知搜-全球专利检索

  1. 登录
  2. 注册

搜索结果

38 条记录 (耗时 0.016 秒)

    Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil
    1.
    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
    5.
    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
    6.
    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
    7.
    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。

    Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof
    8.
    发明授权
    Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof 失效
    通过臭氧降低纤维素醚的粘度及其应用的方法

    公开(公告)号：US4316982A

    公开(公告)日：1982-02-23

    申请号：US142883

    申请日：1980-04-23

    申请人： Arno Holst ,  Eberhard Perplies

    发明人： Arno Holst ,  Eberhard Perplies

    IPC分类号： C08B11/02 ,  C08B11/20

    CPC分类号： C08B11/20

    摘要： This invention relates to a process for reducing the viscosity of cellulose ethers by reacting a water-soluble cellulose ether with ozone in the presence of water, wherein said cellulose ether which is moist with water and has a dry content of from 20 to 95% by weight is reacted with an ozone/oxygen mixture or with an ozone/air mixture at a temperature of about 0.degree. to 60.degree. C.

    摘要翻译： 本发明涉及通过在水存在下使水溶性纤维素醚与臭氧反应来降低纤维素醚的粘度的方法，其中所述纤维素醚与水一起湿润并且干燥含量为20-95％ 重量与臭氧/氧气混合物或臭氧/空气混合物在约0℃至60℃的温度下反应。

    Process and equipment for preparing swellable cross-linked carboxyalkylcelluloses from natural cellulose or cellulose hydrate and use thereof
    9.
    发明授权
    Process and equipment for preparing swellable cross-linked carboxyalkylcelluloses from natural cellulose or cellulose hydrate and use thereof 失效
    用于从天然纤维素或纤维素水合物制备可溶胀的交联羧基烷基纤维素的方法和设备及其用途

    公开(公告)号：US4250306A

    公开(公告)日：1981-02-10

    申请号：US43172

    申请日：1979-05-29

    申请人： Helmut Lask ,  Arno Holst ,  Ehrenfried Nischwitz ,  Hans Sommer

    发明人： Helmut Lask ,  Arno Holst ,  Ehrenfried Nischwitz ,  Hans Sommer

    IPC分类号： A61L15/28 ,  C08B11/12 ,  C08B15/00 ,  C08B17/06 ,  C08B15/10 ,  D04H1/42

    CPC分类号： C08B17/06 ,  A61L15/28 ,  C08B11/12 ,  C08B15/005 ,  Y10S68/903

    摘要： This invention relates to a process for preparing swellable cross-linked carboxyalkylcelluloses by reacting cellulose, a carboxyalkylating etherifying agent, and a cross-linking agent in an aqueous alkaline medium, comprising effecting alkalizing, etherifying, and cross-linking simultaneously in one reaction step using fibers, textile sheet materials containing these fibers, or sheet materials of other kinds, having a base of cellulose hydrate or of natural cellulose, by contacting said fibers or sheet materials with an ample quantity of an aqueous alkaline reaction mixture, removing part of the reaction mixture from the fibers or sheet materials contacted therewith, so that at least the quantity required for reaction is still present, and treating the fibers or sheet materials containing the remainder of the aqueous alkaline reaction mixture with heat energy. The invention also relates to equipment for performing the process.

    摘要翻译： 本发明涉及一种通过使纤维素，羧基烷基化醚化剂和交联剂在碱性水溶液中反应制备可溶胀的交联羧基烷基纤维素的方法，包括在一个反应​​步骤中同时进行碱化，醚化和交联， 纤维，包含这些纤维的纺织片材或其他类型的片材，具有纤维素水合物或天然纤维素的基底，通过使所述纤维或片材与大量的碱性水溶液混合物接触，除去部分反应 从与其接触的纤维或片材的混合物中，至少反应所需的量仍然存在，并且用热能处理含有剩余的碱性水溶液混合物的纤维或片材。 本发明还涉及用于执行该过程的设备。