatment with the sizing agent containing the epoxy resin may be any of alkali-containing glass, low alkali glass, and non-alkali glass. There is no particular limitation on its form,
For example, any of roving, chopped strand, milled fiber and the like can be used. The average fiber diameter is 1 to 30 μm, preferably 5 to 2 μm.
5 μm. Glass fiber in the present invention, first,
Such a glass fiber is treated with a sizing agent containing an epoxy resin as a component, and bundled into about 100 to 1,000 fibers to form a strand. Next, a chopped strand obtained by cutting the obtained strand into an average fiber length of 1 to 8 mm, preferably about 3 to 6 mm is used. On the other hand, as a sizing agent containing an epoxy resin to be subjected to a glass fiber sizing treatment, an epoxy resin can be used alone, and various kinds of resins in which an epoxy resin and another resin are used in combination can be used. . There are various types of the above epoxy resin. For example, bisphenol epichlorohydrin type epoxy resin, glycidyl ether type epoxy resin, tetraepoxy resin, novolak type epoxy resin,
Epoxy resins such as glycidylamine, epoxy alkyl esters and epoxidized unsaturated compounds are exemplified. As another resin that can be used in combination with these epoxy resins, a urethane resin is used. Here, there are various urethane resins that can be used in combination with the epoxy resin, such as a polyadduct of a polyether having a hydroxyl group at both ends and a diisocyanate (polyether type), or a polyester having a hydroxyl group at both ends. And polyisocyanates (polyester-based). In the case of a polyether-based urethane resin, examples of the polyether include polypropylene glycol and poly-1,4-butylene glycol having a molecular weight of 1,000 to 2,000. In the case of a polyester-based urethane resin, examples of the polyester include a condensation polymer of ethylene glycol and adipic acid. On the other hand, as the diisocyanate, 2,6-tolylene diisocyanate (TDI), diphenylmethane-4,4'-diisocyanate (MDI), hexamethylene diisocyanate, or the like can be used. And when the epoxy resin and the urethane resin are used in combination, the usage ratio of both resins is arbitrary, and may be appropriately determined according to the situation and the like.
Preferably epoxy resin: urethane resin = 1 to 4: 5 to
1 (weight ratio). There is no particular limitation on the method of sizing the glass fibers using these sizing agents, and any method conventionally used, such as dip coating, roller coating, spray coating, flow coating, spray coating, or the like, may be used. Can be used. The glass fiber is made of silane such as aminosilane, epoxysilane, vinylsilane, methacrylsilane, titanate, aluminum, chromium, zirconium, borane, etc. in order to increase the affinity with the resin. May be surface-treated with the above coupling agent. Among these, a silane coupling agent and a titanate coupling agent are preferable, and a silane coupling agent is particularly preferable. Specific examples of the preferred silane-based coupling agent include triethoxysilane, vinyl tris (β-methoxyethoxy) silane,
γ-methacryloxypropyltrimethoxysilane, γ-
Glycidoxypropyltrimethoxysilane, β- (3,
4-epoxycyclohexyl) ethyltrimethoxysilane, N-β- (aminoethyl) -γ-aminopropylmethyldimethoxysilane, γ-aminopropyltriethoxysilane, N-phenyl-γ-aminopropylmethtrimethoxysilane, γ-mercapto Propylmetrimethoxysilane, γ-chloropropyltrimethoxysilane and the like. Among them, γ-aminopropyltriethoxysilane and N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane are preferably used. The method for surface-treating the glass fiber with the above-described coupling agent is not particularly limited, and a conventionally used method, for example, an aqueous solution method, an organic solvent method, or a spray method may be used. it can. And the amount of the sizing agent and the coupling agent is not particularly limited, but usually the total amount thereof is 0.
It is used in an amount of 1 to 1.5% by weight. The polycarbonate resin composition of the present invention comprises the above-mentioned components (A), (B) and (C), and the mixing ratio thereof is the polycarbonate-polyorganosiloxane which is the component (A). Copolymer 5-95
%, Preferably 10 to 90% by weight, and 0 to 90% by weight, preferably 0 to 90% by weight of the polycarbonate resin (B).
It is 5 to 60% by weight, preferably 10 to 50% by weight, of glass fibers bunched with a sizing agent containing エ ポ キ シ 80% by weight and an epoxy resin as the component (C). Here, when the mixing ratio of the glass fiber of the component (C) is less than 5% by weight, the dimensional stability is reduced, and at the same time, the effect of improving the rigidity is small, and a desired mechanical strength cannot be obtained. If it exceeds 60% by weight, kneading of the resin is difficult or impossible, which is not preferable. The resin composition of the present invention may further comprise, in addition to the above components (A), (B) and (C), if necessary,
As the component (D), various additives can be blended as long as the object of the present invention is not impaired. For example, various additives include antioxidants such as hindered phenols, phosphites, phosphates, and amines; ultraviolet absorbers such as benzotriazoles and benzophenones; and light absorbers such as hindered amines. Examples include stabilizers, external lubricants such as aliphatic carboxylic acid esters and paraffins, common flame retardants, release agents, antistatic agents, coloring agents, and the like. The resin composition of the present invention can be obtained by mixing and kneading the above components (A), (B) and (C) with the component (D), if necessary. The compounding and kneading may be performed by a commonly used method, for example, a method using a ribbon blender, a Henschel mixer, a Banbury mixer, a drum tumbler, a single screw extruder, a twin screw extruder, a co-kneader, a multi-screw extruder, or the like. Can be performed. The heating temperature during kneading is usually selected in the range of 250 to 300 ° C.
The polycarbonate resin composition thus obtained can be applied to various known molding methods, for example, injection molding, hollow molding, extrusion molding, compression molding, calendar molding, rotational molding, and the like. It can be used to produce molded articles in the automotive field such as molded articles, automotive glass, sunroofs, or molded articles in the electric and electronic fields. EXAMPLES The present invention will be described in further detail with reference to Production Examples, Examples and Comparative Examples. Production Example 1-1 [Production of PC oligomer A] 5% by weight of 400 liters
60 kg of bisphenol A was dissolved in an aqueous sodium hydroxide solution to prepare an aqueous sodium hydroxide solution of bisphenol A. Then, the sodium hydroxide aqueous solution of bisphenol A kept at room temperature was passed through an orifice plate at a flow rate of 138 liters / hour and methylene chloride at a flow rate of 69 liters / hour through a tubular reactor having an inner diameter of 10 mm and a length of 10 m. Phosgene was introduced thereinto and blown at a flow rate of 10.7 kg / hour, and the reaction was continuously carried out for 3 hours. The tubular reactor used here was a double tube, and the outlet temperature of the reaction solution was kept at 25 ° C. by passing cooling water through the jacket. The pH of the discharged liquid is 10 to 11
It was adjusted to be. The reaction solution thus obtained was allowed to stand, and the aqueous phase was separated and removed. A methylene chloride phase (220 liters) was collected. 170 liters of methylene chloride was further added thereto, followed by sufficient stirring. This was designated as PC oligomer A (concentration: 317 g / liter). The degree of polymerization of the PC oligomer A obtained here is 3-4.
Met. Production Example 2-1 Production of Reactive PDMS-A 1,483 g of octamethylcyclotetrasiloxane, 96 g of 1,1,3,3-tetramethyldisiloxane and 35 g of 86% sulfuric acid were mixed. And stirred at room temperature for 17 hours. Thereafter, the oil phase is separated and 2
5 g of sodium bicarbonate was added and stirred for 1 hour. After filtration, vacuum distillation was performed at 150 ° C. and 3 torr to remove low-boiling substances to obtain an oil. 60 g of 2-allylphenol and 0.0
To a mixture with 014 g of platinum as a platinum chloride-alcoholate complex was added 294 g of the oil obtained above in 90 g.
Added at a temperature of ° C. The mixture was stirred for 3 hours while maintaining the temperature at 90-115 ° C. The product was extracted with methylene chloride and washed three times with 80% aqueous methanol to remove excess 2-allylphenol. The product was dried over anhydrous sodium sulphate and evaporated in vacuo to a temperature of 115 ° C. The resulting terminal phenol PDMS is N
As a result of MR measurement, the number of repeating dimethylsilanooxy units was 30. Production Example 2-2 [Synthesis of Reactive PDMS-B]
The procedure was performed in the same manner as in Production Example 2-1 except that the amount of 1,1,3,3-tetramethyldisiloxane was changed to 18.1 g. The number of repeating dimethylsilanooxy units of the obtained terminal phenol PDMS was 150 as measured by NMR. Production Example 2-3 [Synthesis of Reactive PDMS-C]
The procedure was performed in the same manner as in Production Example 2-1 except that the amount of 1,1,3,3-tetramethyldisiloxane was changed to 7.72 g. The number of repeating dimethylsilanooxy units of the obtained terminal phenol PDMS was 350 as measured by NMR. [0026] Production Example 3-1 [PC-PDMS copolymer A ₁ of Production] methylene chloride reactive PDMS-A160g obtained in Production Example 2-1 2
Then, 10 liters of the PC oligomer obtained in Production Example 1 was mixed. There, sodium hydroxide 26
g in 1 liter of water and 5.7 cc of triethylamine were added, and the mixture was stirred and reacted at 500 rpm for 1 hour at room temperature. After completion of the reaction, a solution prepared by dissolving 600 g of bisphenol A in 5 liters of a 5.2% by weight aqueous sodium hydroxide solution, 8 liters of methylene chloride and 81 g of p-tert-butylphenol were added to the reaction system.
The mixture was stirred and reacted at 0 rpm at room temperature for 1 hour. After the reaction,
5 liters of methylene chloride was added, followed by water washing with 5 liters of water, alkali washing with 5 liters of 0.01N sodium hydroxide aqueous solution, acid washing with 5 liters of 0.1N hydrochloric acid, and water washing with 5 liters of water in that order. Finally, methylene chloride was removed to obtain a chip-shaped PC-PDMS copolymer. [0027] Production Example 3-2 [Production PC-PDMS copolymer A _2] Production Example 3-1, except for changing the reactive PDMS-A reactive PDMS-B is as in Preparation Example 3-1 Similarly, a chip-shaped PC
-A PDMS copolymer was obtained. [0028] Production Example 3-3 [Production PC-PDMS copolymer A _3] Production Example 3-1, except for changing the reactive PDMS-A to the reactive PDMS-C is that of Preparation 3-1 Similarly, a chip-shaped PC
-A PDMS copolymer was obtained. [0029] In Production Example 3-4 [Production PC-PDMS copolymer A _4] Production Example 3-1, 113 g of p-tert-butylphenol 81g
A PC-PDMS copolymer in the form of a chip was obtained in the same manner as in Production Example 3-1 except that the above was changed to. [0030] In Production Example 3-5 [Production PC-PDMS copolymer A _5] Production Example 3-1, 113 g of p-tert-butylphenol 81g
And the reactive PDMS-A is replaced with a reactive PDMS-
Except having changed to B, it carried out similarly to manufacture example 3-1, and obtained the chip-shaped PC-PDMS copolymer. [0031] In Production Example 3-6 Production Example 3-1 [Production PC-PDMS copolymer A _6], changing the reactive PDMS-A160g to 320 g, also a p-tert-butylphenol 81 g 113
A chip-like PC-PDMS copolymer was obtained in the same manner as in Production Example 3-1 except that g was changed to g. PC-PDM obtained in Production Examples 3-1 to 6
Each of the S copolymers A _{1 to} A ₆ was dried at 120 ° C. for 24 hours, and then pelletized with an extruder at 280 ° C. For each of them, PDMS chain length, PDMS content and viscosity average molecular weight were measured as physical properties evaluation. Table 1 shows the results. [Table 1] The measurement of the PDMS chain length, PDMS content and viscosity average molecular weight was carried out according to the following. 1: PDMS chain length (n: dimethylsilanooxane unit) The peak of the methyl group of dimethylsiloxane found at 0.2 ppm in ¹ HNMR, and the PC-P found at 2.6 ppm.
It was determined from the intensity ratio with the peak of the methylene group at the DMS bond. 2: PDMS content The PDMS content was determined from the intensity ratio of the peak of the isopropyl methyl group of bisphenol A found at 1.7 ppm in ¹ HNMR to the peak of the methyl group of dimethylsiloxane found at 0.2 ppm. 3: Viscosity average molecular weight (Mv) The viscosity of the methylene chloride solution at 20 ° C. was measured with an Ubbelohde type viscosity tube, and the intrinsic viscosity [η] was determined from this. [Η] = 1.23 × 10 ⁻⁵ × Mv ^0.83 Examples 1-3, Reference Examples 1-8 and Comparative Example 1
-17 PC-PDMS copolymer A obtained in Production Examples 3-1 to 6
₁ to A ₆ and commercially available polycarbonate, glass fiber were blended in proportions shown in Table 2, vented twin-screw extruder [manufactured by Toshiba Machine Co., Ltd., TEM-35B] by kneading at a temperature 300 ° C., Pelletized. In addition, the glass fiber was supplied from the downstream of the hopper supply position of the raw material resin of the extruder. Each of the obtained pellets was dried with hot air at 120 ° C. for 5 hours, and then subjected to an injection molding machine [Toshiba Machine Co., Ltd., I
S100EN], molding temperature of 300 ° C., 80 ° C.
A test piece was prepared by injection molding in a mold cavity at a mold temperature of. About the obtained test piece, Izod impact strength, bending strength, tensile strength, and surface appearance evaluation were implemented as quality evaluation. The thermal stability was evaluated by using a cylinder temperature of 3 in an injection molding machine [Toshiba Machine Co., Ltd., IS25EP1A] at the time of injection molding of raw material pellets.
Difference in color tone (color difference Δ ^* a) between a molded product molded at 20 ° C. for 20 minutes and a molded product in a normal cycle (residence of 40 seconds)
b) was measured and evaluated. Table 3 shows the results. The commercially available polycarbonates are as follows. B ₁ : Toughlon A2200 [Made by Idemitsu Petrochemical Co., Ltd.
v = 21,000] B ₂ : Tafflon A1500 [Made by Idemitsu Petrochemical Co., Ltd.
v = 15,000] The glass fibers are as follows. C ₁ : MA419 manufactured by Asahi Fiberglass Co., Ltd. Coupling agent: Aminosilane sizing agent: Bisphenol type epoxy resin type: Chopped strand (diameter 13 μm, length 3)
mm) C ₂ : ECR glass coupling agent manufactured by Asahi Fiber Glass Co., Ltd .: aminosilane sizing agent: epoxy resin type: chopped strand (diameter 23 μm, length 3)
mm) C ₃ : FT121 manufactured by Asahi Fiberglass Co., Ltd. Coupling agent: Aminosilane sizing agent: Urethane resin and bisphenol type epoxy resin Type: Chopped strand (diameter 13 μm, length 3)
mm) C ₄ : MA409C coupling agent manufactured by Asahi Fiberglass Co., Ltd. Coupling agent: aminosilane sizing agent: urethane resin type: chopped strand (13 μm in diameter, 3 mm in length) C ₅ : TA409C coupling agent manufactured by Asahi Fiberglass Co., Ltd. Aminosilane sizing agent: urethane resin type: chopped strand (diameter 23 μm, length 3
mm) C ₆ : FT514 manufactured by Asahi Fiberglass Co., Ltd. Coupling agent: Aminosilane sizing agent: Polyolefin resin type: Chopped strand (diameter 13 μm, length 3)
mm) [Table 2] [Table 3] [Table 4] [Table 5] Each measurement was performed as follows. 1: Izod impact strength Measured according to JIS-K-7110. 2: Tensile strength Measured according to JIS-K-7203. 3: Bending strength was measured in accordance with JIS-K-7113. 4: Visual evaluation and tactile evaluation of the surface appearance molded article were performed and judged. 5: Color difference (Δ ^* ab) Measured according to JIS-K-7105. As described above, the polycarbonate resin composition of the present invention is excellent in mechanical strength such as bending strength and tensile rupture strength and surface appearance, and is excellent in impact strength.
And it is excellent in thermal stability. Therefore, the polycarbonate resin composition of the present invention can be effectively used as a material for various molded articles, for example, various molded articles widely used in the fields of electric / electronic devices and automobiles.

Continuation of front page (56) References JP-A-3-243656 (JP, A) JP-A-2-1733061 (JP, A) JP-A-55-123150 (JP, A) JP-A-4-1266 (JP) , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C08L 69/00 C08L 83/00-83/16 C08K 3/00-13/08

Claims (1)

(57) Claims: (A) 5 to 95% by weight of a polycarbonate-polyorganosiloxane copolymer, (B) 0 to 90% by weight of a polycarbonate resin, and (C) an epoxy resin and
Glass fiber 5-6 treated with sizing agent containing urethane resin
0% by weight, and the proportion of the polyorganosiloxane component in the component (A) is 0.5 to 40% by weight based on the total amount of the components (A) and (B). Polycarbonate resin composition.