Super high selectivity aromatic block copolyimide membranes for separations
    45.
    发明授权
    Super high selectivity aromatic block copolyimide membranes for separations 有权
    用于分离的超高选择性芳族嵌段共聚酰亚胺膜

    公开(公告)号:US09567436B2

    公开(公告)日:2017-02-14

    申请号:US14574319

    申请日:2014-12-17

    Applicant: UOP LLC

    Inventor: Chunqing Liu

    Abstract: This invention relates to aromatic block copolyimide polymers comprising both hydroxyl functional groups and carboxylic acid functional groups, their membranes and methods for making and using these polymers and membranes. The aromatic block copolyimide polymer described in the present invention comprises both hydroxyl functional groups and carboxylic acid functional groups. The gas transport properties particularly the selectivities of the aromatic block copolyimide comprising both hydroxyl functional groups and carboxylic acid functional groups were significantly improved compared to those of the aromatic random copolyimide comprising both hydroxyl functional groups and carboxylic acid functional groups.

    Abstract translation: 本发明涉及包含羟基官能团和羧酸官能团的芳族嵌段共聚酰亚胺聚合物,它们的膜以及制备和使用这些聚合物和膜的方法。 本发明中描述的芳族嵌段共聚酰亚胺聚合物包括羟基官能团和羧酸官能团。 与包含羟基官能团和羧酸官能团的芳族无规共聚酰亚胺相比,特别是包含羟基官能团和羧酸官能团的芳族嵌段共聚酰亚胺的选择性显着提高。

    SUPER HIGH SELECTIVITY AROMATIC BLOCK COPOLYIMIDE MEMBRANES FOR SEPARATIONS
    46.
    发明申请
    SUPER HIGH SELECTIVITY AROMATIC BLOCK COPOLYIMIDE MEMBRANES FOR SEPARATIONS 有权
    超高选择性芳香族嵌段共聚物膜分离

    公开(公告)号:US20160177035A1

    公开(公告)日:2016-06-23

    申请号:US14574319

    申请日:2014-12-17

    Applicant: UOP LLC

    Inventor: Chunqing Liu

    Abstract: This invention relates to aromatic block copolyimide polymers comprising both hydroxyl functional groups and carboxylic acid functional groups, their membranes and methods for making and using these polymers and membranes. The aromatic block copolyimide polymer described in the present invention comprises both hydroxyl functional groups and carboxylic acid functional groups. The gas transport properties particularly the selectivities of the aromatic block copolyimide comprising both hydroxyl functional groups and carboxylic acid functional groups were significantly improved compared to those of the aromatic random copolyimide comprising both hydroxyl functional groups and carboxylic acid functional groups.

    Abstract translation: 本发明涉及包含羟基官能团和羧酸官能团的芳族嵌段共聚酰亚胺聚合物,它们的膜以及制备和使用这些聚合物和膜的方法。 本发明中描述的芳族嵌段共聚酰亚胺聚合物包括羟基官能团和羧酸官能团。 与包含羟基官能团和羧酸官能团的芳族无规共聚酰亚胺相比,特别是包含羟基官能团和羧酸官能团的芳族嵌段共聚酰亚胺的选择性显着提高。

    POLYIMIDE BLEND MEMBRANES FOR GAS SEPARATIONS
    47.
    发明申请
    POLYIMIDE BLEND MEMBRANES FOR GAS SEPARATIONS 有权
    用于气体分离的聚酰亚胺混合膜

    公开(公告)号:US20160089627A1

    公开(公告)日:2016-03-31

    申请号:US14496754

    申请日:2014-09-25

    Applicant: UOP LLC

    Abstract: The polyimide blend membrane in the present invention was prepared by blending a first aromatic polyimide with high permeability and a second aromatic polyimide with high selectivity for gas separation. The polyimide blend membrane in the present invention showed improved permeability compared to membranes made from the second aromatic polyimide and improved selectivity compared to membranes made from the first aromatic polyimide.

    Abstract translation: 本发明中的聚酰亚胺共混膜是通过高选择性地混合具有高磁导率的第一芳族聚酰亚胺和第二芳族聚酰亚胺来制备的。 与由第一芳族聚酰亚胺制成的膜相比,本发明的聚酰亚胺共混膜显示出比由第二芳族聚酰亚胺制成的膜提高的渗透性,并提高了选择性。

    Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes
    49.
    发明授权
    Polybenzoxazole membranes from self-cross-linkable aromatic polyimide membranes 有权
    来自自交联芳香聚酰亚胺膜的聚苯并恶唑膜

    公开(公告)号:US09211508B2

    公开(公告)日:2015-12-15

    申请号:US14039570

    申请日:2013-09-27

    Applicant: UOP LLC

    Abstract: A method of making a polybenzoxazole (PBO) membrane from a self-cross-linked aromatic polyimide polymer membrane is provided. These membranes are useful in the separation of gas mixtures and liquid mixtures. The PBO membrane is made by fabricating a self-cross-linkable aromatic polyimide polymer membrane comprising both hydroxyl functional groups and carboxylic acid functional groups; cross-linking the polymer to form a self-cross-linked aromatic polyimide polymer membrane by heating the membrane at 250° to 300° C. under an inert atmosphere; and thermal heating the self-cross-linked aromatic polyimide polymer membrane at a temperature from about 350° to 500° C. under an inert atmosphere to convert the self-cross-linked aromatic polyimide polymer membrane into a PBO membrane. A membrane coating step may be added by coating the selective layer surface of the PBO membrane with a thin layer of high permeability material.

    Abstract translation: 提供了一种从自交联的芳族聚酰亚胺聚合物膜制备聚苯并恶唑(PBO)膜的方法。 这些膜可用于气体混合物和液体混合物的分离。 PBO膜通过制造包含羟基官能团和羧酸官能团的自交联芳族聚酰亚胺聚合物膜制成; 交联聚合物以通过在惰性气氛下在250℃至300℃下加热该膜而形成自交联的芳族聚酰亚胺聚合物膜; 并在惰性气氛下,在约350-500℃的温度下自热交联芳族聚酰亚胺聚合物膜,将自交联的芳族聚酰亚胺聚合物膜转化成PBO膜。 可以通过用高渗透性材料的薄层涂布PBO膜的选择性层表面来添加膜涂覆步骤。

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