JP7075224B2 - Polycarbonate resin composition - Google Patents

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JP7075224B2
JP7075224B2 JP2018008858A JP2018008858A JP7075224B2 JP 7075224 B2 JP7075224 B2 JP 7075224B2 JP 2018008858 A JP2018008858 A JP 2018008858A JP 2018008858 A JP2018008858 A JP 2018008858A JP 7075224 B2 JP7075224 B2 JP 7075224B2
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博友 片野
智子 豊田
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Daicel Polymer Ltd
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本発明は、透明で、機械的強度のよい成形体が得られるポリカーボネート系樹脂組成物に関する。 The present invention relates to a polycarbonate-based resin composition capable of obtaining a transparent molded product having good mechanical strength.

携帯電話などの電子機器ハウジングは薄肉の成形体からなるものであり、機械的強度が高いことが要求され、さらに意匠性を高める観点から着色し易いように透明性が高いことが要求される。
特許文献1、2の発明は、ポリカーボネート樹脂と重量平均分子量5,000~30,000のメチルメタクリレート単位を含む重合体を含むポリカーボネート系樹脂組成物であり、耐衝撃性、耐傷つき性(耐スクラッチ性)、透明性が良い成形体が得られることが記載され、電子機器、通信機器のハウジング用途などが例示されている。
The housing of an electronic device such as a mobile phone is made of a thin-walled molded body, and is required to have high mechanical strength, and further, from the viewpoint of enhancing the design, it is required to have high transparency so that it can be easily colored.
The inventions of Patent Documents 1 and 2 are polycarbonate-based resin compositions containing a polycarbonate resin and a polymer containing a methyl methacrylate unit having a weight average molecular weight of 5,000 to 30,000, and are impact-resistant, scratch-resistant (scratch-resistant), and transparent. It is described that a molded product having good properties can be obtained, and examples thereof include housing applications for electronic devices and communication devices.

特開2016-153442号公報Japanese Unexamined Patent Publication No. 2016-153442 特開2016-153443号公報Japanese Unexamined Patent Publication No. 2016-153443

本発明は、透明で、機械的強度のよい成形体が得られるポリカーボネート系樹脂組成物を提供することを課題とする。 An object of the present invention is to provide a polycarbonate-based resin composition capable of obtaining a transparent molded product having good mechanical strength.

本発明は、(A)ポリカーボネート系樹脂と(B)重量平均分子量5,000~30,000のメチルメタクリレート単位を含む重合体を含有しており、
前記(A)成分のポリカーボネート系樹脂が、下記一般式(I)で表される繰り返し単位を含むポリカーボネートブロックと、下記一般式(II)で表される繰り返し単位を含むポリオルガノシロキサンブロックとを有する、粘度平均分子量が10,000~40,000であるポリカーボネート-ポリオルガノシロキサン共重合体であり、
(A)成分と(B)成分の合計量中の(A)成分の含有割合が65~93質量%、(B)成分の含有割合が7~35質量%であり、
さらに(A)成分と(B)成分の合計100質量部に対して、(C)ガラス繊維4~60質量部を含有している、ポリカーボネート系樹脂組成物を提供する。
The present invention contains (A) a polycarbonate-based resin and (B) a polymer containing a methyl methacrylate unit having a weight average molecular weight of 5,000 to 30,000.
The polycarbonate-based resin of the component (A) has a polycarbonate block containing a repeating unit represented by the following general formula (I) and a polyorganosiloxane block containing a repeating unit represented by the following general formula (II). , A polycarbonate-polyorganosiloxane copolymer having a viscosity average molecular weight of 10,000 to 40,000.
The content ratio of the component (A) in the total amount of the component (A) and the component (B) is 65 to 93% by mass, and the content ratio of the component (B) is 7 to 35% by mass.
Further, a polycarbonate resin composition containing 4 to 60 parts by mass of (C) glass fiber with respect to 100 parts by mass of the total of the component (A) and the component (B) is provided.

Figure 0007075224000001
Figure 0007075224000001

(一般式(I)中、
1およびR2は、それぞれ独立にハロゲン原子、炭素数1~6のアルキル基または炭素数1~6のアルコキシ基を示し、
Xは単結合、炭素数1~8のアルキレン基、炭素数2~8のアルキリデン基、炭素数5~15のシクロアルキレン基、炭素数5~15のシクロアルキリデン基、フルオレンジイル基、炭素数7~15のアリールアルキレン基、炭素数7~15のアリールアルキリデン基、-S-、-SO-、-SO2-、-O-またはCO-を示し、
aおよびbは、それぞれ独立に0~4の整数を示す。
一般式(II)中、
3およびR4は、それぞれ独立に水素原子、ハロゲン原子、炭素数1~6のアルキル基、炭素数1~6のアルコキシ基または炭素数6~12のアリール基を示し、
平均繰り返し数nは、ポリオルガノシロキサンブロック中のシロキサン繰り返し単位の合計数を示す。)
(In general formula (I),
R 1 and R 2 independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, respectively.
X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorinyl group, and a carbon number of carbon atoms. Representing an arylalkylene group of 7 to 15, an arylalkylidene group of 7 to 15 carbon atoms, -S-, -SO-, -SO 2- , -O- or CO-,
a and b each independently represent an integer of 0 to 4.
In general formula (II),
R 3 and R 4 independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
The average number of repeats n indicates the total number of siloxane repeat units in the polyorganosiloxane block. )

本発明のポリカーボネート系樹脂組成物から得られる成形体は、透明性および機械的強度に優れている。
このため前記成形体は所望の色に着色することができ、耐久性も良い。
The molded product obtained from the polycarbonate-based resin composition of the present invention is excellent in transparency and mechanical strength.
Therefore, the molded product can be colored in a desired color and has good durability.

<ポリカーボネート系樹脂組成物>
(A)成分のポリカーボネート系樹脂は、一般式(I)で表される繰り返し単位を含むポリカーボネートブロックと、一般式(II)で表される繰り返し単位を含むポリオルガノシロキサンブロックとを有するポリカーボネート-ポリオルガノシロキサン共重合体である。
<Polycarbonate resin composition>
The polycarbonate-based resin of the component (A) is a polycarbonate-poly having a polycarbonate block containing a repeating unit represented by the general formula (I) and a polyorganosiloxane block containing a repeating unit represented by the general formula (II). It is an organosiloxane copolymer.

Figure 0007075224000002
Figure 0007075224000002

(一般式(I)中、
1およびR2は、それぞれ独立にハロゲン原子、炭素数1~6のアルキル基または炭素数1~6のアルコキシ基を示し、
Xは単結合、炭素数1~8のアルキレン基、炭素数2~8のアルキリデン基、炭素数5~15のシクロアルキレン基、炭素数5~15のシクロアルキリデン基、フルオレンジイル基、炭素数7~15のアリールアルキレン基、炭素数7~15のアリールアルキリデン基、-S-、-SO-、-SO2-、-O-またはCO-を示し、
aおよびbは、それぞれ独立に0~4の整数を示す。
一般式(II)中、
3およびR4は、それぞれ独立に水素原子、ハロゲン原子、炭素数1~6のアルキル基、炭素数1~6のアルコキシ基または炭素数6~12のアリール基を示し、
平均繰り返し数nは、ポリオルガノシロキサンブロック中のシロキサン繰り返し単位の合計数を示す。)
(In general formula (I),
R 1 and R 2 independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, respectively.
X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorinyl group, and a carbon number of carbon atoms. 7 to 15 arylalkylene groups, 7 to 15 carbon atoms arylalkylidene groups, -S-, -SO-, -SO 2- , -O- or CO- are shown.
a and b each independently represent an integer of 0 to 4.
In general formula (II),
R 3 and R 4 independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
The average number of repeats n indicates the total number of siloxane repeat units in the polyorganosiloxane block. )

(A)成分は、粘度平均分子量が10,000~40,000であり、好ましくは10,000~30,000である。
一般式(I)で表される繰り返し単位を含むポリカーボネートブロックと一般式(II)で表される繰り返し単位を含むポリオルガノシロキサンブロックは、(A)成分が上記粘度範囲になるようにそれぞれの繰り返し単位数が調整される。
粘度平均分子量(Mv)は、ウベローデ型粘度計を用いて、20℃における塩化メチレン溶液の粘度を測定し、これより極限粘度[η]を求め、次式にて算出することができる(特開2008-202012号公報参照)。
[η]=1.23×10-5Mv0.83
The component (A) has a viscosity average molecular weight of 10,000 to 40,000, preferably 10,000 to 30,000.
The polycarbonate block containing the repeating unit represented by the general formula (I) and the polyorganosiloxane block containing the repeating unit represented by the general formula (II) are each repeated so that the component (A) is within the above viscosity range. The number of units is adjusted.
The viscosity average molecular weight (Mv) can be calculated by the following formula by measuring the viscosity of the methylene chloride solution at 20 ° C. using a Ubbelohde viscometer and obtaining the ultimate viscosity [η] from this. 2008-20 2012 issue).
[Η] = 1.23 × 10 -5 Mv 0.83

(A)成分のポリカーボネート-ポリオルガノシロキサン共重合体は、一分子中のSi量が1~10質量%の範囲であるものが好ましい。 The polycarbonate-polyorganosiloxane copolymer of the component (A) preferably has a Si content in one molecule in the range of 1 to 10% by mass.

(B)成分のメチルメタクリレート単位を含む重合体は、表面硬度向上剤として作用するものであり、重量平均分子量5,000~30,000の重合体であり、好ましくは重量平均分子量10,000~25,000の重合体である。
重量平均分子量は、テトラヒドロフラン溶媒を用いたGPC測定により求めた標準ポリスチレン換算値とする。
The polymer containing the methyl methacrylate unit of the component (B) acts as a surface hardness improving agent, and is a polymer having a weight average molecular weight of 5,000 to 30,000, preferably a polymer having a weight average molecular weight of 10,000 to 25,000. ..
The weight average molecular weight shall be a standard polystyrene-equivalent value obtained by GPC measurement using a tetrahydrofuran solvent.

(B)成分は、メチルメタクリレート単位を20質量%以上含有するものが好ましく、40質量%以上含有するものがより好ましく、60質量%以上含有するものがさらに好ましい。本発明では、前記割合は原料基準値と実測値のいずれも同じとする。 The component (B) preferably contains 20% by mass or more of a methyl methacrylate unit, more preferably 40% by mass or more, and further preferably 60% by mass or more. In the present invention, the ratio is the same for both the raw material reference value and the measured value.

(B)成分を共重合体にするときの共重合成分としては、
メチルアクリレート、エチルアクリレート、プロピルアクリレート、イソプロピルアクリレート、ブチルアクリレート、アミルアクリレート、ヘキシルアクリレート、オクチルアクリレート、2-エチルヘキシルアクリレート、シクロヘキシルアクリレート、ドデシルアクリレート、オクタデシルアクリレート、フェニルアクリレート、ベンジルアクリレートなどのアクリル酸エステル、
エチルメタクリレート、プロピルメタクリレート、イソプロピルメタクリレート、ブチルメタクリレート、アミルメタクリレート、ヘキシルメタクリレート、オクチルメタクリレート、2-エチルヘキシルメタクリレート、シクロヘキシルメタクリレート、ドデシルメタクリレート、オクタデシルメタクリレート、フェニルメタクリレート、ベンジルメタクリレートなどのメタクリル酸エステルが挙げられ、これらから選ばれる1または2以上を使用することができる。
これらの中でもフェニルメタクリレート、フェニルアクリレート、ベンジルメタクリレート、ベンジルアクリレートなどの芳香族(メタ)アクリレートが好ましい。
As a copolymerization component when the component (B) is made into a copolymer,
Acrylate esters such as methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, butyl acrylate, amyl acrylate, hexyl acrylate, octyl acrylate, 2-ethylhexyl acrylate, cyclohexyl acrylate, dodecyl acrylate, octadecyl acrylate, phenyl acrylate, benzyl acrylate,
Examples thereof include methacrylic acid esters such as ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, butyl methacrylate, amyl methacrylate, hexyl methacrylate, octyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, dodecyl methacrylate, octadecyl methacrylate, phenyl methacrylate and benzyl methacrylate. One or two or more selected from can be used.
Among these, aromatic (meth) acrylates such as phenyl methacrylate, phenyl acrylate, benzyl methacrylate and benzyl acrylate are preferable.

(B)成分は、メチルメタクリレート単位と芳香族(メタ)アクリレート単位を含む共重合体が好ましく、メチルメタクリレート単位の割合は、20~95質量%が好ましく、40~95質量%がより好ましく、60~95質量%がさらに好ましく、芳香族(メタ)アクリレート単位の割合は、5~80質量%が好ましく、5~60質量%がより好ましく、5~40質量%がさらに好ましい。 The component (B) is preferably a copolymer containing a methyl methacrylate unit and an aromatic (meth) acrylate unit, and the proportion of the methyl methacrylate unit is preferably 20 to 95% by mass, more preferably 40 to 95% by mass, and 60. The ratio of the aromatic (meth) acrylate unit is more preferably 5 to 80% by mass, more preferably 5 to 60% by mass, still more preferably 5 to 40% by mass.

(B)成分は、ガラス転移点(Tg)が90~120℃のものが好ましく、90~110℃のものがより好ましい。
ガラス転移点(Tg)は、示差走査熱量計(DSC)を用い、窒素気流下、昇温速度20℃/分の条件で測定した値を示す。
(B)成分は、特開2010-116501号公報の特許請求の範囲および実施例などにおいて表面硬度向上剤として記載されている共重合体を使用することができる。
The component (B) preferably has a glass transition point (Tg) of 90 to 120 ° C, more preferably 90 to 110 ° C.
The glass transition point (Tg) indicates a value measured by using a differential scanning calorimeter (DSC) under a nitrogen flow condition and a heating rate of 20 ° C./min.
As the component (B), a copolymer described as a surface hardness improving agent in the claims and examples of JP-A-2010-116501 can be used.

(A)成分と(B)成分の合計量100質量%中の割合は、(A)成分65~93質量%であり、70~90質量%が好ましく、(B)成分7~35質量%であり、10~30質量%が好ましい。 The ratio of the component (A) and the component (B) in the total amount of 100% by mass is 65 to 93% by mass of the component (A), preferably 70 to 90% by mass, and 7 to 35% by mass of the component (B). Yes, 10 to 30% by mass is preferable.

(C)成分のガラス繊維は、公知のEガラス、Cガラス、Sガラス、Dガラスからなるものを使用することができるが、Eガラスからなるガラス繊維が好ましい。
(C)成分のガラス繊維の含有割合は、(A)成分と(B)成分の合計100質量部に対して(C)4~60質量部であり、好ましくは4~50質量部である。
(C)成分のガラス繊維は、組成物から得られる成形体の透明性との関係からは、(C)成分のガラス繊維の含有割合を4~20質量部の範囲に制限して、ポリカーボネート系樹脂組成物から得られる成形体の全光線透過率(ASTMD1003-00)が80%以上になるようにすることもできる。
As the glass fiber of the component (C), known E glass, C glass, S glass, and D glass can be used, but the glass fiber made of E glass is preferable.
The content ratio of the glass fiber of the component (C) is 4 to 60 parts by mass, preferably 4 to 50 parts by mass, based on 100 parts by mass of the total of the component (A) and the component (B).
The glass fiber of the component (C) is polycarbonate-based by limiting the content ratio of the glass fiber of the component (C) to the range of 4 to 20 parts by mass in relation to the transparency of the molded product obtained from the composition. It is also possible to make the total light transmittance (ASTMD1003-00) of the molded product obtained from the resin composition 80% or more.

本発明の組成物は、必要に応じて、特許文献1、2に記載の炭素数15~19の飽和アルコールと炭素数16~22の飽和脂肪酸からなるエステル化合物、特許文献1、2に記載のリン系安定剤などの安定剤を含有することができる。 The composition of the present invention is described in Patent Documents 1 and 2, if necessary, an ester compound composed of a saturated alcohol having 15 to 19 carbon atoms and a saturated fatty acid having 16 to 22 carbon atoms described in Patent Documents 1 and 2. It can contain a stabilizer such as a phosphorus-based stabilizer.

本発明の組成物は、用途に応じて、慣用の添加剤、例えば、他の安定化剤(例えば、酸化防止剤、紫外線吸収剤、耐光安定剤など)、着色剤(染料、顔料など)、帯電防止剤、難燃剤(リン系難燃剤、ハロゲン系難燃剤、無機系難燃剤など)、難燃助剤、架橋剤、核剤、カップリング剤、分散剤、消泡剤、流動化剤、ドリッピング防止剤、抗菌剤、防腐剤、粘度調整剤、増粘剤などを含んでいてもよい。 The compositions of the present invention may contain conventional additives such as other stabilizers (eg, antioxidants, UV absorbers, light retardant stabilizers, etc.), colorants (dye, pigment, etc.), depending on the application. Antistatic agents, flame retardants (phosphorus flame retardants, halogen flame retardants, inorganic flame retardants, etc.), flame retardants, cross-linking agents, nucleating agents, coupling agents, dispersants, defoaming agents, fluidizing agents, It may contain anti-dripping agents, antibacterial agents, preservatives, viscosity modifiers, thickeners and the like.

本発明の組成物は、例えば、各成分をタンブラーミキサー、ヘンシェルミキサー、リボンミキサー、ニーダーなどの混合機を用いて乾式または湿式で混合して調製してもよい。
さらに、前記混合機で予備混合した後、一軸または二軸押出機などの押出機で混練してペレットに調製する方法、加熱ロールやバンバリーミキサーなどの混練機で溶融混練して調製する方法を適用することができる。
The composition of the present invention may be prepared by mixing each component dry or wet using a mixer such as a tumbler mixer, a Henschel mixer, a ribbon mixer, or a kneader.
Further, a method of premixing with the mixer and then kneading with an extruder such as a single-screw or twin-screw extruder to prepare pellets, or a method of melting and kneading with a kneader such as a heating roll or a Banbury mixer is applied. can do.

<ポリカーボネート系樹脂組成物の成形体>
本発明の成形体は、上記したポリカーボネート系樹脂組成物を使用して、射出成形、押出成形、真空成形、異型成形、発泡成形、インジェクションプレス、プレス成形、ブロー成形、ガス注入成形などによって、用途に応じた所望形状の成形体にすることができる。
<Molded product of polycarbonate resin composition>
The molded product of the present invention is used for injection molding, extrusion molding, vacuum molding, profile molding, foam molding, injection press, press molding, blow molding, gas injection molding and the like using the above-mentioned polycarbonate resin composition. It is possible to obtain a molded product having a desired shape according to the above conditions.

本発明の成形体は、全光線透過率(ASTMD1003-00,厚み3mm)が80%以上であるものが好ましく、85%以上であるものがより好ましい。
本発明の成形体は透明度が高く、ポリカーボネート系樹脂組成物に着色剤を含有させることで所望の色(例えば、漆黒、メタリック)に着色することができるため、製品(成形体)の意匠性や美観を向上させることができる。
The molded product of the present invention preferably has a total light transmittance (ASTMD1003-00, thickness 3 mm) of 80% or more, and more preferably 85% or more.
The molded product of the present invention has high transparency and can be colored in a desired color (for example, jet black, metallic) by containing a colorant in the polycarbonate resin composition, so that the design of the product (molded product) can be improved. It can improve the aesthetics.

実施例および比較例
表1、表2に示す配合(質量%、質量部)で各成分を配合し、ヘンシェルミキサーで混合した。
その後、前記混合物を押出機に供給して250℃で溶融混練し、ペレットを得た。
Examples and Comparative Examples Each component was blended in the formulations shown in Tables 1 and 2 (% by mass, parts by mass) and mixed with a Henschel mixer.
Then, the mixture was supplied to an extruder and melt-kneaded at 250 ° C. to obtain pellets.

(成形品の曲げ強度、弾性率の評価)
上記で得られた各組成物のペレットをそれぞれ120℃で3時間乾燥した後に、射出成型機(住友重機械製SH-100)を用いて設定温度270℃、射出圧力200MPaでISO試験法に準じた試験片を作製した。
作製した試験片を用いてISO 178に準じ、曲げ強度、曲げ弾性率を測定した。それらの結果から、曲げ強度が100MPa以上、曲げ弾性率が3000MPa以上を良好とした。
(Evaluation of bending strength and elastic modulus of molded products)
After each pellet of each composition obtained above is dried at 120 ° C. for 3 hours, an injection molding machine (SH-100 manufactured by Sumitomo Heavy Industries) is used at a set temperature of 270 ° C. and an injection pressure of 200 MPa according to the ISO test method. A test piece was prepared.
Bending strength and flexural modulus were measured according to ISO 178 using the prepared test piece. From these results, it was considered that the bending strength was 100 MPa or more and the flexural modulus was 3000 MPa or more.

(成形品の透明性の評価)
上記で得られた各組成物のペレットをそれぞれ120℃で3時間乾燥した後に、射出成型機(住友重機械製SH100)を用いて設定温度270℃、射出圧力200MPaで透明性評価用試験片(50×90×3mmのカラープレート)を作製した。
作製した試験片を用いて、JIS K7361に準じ、透明性評価用試験片の全光線透過率を測定した。得られた結果から70%以上を良好とした。
(Evaluation of transparency of molded products)
After the pellets of each composition obtained above are dried at 120 ° C. for 3 hours, a test piece for transparency evaluation (transparency evaluation test piece) is used at a set temperature of 270 ° C. and an injection pressure of 200 MPa using an injection molding machine (SH100 manufactured by Sumitomo Heavy Industries). A color plate of 50 × 90 × 3 mm) was produced.
Using the prepared test piece, the total light transmittance of the transparency evaluation test piece was measured according to JIS K7361. From the obtained results, 70% or more was considered good.

(成形品の視認性の評価)
上記で得られた各組成物のペレットをそれぞれ120℃で3時間乾燥した後に、射出成型機(住友重機械製SH100)を用いて設定温度270℃、射出圧力200MPaで透明性評価用試験片(50×90×3mmのカラープレート)を作製した。
作成した試験片を新聞紙の上に置き、文字の鮮明度を30cm離れたところから目視評価した。
○:よく見える。
△:ぼんやりと見える。
×:見えにくい。
(Evaluation of visibility of molded products)
After the pellets of each composition obtained above are dried at 120 ° C. for 3 hours, a test piece for transparency evaluation (transparency evaluation test piece) is used at a set temperature of 270 ° C. and an injection pressure of 200 MPa using an injection molding machine (SH100 manufactured by Sumitomo Heavy Industries). A color plate of 50 × 90 × 3 mm) was produced.
The prepared test piece was placed on newspaper, and the sharpness of the characters was visually evaluated from a distance of 30 cm.
○: Looks good.
△: Looks vague.
×: Hard to see.

<使用成分>
(A)成分
PDMS-PC:ポリカーボネート中にシロキサン分子を共重合したシロキサンポリカーボネートコポリマー(出光興産株式会社製,タフロン ネオ RC1760)(粘度平均分子量17000,Si量約6質量%)
(B)成分
表面硬度向上剤:メタクリル酸アリール・メタクリル酸アルキル・アクリル酸アルキル共重合体(三菱レイヨン株式会社製,メタブレン H-880)
(C)成分
ガラス繊維(GF):Eガラス繊維(日本電気硝子株式会社製,ECS03 T-187)
(その他)
酸化防止剤:ホスファイト系酸化防止剤(BASFジャパン株式会社製,IRGAFOS168)
<Ingredients used>
(A) Ingredient
PDMS-PC: A siloxane polycarbonate copolymer in which a siloxane molecule is copolymerized in polycarbonate (manufactured by Idemitsu Kosan Co., Ltd., Toughlon) Neo RC1760) (Viscosity average molecular weight 17000, Si amount about 6% by mass)
(B) Ingredient
Surface hardness improver: aryl methacrylate, alkyl methacrylate, alkyl acrylate copolymer (manufactured by Mitsubishi Rayon Co., Ltd., Metabrene H-880)
(C) Ingredient
Glass fiber (GF): E glass fiber (manufactured by Nippon Electric Glass Co., Ltd., ECS03 T-187)
(others)
Antioxidant: Phosphite-based antioxidant (manufactured by BASF Japan Ltd., IRGAFOS168)

Figure 0007075224000003
Figure 0007075224000003

Figure 0007075224000004
Figure 0007075224000004

表1の実施例に示すように、本発明の構成要件を満足するものについては、要求性能を満たしていた。
一方、表2の比較例に示すように、本発明の構成要件を満足しないものについては、以下のような欠点を有していた。
比較例1は、(C)成分の含有量が少ないため、曲げ強度、曲げ弾性率が不良となった。
比較例2、3は、(A)成分と(B)成分の含有量が外れているため、比較例2は全光線透過率が、比較例3は曲げ強度と視認性が不良となった。
比較例4は、(C)成分の含有量が多いため、全光線透過率と視認性が不良となった。
As shown in the examples of Table 1, those satisfying the constituent requirements of the present invention satisfied the required performance.
On the other hand, as shown in the comparative example of Table 2, those which do not satisfy the constituent requirements of the present invention have the following drawbacks.
In Comparative Example 1, since the content of the component (C) was small, the bending strength and the bending elastic modulus were poor.
In Comparative Examples 2 and 3, since the contents of the component (A) and the component (B) were different, the total light transmittance was poor in Comparative Example 2, and the bending strength and visibility were poor in Comparative Example 3.
In Comparative Example 4, since the content of the component (C) was large, the total light transmittance and the visibility were poor.

本発明のポリカーボネート系樹脂組成物から得られる成形体は、例えば、OA・家電機器分野、電気・電子分野、通信機器分野、サニタリー分野、自動車などの輸送車両分野、家具・建材などの住宅関連分野、雑貨分野などの各パーツ、ハウジングなどに使用することができる。 The molded body obtained from the polycarbonate-based resin composition of the present invention is, for example, an OA / home appliance field, an electric / electronic field, a communication equipment field, a sanitary field, a transportation vehicle field such as an automobile, and a housing-related field such as furniture / building materials. , Can be used for various parts such as miscellaneous goods, housing, etc.

Claims (3)

(A)ポリカーボネート系樹脂と、(B)重量平均分子量5,000~30,000のメチルメタクリレート単位を含む重合体と、(C)ガラス繊維含有しており
前記(A)成分のポリカーボネート系樹脂が、下記一般式(I)で表される繰り返し単位を含むポリカーボネートブロックと、下記一般式(II)で表される繰り返し単位を含むポリオルガノシロキサンブロックとを有する、一分子中のSi量が1~10質量%の範囲であり、粘度平均分子量が10,000~40,000であるポリカーボネート-ポリオルガノシロキサン共重合体であり、
(A)成分と(B)成分の合計量中の(A)成分の含有割合が65~93質量%、(B)成分の含有割合が7~35質量%であり、
さらに(A)成分と(B)成分の合計100質量部に対して、(C)ガラス繊維4~20質量部を含有している、ポリカーボネート系樹脂組成物であって、
前記ポリカーボネート系樹脂組成物から得られる成形体の全光線透過率(ASTMD1003-00)が80%以上である、ポリカーボネート系樹脂組成物。
Figure 0007075224000005

(一般式(I)中、
1 およびR 2 は、それぞれ独立にハロゲン原子、炭素数1~6のアルキル基または炭素数1~6のアルコキシ基を示し、
Xは単結合、炭素数1~8のアルキレン基、炭素数2~8のアルキリデン基、炭素数5~15のシクロアルキレン基、炭素数5~15のシクロアルキリデン基、フルオレンジイル基、炭素数7~15のアリールアルキレン基、炭素数7~15のアリールアルキリデン基、-S-、-SO-、-SO 2 -、-O-またはCO-を示し、
aおよびbは、それぞれ独立に0~4の整数を示す。
一般式(II)中、
3 およびR 4 は、それぞれ独立に水素原子、ハロゲン原子、炭素数1~6のアルキル基、炭素数1~6のアルコキシ基または炭素数6~12のアリール基を示し、
平均繰り返し数nは、ポリオルガノシロキサンブロック中のシロキサン繰り返し単位の合計数を示す。)
It contains (A) a polycarbonate resin, (B) a polymer containing a methyl methacrylate unit having a weight average molecular weight of 5,000 to 30,000, and (C) glass fiber .
The polycarbonate-based resin of the component (A) has a polycarbonate block containing a repeating unit represented by the following general formula (I) and a polyorganosiloxane block containing a repeating unit represented by the following general formula (II). , A polycarbonate-polyorganosiloxane copolymer having a Si content in one molecule in the range of 1 to 10% by mass and a viscosity average molecular weight of 10,000 to 40,000.
The content ratio of the component (A) in the total amount of the component (A) and the component (B) is 65 to 93% by mass, and the content ratio of the component (B) is 7 to 35% by mass.
Further, it is a polycarbonate resin composition containing 4 to 20 parts by mass of (C) glass fiber with respect to 100 parts by mass of the total of the component (A) and the component (B).
A polycarbonate-based resin composition having a total light transmittance (ASTMD1003-00) of 80% or more of a molded product obtained from the polycarbonate-based resin composition.
Figure 0007075224000005

(In general formula (I),
R 1 and R 2 independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 6 carbon atoms, respectively.
X is a single bond, an alkylene group having 1 to 8 carbon atoms, an alkylidene group having 2 to 8 carbon atoms, a cycloalkylene group having 5 to 15 carbon atoms, a cycloalkylidene group having 5 to 15 carbon atoms, a fluorinyl group, and a carbon number of carbon atoms. 7 to 15 arylalkylene groups, 7 to 15 carbon atoms arylalkylidene groups, -S-, -SO-, -SO 2- , -O- or CO- are shown.
a and b each independently represent an integer of 0 to 4.
In general formula (II),
R 3 and R 4 independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, or an aryl group having 6 to 12 carbon atoms.
The average number of repeats n indicates the total number of siloxane repeat units in the polyorganosiloxane block. )
(A)成分の含有割合が70~90質量%、(B)成分の含有割合が10~30質量%、(C)成分の含有割合が(A)成分と(B)成分の合計100質量部に対して4~11質量部である、請求項1記載のポリカーボネート系樹脂組成物。 The content ratio of the component (A) is 70 to 90% by mass, the content ratio of the component (B) is 10 to 30% by mass, and the content ratio of the component (C) is 100 parts by mass in total of the component (A) and the component (B). The polycarbonate-based resin composition according to claim 1, which is 4 to 11 parts by mass with respect to the above. 請求項1または2記載のポリカーボネート系樹脂組成物からなる成形体。
A molded product made of the polycarbonate-based resin composition according to claim 1 or 2 .
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