LAMINATE, SURFACE MATERIAL FOR DISPLAY, TOUCH PANEL MEMBER, LIQUID CRYSTAL DISPLAY DEVICE, AND ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE

To provide a laminate having a good balance in flexure resistance and an elastic modulus and having durability.SOLUTION: The laminate has a polyimide film and a hard coat layer containing a UV absorbent. The polyimide film comprises a polyimide containing a specific amount of a structural unit repre...

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Hauptverfasser:	NANAMI MAKOTO, SAKAYORI KATSUYA, KOBAYASHI ATSUHIRO, YABUMOTO KAZUKI, AMIE TAKASHI, FUKUDA TAKAYUKI, KANAZAWA NAHOMI, WADA YOSUKE, KOBAYASHI YOSHIHIRO, WAKITA KEISUKE, OKADA KODAI, MAEDA TAKANORI, HOTTA HIKARI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	To provide a laminate having a good balance in flexure resistance and an elastic modulus and having durability.SOLUTION: The laminate has a polyimide film and a hard coat layer containing a UV absorbent. The polyimide film comprises a polyimide containing a specific amount of a structural unit represented by general formula (1) below and having a weight average molecular weight of 100,000 or more. Values obtained by respectively dividing a yellowness degree (YI), a yellowness degree change ΔYI and a color change ΔE of the laminate through a specific weathering test by the total film thickness of the polyimide film and the hard coat layer are less than specific values. In formula (1), symbols are as described in the specifications of the present invention.SELECTED DRAWING: None 【課題】本発明は、屈曲耐性と弾性率のバランスが良好で、且つ耐久性を有する積層体を提供することを主目的とする。【解決手段】ポリイミドフィルムと、紫外線吸収剤を含有するハードコート層とを有する積層体であり、前記ポリイミドフィルムは、下記一般式（１）で表される構成単位を特定量含み、重量平均分子量が１００，０００以上であるポリイミドを含有し、積層体の黄色度（ＹＩ）、特定の耐候性試験前後の黄色度変化ΔＹＩ及び色変化ΔＥを各々前記ポリイミドフィルムと前記ハードコート層との合計膜厚で除した値が特定値未満である積層体。【化１】（各符号は、明細書に記載の通りである。）【選択図】なし