JP2501561B2 - Optical disc material - Google Patents
Optical disc materialInfo
- Publication number
- JP2501561B2 JP2501561B2 JP61164682A JP16468286A JP2501561B2 JP 2501561 B2 JP2501561 B2 JP 2501561B2 JP 61164682 A JP61164682 A JP 61164682A JP 16468286 A JP16468286 A JP 16468286A JP 2501561 B2 JP2501561 B2 JP 2501561B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- monomer
- copolymer
- vinyl monomer
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は光学ディスク材料に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical disc material.
更に詳しくは耐熱性および透明性に優れかつ複屈折が
小さい光学ディスク材料に関するものである。More specifically, the present invention relates to an optical disk material having excellent heat resistance and transparency and a small birefringence.
近年プラスチック材料の光学素子用材料としての需要
が拡大しつつあり光学素子用材料として現在ポリメチル
メタクリレート、ポリスチレン、ポリカーボネート等の
透明性樹脂が用いられているがいずれも耐熱性、寸法安
定性に難がある。In recent years, the demand for plastic materials as optical element materials is expanding, and transparent resins such as polymethylmethacrylate, polystyrene, and polycarbonate are currently used as optical element materials, but all have difficulty in heat resistance and dimensional stability. There is.
光学ディスク材料に要求される特性は環境条件下での
寸法安定性、耐熱性が必要である。The properties required of the optical disc material are dimensional stability under environmental conditions and heat resistance.
射出成形用光学ディスク基板に現在もっとも多く使用
されている材料はポリメチルメタクリレート樹脂であ
る。ポリカーボネート樹脂も実用されているが大形ディ
スクには不向きであり耐熱は優れるものの成形性が悪
く、成形歪による複屈折が大きいという問題がある。Polymethylmethacrylate resin is currently the most commonly used material for optical disk substrates for injection molding. Polycarbonate resins are also in practical use, but they are unsuitable for large discs and have excellent heat resistance, but have poor moldability and large birefringence due to molding strain.
ポリメチルメタクリレート及びポリスチレンは成形性
は優れているが耐熱性が劣り高温条件下での使用に耐え
ない。また特にポリメチルメタクリレートは光学的特性
では非常に優れているものの吸湿による伸びが大きいこ
と、片側に反射膜を設けたとき大きく反ること、レーザ
ー光の熱エネルギーによりフォーカス面が変形する欠点
がある。Polymethylmethacrylate and polystyrene have excellent moldability, but have poor heat resistance and cannot withstand use under high temperature conditions. In addition, polymethylmethacrylate is particularly excellent in optical properties, but has a drawback that it has a large elongation due to moisture absorption, it greatly warps when a reflecting film is provided on one side, and the focus surface is deformed by the thermal energy of laser light. .
本発明者らは上記欠点を解決することを目的として検
討した結果、特定の組成を有するイミド化共重合体と芳
香族ビニル単量体及びシアン化ビニル単量体からなる共
重合体とを組合せることにより耐熱性、透明性及び成形
性に優れ、しかも複屈折の小さな光学ディスク材料が得
られることを見出した。As a result of studies aimed at solving the above-mentioned drawbacks, the present inventors have combined an imidized copolymer having a specific composition with a copolymer composed of an aromatic vinyl monomer and a vinyl cyanide monomer. It was found that by doing so, an optical disk material having excellent heat resistance, transparency and moldability and having a small birefringence can be obtained.
すなわち本発明は、 （Ａ）成分：芳香族ビニル単量体残基30〜79重量％、 Ｎ−フェニルマレイミド単量体残基20〜60重量％、 無水マレイン酸単量体残基１〜10重量％およびこれら以
外のビニル単量体残基０〜40重量％からなるイミド化共
重合体10〜90重量部と、 （Ｂ）成分：芳香族ビニル単量体40〜80重量％、 シアン化ビニル単量体０〜40重量％及びこれら以外のビ
ニル単量体残基０〜40重量％からなる共重合体10〜90重
量部 からなることを特徴とする光学ディスク材料を提供する
ものである。That is, the present invention relates to (A) component: aromatic vinyl monomer residue 30 to 79% by weight, N-phenylmaleimide monomer residue 20 to 60% by weight, maleic anhydride monomer residue 1 to 10 10 to 90 parts by weight of an imidized copolymer consisting of 0 to 40% by weight of vinyl monomer residues other than these, and (B) component: 40 to 80% by weight of aromatic vinyl monomer, cyanated The present invention provides an optical disk material comprising 10 to 90 parts by weight of a copolymer composed of 0 to 40% by weight of a vinyl monomer and 0 to 40% by weight of a residue of a vinyl monomer other than these. .
本発明において光学ディスクとは具体的にはビデオデ
ィスク、オーディオディスク、およびファイル用ディス
ク等がある。In the present invention, the optical disc specifically includes a video disc, an audio disc, a file disc, and the like.
まず（Ａ）成分のイミド化共重合体およびその製法を
説明する。First, the imidized copolymer as the component (A) and a method for producing the same will be described.
（Ａ）成分のイミド化共重合体の製法としては、第１
の製法として芳香族ビニル単量体、Ｎ−フェニルマレイ
ミド単量体及び無水マレイン酸単量体及びこれらの単量
体と共重合可能なビニル単量体の混合物を共重合させる
方法、第２の製法として芳香族ビニル単量体、無水マレ
イン酸単量体及びこれらの単量体と共重合可能なビニル
単量体の混合物を共重合させた重合体に該重合体中の酸
無水物基に対しアニリンを反応させて酸無水物基の一部
をイミド基に変換させる方法が挙げられ、いずれの方法
によってもイミド化共重合体を得ることができる。The method for producing the imidized copolymer of the component (A) is as follows:
A method of copolymerizing an aromatic vinyl monomer, an N-phenylmaleimide monomer, a maleic anhydride monomer, and a mixture of vinyl monomers copolymerizable with these monomers. As a production method, an aromatic vinyl monomer, a maleic anhydride monomer and a polymer obtained by copolymerizing a mixture of vinyl monomers copolymerizable with these monomers are added to the acid anhydride group in the polymer. There may be mentioned a method of reacting with aniline to convert a part of the acid anhydride group into an imide group, and an imidized copolymer can be obtained by any method.
（Ａ）成分のイミド化共重合体第１の製法に使用され
る芳香族ビニル単量体としてはスチレン、α−メチルス
チレン、ビニルトルエン、ｔ−ブチルスチレン、クロロ
スチレン等のスチレン系単量体およびその置換単量体で
あり、これらの中でスチレンが特に好ましい。The aromatic vinyl monomer used in the first production method of the imidized copolymer (A) is a styrene-based monomer such as styrene, α-methylstyrene, vinyltoluene, t-butylstyrene or chlorostyrene. And styrene as a substitution monomer thereof, of which styrene is particularly preferable.
また、第２の製法に使用される芳香族ビニル単量体は
前記の第１の製法に使用されるものが使用できる。As the aromatic vinyl monomer used in the second production method, the one used in the first production method can be used.
また、第１及び第２の製法において、芳香族ビニル単
量体、無水マレイン酸単量体及びＮ−フェニルマレイミ
ド単量体と共重合可能なビニル単量体としては、アクリ
ロニトリル、メタクリロニトリル、α−クロロアクリロ
ニトリル等のシアン化ビニル単量体、メチルアクリル酸
エステル、エチルアクリル酸エステル等のアクチル酸エ
ステル単量体、メチルメタクリル酸エステル、エチルメ
タクリル酸エステル等のメタクリル酸エステル単量体、
アクリル酸、メタクリル酸等のビニルカルボン酸単量
体、アクリル酸アミド、メタクリル酸アミド等があって
これらの中でアクリロニトリル、メタクリル酸エステ
ル、アクリル酸、メタクリル酸などの単量体が好まし
い。Further, in the first and second production methods, as the vinyl monomer copolymerizable with the aromatic vinyl monomer, the maleic anhydride monomer and the N-phenylmaleimide monomer, acrylonitrile, methacrylonitrile, Vinyl cyanide monomer such as α-chloroacrylonitrile, methacrylic acid ester monomer such as methyl acrylic acid ester and ethyl acrylic acid ester, methacrylic acid ester monomer such as methyl methacrylic acid ester and ethyl methacrylic acid ester,
There are vinylcarboxylic acid monomers such as acrylic acid and methacrylic acid, and acrylic acid amides and methacrylic acid amides. Among these, acrylonitrile, methacrylic acid ester, acrylic acid and methacrylic acid are preferred.
第２の製法において、イミド化反応を溶液状態又は懸
濁状態で行う場合は、通常の反応容器、例えばオートク
レーブなどを用いるのが好ましく、塊状溶融状態で行う
場合は脱揮装置の付いた押出機を用いてもよい。またイ
ミド化する際に溶媒を存在させてもよく、例えば第３級
アミン等が好ましく用いられる。In the second production method, when the imidization reaction is carried out in a solution state or a suspension state, it is preferable to use an ordinary reaction vessel, for example, an autoclave, and when it is carried out in a bulk molten state, an extruder equipped with a devolatilization device is used. May be used. A solvent may be present during imidization, and for example, a tertiary amine or the like is preferably used.
イミド化反応の温度は、約80〜350℃であり、好まし
くは100〜300℃である。80℃未満の場合には反応速度が
遅く、反応に長時間を要し実用的でない。一方350℃を
越える場合には重合体の熱分解による物性低下をきた
す。The temperature of the imidization reaction is about 80 to 350 ° C, preferably 100 to 300 ° C. If the temperature is lower than 80 ° C, the reaction rate is slow and the reaction takes a long time, which is not practical. On the other hand, when the temperature exceeds 350 ° C, the physical properties are deteriorated due to thermal decomposition of the polymer.
第２の製法において、酸無水物残基量の調整は酸無水
物基に対して添加するアニリンのモル当量によって行わ
れる。In the second production method, the amount of acid anhydride residue is adjusted by the molar equivalent of aniline added to the acid anhydride group.
溶液状態でイミド化する場合の溶剤としては、アセト
ン、メチルエチルケトン、メチルイソブチルケトン、ア
セトフェノン、テトラヒドロフラン、ジメチルホルムア
ミド等がありこれらの中でメチルエチルケトン、メチル
イソブチルケトンが好ましい。非水性媒体中での懸濁状
態でイミド化する時の非水性媒体にはヘプタン、ヘキサ
ン、ペンタン、オクタン、２−メチルペンタン、シクロ
ペンタン、シクロヘキサン等の脂肪族炭化水素がある。As the solvent for imidization in a solution state, there are acetone, methyl ethyl ketone, methyl isobutyl ketone, acetophenone, tetrahydrofuran, dimethylformamide and the like. Among these, methyl ethyl ketone and methyl isobutyl ketone are preferable. The non-aqueous medium used for imidization in suspension in a non-aqueous medium includes aliphatic hydrocarbons such as heptane, hexane, pentane, octane, 2-methylpentane, cyclopentane and cyclohexane.
（Ａ）成分のイミド化共重合体は、芳香族ビニル単量
体30〜79重量％、好ましくは40〜75重量％、 Ｎ−フェニルマレイミド単量体残基20〜60重量％、好
ましくは25〜55重量％、無水マレイン酸単量体残基１〜
10重量％、好ましくは１〜５重量％、およびこれらと共
重合可能なビニル単量体残基０〜40重量％、好ましくは
０〜30重量％からなるイミド化共重合体であり、芳香族
ビニル単量体残基の量が30重量％未満であると成形性及
び寸法安定性が損われ、79重量％を越えると衝撃強度及
び耐熱性が損われる。Ｎ−フェニルマレイミド単量体残
基の量が20重量％未満の場合は耐熱性改良の効果が十分
でなく、一方60重量％を越えると樹脂組成物が脆くなり
成形性も著しく悪くなる。無水マレイン酸単量体残基の
量が10重量％を越えると熱安定性及び耐熱水性が低下し
好ましくない。１重量％未満の場合は成形性が劣る。こ
れらと共重合可能なビニル単量体残基の量が40重量％を
越えると寸法安定性及び耐熱性が損われる。The imidized copolymer of the component (A) is an aromatic vinyl monomer 30 to 79% by weight, preferably 40 to 75% by weight, an N-phenylmaleimide monomer residue 20 to 60% by weight, preferably 25 ~ 55 wt%, maleic anhydride monomer residue 1 ~
An imidized copolymer comprising 10% by weight, preferably 1 to 5% by weight, and 0 to 40% by weight, preferably 0 to 30% by weight of a vinyl monomer residue copolymerizable therewith, When the amount of the vinyl monomer residue is less than 30% by weight, moldability and dimensional stability are impaired, and when it exceeds 79% by weight, impact strength and heat resistance are impaired. When the amount of the N-phenylmaleimide monomer residue is less than 20% by weight, the effect of improving the heat resistance is not sufficient, while when it exceeds 60% by weight, the resin composition becomes brittle and the moldability is significantly deteriorated. If the amount of the maleic anhydride monomer residue exceeds 10% by weight, thermal stability and hot water resistance are deteriorated, which is not preferable. If it is less than 1% by weight, the moldability is poor. If the amount of the vinyl monomer residue copolymerizable with these exceeds 40% by weight, dimensional stability and heat resistance will be impaired.
次に（Ｂ）成分について説明する。 Next, the component (B) will be described.
（Ｂ）成分に用いられる芳香族ビニル単量体としては
スチレン、α−メチルスチレン、ビニルトルエン、ｔ−
ブチルスチレン、クロロスチレン等のスチレン単量体お
よびその置換単量体であり、これらの中でスチレンおよ
びα−メチルスチレンが特に好ましい。As the aromatic vinyl monomer used as the component (B), styrene, α-methylstyrene, vinyltoluene, t-
It is a styrene monomer such as butyl styrene or chlorostyrene and a substituted monomer thereof, and among these, styrene and α-methylstyrene are particularly preferable.
シアン化ビニル単量体としてはアクリロニトリル、メ
タクリロニトリル、α−クロロアクリロニトリル等があ
り、特にアクリロニトリルが好ましい。これらと共重合
可能なビニル単量体としてはメチルアクリル酸エステ
ル、エチルアクリル酸エステル、ブチルアクリル酸エス
テル等のアクリル酸エステル単量体、メチルメタクリル
酸エステル、エチルメタクリル酸エステル等のメタクリ
ル酸エステル単量体、アクリルィ酸、メタクリル酸等の
ビニルカルボン酸単量体、アクリル酸アミド、メタクリ
ル酸アミド等があげられる。Examples of the vinyl cyanide monomer include acrylonitrile, methacrylonitrile, α-chloroacrylonitrile and the like, and acrylonitrile is particularly preferable. Vinyl monomers copolymerizable with them include acrylic acid ester monomers such as methyl acrylic acid ester, ethyl acrylic acid ester and butyl acrylic acid ester, and methacrylic acid ester monomers such as methyl methacrylic acid ester and ethyl methacrylic acid ester. Examples thereof include monomers, vinylcarboxylic acid monomers such as acrylic acid and methacrylic acid, acrylic acid amide, and methacrylic acid amide.
本発明の光学ディスク材料は上記（Ａ）成分と（Ｂ）
成分からなる樹脂組成物であって、この組成物を製造す
るための（Ａ）成分と（Ｂ）成分の混合法は特に制限は
なく公知の手段を使用することができる。例えばバンバ
リーミキサー、タンブラーミキサー、混合ロール、１軸
又は２軸押出機等があげられる。The optical disc material of the present invention comprises the above-mentioned component (A) and (B).
There is no particular limitation on the mixing method of the component (A) and the component (B) for producing the composition, and a known means can be used. Examples thereof include a Banbury mixer, a tumbler mixer, a mixing roll, a single-screw or twin-screw extruder, and the like.
混合形態としては通常の溶融混合、マスターペレット
等を用いる多段溶融混合、溶液のブレンド等がある。Examples of the mixing form include normal melt mixing, multistage melt mixing using master pellets, and solution blending.
以下本発明を実施例によって説明する。 The present invention will be described below with reference to examples.
なお実施例中の部、％はいずれも重量基準で表わし
た。All parts and% in the examples are expressed on a weight basis.
実験例（１） 芳香族ビニル単量体と無水マレイン酸を
重合させた共重合体をイミド化した重合体の製造 撹拌機を備えたオートクレーブ中にスチレン60部、メ
チルエチルケトン50部を仕込み、系内を窒素ガスで置換
した後温度を85℃に昇温し、無水マレイン酸40部とベン
ゾイルパーオキサイド0.15部をメチルエチルケトン250
部に溶解した溶液を８時間で連続的に添加した。添加後
さらに３時間温度を85℃に保った。粘調な反応液の一部
をサンプリングしてガスクロマトグラフィーにより重合
率の定量を行った結果、スチレン99％、無水マレイン酸
99％であった。ここで得られた共重合体溶液に無水マレ
イン酸に対して0.90モル当量のアニリン34部、トリエチ
ルアミン0.3部を加え、140℃で７時間反応させた。反応
溶液にメチルエチルケトン200部を加え、室温まで冷却
し、激しく撹拌したメタノール1500部に注ぎ、析出、濾
別、乾燥しイミド化共重合体を得た。Ｃ−13NMR分析よ
り無水マレイン酸単量体残基は3.1重量％であった。こ
れを重合体（Ａ）とした。Experimental Example (1) Manufacture of a polymer in which a copolymer obtained by polymerizing an aromatic vinyl monomer and maleic anhydride was imidized. 60 parts of styrene and 50 parts of methyl ethyl ketone were charged in an autoclave equipped with a stirrer, and the system was cooled. Was replaced with nitrogen gas and then the temperature was raised to 85 ° C., and 40 parts of maleic anhydride and 0.15 part of benzoyl peroxide were mixed with 250 parts of methyl ethyl ketone.
The solution dissolved in 1 part was continuously added over 8 hours. The temperature was maintained at 85 ° C for a further 3 hours after the addition. A part of the viscous reaction liquid was sampled and the polymerization rate was quantified by gas chromatography. As a result, styrene 99%, maleic anhydride
It was 99%. 34 parts of aniline and 0.3 part of triethylamine, 0.90 molar equivalents to maleic anhydride, were added to the copolymer solution obtained here, and the mixture was reacted at 140 ° C. for 7 hours. 200 parts of methyl ethyl ketone was added to the reaction solution, cooled to room temperature, poured into 1500 parts of vigorously stirred methanol, precipitated, separated by filtration and dried to obtain an imidized copolymer. From C-13 NMR analysis, the maleic anhydride monomer residue was 3.1% by weight. This was designated as a polymer (A).
実験例（２） 芳香族ビニル単量体とＮ−フェニルマレ
イミド単量体と無水マレイン酸を重合させた共重合体の
製造 撹拌機を備えたオートクレーブ中にスチレン50部、メ
チルエチルケトン50部を仕込み、系内を窒素ガスで置換
した後温度を85℃に昇温し、Ｎ−フェニルマレイミド47
部、無水マレイン酸３部、ベンゾイルパーオキサイド0.
15部をメチルエチルケトン250部に溶解した溶液を８時
間で連続的に添加した。添加後さらに３時間温度を85℃
に保った。重合率はスチレン99％、Ｎ−フェニルマレイ
ミド98％、無水マレイン酸99％であった。この重合体を
メタノール析出しイミド化共重合体を得た。これを重合
体（Ｂ）とした。Experimental Example (2) Production of Copolymer of Aromatic Vinyl Monomer, N-Phenylmaleimide Monomer, and Maleic Anhydride Polymerized 50 parts of styrene and 50 parts of methyl ethyl ketone were charged into an autoclave equipped with a stirrer. After substituting the inside of the system with nitrogen gas, the temperature was raised to 85 ° C., and N-phenylmaleimide 47
Parts, maleic anhydride 3 parts, benzoyl peroxide 0.
A solution of 15 parts dissolved in 250 parts methyl ethyl ketone was added continuously over 8 hours. Addition temperature for 3 hours after addition 85 ℃
Kept at. The polymerization rate was 99% styrene, 98% N-phenylmaleimide, and 99% maleic anhydride. This polymer was precipitated with methanol to obtain an imidized copolymer. This was designated as a polymer (B).
実験例（３） 芳香族ビニル、無水マレイン酸及びこれ
らと共重合可能なビニル単量体を重合させた共重合体を
イミド化した重合体の製造 実験（１）のスチレン60部の代わりにスチレン60部と
アクリロニトリル10部を用い、無水マレイン酸40部を30
部にし、実験例（１）と同様に共重合体を得た。この重
合体の重合率はスチレン98％、無水マレイン酸98％であ
った。Experimental Example (3) Production of a polymer obtained by imidizing a copolymer obtained by polymerizing aromatic vinyl, maleic anhydride and a vinyl monomer copolymerizable therewith, styrene was used instead of 60 parts of styrene in Experiment (1). Using 60 parts and 10 parts of acrylonitrile, 30 parts of 40 parts of maleic anhydride
And a copolymer was obtained in the same manner as in Experimental Example (1). The polymerization rate of this polymer was 98% styrene and 98% maleic anhydride.
ここで得られた共重合体溶液にアニリン26部、を使用
した以外は実験例（１）と同じ操作を行ないイミド化共
重合体を得た。これを重合体（Ｃ）とした。The same operation as in Experimental Example (1) was performed except that 26 parts of aniline was used in the copolymer solution obtained here to obtain an imidized copolymer. This was designated as a polymer (C).
実験例（４） スチレン−アクリロニトリル共重合体の
製造 アクリロニトリル30部、スチレン70部、ステアリン酸
ソーダ2.5部、ｔ−ドデシルメルカプタン0.6部及び水25
0部を70℃まで加熱し、これに過硫酸カリウム0.05部を
添加し重合を開始させた。重合開始から５時間後にさら
に過硫酸カリウム0.03部を添加し、温度を75℃に昇温し
て３時間保ち、重合を完結させた。得られたラテックス
を塩化カルシウムで凝固し水洗、乾燥後、白色粉末の共
重合体を得、これをAS樹脂と表示した。Experimental Example (4) Production of styrene-acrylonitrile copolymer Acrylonitrile 30 parts, styrene 70 parts, sodium stearate 2.5 parts, t-dodecyl mercaptan 0.6 parts and water 25
0 part was heated to 70 ° C., and 0.05 part of potassium persulfate was added to initiate polymerization. Five hours after the initiation of the polymerization, 0.03 part of potassium persulfate was further added, and the temperature was raised to 75 ° C. and maintained for 3 hours to complete the polymerization. The obtained latex was coagulated with calcium chloride, washed with water and dried to obtain a white powder copolymer, which was designated as AS resin.
実施例１〜３ 実験例（１）〜（３）で得られた重合体60部及び実験
例（４）で得られたAS樹脂40部をブレンドしこの混合物
を260℃でベント付押出機で押出しペレット化後260℃で
射出成形し厚さ1.2mm、直径120mmのディスクを成形し評
価した。結果を第１表に示す。Examples 1 to 3 60 parts of the polymer obtained in Experimental Examples (1) to (3) and 40 parts of the AS resin obtained in Experimental Example (4) were blended, and this mixture was heated at 260 ° C. in a vented extruder. After extrusion pelletization, injection molding was performed at 260 ° C., and a disk having a thickness of 1.2 mm and a diameter of 120 mm was molded and evaluated. The results are shown in Table 1.
実施例４〜６ 実験例（１）で得られた重合体（Ａ）と実験例（４）
で得られたAS樹脂を種々の割合で配合し実施例１と同様
に行なった。結果を第１表に示す。Examples 4 to 6 Polymer (A) obtained in Experimental Example (1) and Experimental Example (4)
The AS resin obtained in 1. was mixed in various proportions, and the same procedure as in Example 1 was carried out. The results are shown in Table 1.
比較例１ 実施例１においてAS樹脂を用いなかった以外は実施例
１と同様に行なった。結果を第１表に示す。Comparative Example 1 Example 1 was repeated except that AS resin was not used. The results are shown in Table 1.
比較例２ イミド化共重合体とAS樹脂に代えポリカーボネート樹
脂（帝人パンライト Ｌ−1225）を用いて実施例１と同
様に行なった。結果を第１表に示す。Comparative Example 2 A polycarbonate resin (Teijin Panlite L-1225) was used instead of the imidized copolymer and the AS resin, and the same procedure as in Example 1 was performed. The results are shown in Table 1.
なお表中に示した物性の測定方法は次の方法によっ
た。 The methods for measuring the physical properties shown in the table were as follows.
（１） VSP:荷重5kg ASTM Ｄ−1525に準拠 （２） 光透過率:JIS K6714に準拠 （３） 光路差：自動偏光解析装置にて測定 （４） アイゾット衝撃強度：ノッチ無し1/4インチAST
M Ｄ−256に準拠 〔発明の効果〕 以上詳記したように、本発明の樹脂組成物は耐熱性及
び透明性に優れかつ成形性が良好であり光学的歪みが小
さい成形性を得ることができる。(1) VSP: Load 5 kg Compliant with ASTM D-1525 (2) Light transmittance: Compliant with JIS K6714 (3) Optical path difference: Measured by an automatic ellipsometer (4) Izod impact strength: 1/4 inch without notch AST
According to MD-256 [Effect of the Invention] As described in detail above, the resin composition of the present invention is excellent in heat resistance and transparency, has good moldability, and has moldability with small optical distortion. it can.
Claims (1)
79重量％、 Ｎ−フェニルマレイミド単量体残基20〜60重量％、 無水マレイン酸単量体残基１〜10重量％およびこれら以
外のビニル単量体残基０〜40重量％からなるイミド化共
重合体10〜90重量部と、 （Ｂ）成分：芳香族ビニル単量体40〜80重量％、 シアン化ビニル単量体０〜40重量％及びこれら以外のビ
ニル単量体残基０〜40重量％からなる共重合体10〜90重
量部 からなることを特徴とする光学ディスク材料。1. Component (A): Aromatic vinyl monomer residue 30 to
Imide composed of 79% by weight, 20 to 60% by weight of N-phenylmaleimide monomer residue, 1 to 10% by weight of maleic anhydride monomer residue, and 0 to 40% by weight of vinyl monomer residue other than these 10 to 90 parts by weight of the copolymer, component (B): 40 to 80% by weight of an aromatic vinyl monomer, 0 to 40% by weight of a vinyl cyanide monomer and a vinyl monomer residue of 0 other than these An optical disc material comprising 10 to 90 parts by weight of a copolymer containing 40 to 40% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164682A JP2501561B2 (en) | 1986-07-15 | 1986-07-15 | Optical disc material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61164682A JP2501561B2 (en) | 1986-07-15 | 1986-07-15 | Optical disc material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321186A JPS6321186A (en) | 1988-01-28 |
| JP2501561B2 true JP2501561B2 (en) | 1996-05-29 |
Family
ID=15797849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61164682A Expired - Lifetime JP2501561B2 (en) | 1986-07-15 | 1986-07-15 | Optical disc material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501561B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008094912A (en) * | 2006-10-10 | 2008-04-24 | Denki Kagaku Kogyo Kk | Resin composition and optical molded article |
| EP2218753A4 (en) | 2007-11-09 | 2012-07-18 | Asahi Kasei Chemicals Corp | Thermoplastic resin composition, and molded body and sheet made of the composition |
| JP2013107933A (en) * | 2011-11-17 | 2013-06-06 | Denki Kagaku Kogyo Kk | Resin composition for optical molded article, method for producing the same and optical molded article |
-
1986
- 1986-07-15 JP JP61164682A patent/JP2501561B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6321186A (en) | 1988-01-28 |
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