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    Process for the manufacture of water-absorbing cellulose ethers
    1.
    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。

    Process for the production of water adsorbing but water-insoluble cellulose ethers
    3.
    发明授权
    Process for the production of water adsorbing but water-insoluble cellulose ethers 失效
    生产吸水但水不溶性纤维素醚的方法

    公开(公告)号：US3936441A

    公开(公告)日：1976-02-03

    申请号：US522741

    申请日：1974-11-11

    申请人： Arno Holst ,  Michael Kostrzewa ,  Helmut Lask

    发明人： Arno Holst ,  Michael Kostrzewa ,  Helmut Lask

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

    CPC分类号： C08B15/10 ,  A61L15/28 ,  C08B11/00

    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 hydroxide 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 the cellulose is reacted with a cross-linking agent which is polyfunctional towards cellulose in an alkaline reaction medium before, during, or after the etherification of the cellulose, the improvement comprising effecting the etherification of cellulose to carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose, or methylhydroxyethyl cellulose, reacting the cellulose with the polyfunctional cross-linking agent in the presence of 0.8 to 7.5 parts by weight of isopropanol, based upon the cellulose weight, and employing as the cross-linking agent acrylamido methylene chloroacetamide, dichloroacetic acid or phosphorus oxychloride or a compound in which at least two groups functional towards cellulose areThe acrylic amino group ##EQU1## the chlorine azomethine group ##EQU2## OR THE ALLYLOXY AZOMETHINE GROUP ##EQU3##

    摘要翻译： 本发明涉及在碱性氢氧化物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，并且与醚化反应 通过醚化仅产生水溶性纤维素醚，并且在该方法中，纤维素与在纤维素醚化之前，期间或之后在碱性反应介质中对纤维素多官能的交联剂反应， 该改进包括将纤维素醚化成羧甲基纤维素，羧甲基羟乙基纤维素，羟乙基纤维素或甲基羟乙基纤维素，使纤维素与多官能交联剂在0.8至7.5重量份异丙醇存在下，基于纤维素 重量，并用作交联剂丙烯酰胺亚甲基氯代 酰胺，二氯乙酸或三氯氧磷或其中至少两个对纤维素起作用的基团是丙烯酰胺基团CH 2 = CH-CN-平行| O氯偶氮甲碱基-N = C- | Cl或全氟代氨基甲酰基 - N = CO-CH 2 -CH = CH 2。 |

    Cigarette filter
    4.
    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。

    Process for the production of water-adsorbing cellulose ethers
    7.
    发明授权
    Process for the production of water-adsorbing cellulose ethers 失效
    生产吸水纤维素醚的方法

    公开(公告)号：US4066828A

    公开(公告)日：1978-01-03

    申请号：US683967

    申请日：1976-05-06

    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 ,  C08B11/187 ,  C08B15/00 ,  C08B15/10 ,  C08B11/00 ,  C08B11/193 ,  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 production of water-adsorbing, but at least partially water-insoluble, cellulose ethers in which cellulose is alkalized in a liquid reaction medium and etherified in a manner such that by etherification only an at least largely water-soluble carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose or methyl hydroxyethyl cellulose is produced, and in which the cellulose is reacted in an alkaline reaction medium before, during, or after the etherification with a cross-linking agent which is polyfunctional towards cellulose and selected from the group consisting of acrylamido methylene chloroacetamide, dichloroacetic acid, phosphorous oxychloride, or a compound in which at least two groups functional towards cellulose are ##STR1## the improvement comprising effecting alkalization, etherification, and cross-linking in a liquid reaction medium other than isopropyl alcohol.

    摘要翻译： 本发明涉及生产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被碱化并且以如下方式醚化，使得仅通过醚化至少 主要是水溶性羧甲基纤维素，羧甲基羟乙基纤维素，羟乙基纤维素或甲基羟乙基纤维素，其中纤维素在碱性反应介质中在醚化之前，期间或之后与多官能化的交联剂反应 纤维素，选自丙烯酰胺亚甲基氯乙酰胺，二氯乙酸，磷酰氯或其中至少两个对纤维素起作用的基团是丙烯酰胺基的化合物，其中氯代甲酰胺基团是烯丙氧基偶氮甲碱基; 改进包括进行碱化，醚化和交叉 在异丙醇以外的液体反应介质中连接。

    Process for the production of water-adsorbing cellulose ethers
    9.
    发明授权
    Process for the production of water-adsorbing cellulose ethers 失效
    生产吸水纤维素醚的方法

    公开(公告)号：US4068067A

    公开(公告)日：1978-01-10

    申请号：US683968

    申请日：1976-05-06

    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 ,  B01J20/24 ,  B01J20/281 ,  C08B11/187 ,  C08B11/193 ,  C08B15/00 ,  C08B15/10 ,  G01N30/88 ,  C08B11/00 ,  C08B11/20

    CPC分类号： C08B15/10 ,  A61L15/28 ,  C08B11/193 ,  C08B15/005

    摘要： This invention relates to an improvement in the process for the production of water-adsorbing, but at least partially water-insoluble cellulose ethers in which cellulose is alkalized in a liquid reaction medium and etherified in a manner such that by etherification only an at least largely water-soluble carboxymethyl cellulose, carboxymethyl hydroxyethyl cellulose, hydroxyethyl cellulose or methyl hydroxyethyl cellulose is produced, and in which the cellulose is reacted in an alkaline reaction medium before, during, or after the etherification with a modification agent reactive with the still free hydroxyl groups of the cellulose anhydro glucose groups, said modification agent having one of the formulae ##STR1## in which R.sub.1 is hydroxyl, an acylamino or esterified carbamino group, andR.sub.2 is hydrogen or a carboxyl group,The improvement comprising effecting alkalization, etherification, and modification in a liquid reaction medium other than isopropyl alcohol.

    摘要翻译： 本发明涉及生产水吸附方法，但至少部分不溶于水的纤维素醚的改进，其中纤维素在液体反应介质中被碱化，并且以如此方式醚化，使得仅通过醚化至少大部分 产生水溶性羧甲基纤维素，羧甲基羟乙基纤维素，羟乙基纤维素或甲基羟乙基纤维素，其中纤维素在碱性反应介质中，在与仍然游离的羟基反应的改性剂进行醚化之前，期间或之后 的纤维素脱水葡萄糖基团，所述改性剂具有其中R1是羟基，酰基氨基或酯化的氨基氨基，R2是氢或羧基的结构式之一，其包含有效碱性化的改进 ，除了异丙醇以外的液体反应介质中的醚化和改性。

    Cigarette filter
    10.
    发明授权
    Cigarette filter 失效
    香烟过滤器

    公开(公告)号：US4015611A

    公开(公告)日：1977-04-05

    申请号：US562143

    申请日：1975-03-26

    申请人： Arno Holst ,  Michael Kostrzewa ,  Helmut Lask

    发明人： Arno Holst ,  Michael Kostrzewa ,  Helmut Lask

    IPC分类号： A24D3/10 ,  A24C5/50

    CPC分类号： A24D3/10

    摘要： This invention relates to a cigarette filter of cellulosic material composed at least partially of cellulose modified with an organic isocyanate or with higher molecular weight fatty acid groups, or of a naturally water-soluble cellulose ether rendered largely or completely insoluble in water by cross-linking or other means of modification, but still capable of adsorbing water.

    摘要翻译： 本发明涉及一种纤维素材料的香烟过滤嘴，其至少部分由至少部分由有机异氰酸酯或较高分子量脂肪酸基团改性的纤维素组成，或天然水溶性纤维素醚，其通过交联大大或完全不溶于水 或其他改性方式，但仍能吸附水分。