DISPLAY COVER, CONSTRUCTION MATERIAL AND COMPONENT, AUTOMOBILE INTERIOR MATERIAL, HOME APPLIANCE COMPONENT, AND OFFICE AUTOMATION EQUIPMENT COMPONENT

• Main Authors: YOKOKI MASASHI, KATSUHARA KAZUNARI, KONO MASAHIKO, KITADE HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 22.06.2017
• Subjects: ADVERTISING; CHEMISTRY; COMPOSITIONS BASED THEREON; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; 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; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; SEALS; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To provide a laminate excellent in surface hardness, impact resistance, punching processability, and yellow discoloration deterioration resistance, and suitable for applications such as display covers or housing materials.SOLUTION: There is provided a laminate in which a polycarbonate resin layer (layer A) composed of a structural unit derived from a dihydroxy compound represented by the following general formula (2) and a structural unit derived from a dihydroxy compound having no aromatic ring, and an aromatic polycarbonate resin layer (layer B) are laminated, wherein the content ratio of the structural unit derived from the dihydroxy compound represented by the general formula (2) in the polycarbonate resin used in the layer A is 35 mol% or more and 90 mol% or less, and the resin used in the layer B is composed only of an aromatic polycarbonate resin.SELECTED DRAWING: None 【課題】表面硬度、耐衝撃性、打ち抜き加工性および耐黄変劣化性に優れ、ディスプレイカバーや建材などの用途に適した積層体の提供。【解決手段】 下記一般式（２）で表されるジヒドロキシ化合物に由来する構造単位と芳香族環を有さないジヒドロキシ化合物に由来する構造単位とからなるポリカーボネート樹脂層（Ａ層）と、芳香族ポリカーボネート樹脂層（Ｂ層）とを積層し、前記Ａ層に用いるポリカーボネート樹脂中の一般式（２）で表されるジヒドロキシ化合物に由来する構造単位の含有割合が３５モル％以上９０モル％以下であり、前記Ｂ層に用いる樹脂が芳香族ポリカーボネート樹脂のみからなることを特徴とする積層体。【化１】【選択図】なし