HEAT RESISTANT INSULATING TAPES, ENAMELS FOR WIRES, PROTECTIVE COATING FILMS FOR SEMICONDUCTORS, AND LIQUID CRYSTAL PROTECTIVE FILMS

• Main Authors: KOMATSU SHINICHI, ADACHI TOMOAKI
• Format: Patent
• Language: English; Japanese
• Published: 25.12.2014
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; CONDUCTORS; ELECTRICITY; INSULATORS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide heat resistant insulating tapes made of alicyclic polyimides having high light transmittance and sufficiently high heat resistance.SOLUTION: A heat resistant insulating tape is made of an alicyclic polyimide obtained by combining an aromatic diamine with an alicyclic tetracarboxylic dianhydride produced using a 5-norbornene-2-spiro-α-cycloalkanone-α'-spiro-2''-5''-norbornene represented by the general formula (1) in the figure. [Rto Reach independently represent H, a C1-10 alkyl group, and F; and n represents an integer from 0 to 12]. 【課題】光透過性が高く且つ十分に高度な耐熱性を有する脂環式ポリイミドからなる耐熱絶縁テープを提供する。【解決手段】一般式（１）で表される５−ノルボルネン−２−スピロ−α−シクロアルカノン−α'−スピロ−２''−５''−ノルボルネン類を用いて製造される脂環式テトラカルボン酸二無水物と、芳香族ジアミンとを組み合わせて得られる脂環式ポリイミドからなる耐熱絶縁テープ。［Ｒ１〜Ｒ３は、各々独立にＨ、Ｃ１〜１０のアルキル基及びＦ；ｎは０〜１２の整数］【選択図】なし