CATALYSTS FOR BENZOXAZINE
    2.
    发明公开

    公开(公告)号:US20240025867A1

    公开(公告)日:2024-01-25

    申请号:US18256804

    申请日:2021-12-09

    IPC分类号: C07D265/16 C08G73/02

    CPC分类号: C07D265/16 C08G73/0233

    摘要: A process for producing a benzoxazine containing free aliphatic hydroxyl groups and monoester comprising the steps of: a) a reaction of a phenolic acid derivative with a monofunctional oligomer or molecule at a temperature of from 80° C. to 200° C., during 12 h-48 h, in a presence of a Bronsted type acid catalyst, resulting in a monophenol terminated oligomer or molecule and b) reaction of the monophenol terminated oligomer or molecule of step a) with a mixture of an amino-alcohol, a primary amine derivative and paraformaldehyde at a temperature range of from 80° C. to 100° C., from 1 h to 48 h, under stirring.