Transparent laminates
    23.
    发明授权
    Transparent laminates 失效
    透明层压板

    公开(公告)号:US5047272A

    公开(公告)日:1991-09-10

    申请号:US446941

    申请日:1989-12-06

    摘要: Novel laminates comprise transparent polymers with a high content of hydroxyl groups as core layer and adhesive layers applied to one or both sides which are tack-free under normal conditions and which can accept an outer layer, thermoplastic polyurethane-polyureas having a substantially linear molecular structure with exclusively aliphatically or cycloaliphatically bonded urethane segments and urea segments and a content of urea groups --NH--CO--NH-- of 1 to 20% by weight and a content of carboxyl groups --COOH bonded directly to the main chain of the molecule in lateral positions, of 0.001 to 10% by weight, being used as adhesive layers.

    摘要翻译: 新颖的层压体包括具有高含量羟基作为核心层的透明聚合物,并且在正常条件下施加到一侧或两侧上的粘合剂层是无粘性的并且可以接受外层,具有基本上线性分子结构的热塑性聚氨酯 - 聚脲 具有脂肪或脂环结合的氨基甲酸酯链段和尿素链段,脲基团-NH-CO-NH-的含量为1〜20重量%,羧基-COOH的含量直接键合到分子的主链侧面 位置为0.001〜10重量%,用作粘合剂层。