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38 条记录 (耗时 0.022 秒)

    Cellulose ether-based gel-forming composition and methods of use and preparation thereof
    2.
    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
    3.
    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
    4.
    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。

    Cigarette filter
    8.
    发明授权
    Cigarette filter 失效
    香烟过滤器

    公开(公告)号：US4171705A

    公开(公告)日：1979-10-23

    申请号：US751629

    申请日：1976-12-17

    申请人： Arno Holst ,  Michael Kostrzewa ,  Helmut Lask

    发明人： Arno Holst ,  Michael Kostrzewa ,  Helmut Lask

    IPC分类号： A24D3/10 ,  A24B15/02

    CPC分类号： A24D3/10

    摘要： This invention relates to a cigarette filter of cellulosic material composed at least partially of modified cellulose modified with at least one fatty acid group containing at least 14 carbon atoms in the molecule selected from the group consisting of a complex compound of a fatty acid containing basic chromium chloride and a melamine resin precondensate containing a fatty acid group.

    摘要翻译： 本发明涉及至少部分由至少一种在分子中含有至少14个碳原子的脂肪酸基团改性的改性纤维素组成的香烟过滤嘴，所述脂肪酸基团选自含有碱性铬的脂肪酸的络合物 氯化物和含有脂肪酸基团的三聚氰胺树脂预缩合物。

    Hydroxyalkyl cellulose ethers
    9.
    发明授权
    Hydroxyalkyl cellulose ethers 失效
    羟烷基纤维素醚

    公开(公告)号：US4097667A

    公开(公告)日：1978-06-27

    申请号：US751457

    申请日：1976-12-16

    申请人： Arno Holst ,  Michael Kostrzewa

    发明人： Arno Holst ,  Michael Kostrzewa

    IPC分类号： C08B11/08 ,  C08B15/00 ,  C08B11/20

    CPC分类号： C08B15/005

    摘要： Disclosed is a process for the chemical modification of a water-soluble cellulose ether, which comprises reacting the ether with a chloroformic acid ester in an aqueous organic medium containing alkali hydroxide, whereby the cellulose ether is rendered at least partially insoluble in water. The modified cellulose ether may be easily dispersed in water and redissolved to form a smooth solution of the original water-soluble ether by adding sufficient alkali to the dispersion to reuse its pH to at least about 11, preferably to about 12.

    摘要翻译： 本发明涉及一种水溶性纤维素醚的化学改性方法，该方法包括使醚与氯甲酸酯在含有碱金属氢氧化物的含水有机介质中反应，由此纤维素醚至少部分不溶于水。 改性纤维素醚可以容易地分散在水中并再溶解以通过向分散体中加入足够的碱使其pH至少约11，优选至约12，以形成原始水溶性醚的光滑溶液。

    Process for the production of water-adsorbing but water-insoluble cellulose ethers
    10.
    发明授权
    Process for the production of water-adsorbing but water-insoluble cellulose ethers 失效
    用于生产水吸附但水不溶性纤维素醚的方法

    公开(公告)号：US3965091A

    公开(公告)日：1976-06-22

    申请号：US524822

    申请日：1974-11-18

    申请人： Arno Holst ,  Helmut Lask

    发明人： Arno Holst ,  Helmut Lask

    IPC分类号： C08B11/187 ,  A61L15/28 ,  C08B11/14 ,  C08B11/193 ,  C08B15/10 ,  C08B11/00 ,  C08B11/20

    CPC分类号： C08B15/10 ,  A61L15/28 ,  C08B11/14 ,  C08B11/193

    摘要： This invention relates to an improvement in the process for the production of water-adsorbing, but largely water-insoluble, cellulose ethers, in which cellulose is alkalized in the presence of alkali and isopropanol as a reaction medium and is so reacted with an etherification agent that by etherification only a water-soluble cellulose ether is produced, and in which process a modification agent which is able to react with the still free hydroxyl groups of the cellulose anhydro glucose groups in an alkaline reaction medium is reacted before, during, or after the etherification, the improvement comprising effecting the etherification of cellulose to carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, or methylhydroxyethyl cellulose, reacting with the modification agent in the presence of 0.8 to 7.5 parts by weight of isopropanol, based upon the cellulose weight, and employing a modification agent being one of the formulae ##EQU1## R.sub.1 in formula I being hydroxyl, or an acylamino or etherified carbamino group, and R.sub.2 in formula I being hydrogen or a carboxyl group.

    摘要翻译： 本发明涉及在碱和异丙醇作为反应介质存在下使纤维素碱化的水吸附，但主要是水不溶性纤维素醚的方法的改进，并且与醚化剂 通过醚化仅产生水溶性纤维素醚，并且在该方法中，能够在碱性反应介质中与纤维素脱氢葡萄糖基团的游离羟基反应的改性剂在之前，之中或之后反应 醚化，改进包括将纤维素醚化为羧甲基纤维素，羧甲基羟乙基纤维素，羟乙基纤维素或甲基羟乙基纤维素，在0.8至7.5重量份异丙醇存在下，基于纤维素重量与改性剂反应， 并且使用改性剂为下式之一：HOHH H | PARALLEL || |（I） H 2 C = C-C-N-C-R 1和（II）H 2 C = C-SO 2 -NH 2，式I中的R 2 R为羟基，或酰基氨基或醚化的氨基氨基，式I中的R 2为氢或羧基。