Process for producing aromatic primary diamines

    公开(公告)号:US10899726B2

    公开(公告)日:2021-01-26

    申请号:US15324932

    申请日:2015-07-08

    Abstract: A process for the production of aromatic primary amines, by reacting an aromatic dialdehyde with hydrogen and ammonia or an ammonia-liberating compound, in the presence of a hydrogenation catalyst and an amine, wherein the molar ratio of the amine to the aromatic dialdehyde is no less than 1:4 at the start of the reaction.

    Phosphine oxides reduction
    3.
    发明授权

    公开(公告)号:US10815258B2

    公开(公告)日:2020-10-27

    申请号:US15758840

    申请日:2016-09-08

    Abstract: Provided is a process for the conversion of a tertiary phosphine oxide to the corresponding tertiary phosphine, comprising at least reacting said tertiary phosphine oxide with a phosphite compound, in the presence of at least a catalyst. Furthermore, provided is a composition comprising at least a tertiary phosphine oxide and a phosphite compound, and optionally a catalyst.

    Process for producing aromatic primary diamines

    公开(公告)号:US11066377B2

    公开(公告)日:2021-07-20

    申请号:US16781356

    申请日:2020-02-04

    Abstract: The present disclosure relates to a process for the production of aromatic primary amines, by reacting an aromatic dialdehyde with hydrogen and ammonia or an ammonia-liberating compound, in the presence of a hydrogenation catalyst and an amine, wherein the molar ratio of the amine to the aromatic dialdehyde is no less than 1:4 at the start of the reaction.

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