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38 条记录 (耗时 0.02 秒)

    Cellulose ether-based gel-forming composition and methods of use and preparation thereof
    8.
    发明授权
    Cellulose ether-based gel-forming composition and methods of use and preparation thereof 失效
    基于纤维素醚的凝胶形成组合物及其使用和制备方法

    公开(公告)号：US4396433A

    公开(公告)日：1983-08-02

    申请号：US363042

    申请日：1982-03-29

    申请人： Lothar Brandt ,  Arno Holst

    发明人： Lothar Brandt ,  Arno Holst

    IPC分类号： C08K3/00 ,  C08L1/08

    CPC分类号： C08K3/0075

    摘要： The application discloses a gel-forming composition based on (a) water, (b) a water-soluble cellulose mixed ether having at least one nonionic substituent from the group comprising hydroxyalkyl and alkyl and at least one anionic phosphorus-containing substituent, and (c) a salt containing a cation which is at least divalent. The phosphorus-containing substituent is a phosphonoalkyl group or a p-alkylphosphinoalkyl group. The application also relates to a process for the preparation of a gel from this composition, to the reversible reversing of the gel by the addition of an agent which complexes the cation, e.g. in the case of Al.sup.3+ ions, Fe.sup.3+ ions, Zr.sup.4+ ions or ZrO.sup.2+ ions, by means of an amount of fluoride ions, and to the use of this gel-forming compostion in the secondary production of petroleum.

    摘要翻译： 本申请公开了一种基于（a）水的凝胶形成组合物，（b）具有至少一个非离子取代基的水溶性纤维素混合醚，所述非离子取代基包括羟烷基和烷基以及至少一个阴离子含磷取代基，和 c）含有至少二价的阳离子的盐。 含磷取代基是膦酰基烷基或对烷基膦基烷基。 本申请还涉及从该组合物制备凝胶的方法，通过加入与阳离子复合的试剂，例如将其与络合物的可逆反转相结合。 在Al3 +离子，Fe3 +离子，Zr4 +离子或ZrO2 +离子的情况下，通过一定量的氟离子，以及在二次生产石油中使用该凝胶形成组合物。

    Process for the manufacture of water-absorbing cellulose ethers
    9.
    发明授权
    Process for the manufacture of water-absorbing cellulose ethers 失效
    制造吸水纤维素醚的方法

    公开(公告)号：US4068068A

    公开(公告)日：1978-01-10

    申请号：US682326

    申请日：1976-05-03

    申请人： Arno Holst ,  Helmut Lask ,  Michael Kostrzewa

    发明人： Arno Holst ,  Helmut Lask ,  Michael Kostrzewa

    IPC分类号： A61F13/472 ,  A61F13/15 ,  A61F13/53 ,  A61L15/28 ,  A61L15/60 ,  C08B11/08 ,  C08B11/187 ,  C08B15/00 ,  C08B15/10 ,  C08B11/00 ,  C08B11/20

    CPC分类号： C08B15/10 ,  A61L15/28 ,  C08B15/005

    摘要： This invention relates to an improvement in the process for the manufacture of water-adsorbing but at least partially water-insoluble cellulose ethers in which cellulose is alkalized in a liquid reaction medium and reacted with an etherification agent in a manner such that an at least preponderantly water-soluble cellulose ether would be obtained in the case of a mere etherification process and in which, prior to, simultaneously with, or after the etherification process, a reaction is effected with a crosslinking agent which is polyfunctional towards cellulose in an alkaline reaction medium,The improvement comprising employing bis(acrylamido)-acetic acid as the crosslinking agent.

    摘要翻译： 本发明涉及制造水吸附但至少部分不溶于水的纤维素醚的方法的改进，其中纤维素在液体反应介质中碱化并与醚化剂反应，使得至少主要地 在纯化过程的情况下，将获得水溶性纤维素醚，并且在醚化过程之前，同时或之后，用碱性反应介质中的纤维素多官能交联剂进行反应 作为交联剂的包含使用双（ACRYLAMIDO） - 酸的改进。

    Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil
    10.
    发明授权
    Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil 失效
    水性表面活性剂混合物及其在回收原油中的用途

    公开(公告)号：US4970007A

    公开(公告)日：1990-11-13

    申请号：US320776

    申请日：1989-03-08

    申请人： Dennis Miller ,  Manfred Schmidt ,  Arno Holst ,  Sigmar-Peter von Halasz

    发明人： Dennis Miller ,  Manfred Schmidt ,  Arno Holst ,  Sigmar-Peter von Halasz

    IPC分类号： B01F17/02 ,  B01F17/42 ,  C09K8/584

    CPC分类号： C09K8/584 ,  Y10S507/938

    摘要： Surfactant mixtures made from 5 to 80% by weight of an ether sulfonate, 5 to 80% by weight of an alkyl or alkylphenol polyglycol ether and 10 to 80% by weight of an alkanesulfonate, petroleumsulfonate or alkylbenzenesulfonate. This combination of surfactants produces stable, aqueous solutions or dispersions which are highly suitable for surfactant flooding in tertiary oil recovery since these aqueous surfactant solutions or dispersions form microemulsions with the oil even at high salinities.

    摘要翻译： 由5至80重量％的醚磺酸盐，5至80重量％的烷基或烷基酚聚乙二醇醚和10至80重量％的链烷磺酸盐，石油磺酸盐或烷基苯磺酸盐制成的表面活性剂混合物。 表面活性剂的这种组合产生稳定的水溶液或分散体，其高度适用于三次油回收中的表面活性剂驱油，因为这些表面活性剂水溶液或分散体甚至在高盐度下与油形成微乳。