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17 条记录 (耗时 0.019 秒)

    Processes for the preparation of amides and amines from a material having carboxyl-containing polysaccharides and products therefrom
    3.
    发明授权
    Processes for the preparation of amides and amines from a material having carboxyl-containing polysaccharides and products therefrom 失效
    从含有羧基的多糖及其产物的材料制备酰胺和胺的方法

    公开(公告)号：US4952684A

    公开(公告)日：1990-08-28

    申请号：US201438

    申请日：1988-06-02

    申请人： Manssur Yalpani ,  Magdy M. Abdel-Malik

    发明人： Manssur Yalpani ,  Magdy M. Abdel-Malik

    IPC分类号： C07K17/12 ,  C08B11/20 ,  C08B15/06 ,  C08B37/00 ,  C12N11/12

    CPC分类号： C12N11/12 ,  C07K17/12 ,  C08B11/20 ,  C08B15/06 ,  C08B37/0033

    摘要： New amines and amides of carboxylated polysaccharides having the nitrogen of the amido and amino groups directly attached to the polysaccharides and method of making same, based on reacting in solution a material having carboxyl-containing polysaccharides, such as carboxymethyl cellulose, with ammonium donors having the general formula >NH such as primary and secondary amine reagents and with or without a reducing agent to obtain amides or amines. These products may be used for instance in biological separations, for the immobilization of proteins, for the removal of metal ions, as thickeners, and as suspension agents.

    摘要翻译： 基于在溶液中使具有含羧基多糖（例如羧甲基纤维素）的材料与具有多糖的铵供体的材料的反应，具有直接连接到多糖的酰氨基和氨基的氮的羧化多糖的新胺和酰胺及其制备方法 通式> NH如伯胺和仲胺试剂，有或没有还原剂，以获得酰胺或胺。 这些产品可用于例如生物分离，用于固定蛋白质，去除金属离子，作为增稠剂，以及作为悬浮剂。

    New catalytically oxidized polyglucosic units and methods of making same leading to aldehyde groups on the C-6 position of polyglucosic product and new products therefrom
    4.
    发明授权
    New catalytically oxidized polyglucosic units and methods of making same leading to aldehyde groups on the C-6 position of polyglucosic product and new products therefrom 失效
    新的催化氧化聚葡萄糖单元及其制备方法导致聚葡萄糖产品C-6位上的醛基及其新产物

    公开(公告)号：US4906579A

    公开(公告)日：1990-03-06

    申请号：US186369

    申请日：1988-04-26

    申请人： Manssur Yalpani ,  Magdy M. Abdel-Malik

    发明人： Manssur Yalpani ,  Magdy M. Abdel-Malik

    IPC分类号： C08B3/22 ,  C08B15/05 ,  C08B31/18 ,  C08B33/08

    CPC分类号： C08B3/22 ,  C08B15/05 ,  C08B31/18 ,  C08B33/08

    摘要： A method to selectively oxidize a polyglucose, on the oxygen of the hydroxy groups of the C-6 position of the glucose rings, while substantially maintaining the degree of polymerization of the polyglycosidic units, comprising heating a 6-sulfonyl polyglucose, for instance 6-O-para-(P)-toluene sulfonyl polyglucose with dimethyl sulfoxide (DMSO) in the presence of at least a catalytic amount of a catalyst selected from a member of the group consisting of: symmetrical--collidine, sodium bicarbonate and pyridine, to produce a polyglucose having aldehyde groups on the oxygen of the hydroxyl on the C-6 position of the glucose rings. In a preferred embodiment when pyridine is selected, this method enables use of that reaction to obtain other new products having other functional groups, mainly on the C-6 position of the glucose rings, without having to purify the aldehyde which may serve as intermediate.

    摘要翻译： 在葡萄糖环的C-6位的羟基上的氧上选择性氧化多葡萄糖的方法，同时基本上保持多糖苷单元的聚合度，包括加热6-磺酰基多糖，例如6-磺酰基聚葡萄糖， 在至少一种催化量的选自下列成员的催化剂存在下，用二甲基亚砜（DMSO）将O-对 - （P） - 甲苯磺酰基多糖葡萄糖：DMSO- 在葡萄糖环的C-6位上的羟基氧上具有醛基的聚葡萄糖。 在优选的实施方案中，当选择吡啶时，该方法能够使用该反应获得其它主要在葡萄糖环的C-6位上具有其它官能团的新产物，而不必纯化可用作中间体的醛。

    Aminoalkyl-derivatives of hydroxyalkyl-celluloses
    5.
    发明授权
    Aminoalkyl-derivatives of hydroxyalkyl-celluloses 失效
    羟烷基纤维素的氨基烷基衍生物

    公开(公告)号：US5004808A

    公开(公告)日：1991-04-02

    申请号：US216129

    申请日：1988-07-07

    申请人： Manssur Yalpani ,  Magdy M. Abdel-Malik

    发明人： Manssur Yalpani ,  Magdy M. Abdel-Malik

    IPC分类号： A61K35/18 ,  C07K16/06 ,  C08B11/193

    CPC分类号： C08B11/193 ,  A61K35/18 ,  C07K16/065

    摘要： A product comprising a water soluble, high molecular weight aminoalkyl-derivative of hydroxyalkyl-cellulose. The molecular weight of said cellulose is at least 50,000 daltons. One of the methods to obtain the product comprises reacting a hydroxyalkyl cellulose in a basic aqueous medium, in the presence of halogenalkylaminohalide compounds, to obtain a hydroxyalkyl cellulose having an alkylamino group which can be used as such or further reacted in the presence of an amide reducing agent, for instance sodium cyanoborohydride and a carbohydrate residue selected from the group consisting of mono-, di-, oligo-saccharides and starch.

    摘要翻译： 包含羟烷基纤维素的水溶性高分子量氨基烷基衍生物的产品。 所述纤维素的分子量至少为50,000道尔顿。 获得产物的方法之一包括在碱性水性介质中，在卤代烷基氨基卤化物存在下使羟烷基纤维素反应，得到具有烷基氨基的羟烷基纤维素，其可以直接使用或在酰胺存在下进一步反应 还原剂，例如氰基硼氢化钠和选自单糖，二糖，低聚糖和淀粉的碳水化合物残基。

    Functionalized poly(hydroxyalkanoates) and methods of manufacturing same
    8.
    发明授权
    Functionalized poly(hydroxyalkanoates) and methods of manufacturing same 失效
    官能化聚（羟基链烷酸酯）及其制造方法

    公开(公告)号：US5268422A

    公开(公告)日：1993-12-07

    申请号：US973730

    申请日：1992-11-09

    申请人： Manssur Yalpani

    发明人： Manssur Yalpani

    IPC分类号： C08B3/16 ,  C08B37/08 ,  C08G63/06 ,  C08G63/91 ,  C08G73/02 ,  C08G63/08 ,  C08G63/48 ,  C08G69/26 ,  C08G69/36

    CPC分类号： C08G63/912 ,  C08B3/16 ,  C08B37/003 ,  C08G63/06 ,  C08G73/02

    摘要： Functionalized poly(hydroxyalkanoate) derivatives having the general structural formula: ##STR1## wherein Y is hydrogen, a saccharide moiety or an alkenyl moiety having a molecular weight in the range of from about 25 to about 100,000; R.sub.1, R.sub.2 and R.sub.3 are, independently, hydrogen, an aromatic moiety, an alkyl moiety or an alkenyl moiety, said alkyl moiety or alkenyl moiety including from one to about nine carbon atoms; A is carbonyl or methylene; X is oxygen or imino (--NH); Z is selected from the group consisting of hydrogen, a saccharide moiety, an alkyl moiety and an alkenyl moiety having a molecular weight in the range of from about 25 to about 100,000, with the proviso that if Y is hydrogen, Z is not hydrogen; r.sub.1, r.sub.2 and r.sub.3 are, independently, a numeral 1, 2 or 3; m and n are, independently, a numeral in the range of from one to about 5; and q is a numeral in the range of from about 5 to about 10,000, and a novel method of manufacturing the functionalized poly(hydroxyalkanoate) derivatives, are disclosed.

    摘要翻译： 官能化的具有以下通式结构式的聚（羟基链烷酸酯）衍生物：其中Y是氢，糖部分或分子量在约25至约100,000范围内的链烯基部分; R 1，R 2和R 3独立地为氢，芳族部分，烷基部分或烯基部分，所述烷基部分或链烯基部分包含1至约9个碳原子; A是羰基或亚甲基; X是氧或亚氨基（-NH）; Z选自氢，糖部分，烷基部分和分子量在约25至约100,000范围内的烯基部分，条件是如果Y是氢，则Z不是氢; r1，r2和r3独立地为数字1,2或3; m和n独立地为1至5的数字; 并且q是约5至约10,000范围内的数字，并且公开了制备官能化聚（羟基链烷酸酯）衍生物的新方法。

    Processes for the preparation of branched, water soluble cellulose products
    9.
    发明授权
    Processes for the preparation of branched, water soluble cellulose products 失效
    制备支链水溶性纤维素产品的方法

    公开(公告)号：US4531000A

    公开(公告)日：1985-07-23

    申请号：US658036

    申请日：1984-10-05

    申请人： Manssur Yalpani

    发明人： Manssur Yalpani

    IPC分类号： C08B15/06 ,  C08B11/193

    CPC分类号： C08B15/06

    摘要： A process for preparing n-amino-n-deoxy cellulose where n is 2 or 3 and has the same value at each occurrence in one molecule. When n is 2 cellulose is selectively oxidized by (a) reacting it with triphenylmethyl chloride; then (b) reacting the product from (a) with acetic anhydride and dimethylsulfoxide. The product from (b) is then subjected to reductive amination. When n is 3 cellulose is reacted with dimethylsulfoxide and paraformaldehyde. The product from (a) is then reacted with acetic anhydride and dimethylsulfoxide and the product from (b) then subjected to reductive amination.

    摘要翻译： 一种制备正氨基正脱氧纤维素的方法，其中n为2或3，并且在一分子中在每次出现时具有相同的值。 当n为2时，纤维素通过（a）与三苯基甲基氯反应而被选择性氧化; 然后（b）使来自（a）的产物与乙酸酐和二甲基亚砜反应。 然后将来自（b）的产物进行还原胺化。 当n为3时，纤维素与二甲基亚砜和多聚甲醛反应。 然后将来自（a）的产物与乙酸酐和二甲基亚砜反应，然后将来自（b）的产物进行还原胺化。