JPS6397650A - Heat-resistant resin composition - Google Patents

Heat-resistant resin composition

Info

Publication number
JPS6397650A
JPS6397650A JP61243169A JP24316986A JPS6397650A JP S6397650 A JPS6397650 A JP S6397650A JP 61243169 A JP61243169 A JP 61243169A JP 24316986 A JP24316986 A JP 24316986A JP S6397650 A JPS6397650 A JP S6397650A
Authority
JP
Japan
Prior art keywords
methylstyrene
acrylonitrile
aromatic polyester
alpha
heat
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.)
Granted
Application number
JP61243169A
Other languages
Japanese (ja)
Other versions
JPH0739521B2 (en
Inventor
Kyosuke Komiya
強介 小宮
Masahisa Yokota
昌久 横田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP61243169A priority Critical patent/JPH0739521B2/en
Publication of JPS6397650A publication Critical patent/JPS6397650A/en
Publication of JPH0739521B2 publication Critical patent/JPH0739521B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To provide a resin compsn. which is transparent, excellent in heat resistance and suitable for use in the production of an optical disc, etc., by blending a specified arom. polyester with a styrene polymer having both alpha- methylstyrene and acrylonitrile units as comonomer units. CONSTITUTION:An arom. polyester (A) of formula I (wherein n is a degree of polymn.) is mixed with a styrene polymer (B) having both alpha-methylstyrene and acrylonitrile units as comonomer units to obtain the desired heat-resistance resin compsn. Examples of the component B are alpha-methylstyrene/acrylonitrile copolymers, alpha-methylstyrene/styrene/acrylonitrile terpolymers, etc. Copolymers where the content of acrylonitrile is at least 15wt%, a weight ratio of alpha- methylstyrene to acrylonitrile is 1.5 or higher and that of alpha-methylstyrene to styrene is 1.8 or higher are preferred.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、特定の芳香族ポリエステルと、特定のスチレ
ン系樹脂とをブレンドして得られる耐熱性樹脂組成物に
関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a heat-resistant resin composition obtained by blending a specific aromatic polyester and a specific styrene resin.

さらに詳しくは、一般式(1) (ただし、nは重合度を衣わす) で六わす芳香族ポリエステルと、α−メチルスチレン及
びアクリロニトリルを共1合成分として會むスチレン系
共重合体をブレンドして得られる樹脂組成物に関する。
More specifically, an aromatic polyester represented by the general formula (1) (where n affects the degree of polymerization) is blended with a styrenic copolymer containing α-methylstyrene and acrylonitrile as one component. The present invention relates to a resin composition obtained by

本発明の組成物は、選明でかつ高い耐熱性を有しており
、例えば光ディスク等の光学材料として有用である。
The composition of the present invention is selective and has high heat resistance, and is useful, for example, as an optical material for optical discs and the like.

(従来の技術) 一般式(2) (ただし、nは重合度を表わす) (式中、Xは、−CH2−1−C(CH5)z−1−0
−1−C−1−S−1−802−等の2価の基、Rは、
H1−CH3、−C2H5、(衿等を示す)で戎わされ
る芳香族ポリエステルは、透明性、耐熱性、機械特性等
に優れたポリマーであり、特にXが−C(CH3)2−
1かつRがすべて水素であるタイプは、工業的にも製造
され、広く用いられている。これらの特性を生かして他
の種々のポリマーとブレンドする研究も数多くなされて
いる。しかし通常、他のポリマーとブレンドすると、充
分な相溶性を有していないため、機械的強度は低下し、
透明な樹脂は得られない。また機械的強度の低下がない
場合でも透明な樹脂が得られるケースはまれである。
(Prior art) General formula (2) (where n represents the degree of polymerization) (wherein, X is -CH2-1-C(CH5)z-1-0
A divalent group such as -1-C-1-S-1-802-, R is
Aromatic polyesters with H1-CH3, -C2H5, (representing collars, etc.) are polymers with excellent transparency, heat resistance, mechanical properties, etc. Especially when X is -C(CH3)2-
The type in which 1 and R are all hydrogen is industrially produced and widely used. Many studies have been conducted to take advantage of these properties and blend them with various other polymers. However, when blended with other polymers, the mechanical strength usually decreases due to insufficient compatibility.
Transparent resin cannot be obtained. Furthermore, even when there is no decrease in mechanical strength, it is rare that a transparent resin can be obtained.

本出願人は、先に特願昭61−157981号において
、前記一般式(1)で異わされる芳香族ポリエステルと
AS11脂をブレンドすることによって上記の問題を解
決し、透明で充分な機械的強度を有する組成物が得られ
ることを開示した。しかしながら、この組成物は特に芳
香族ポリエステルの組成が低い場合、充分な耐熱性を有
しているとはいえず、用途(例えば書換え形の光デイス
ク基板等)によっては使用が制限される場合があった。
The present applicant previously solved the above problem in Japanese Patent Application No. 157981/1981 by blending the aromatic polyester represented by the general formula (1) with AS11 resin, and obtained a transparent and sufficient machine. It has been disclosed that a composition having a high physical strength can be obtained. However, this composition cannot be said to have sufficient heat resistance, especially when the composition of aromatic polyester is low, and its use may be limited depending on the application (for example, rewritable optical disk substrates, etc.). there were.

(発明が解決しようとする問題点) 本発明の目的は、特願昭61−157981号における
、芳香族ポリエステルとABifR脂をブレンドした組
成物の特徴である透明性を生かし、かつ充分な耐熱性を
付与することにより、檀々の光学材料等に有用な組成物
を得ることである。
(Problems to be Solved by the Invention) The object of the present invention is to take advantage of the transparency characteristic of the composition of blended aromatic polyester and ABifR resin as disclosed in Japanese Patent Application No. 157981/1981, and to have sufficient heat resistance. The purpose is to obtain a composition useful for various optical materials and the like.

(問題点を解決するための手段) 本発明者等は、上記問題点を解決すべく鋭意検討した結
果、前記一般式(りで表わされる芳香族ポリエステルは
、α−メチルスチレン及びアクリロニトリルを共重合成
分として含むスチレン系重合体と透明にブレンドするこ
とが可能であり、かつこのブレンドポリマーが優れた耐
熱性を有することを見出し本発明に至った。
(Means for Solving the Problems) As a result of intensive studies to solve the above problems, the present inventors found that the aromatic polyester represented by the general formula The inventors have discovered that it is possible to transparently blend the blended polymer with the styrenic polymer contained as a component, and that this blended polymer has excellent heat resistance, leading to the present invention.

即ち、本発明は、一般式(1) (ただし、nは重合度を表わす) で巽わされる芳香族ポリエステルと、α−メチルスチレ
ン及びアクリロニトリルを共1合成分として含むスチレ
ン系重合体をブレンドして得られる耐熱性樹脂組成物で
ある。
That is, the present invention blends an aromatic polyester represented by the general formula (1) (where n represents the degree of polymerization) and a styrenic polymer containing both α-methylstyrene and acrylonitrile as one component. This is a heat-resistant resin composition obtained by

本発明において、α−メチルスチレンとアクリロニトリ
ルを含むスチレン系重合体と芳香族ポリエステルを透明
にブレンドするためには、芳香族ポリエステルが一般式
(1)の構造であることが必須要件である。例えば、一
般式(1)のベンゼン核に置換したメチル基が水素とな
った場合、あるいは、−802−基を−CH2−基や一
〇(CH3)2−基に変えた場合には、本発明の如き、
充分な透明性を得ることはできない。
In the present invention, in order to transparently blend a styrenic polymer containing α-methylstyrene and acrylonitrile with an aromatic polyester, it is essential that the aromatic polyester has the structure of general formula (1). For example, when the methyl group substituted on the benzene nucleus in general formula (1) becomes hydrogen, or when the -802- group is changed to -CH2- group or 10(CH3)2- group, the Like an invention,
It is not possible to obtain sufficient transparency.

本発明において芳香族ポリエステル含量は1〜99m1
1:%であるが、特願昭61−157981号の組成物
に対する耐熱性の改善効果という点では、特に50重量
%以下の場合が有利である。
In the present invention, the aromatic polyester content is 1 to 99ml
1:%, but from the viewpoint of improving the heat resistance of the composition of Japanese Patent Application No. 61-157981, a content of 50% by weight or less is particularly advantageous.

一般式(1)の芳香族ポリエステルは、ビス−(3゜5
−ジメチル4−ヒドロキシフェニル)スルホンをジオー
ル成分とし、イソフタル酸、テレフタル酸及びそれらの
機能誘導体(テレフタル酸クロリド等)をジカルざン駿
成分とし、公知の重縮合法により得ることができる。ジ
カルボン酸成分としては、テレフタル酸とイソフタル酸
またはその機能誘導体を組合わせて用いることが物性上
好ましい。重合方法は、界面1縮合法、浴液重合法、治
融1合法等、通常芳香族ポリエステルt−X合する方法
から選ぶことができる。
The aromatic polyester of general formula (1) is bis-(3゜5
-dimethyl 4-hydroxyphenyl) sulfone as the diol component, isophthalic acid, terephthalic acid, and their functional derivatives (terephthalic acid chloride, etc.) as the dicarzantine component, and can be obtained by a known polycondensation method. As the dicarboxylic acid component, it is preferable to use a combination of terephthalic acid and isophthalic acid or a functional derivative thereof in terms of physical properties. The polymerization method can be selected from methods such as an interfacial condensation method, a bath liquid polymerization method, and a melting method, which usually involve t-X polymerization of aromatic polyesters.

本発明に用いるα−メチルスチレン及びアクリロニトリ
ルを共重合成分として含むスチレン系共重合体において
、アクリロニトリル組成は、15Xt*以上であること
が好ましい。また、アクリロニトリルに対するα−メチ
ルスチレンの量は、重量比で1.5以上であることが好
ましく、かつスチレンに対するα−メチルスチレンの量
は重量比で1.8以上であることが好ましい。また、ス
チレン系重合体は、通常α−メチルスチレン/アクリロ
ニトリル2元共重合体、または、α−メチルスチレン/
スチレン/アクリ四ニトリル6元共重合体が用いられる
が、ポリマーの物性改善等を目的として、その他の成分
、例えばメチルメタクリレートやメタクリロニトリル等
♂少量加えることも可能である。重合は、塊状重合法、
乳化1合法、懸濁重合法等、公知の方法で行なわれる。
In the styrenic copolymer containing α-methylstyrene and acrylonitrile as copolymerization components used in the present invention, the acrylonitrile composition is preferably 15Xt* or more. Further, the amount of α-methylstyrene to acrylonitrile is preferably 1.5 or more by weight, and the amount of α-methylstyrene to styrene is preferably 1.8 or more by weight. The styrenic polymer is usually α-methylstyrene/acrylonitrile binary copolymer or α-methylstyrene/acrylonitrile binary copolymer.
Although a styrene/acrytetranitrile 6-element copolymer is used, small amounts of other components such as methyl methacrylate and methacrylonitrile may also be added for the purpose of improving the physical properties of the polymer. Polymerization is carried out by bulk polymerization method,
This can be carried out by a known method such as an emulsification method or a suspension polymerization method.

この際目的に応じて適尚な分子量が選ばれる。At this time, an appropriate molecular weight is selected depending on the purpose.

芳香族ポリエステルとスチレン系1合体との混合は、両
者を共通に溶解する溶媒、例えは塩化メチレン等で浴液
ブレンドする方法を用いることができる。押出機やロー
ルなどで溶融混合する場合には、ポリマーの熱分解を抑
える条件を設定する必要がある。
The aromatic polyester and the styrene-based monomer can be mixed using a bath liquid blending method using a solvent that commonly dissolves both, such as methylene chloride. When melt-mixing is performed using an extruder or roll, it is necessary to set conditions that suppress thermal decomposition of the polymer.

本発明の組成物には、酸化防止剤、耐光安定剤、難燃剤
等の添加剤を加え、更に特性を向上させることも可能で
ある。
It is also possible to add additives such as antioxidants, light stabilizers, and flame retardants to the composition of the present invention to further improve its properties.

また、本発明の組成物と相浴性の高いポリマーをさらに
ブレンドして用いることも可能である。
It is also possible to further blend the composition of the present invention with a polymer having high compatibility with the composition.

例えば、本発明の組成物とAs樹脂の組合わせによって
透明な組成物を得ることができる。
For example, a transparent composition can be obtained by combining the composition of the present invention and an As resin.

(発明の効果) 本発明により、透明なブレンドポリマーが得られること
のメリットは、例えば光学用途に用いた場合、複屈折を
低減できるという点である。芳香族ポリエステルにスチ
レン系樹脂をブレンドした場合、あるいは、スチレン系
樹脂に芳香族ポリエステルをブレンドした場合、いずれ
も単品のポリマーよりも低複屈折とすることができる。
(Effects of the Invention) The advantage of obtaining a transparent blend polymer according to the present invention is that, for example, when used for optical purposes, birefringence can be reduced. When a styrene resin is blended with an aromatic polyester, or when an aromatic polyester is blended with a styrene resin, the birefringence can be lowered than that of a single polymer.

本発明の組成物と、特顔昭61−157981号の組成
物のTgあるいは熱変形温度を同一芳香族ポリエステル
含量で比較すると、明らかに前者の方が高く、特に芳香
族ポリエステルの含量が50W1 %以下の場合、その
差は大きい。光学材料として本発明の組成物を使用する
場合、芳香族ポリエステル含量を5QWt、%以下にす
ることはコストを下げ、また複屈折を小さくするという
点で好ましく、従ってこの範囲で特に高い耐熱性を有す
ることは本発明の大きなメリットと言える。
Comparing the Tg or heat distortion temperature of the composition of the present invention and the composition of Tokugan Sho 61-157981 with the same aromatic polyester content, the former is clearly higher, especially when the aromatic polyester content is 50W1%. The difference is large in the following cases. When using the composition of the present invention as an optical material, it is preferable to reduce the aromatic polyester content to 5QWt.% or less in terms of lowering costs and reducing birefringence, and therefore particularly high heat resistance is achieved within this range. This can be said to be a great advantage of the present invention.

また、本発明の組成物は、光学用途に用いることができ
るだけでなく、その耐熱性等を生かし、光学用途以外の
分野でエンジニアリングプラスチックとして使用するこ
とも可能である。
Furthermore, the composition of the present invention can not only be used for optical purposes, but also take advantage of its heat resistance and other properties to be used as an engineering plastic in fields other than optical purposes.

(実施例) 以下、実施例によりさらに詳細に説明するが、本発明の
内容は実施例のみに限定されるものではない。
(Examples) Hereinafter, the present invention will be explained in more detail with reference to Examples, but the content of the present invention is not limited only to the Examples.

実施例1 芳香族ポリエステルの製造 51の四つロフラスコ内で、N2気流下、ヒス−(4−
ヒドロ中シー3,5ゾメチルフェニル)スルホン155
g、95%の水酸化ナトリウム48.3 g、チオ硫酸
ソーダ6.6yを1650!Illの水に均一に溶解し
た後、氷冷する。一方、テレフタル酸クロリドとイソフ
タル酸りロリド各44.79とトリオクチルメチルアン
モニウムクロライド3.6gを600118の塩化メチ
レンに溶解させ、上記水浴液にすみやかに添加する。水
浴中、激しく攪拌しながら2時間反応させた後、酢酸1
76尼を添加してさらに15分間攪拌を続ける。塩化メ
チレン層を数回水洗後、過剰のアセトン中に注ぎポリマ
ーを析出させる。得られたポリマーの1景平均分子量を
GPCで測定したところ、ポリスチレン換算でsi o
ooであった。
Example 1 Production of aromatic polyester His-(4-
3,5-zomethylphenyl) sulfone 155
g, 95% sodium hydroxide 48.3 g, sodium thiosulfate 6.6y 1650! After uniformly dissolving in 100 ml of water, cool on ice. On the other hand, 44.79 g each of terephthalic acid chloride, isophthalic acid chloride, and 3.6 g of trioctylmethylammonium chloride are dissolved in 600118 methylene chloride, and promptly added to the above water bath liquid. After reacting for 2 hours with vigorous stirring in a water bath, acetic acid 1
Add 76 ml and continue stirring for an additional 15 minutes. After washing the methylene chloride layer several times with water, it is poured into excess acetone to precipitate the polymer. When the single view average molecular weight of the obtained polymer was measured by GPC, it was found that sio
It was oo.

組成物の製造及び試験 前記で得られた芳香族ポリエステル肌8fIと一般に知
られた乳化1合法で得られたスチレン系樹脂(AN/α
−メチルスチレン/スチレン=20/65/15;i量
比) 0.2 gとを1Qmlの塩化メチレンに均一に
俗解させた後、内径90間の平底シャーレ上に流延し自
然乾燥させて厚さ120μmの透明なフィルムを得た。
Manufacture and testing of composition The aromatic polyester skin 8fI obtained above and the styrene resin (AN/α
- Methylstyrene/styrene = 20/65/15; i amount ratio) 0.2 g was uniformly dissolved in 1Qml of methylene chloride, and then cast onto a flat-bottomed petri dish with an inner diameter of 90 mm and air-dried to give a thick A transparent film with a diameter of 120 μm was obtained.

このフィルムの熱変形温度を、RHEOVIBRON 
−DDV −II −E A (東洋ボールドウィン製
)を用い、動的粘弾性が急激に低下し始める温度として
測定した。結果を第1衣に示す。
The heat distortion temperature of this film is RHEOVIBRON
-DDV-II-E A (manufactured by Toyo Baldwin), and was measured as the temperature at which the dynamic viscoelasticity began to decrease rapidly. The results are shown in Figure 1.

実施例2〜5 芳香族ポリエステルとスチレン系樹脂の配合割合(重量
比)を60/40(実施例2)、40/60(実施例3
)、20/80 (実施例4)、5/95(実施例5)
に変化させる以外はすべて実施例1と同様にしてフィル
ムを製造した。得られたフィルムはいずれも透明であっ
た。これらのフィルムの熱変形温度を実施例1と同様の
方法で測定した結果を第1我に示す。
Examples 2 to 5 The blending ratio (weight ratio) of aromatic polyester and styrene resin was 60/40 (Example 2) and 40/60 (Example 3).
), 20/80 (Example 4), 5/95 (Example 5)
A film was produced in the same manner as in Example 1 except that the film was changed to . All of the obtained films were transparent. The heat distortion temperatures of these films were measured in the same manner as in Example 1, and the results are shown in Part 1.

比較例1〜4 実施例1で用いたスチレン系樹脂のかわりにA8樹脂(
ポリマー中のアクリロニトリル組成が29Wz%)を用
いる以外は、実施例1と同様の方法でフィルムを作製し
た。同様に芳香族ポリエステルとAS樹脂の配合割合を
重量比で60/40(比較例2)、40/6G(比較例
3)、20780(比較例4)と変化させてフィルムを
作製した。
Comparative Examples 1 to 4 A8 resin (
A film was produced in the same manner as in Example 1, except that the acrylonitrile composition in the polymer was 29 Wz%. Similarly, films were produced by changing the weight ratio of aromatic polyester and AS resin to 60/40 (Comparative Example 2), 40/6G (Comparative Example 3), and 20780 (Comparative Example 4).

得られたフィルムの熱変形温度を実施例1と同様の方法
で測定した結果を第1表に示す。
The heat distortion temperature of the obtained film was measured in the same manner as in Example 1, and the results are shown in Table 1.

tlXx表 実施例6 スチレン系樹脂として、ムN/α−メチルスチレン=2
5/7B(重量比)を用い、芳香族ポリエステルとスチ
レン系樹脂の配合割合を重量比で20/80とする他は
、実施例1と同様な方法でフィルムを作製した。得られ
たフィルムは透明であった。
tlXx Table Example 6 As styrene resin, MuN/α-methylstyrene = 2
A film was produced in the same manner as in Example 1, except that 5/7B (weight ratio) was used and the blending ratio of aromatic polyester and styrene resin was 20/80 in weight ratio. The resulting film was transparent.

このフィルムの熱変形温度を実施例1と同様に測定した
結果、131℃であった。
The heat distortion temperature of this film was measured in the same manner as in Example 1 and was found to be 131°C.

実施例7 スチレン系樹脂として、AN/α−メチルスチレン/ス
チレン=35/20/45重量比)1−用い、芳香族ポ
リエステルとスチレン系樹脂の配合割合f、i量比で4
0760とする以外は、実施例1と同様な方法でフィル
ムを作製した。
Example 7 As the styrene resin, AN/α-methylstyrene/styrene = 35/20/45 weight ratio) was used, and the blending ratio of aromatic polyester and styrene resin was f and the amount ratio of i was 4.
A film was produced in the same manner as in Example 1 except that 0760 was used.

得られたフィルムの熱変形温度を実施例1と同様に測定
した結果、129°Cであった。
The heat distortion temperature of the obtained film was measured in the same manner as in Example 1 and was found to be 129°C.

Claims (3)

【特許請求の範囲】[Claims] (1)一般式(1) ▲数式、化学式、表等があります▼ (ただし、nは重合度を表わす) で表わされる芳香族ポリエステルと、α−メチルスチレ
ン及びアクリロニトリルを共重合成分として含むスチレ
ン系重合体をブレンドして得られる耐熱性樹脂組成物
(1) General formula (1) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (where n represents the degree of polymerization) A styrenic system containing an aromatic polyester represented by, α-methylstyrene and acrylonitrile as copolymerization components Heat-resistant resin composition obtained by blending polymers
(2)スチレン系共重合体中のアクリロニトリル組成が
15重量%以上であり、かつアクリロニトリルに対する
α−メチルスチレンの量が重量比で1.5以上であり、
かつスチレンに対するα−メチルスチレンの量が重量比
で1.8以上であるスチレン系共重合体を用いることを
特徴とする特許請求の範囲第1項記載の耐熱性樹脂組成
(2) the acrylonitrile composition in the styrenic copolymer is 15% by weight or more, and the weight ratio of α-methylstyrene to acrylonitrile is 1.5 or more;
The heat-resistant resin composition according to claim 1, characterized in that a styrenic copolymer is used in which the weight ratio of α-methylstyrene to styrene is 1.8 or more.
(3)一般式(1)の芳香族ポリエステルが50重量%
以下である特許請求の範囲第1項記載の耐熱性樹脂組成
(3) 50% by weight of aromatic polyester of general formula (1)
The heat-resistant resin composition according to claim 1, which is the following:
JP61243169A 1986-10-15 1986-10-15 Heat resistant resin composition Expired - Fee Related JPH0739521B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61243169A JPH0739521B2 (en) 1986-10-15 1986-10-15 Heat resistant resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61243169A JPH0739521B2 (en) 1986-10-15 1986-10-15 Heat resistant resin composition

Publications (2)

Publication Number Publication Date
JPS6397650A true JPS6397650A (en) 1988-04-28
JPH0739521B2 JPH0739521B2 (en) 1995-05-01

Family

ID=17099838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61243169A Expired - Fee Related JPH0739521B2 (en) 1986-10-15 1986-10-15 Heat resistant resin composition

Country Status (1)

Country Link
JP (1) JPH0739521B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677718A (en) * 1992-06-04 1997-10-14 Tektronix, Inc. Drop-on-demand ink jet print head having improved purging performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677718A (en) * 1992-06-04 1997-10-14 Tektronix, Inc. Drop-on-demand ink jet print head having improved purging performance

Also Published As

Publication number Publication date
JPH0739521B2 (en) 1995-05-01

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