JPH11181198A - Flowability improver for polycarbonate and polycarbonate resin composition - Google Patents
Flowability improver for polycarbonate and polycarbonate resin compositionInfo
- Publication number
- JPH11181198A JPH11181198A JP21037198A JP21037198A JPH11181198A JP H11181198 A JPH11181198 A JP H11181198A JP 21037198 A JP21037198 A JP 21037198A JP 21037198 A JP21037198 A JP 21037198A JP H11181198 A JPH11181198 A JP H11181198A
- Authority
- JP
- Japan
- Prior art keywords
- polycarbonate
- resin
- styrene
- fluidity
- resin composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリカーボネート
用流動性改質剤および可塑化時の流動性が良好なポリカ
ーボネート樹脂組成物に関する。The present invention relates to a flow modifier for polycarbonate and a polycarbonate resin composition having good flow during plasticization.
【０００２】[0002]
【従来の技術】従来より、ポリカーボネートは透明性が
よく、機械強度、耐熱性に優れることからエンジニアリ
ングプラスチックとして、自動車等の成形部品、電気・
電子関係部品、ＯＡ機器、食品・雑貨などの各種分野に
おいて広く利用されている。しかしながら、ポリカーボ
ネートは、一般に溶融粘度が高いため、溶融成形するに
は高温を要し、変色、酸化、劣化等の種々問題がある。
また、流動性・成形性が悪いことより、大型成形品をつ
くることが困難であったり、逆に薄肉・微細成形品を得
ることが困難であるという問題がある。2. Description of the Related Art Conventionally, polycarbonate has good transparency, excellent mechanical strength and heat resistance.
It is widely used in various fields such as electronic parts, office automation equipment, food and miscellaneous goods. However, since polycarbonate generally has a high melt viscosity, a high temperature is required for melt molding, and there are various problems such as discoloration, oxidation, and deterioration.
Further, there is a problem that it is difficult to produce a large-sized molded product due to poor fluidity and moldability, and it is difficult to obtain a thin-walled / fine molded product.
【０００３】このようなポリカーボネートの流動性・成
形性を改善するため、例えば、特開昭４８−５４１６０
号公報、特開昭４９−１０７３５４号公報、特開昭５３
−１２９２４６号公報、特開昭５４−９４５５６公報、
特開昭５８−８９５５８号公報、特開昭４９−４１４４
２号公報等にはポリカーボネートとポリエステルとのポ
リマーアロイ化が開示されている。しかし、ポリエステ
ルとポリカーボネートは反応するため、成形条件を制限
され、また加熱着色による悪化、さらには外観の悪化、
発泡等の問題点がある。[0003] In order to improve the flowability and moldability of such a polycarbonate, for example, JP-A-48-54160
JP, JP-A-49-107354, JP-A-53-107354
JP-129246, JP-A-54-94556,
JP-A-58-89558, JP-A-49-4144
No. 2 discloses a polymer alloy of a polycarbonate and a polyester. However, since the polyester and the polycarbonate react, the molding conditions are limited, and the deterioration due to heat coloring, and further the deterioration of the appearance,
There are problems such as foaming.
【０００４】また、ポリカーボネートの流動性改善を目
的として、低分子量ポリスチレンを添加することが提案
されている（特開平９−３２８５８９号公報）。しか
し、低分子量ポリスチレンを添加しても、流動性の改善
効果は少なく、また耐熱性を満足せず、臭気等の問題も
ある。また、流動性改善を目的として、ロジン、芳香族
系石油樹脂、ジシクロペンタジエン樹脂、芳香族／ジシ
クロペンタジエン共重合樹脂やクマロン−インデン樹脂
等の低分子量炭化水素樹脂を添加することが考えられ
る。しかし、これらの流動改質剤とポリカーボネートと
は相溶性が良くないためポリカーボネートの特徴である
透明性が低下する問題があったり、流動改質剤の色調が
著しく悪いためにポリカーボネートが着色したりする問
題がある。さらには、低分子量炭化水素樹脂は、ダイマ
ー、トリマー等を含むため臭気の問題がある。同様の目
的で、ポリカーボネート自身の分子量を下げることが行
われている。しかし、ポリカーボネートの流動性は改善
するものの、分子量が下がることにより、耐熱性、耐候
性及び耐薬品性などが低下する問題がある。更には、ポ
リカーボネート−ＡＢＳのアロイにおいても、流動性改
善効果は見られるが、透明性低下と耐熱性低下が著し
い。In order to improve the flowability of polycarbonate, it has been proposed to add low-molecular-weight polystyrene (JP-A-9-328589). However, even if low-molecular-weight polystyrene is added, the effect of improving the fluidity is small, the heat resistance is not satisfied, and there are problems such as odor. For the purpose of improving fluidity, it is conceivable to add a low-molecular-weight hydrocarbon resin such as rosin, aromatic petroleum resin, dicyclopentadiene resin, aromatic / dicyclopentadiene copolymer resin, or cumarone-indene resin. . However, these flow modifiers and polycarbonate have poor compatibility, and thus have a problem that the transparency, which is a characteristic of polycarbonate, is reduced, or the color of the flow modifier is extremely poor, and the polycarbonate is colored. There's a problem. Further, the low molecular weight hydrocarbon resin has a problem of odor because it contains a dimer, a trimer and the like. For the same purpose, the molecular weight of the polycarbonate itself has been reduced. However, although the fluidity of polycarbonate is improved, there is a problem that heat resistance, weather resistance, chemical resistance, and the like are reduced due to a decrease in molecular weight. Furthermore, although the alloy of polycarbonate-ABS also has the effect of improving the fluidity, the transparency and the heat resistance are significantly reduced.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、ポリカーボ
ネートの透明性を損なうことなく、また臭気、耐熱性低
下の問題を伴うことなく、ポリカーボネートの溶融流動
性、成形加工性を改善したポリカーボネート樹脂組成物
を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention provides a polycarbonate resin composition having improved polycarbonate melt flowability and moldability without impairing the transparency of the polycarbonate, and without causing problems of odor and reduced heat resistance. The purpose is to provide things.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、前記従来
技術の課題を解決すべく鋭意検討を重ねた結果、芳香族
ビニル系樹脂の流動性改質作用に着目した。そして、以
下に示すような、特定範囲の重量平均分子量を有する芳
香族ビニル系樹脂を、ポリカーボネート用流動性改質剤
として用いることにより、前記目的を達成できることを
見出し、本発明を完成するに到った。Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems of the prior art, and as a result, have paid attention to the action of improving the fluidity of an aromatic vinyl resin. Then, it has been found that the above-mentioned object can be achieved by using an aromatic vinyl resin having a weight average molecular weight in a specific range as a flowability modifier for polycarbonate as shown below, and completed the present invention. Was.
【０００７】すなわち、本発明は、（１）重量平均分子
量が５０００〜１０００００の芳香族ビニル系樹脂から
なるポリカーボネート用流動性改質剤、さらには（２）
ポリカーボネートおよび前記ポリカーボネート用流動性
改質剤を含有してなるポリカーボネート樹脂組成物に関
する。That is, the present invention provides (1) a fluidity modifier for polycarbonate comprising an aromatic vinyl resin having a weight average molecular weight of 5,000 to 100,000, and (2)
The present invention relates to a polycarbonate resin composition comprising polycarbonate and the above-mentioned flowability modifier for polycarbonate.
【０００８】[0008]
【発明の実施の形態】本発明のポリカーボネート用流動
性改質剤として用いる、芳香族ビニル系樹脂は、芳香族
ビニルの重合体または共重合体である。芳香族ビニルと
しては、たとえばスチレン、αメチルスチレン、ビニル
トルエン、インデン、エチルスチレン、ビニルナフタレ
ン、ビニルアントラセン、ジビニルベンゼン等があげら
れる。これらのなかでも工業的な供給を考慮するとスチ
レンを用いるのが好ましい。BEST MODE FOR CARRYING OUT THE INVENTION The aromatic vinyl resin used as the flow modifier for polycarbonate of the present invention is a polymer or copolymer of aromatic vinyl. Examples of the aromatic vinyl include styrene, α-methylstyrene, vinyltoluene, indene, ethylstyrene, vinylnaphthalene, vinylanthracene, divinylbenzene and the like. Among them, styrene is preferably used in view of industrial supply.
【０００９】芳香族ビニル系樹脂の製法は特に制限され
ず、芳香族ビニルを重合または共重合することにより得
られる。重合方法は、ラジカル重合、カチオン重合、ア
ニオン重合などの各種の重合形式を採用でき、また重合
方式も、塊状重合、溶液重合、懸濁重合、乳化重合等の
各種の方法を採用できる。また、重合時に使用する重合
開始剤も重合形式や方式に合致するものであれば特に限
定されない。The method for producing the aromatic vinyl resin is not particularly limited, and is obtained by polymerizing or copolymerizing aromatic vinyl. As the polymerization method, various types of polymerization such as radical polymerization, cationic polymerization, and anionic polymerization can be adopted, and various polymerization methods such as bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization can be employed. Further, the polymerization initiator used at the time of polymerization is not particularly limited as long as it matches the polymerization mode and system.
【００１０】芳香族ビニル系樹脂を具体例としては、た
とえば、スチレン、αメチルスチレンスチレン、ｏ−メ
チルスチレン、ｍ−メチルスチレン、ｐ−メチルスチレ
ン、エチルスチレン、イソプロペニルトルエン、イソブ
チルスチレン、ｔｅｒｔ−ブチルスチレン、ビニルナフ
タレン、等の単独重合物または、スチレン−αメチルス
チレンの共重合物等の２種以上の芳香族ビニル系モノマ
ーの共重合物等があげられるが、本発明の芳香族ビニル
系樹脂はこれらに限定されるものではない。Specific examples of aromatic vinyl resins include, for example, styrene, α-methylstyrene styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, ethylstyrene, isopropenyltoluene, isobutylstyrene, tert- Homopolymers such as butylstyrene and vinylnaphthalene, and copolymers of two or more aromatic vinyl monomers such as a copolymer of styrene-α-methylstyrene, and the like. The resin is not limited to these.
【００１１】また、芳香族ビニル系樹脂は、重量平均分
子量が５０００〜１０００００のものを用いる。重量平
均分子量が１０００００を超えると、流動性改質効果が
低くなる。重量平均分子量は大きくなるほど溶融粘度が
高くなり、流動性改質効果が低くなくことから、重量平
均分子量８００００以下とするのが好ましい。一方、重
量平均分子量が５０００よりも低くなると流動性が悪く
なる。この原因については正確なところは不明である
が、重量平均分子量が小さくなるとポリカーボネートと
の相溶性が向上し過ぎる為であろうと推測できる。また
重量平均分子量が低くなると、ダイマー、トリマー等の
低分子量物が相対的に多くなるため、ポリカーボネート
が有する耐熱性、剛性等の種々の性能を低下させ、また
成形時の発煙、ミスト、機械汚れ、フィッシュアイ等の
問題が発生する可能性が高くなるため、重量平均分子量
の下限は５０００とするのが好ましい。かかる重量平均
分子量はゲルパーミュエーションクロマトグラフィーに
よるポリスチレン換算によるものである。なお、本発明
の芳香族ビニル系樹脂の軟化点は特に限定されないが、
一般的には軟化点１２０℃〜２００℃程度のものが使用
される。The aromatic vinyl resin having a weight average molecular weight of 5,000 to 100,000 is used. When the weight average molecular weight exceeds 100,000, the fluidity modifying effect is reduced. As the weight average molecular weight increases, the melt viscosity increases, and the fluidity modifying effect is not low. Therefore, the weight average molecular weight is preferably 80,000 or less. On the other hand, when the weight average molecular weight is lower than 5000, the fluidity becomes poor. Although the exact cause is unknown, it can be assumed that if the weight average molecular weight is too small, the compatibility with the polycarbonate will be too high. Also, when the weight average molecular weight is low, the amount of low molecular weight substances such as dimers and trimers is relatively large, so that various properties such as heat resistance and rigidity of polycarbonate are reduced, and smoke, mist, and mechanical stains during molding are also reduced. Therefore, the lower limit of the weight average molecular weight is preferably set to 5,000 because the possibility of occurrence of problems such as fish eye and the like increases. The weight average molecular weight is based on polystyrene conversion by gel permeation chromatography. The softening point of the aromatic vinyl resin of the present invention is not particularly limited,
Generally, those having a softening point of about 120 ° C to 200 ° C are used.
【００１２】かかる芳香族ビニル系樹脂からなる本発明
のポリカーボネート用流動性改質剤はポリカーボネート
に配合し、流動性を改質したポリカーボネート樹脂組成
物を提供する。ポリカーボネート用流動性改質剤の使用
量は、通常、ポリカーボネート１００重量部に対し、
０．１〜１００重量部程度である。ポリカーボネート用
流動性改質剤の使用量は、溶融流動の向上効果の点から
は１重量部以上とするのが好ましく、またポリカーボネ
ートが本来有する耐熱性、剛性等種々の性能を維持する
には５０重量部以下とするのが好ましい。ポリカーボネ
ートとしては各種のものを使用できる。重量平均分子量
は、通常、１００００〜１０００００程度のものが好ま
しい。The flowability modifier for polycarbonate of the present invention comprising the aromatic vinyl resin is blended with polycarbonate to provide a polycarbonate resin composition having improved flowability. The amount of the flow modifier for polycarbonate used is usually 100 parts by weight of polycarbonate.
It is about 0.1 to 100 parts by weight. The amount of the flowability modifier for polycarbonate is preferably 1 part by weight or more from the viewpoint of the effect of improving the melt flow. In order to maintain various performances such as heat resistance and rigidity inherent to polycarbonate, it is 50 parts by weight. It is preferred that the amount be not more than part by weight. Various polycarbonates can be used. Usually, the weight average molecular weight is preferably about 10,000 to 100,000.
【００１３】なお、本発明のポリカーボネート用流動性
改質剤とポリカーボネートを混合して樹脂組成物を製造
する方法は、特に制限されず、公知の方法を採用するこ
とができる。すなわち、ペレット、粉末または砕片状態
のポリカーボネートおよび流動性改質剤を、高速撹拌機
等を用いて均一混合した後、十分な混練能力のある一軸
または多軸の押出し機で溶融混練する方法、またはバン
バリーミキサーやゴムロール機を用いて溶融混練する方
法等を採用することができる。The method of producing the resin composition by mixing the polycarbonate fluidity modifier of the present invention and polycarbonate is not particularly limited, and a known method can be employed. That is, pellets, powder or flakes of polycarbonate and fluidity modifier, after uniformly mixed using a high-speed stirrer or the like, a method of melt-kneading with a single-screw or multi-screw extruder with sufficient kneading ability, or A method of melting and kneading using a Banbury mixer or a rubber roll machine or the like can be employed.
【００１４】さらに、本発明のポリカーボネート樹脂組
成物には、各種の添加剤、例えば顔料や染料、ガラス繊
維、金属繊維、金属フレーク、炭素繊維等の補強材や充
填材、熱安定剤、酸化防止剤、紫外線吸収剤、光安定
剤、塑剤、可塑剤、帯電防止剤や難燃剤等を添加でき
る。Further, various additives such as pigments and dyes, reinforcing materials and fillers such as glass fibers, metal fibers, metal flakes and carbon fibers, heat stabilizers, antioxidants, etc. Agents, ultraviolet absorbers, light stabilizers, plasticizers, plasticizers, antistatic agents, flame retardants, and the like.
【００１５】[0015]
【発明の効果】本発明によれば、ポリカーボネートの透
明性を損なうことなく、また臭気等の問題を伴うことな
く、ポリカーボネートの溶融流動性、成形加工性を改善
したポリカーボネート樹脂組成物を提供することができ
る。また、本発明のポリカーボネート樹脂組成物は、ガ
ラス繊維、金属繊維、金属フレーク、炭素繊維等の補強
材や充填材を配合した場合にも溶融流動性向上効果に優
れる。According to the present invention, there is provided a polycarbonate resin composition having improved polycarbonate melt flowability and moldability without impairing the transparency of the polycarbonate and without problems such as odor. Can be. Moreover, the polycarbonate resin composition of the present invention is excellent in the effect of improving the melt fluidity even when a reinforcing material such as glass fiber, metal fiber, metal flake, or carbon fiber or a filler is blended.
【００１６】[0016]
【実施例】以下、実施例および比較例により本発明をさ
らに具体的に説明するが、本発明はこれらに限定される
ものではない。The present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to these examples.
【００１７】実施例１ ２リットルのセパラブルフラスコに、トルエン１８０ｇ
を仕込んだ後、スチレン３００ｇを加えた後、アゾビス
イソブチロニトリル（以下、ＡＩＢＮという）７．５ｇ
を添加した。約３０分窒素をバブリングしながら系内を
窒素置換した後に、８０℃まで昇温し、３０分間前重合
をおこなった。その後、スチレン３００ｇ及びＡＩＢＮ
７．５ｇを、トルエン１８０ｇに溶解した溶液を一時間
かけて滴下した。その間温度が８５℃±５℃の範囲にな
るよう調整した。滴下終了後、温度を８５℃±５℃の範
囲に調整しながら、７時間重合を継続した。その後、加
熱・減圧しながら溶媒を留去し、最終的に２４０℃、１
０ｔｏｒｒ、２０分間減圧蒸留して、５３０ｇのスチレ
ン重合体を得た。得られたスチレン重合体の物性を表１
に示す。Example 1 180 g of toluene was placed in a 2-liter separable flask.
After adding 300 g of styrene, 7.5 g of azobisisobutyronitrile (hereinafter referred to as AIBN) was added.
Was added. After replacing the inside of the system with nitrogen while bubbling nitrogen for about 30 minutes, the temperature was raised to 80 ° C., and prepolymerization was performed for 30 minutes. Then, 300g of styrene and AIBN
A solution in which 7.5 g was dissolved in 180 g of toluene was added dropwise over 1 hour. During that time, the temperature was adjusted so as to be in a range of 85 ° C. ± 5 ° C. After completion of the dropwise addition, the polymerization was continued for 7 hours while adjusting the temperature to a range of 85 ° C. ± 5 ° C. Thereafter, the solvent is distilled off while heating and reducing the pressure.
The residue was distilled under reduced pressure at 0 torr for 20 minutes to obtain 530 g of a styrene polymer. Table 1 shows the physical properties of the obtained styrene polymer.
Shown in
【００１８】実施例２ 実施例１において、仕込および滴下したスチレン量をそ
れぞれ３４０ｇに、トルエン量をそれぞれ１４０ｇに、
及びＡＩＢＮ量をそれぞれ４ｇに変えた他は実施例１と
同様の操作を行いスチレン重合体を得た。得られたスチ
レン重合体の物性を表１に示す。Example 2 In Example 1, the amount of styrene charged and dropped was 340 g and the amount of toluene was 140 g, respectively.
A styrene polymer was obtained in the same manner as in Example 1 except that the amount of AIBN was changed to 4 g. Table 1 shows the physical properties of the obtained styrene polymer.
【００１９】実施例３ 実施例１において、仕込および滴下したＡＩＢＮ量をそ
れぞれ１５ｇに変えた他は実施例１と同様の操作を行い
スチレン重合体を得た。得られたスチレン重合体の物性
を表１に示す。Example 3 A styrene polymer was obtained in the same manner as in Example 1 except that the amount of AIBN charged and dropped was changed to 15 g, respectively. Table 1 shows the physical properties of the obtained styrene polymer.
【００２０】比較例１ ２リットルのセパラブルフラスコにトルエン６００ｇ、
スチレン６００ｇを仕込んだ後、系内を２０分間窒素置
換した。窒素気流下において、系内温度を２０℃に保ち
ながら重合触媒三フッ化ホウ素・エーテル錯体９ｇを３
０分かけて系内に滴下した。その後、２０℃で４時間保
温し、重合反応をおこなった。反応終了後、反応溶液を
分液ロートに移し、１％水酸化ナトリウム５００ｇ水溶
液で触媒を失活させた。アルカリ溶液を抜き出した後、
ｐＨが７になるまで、５００ｍｌの水で４回水洗した。
洗浄水を抜き出した後、硫酸マグネシュウムでトルエン
溶液を乾燥させた。乾燥剤を濾過分別した後、溶液を減
圧蒸留し、５５０ｇのオリゴスチレンを得た。蒸発条件
は最終的に２２０℃、１０ｔｏｒｒ、１５分であった。
得られたオリゴスチレンの物性を表１に示す。Comparative Example 1 600 g of toluene was placed in a 2-liter separable flask.
After charging 600 g of styrene, the system was purged with nitrogen for 20 minutes. Under a nitrogen stream, 9 g of the boron trifluoride-ether complex was added to 3 g of the polymerization catalyst while maintaining the system temperature at 20 ° C.
It was dropped into the system over 0 minutes. Thereafter, the temperature was kept at 20 ° C. for 4 hours to carry out a polymerization reaction. After the completion of the reaction, the reaction solution was transferred to a separating funnel, and the catalyst was deactivated with a 500 g aqueous solution of 1% sodium hydroxide. After extracting the alkaline solution,
The mixture was washed four times with 500 ml of water until the pH reached 7.
After draining the washing water, the toluene solution was dried with magnesium sulfate. After the drying agent was separated by filtration, the solution was distilled under reduced pressure to obtain 550 g of oligostyrene. The evaporation conditions were finally 220 ° C., 10 torr and 15 minutes.
Table 1 shows the physical properties of the obtained oligostyrene.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１中、比較例２はポリスチレン（旭化成
工業（株）製ＧＰＰＳ：スタイロン６６６）、比較例３
は水素化石油樹脂（荒川化学工業（株）製：アルコンＭ
−１１５）の物性を示す。軟化点の測定は環球法によ
る。なお、比較例２のポリスチレンは、高分子量のため
測定できなかった。ガラス転移点の測定は、ＤＳＣ（セ
イコー電子工業（株）製）による。５％加熱減量温度の
測定は、ＴＧ／ＤＴＡ（セイコー電子工業（株）製，Ｓ
ＳＣ−５２００）による。なお、５％加熱減量温度と
は、試料の５重量％が熱分解により減少したときの温度
をいい、耐熱性を特長とするエンジニアリングプラスチ
ックでは成形加工温度が２５０℃以上の場合が多いこと
から５％加熱減量温度が３００℃以上であることが好ま
しい。In Table 1, Comparative Example 2 is polystyrene (GPPS: Stylon 666 manufactured by Asahi Kasei Corporation) and Comparative Example 3
Is hydrogenated petroleum resin (Arakawa Chemical Industries, Ltd .: Alcon M)
-115). The softening point is measured by the ring and ball method. In addition, polystyrene of Comparative Example 2 could not be measured because of its high molecular weight. The glass transition point is measured by DSC (manufactured by Seiko Denshi Kogyo KK). The measurement of the 5% heating weight loss temperature is performed using TG / DTA (Seiko Electronics Co., Ltd., S
SC-5200). The 5% heating weight loss temperature refers to the temperature at which 5% by weight of the sample is reduced by thermal decomposition, and since engineering plastics having heat resistance often have a molding temperature of 250 ° C. or higher, 5% The% heating loss temperature is preferably 300 ° C. or higher.
【００２３】（ポリカーボネート樹脂組成物の製造）実
施例１〜３または比較例１〜３で得られた各種スチレン
重合体（ポリカーボネート用流動性改質剤）２５０ｇと
ポリカーボネート（商品名ユーピロンＳ−２０００，三
菱エンジニアリングプラスチックス（株）製）４７５０
ｇをドライブレンドした後に、２８０℃の条件で二軸反
応押出し機により押出し混練し、ポリカーボネート樹脂
組成物のペレットとした。得られたペレットについて以
下の評価を行なった。なお比較例３としてポリカーボネ
ートに流動性改質剤を入れていない例、比較例４として
高流動タイプポリカーボネート（商品名ユーピロンＨ−
４０００，三菱エンジニアリングプラスチックス（株）
製）単独の例及び比較例６にポリカーボネート−ＡＢＳ
アロイ（商品名サイコロイＣ−１１００，日本ジーイー
プラスチックス（株）製）単独の例についても同様にペ
レットを作成し評価した。評価結果を表２に示す。(Production of Polycarbonate Resin Composition) 250 g of various styrene polymers (fluidity modifier for polycarbonate) obtained in Examples 1 to 3 or Comparative Examples 1 to 3 and polycarbonate (Iupilon S-2000, trade name) 4750, manufactured by Mitsubishi Engineering-Plastics Corporation
g was dry-blended and then extruded and kneaded with a twin-screw extruder at 280 ° C. to obtain pellets of the polycarbonate resin composition. The following evaluation was performed about the obtained pellet. Comparative Example 3 was an example in which a fluidity modifier was not added to polycarbonate, and Comparative Example 4 was a high-flow type polycarbonate (trade name Iupilon H-
4000, Mitsubishi Engineering Plastics Co., Ltd.
Polycarbonate-ABS in Examples and Comparative Example 6
In the case of an alloy (trade name: Psychoroy C-1100, manufactured by Nippon GE Plastics Co., Ltd.) alone, pellets were similarly prepared and evaluated. Table 2 shows the evaluation results.
【００２４】（流動性）得られたペレットを用いて、２
８０℃の射出条件で、幅２ｃｍ、厚さ１ｍｍのアルキメ
デス渦巻き型金型に射出圧力１４３５ｋｇ／ｃｍ2、１
８４５ｋｇ／ｃｍ2で射出し、その流動長（ｃｍ）を測
定することにより評価した。流動長が長い方が流動性良
好である。(Fluidity) Using the obtained pellets, 2
Under an injection condition of 80 ° C., an injection pressure of 1435 kg / cm 2 , 1 cm is applied to an Archimedes spiral mold having a width of 2 cm and a thickness of 1 mm.
It was injected at 845 kg / cm 2 and evaluated by measuring its flow length (cm). The longer the flow length, the better the flowability.
【００２５】（耐熱性）得られたペレットを用いて、２
８０℃の射出条件で、荷重たわみ試験片を作成した。Ｊ
ＩＳ Ｋ ７２０７に従い荷重たわみ温度を測定した。(Heat resistance) Using the obtained pellets,
Under the injection condition of 80 ° C., a load deflection test piece was prepared. J
The deflection temperature under load was measured according to IS K 7207.
【００２６】（透明性）上記試験片を目視し、成形物の
透明性を評価した。透明なものを○、若干白濁が認めら
れたものを△、白濁し透明性を失ったものを×とした。(Transparency) The test pieces were visually observed to evaluate the transparency of the molded products. Transparent ones were evaluated as ○, slight turbidity was recognized as △, and opaque ones that lost transparency were evaluated as ×.
【００２７】（臭気、発煙）射出時における臭気、発煙
を官能評価した。ほとんど臭気発煙の無い物を○、やや
臭気発煙を生ずるもの△、臭気発煙の著しいもの×とし
た。(Odor and smoke) Sensory evaluation of odor and smoke at the time of injection was performed. A substance with almost no odor smoke was rated as ○, a substance with slight odor smoke, and a × with remarkable odor smoke.
【００２８】[0028]
【表２】 [Table 2]
【００２９】表２から、実施例１〜２記載の本発明の流
動性改質剤を添加したポリカーボネート樹脂組成物は、
流動性、透明性、耐熱性、臭気・発煙に優れることが認
められる。これに対し、比較例１は流動性が悪く、ガラ
ス転移点、分子量が低いため耐熱性、臭気等も満足でき
ていない。比較例２は流動性、透明性が悪い。また、比
較例３の水素化石油樹脂は、極性基を有しないため透明
性が悪く、ガラス転移点、分子量が低いため耐熱性、臭
気等も満足できていない。From Table 2, the polycarbonate resin compositions to which the fluidity modifiers of the present invention described in Examples 1 and 2 were added were as follows:
Excellent fluidity, transparency, heat resistance, odor and smoke are recognized. On the other hand, in Comparative Example 1, the fluidity was poor, and the glass transition point and the molecular weight were low, so that heat resistance, odor, and the like were not satisfactory. Comparative Example 2 has poor fluidity and transparency. Further, the hydrogenated petroleum resin of Comparative Example 3 does not have a polar group and thus has poor transparency, and has a low glass transition point and a low molecular weight, and thus does not satisfy heat resistance and odor.
Claims (3)
０の芳香族ビニル系樹脂からなるポリカーボネート用流
動性改質剤。(1) a weight average molecular weight of 5,000 to 10,000
A fluidity modifier for polycarbonate comprising an aromatic vinyl-based resin.
ポリカーボネート用流動性改質剤を含有してなるポリカ
ーボネート樹脂組成物。2. A polycarbonate resin composition comprising a polycarbonate and the fluidity modifier for polycarbonate according to claim 1.
ポリカーボネート用流動性改質剤０．１〜１００重量部
を含有してなる請求項２記載のポリカーボネート樹脂組
成物。3. 100 parts by weight of polycarbonate,
The polycarbonate resin composition according to claim 2, comprising 0.1 to 100 parts by weight of a flowability modifier for polycarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21037198A JPH11181198A (en) | 1997-10-13 | 1998-07-08 | Flowability improver for polycarbonate and polycarbonate resin composition |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29615097 | 1997-10-13 | ||
| JP9-296150 | 1997-10-13 | ||
| JP21037198A JPH11181198A (en) | 1997-10-13 | 1998-07-08 | Flowability improver for polycarbonate and polycarbonate resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11181198A true JPH11181198A (en) | 1999-07-06 |
Family
ID=26518015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21037198A Pending JPH11181198A (en) | 1997-10-13 | 1998-07-08 | Flowability improver for polycarbonate and polycarbonate resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11181198A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009104321A1 (en) * | 2008-02-18 | 2009-08-27 | 住友ダウ株式会社 | Polycarbonate resin composition and molded article for optical use made from the same |
| WO2012157766A1 (en) | 2011-05-19 | 2012-11-22 | 三菱瓦斯化学株式会社 | Polycarbonate copolymer having high fluidity, method for producing aromatic polycarbonate resin having high molecular weight, and aromatic polycarbonate compound |
| KR101537655B1 (en) * | 2012-10-24 | 2015-07-17 | 주식회사 엘지화학 | Polycarbonate resin composition |
-
1998
- 1998-07-08 JP JP21037198A patent/JPH11181198A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009104321A1 (en) * | 2008-02-18 | 2009-08-27 | 住友ダウ株式会社 | Polycarbonate resin composition and molded article for optical use made from the same |
| JP2010031219A (en) * | 2008-02-18 | 2010-02-12 | Sumitomo Dow Ltd | Polycarbonate resin composition and molded article for optical use made from the same |
| WO2012157766A1 (en) | 2011-05-19 | 2012-11-22 | 三菱瓦斯化学株式会社 | Polycarbonate copolymer having high fluidity, method for producing aromatic polycarbonate resin having high molecular weight, and aromatic polycarbonate compound |
| KR20140035412A (en) | 2011-05-19 | 2014-03-21 | 미츠비시 가스 가가쿠 가부시키가이샤 | Polycarbonate copolymer having high fluidity, method for producing aromatic polycarbonate resin having high molecular weight, and aromatic polycarbonate compound |
| US9353216B2 (en) | 2011-05-19 | 2016-05-31 | Mitsubishi Gas Chemical Company, Inc. | High-fluidity polycarbonate copolymer, process for production highly polymerized aromatic polycarbonate resin and aromatic polycarbonate compound |
| US10053537B2 (en) | 2011-05-19 | 2018-08-21 | Mitsubishi Gas Chemical Company, Inc. | High-fluidity polycarbonate copolymer, process for production highly polymerized aromatic polycarbonate resin and aromatic polycarbonate compound |
| KR101537655B1 (en) * | 2012-10-24 | 2015-07-17 | 주식회사 엘지화학 | Polycarbonate resin composition |
| US9493649B2 (en) | 2012-10-24 | 2016-11-15 | Lg Chem, Ltd. | Polycarbonate resin composition |
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