METHOD OF PRODUCING RECYCLED REINFORCING FIBERS

    公开(公告)号:US20240042651A1

    公开(公告)日:2024-02-08

    申请号:US18267460

    申请日:2021-12-22

    申请人: Miraikasei Inc.

    发明人: Haruna MARUKO

    摘要: Provided is a method of producing recycled reinforcing fibers capable of efficiently recovering reinforcing fibers, even with a solvent method, from a fiber-reinforced resin material comprising a resin component having a chemical structure with basic properties.
    A method of producing recycled reinforcing fibers, the method including: a step of treating a fiber-reinforced resin material comprising a resin and reinforcing fibers with an acidic solution comprising an acid; and a step of treating the fiber-reinforced resin material with a treatment solution comprising an oxidizing agent to dissolve at least part of the resin of the fiber-reinforced resin material in the treatment solution, wherein the resin comprises a resin component having a chemical structure with basic properties.

    Method for accelerating lactonization
    9.
    发明授权
    Method for accelerating lactonization 失效
    加速内酯化的方法

    公开(公告)号:US3878177A

    公开(公告)日:1975-04-15

    申请号:US20839871

    申请日:1971-12-15

    摘要: The present invention is directed to a method for lactonizing a vinyl copolymer containing a vinyl monomer having nitrile groups and a monomer having hydroxyl groups and/or a monomer capable of forming hydroxyl groups or an article shaped from said copolymer by treating the same in an acid medium so that lactone rings are formed in said copolymer or shaped article, characterized by adding a transition metal ion such as zinc or copper to said acid medium. By the addition of the transition metal in the acid medium, the lactonizing reaction is greatly accelerated.

    摘要翻译: 本发明涉及含有具有腈基的乙烯基单体和具有羟基的单体和/或能够形成羟基的单体的乙烯基共聚物的内酯化方法或由所述共聚物成型的制品在酸中处理 在所述共聚物或成型制品中形成内酯环,其特征在于向所述酸性介质中加入过渡金属离子如锌或铜。 通过在酸性介质中加入过渡金属,可大大加速内酯化反应。