Preparation of stable strong base cellulosic anion exchangers with
red-ox potentials
    1.
    发明授权
    Preparation of stable strong base cellulosic anion exchangers with red-ox potentials 失效
    稳定的强碱性红细胞阴离子交换剂的制备

    公开(公告)号:US4032293A

    公开(公告)日:1977-06-28

    申请号:US504646

    申请日:1974-09-09

    摘要: Strong base quaternary ammonium cellulose derivatives prepared under anhydrous conditions are further chemically modified in selected organic solvents by a sequential process that produces a partial cellulose ether in fibrous form that can be used in electro-chemical reactions covering a range of oxidation-reduction potentials. These new derivatives can be prepared such that they stabilize a given anion in the cellulose matrix until such time as its oxidation or reduction power is needed in desired chemical reactions. Although prepared in nonaqueous media, these red-ox cellulosic anion exchangers can be used to regulate oxidation-reduction reactions in aqueous media. Some of these new red-ox anion exchangers are dispersible in water and can be reprecipitated by organic solvents without losing their red-ox abilities during the process. Others are water insoluble. Thus these red-ox cellulosic exchangers can be tailor made to specific end uses such as for applications in separation of biochemical or organic mixtures, the identification of reducible or oxidizable chemicals, purification of polluted liquids by oxidation or reduction of contaminants.

    Diquaternary ammonium cellulosic fabrics with wrinkle resistant
properties
    3.
    发明授权
    Diquaternary ammonium cellulosic fabrics with wrinkle resistant properties 失效
    具有抗皱性能的二季铵纤维素织物

    公开(公告)号:US4067689A

    公开(公告)日:1978-01-10

    申请号:US728104

    申请日:1976-09-30

    摘要: Diethylaminoethyl (DEAE)-Cotton, prepared so that the tertiary amine nitrogens have unshared electrons and are thus in the Lewis-base form, is reacted with an alcoholic solution of an alpha-omega dihaloalkane to quaternize amino groups. The fabric produced by this process is crosslinked between tertiary amine nitrogen groups in cellulose and every alkylene group introduced is connected to two quaternary ammonium ions. The products of this process have strong base anion exchange properties and fabrics of high nitrogen content are imparted both wet and dry crease resistance.

    摘要翻译: 二乙基氨基乙基(DEAE)-Cotton,使得叔胺氮具有非共享电子并因此处于路易斯碱形式,与α-ω二卤代烷烃的醇溶液反应以季铵化氨基。 通过该方法生产的织物在纤维素中的叔胺氮基团之间交联,并且引入的每个亚烷基连接到两个季铵离子。 该方法的产品具有强碱性阴离子交换性能,并且具有高氮含量的织物赋予湿和抗折皱性。

    Stable crystalline cellulose III polymorphs
    7.
    发明授权
    Stable crystalline cellulose III polymorphs 失效
    稳定的结晶纤维素III多晶型物

    公开(公告)号:US4871370A

    公开(公告)日:1989-10-03

    申请号:US63357

    申请日:1987-06-18

    IPC分类号: D06M11/60 D06M13/332

    CPC分类号: D06M11/60 D06M13/332

    摘要: Novel cellulosic fiber with improved resistance to abrasion and increased permeability to chemicals characterized by highly stable crystalline cellulose III and cellulose IV forms is disclosed. Cellulose is selected from either fiber, yarn, fabric, cotton, or mercerized cotton treated with ammonia vapors at from about ambient to 140.degree. C. and from about 100 psi to 1700 psi for sufficient time to alter the interatomic planar distances and produce stable crystalline cellulose III polymorph. Crystalline cellulose III can also be immersed in ethylenediamine and then boiled in dimethylformamide to completely convert the III to cellulose IV.

    摘要翻译: 公开了具有改进的耐磨性和增加的渗透性的新型纤维素纤维,其特征在于高度稳定的结晶纤维素III和纤维素IV形式。 纤维素选自纤维,纱线,织物,棉花或用氨蒸气处理的丝光棉,在约环境温度至140℃和约100psi至1700psi下充分时间以改变原子间平面距离并产生稳定的结晶 纤维素III多晶型物。 结晶纤维素III也可以浸入乙二胺中,然后在二甲基甲酰胺中煮沸以将III完全转化成纤维素IV。

    Process for conversion of cellulose to amino acids by radiofrequency
plasma of nitrogen and hydrogen
    8.
    发明授权
    Process for conversion of cellulose to amino acids by radiofrequency plasma of nitrogen and hydrogen 失效
    通过氮和氢的射频等离子体将纤维素转化为氨基酸的方法

    公开(公告)号:US4414084A

    公开(公告)日:1983-11-08

    申请号:US409268

    申请日:1982-08-18

    IPC分类号: C07C227/04 C07G13/00

    CPC分类号: C07C227/04

    摘要: This invention relates to a process for converting cellulose to amino acids by radiofrequency plasma of nitrogen and hydrogen gases. Cellulose is placed between the electrodes in a radiofrequency plasma reaction chamber which is sealed and maintained at a reduced pressure. Hydrogen and nitrogen mixture is bled through the chamber and sufficient radiofrequency electric current applied until the cellulose is consumed, thereby producing a mixture of amino acids. The cellulose can be either cotton or wood derivatives.

    摘要翻译: 本发明涉及通过氮气和氢气的射频等离子体将纤维素转化为氨基酸的方法。 纤维素被放置在射频等离子体反应室中的电极之间,其被密封并保持在减压下。 氢气和氮气混合物通过室排放,施加足够的射频电流直到纤维素消耗,从而产生氨基酸的混合物。 纤维素可以是棉花或木材衍生物。