To provide a methacrylic resin laminate which has scattering prevention properties in a wide temperature region including a low temperature region while having transparency and rigidity inherent to the methacrylic resin.SOLUTION: A methacrylic resin laminate (10) has a laminate structure in which first resin layers (11) containing a methacrylic resin (A) are laminated on both surfaces of a second resin layer (12) containing a thermoplastic elastomer (B) that is a block copolymer including a polymer block (b-1) containing an aromatic vinyl monomer unit and a polymer block (b-2) including a conjugated diene monomer unit or its hydrogenated product. When dynamic viscoelasticity measurement is performed according to JIS-K-7244-4 on the condition of a frequency of 1.0 Hz and data of a change of a loss tangent (tanδ) to the temperature is acquired, the thermoplastic elastomer (B) has at least one loss tangent (tanδ) peak in a temperature range of -60 to -30°C.SELECTED DRAWING: Figure 1

    【課題】メタクリル系樹脂が本来有する透明性及び剛性をそのまま有しつつ、低温領域を含む広い温度領域で飛散防止性を有するメタクリル系樹脂積層体を提供する。【解決手段】本発明のメタクリル系樹脂積層体(10)は、メタクリル系樹脂(A)を含む第1の樹脂層(11)が、芳香族ビニル単量体単位を含む重合体ブロック(b−1)と共役ジエン単量体単位を含む重合体ブロック(b−2)とを含むブロック共重合体又はその水素添加物である熱可塑性エラストマー(B)を含む第2の樹脂層(12)の両面に積層された積層構造を有する。熱可塑性エラストマー(B)は、JIS−K7244−4に準拠して、周波数1.0Hzの条件で動的粘弾性測定を実施し、温度に対する損失正接(tanδ)の変化のデータを取得したとき、−60〜−30℃の温度範囲内に少なくとも1つの損失正接(tanδ)のピークがある。【選択図】図1


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    Title :

    METHACRYLIC RESIN LAMINATE AND APPLICATION THEREOF


    Additional title:

    メタクリル系樹脂積層体及びその用途


    Contributors:

    Publication date :

    2021-03-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind



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