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65 条记录 (耗时 0.014 秒)

    METHOD FOR PRODUCING ORGANICALLY MODIFIED AEROGELS
    4.
    发明申请
    METHOD FOR PRODUCING ORGANICALLY MODIFIED AEROGELS 审中-公开

    公开(公告)号：US20180044188A1

    公开(公告)日：2018-02-15

    申请号：US15552443

    申请日：2016-04-21

    申请人： Wacker Chemie AG

    发明人： Konrad HINDELANG ,  Dominik JANTKE ,  Richard WEIDNER

    IPC分类号： C01B33/158 ,  C01B33/155 ,  C01B33/152

    CPC分类号： C01B33/1585 ,  C01B33/152 ,  C01B33/155

    摘要： The invention relates to a method for producing organically modified aerogels. The problem addressed by the invention is that of providing an economical method for producing hydrophobic aerogels which can be implemented cost-effectively, simply, and safely, and which operates to save on resources. This problem is solved by the provision of a method for producing organically modified aerogels, wherein a sol containing [SiO4,2] units is produced, and the sol obtained is dispersed in a continuous phase. The sol forms a separate phase and the continuous phase contains at least 20 wt % organosiloxane, a gel is formed from the sol in the continuous phase, and the gel obtained is surface-modified in the presence of a phase mediator in the continuous phase, wherein acids or chlorosilanes or mixtures thereof are added as initiator and the gels obtained are dried. The aerogels provided can be used as insulating materials, in particular in thermal insulation.

    Preparation of dispersions and ceramics from hydrated metal oxides
    5.
    发明授权
    Preparation of dispersions and ceramics from hydrated metal oxides 失效
    从水合金属氧化物制备分散体和陶瓷

    公开(公告)号：US4576921A

    公开(公告)日：1986-03-18

    申请号：US522695

    申请日：1983-08-12

    申请人： Edward S. Lane

    发明人： Edward S. Lane

    IPC分类号： B01F17/18 ,  B01J13/00 ,  C01B33/152 ,  C01G19/02 ,  C03C1/00 ,  C03C3/00 ,  C01B13/14 ,  C03C3/04

    CPC分类号： C01G19/02 ,  B01J13/0034 ,  B01J13/0047 ,  C01B33/152 ,  C03C1/008

    摘要： The present invention relates to the preparation of materials and finds application in the preparation of dispersions and gels.The invention provides, in one aspect, a process for the preparation of a dispersion which comprises treating a chemical compound with a quaternary ammonium hydroxide so as to peptize the chemical compound to form a dispersion.The dispersion may be, for example, a suspension or a sol (i.e. a colloidal solution). The chemical compound may be, for example, a hydrous metal oxide (e.g. hydrous stannic oxide).Mixed dispersions may be formed in accordance with the present invention.

    摘要翻译： 本发明涉及材料的制备和应用于分散体和凝胶的制备。 本发明一方面提供一种制备分散体的方法，该方法包括用氢氧化季铵处理化合物，以使该化合物胶溶以形成分散体。 分散体可以是例如悬浮液或溶胶（即胶体溶液）。 化合物可以是例如含水金属氧化物（例如，含水锡氧化物）。 可以根据本发明形成混合分散体。

    Production of silica having high specific surface area
    10.
    发明授权
    Production of silica having high specific surface area 失效
    生产具有高比表面积的二氧化硅

    公开(公告)号：US5158758A

    公开(公告)日：1992-10-27

    申请号：US342547

    申请日：1989-04-24

    申请人： Paul C. Chieng ,  Deborah J. Brame ,  Alexander H. T. Chu

    发明人： Paul C. Chieng ,  Deborah J. Brame ,  Alexander H. T. Chu

    IPC分类号： B01J20/10 ,  B01J20/283 ,  B01J20/287 ,  C01B33/152

    CPC分类号： B01J20/287 ,  B01J20/103 ,  B01J20/283 ,  C01B33/152

    摘要： A method for production of high specific surface area silica gel by hydrolysis of silicon tetrahalide, wherein a solution of silicon tetrahalide in a non-reactive solvent such as alcohol is mixed with water to produce silica gel having a high surface area and narrow pore diameter distribution especially suited for use as normal phase packing material in high performance chromatography columns. The water contains fluoride ions if the halide is chloride. Reverse phase packing material can be prepared by reacting the normal phase silica gel with organochlorosilanes to prepare bonded reverse phase material for use in high performance liquid chromotagraphy systems.

    摘要翻译： 一种通过水解四卤化硅生产高比表面积硅胶的方法，其中将四卤化硅在无反应性溶剂如醇中的溶液与水混合，生产具有高表面积和窄孔径分布的硅胶 特别适用于高性能色谱柱中的正相填充材料。 如果卤化物是氯化物，水就含有氟离子。 反相包装材料可以通过正相硅胶与有机氯硅烷反应制备用于高性能液体色谱系统的粘结反相材料。