Process for producing the magnesium salt of
3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong's acid)
    4.
    发明授权
    Process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong's acid) 失效
    制备3-硝基 - 萘-1,5-二磺酸镁盐(硝基 - 阿姆斯壮酸)的方法

    公开(公告)号:US4348334A

    公开(公告)日:1982-09-07

    申请号:US113412

    申请日:1980-01-18

    CPC分类号: C07C309/00

    摘要: A process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid by sulfonating naphthalene, nitrating the sulfonation product, and separating the pure magnesium salt of 3-nitronaphthalene-1,5-disulfonic acid, which process comprises:(a) sulfonating naphthalene with liquid SO.sub.3 in the presence of an inert organic solvent at temperatures between -40.degree. and +20.degree. C.;(b) adding to the reaction mixture obtained a mixture consisting of about equal parts of 100% sulfuric acid and fully reacted crude nitration mixture from nitration of a previous nitration charge, separating from the resulting two-phase system the upper organic solvent phase by decanting, and removing from the Armstrong's acid anhydride acid slurry the remainder of organic solvent by distillation, or removing it during or after subsequent nitration, subsequently adding to the residue the amount of nitric acid required for nitration, and then nitrating;(c) adding then firstly water and afterwards, in the absence of the inert organic solvent, at 90.degree. to 120.degree. C., a compound releasing magnesium ions, the amount being such that, per mol of 3-nitronaphthalene-1,5-disulfonic acid, 1.1 to 1.3 mols of magnesium ions are added, and a sulfuric acid concentration of between 40 and 60 percent by weight (relative to the sulfuric acid and water) is maintained; and(d) separating the crystallized magnesium salt of 3-nitronaphthalene-1,5-disulfonic acid at a temperature of between 20.degree. and 70.degree. C., and subsequently optionally washing it with a maximum of 60 percent by weight of sulfuric acid and/or water, and optionally drying the product.

    摘要翻译: 通过磺化萘,硝化磺化产物和分离3-硝基萘-1,5-二磺酸的纯镁盐来生产3-硝基 - 萘-1,5-二磺酸的镁盐的方法,该方法包括 :(a)在-40℃〜+ 20℃的温度下,在惰性有机溶剂的存在下,用液态SO 3磺化萘。 (b)向反应混合物中加入由约等量的100%硫酸组成的混合物和来自先前硝化装置的硝化的完全反应的粗硝化混合物,通过倾析从所得两相体系中分离出上部有机溶剂相 ,并通过蒸馏从阿姆斯壮的酸酐酸浆中除去剩余的有机溶剂,或者在后续硝化过程中或之后将其除去,随后向残余物中加入硝化所需的硝酸量,然后硝化; (c)然后首先加入水,然后在不存在惰性有机溶剂的情况下,在90〜120℃下,加入释放镁离子的化合物,其用量为每摩尔3-硝基萘-1,5 二磺酸,加入1.1〜1.3摩尔的镁离子,硫酸浓度保持在40〜60重量%之间(相对于硫酸和水); 和(d)在20℃至70℃的温度下分离3-硝基萘-1,5-二磺酸的结晶镁盐,随后任选地用最多60重量%的硫酸洗涤, /或水,并任选地干燥产品。

    Recovery of sizes
    6.
    发明授权
    Recovery of sizes 失效
    恢复尺寸

    公开(公告)号:US4095947A

    公开(公告)日:1978-06-20

    申请号:US722519

    申请日:1976-09-13

    CPC分类号: D06B3/00

    摘要: Fabrics of which the warp is sized with water-soluble polymers of acrylic acid and/or their alkali metal salts or ammonium salts, are desized by treating the sized fabric with from 30 to 300 percent by weight of water, based on the dry weight of the fabric, and separating the resulting size solution from the fabric. The recovered size solution can be directly re-used for sizing.

    摘要翻译: 通过用水溶性丙烯酸和/或其碱金属盐或铵盐的聚合物将经纱尺寸的织物通过用30至300重量%的水处理尺寸的织物而降低,基于干燥重量 织物,并将所得尺寸溶液与织物分离。 恢复的尺寸溶液可以直接重新用于施胶。

    Purification of regenerated sizing liquors
    8.
    发明授权
    Purification of regenerated sizing liquors 失效
    再生上浆液的净化

    公开(公告)号:US4331539A

    公开(公告)日:1982-05-25

    申请号:US242303

    申请日:1981-03-10

    IPC分类号: D06M15/00 D06L1/14 C02F3/02

    CPC分类号: D06L1/14

    摘要: A method of processing regenerated liquors of polyacrylate, polyvinyl alcohol and carboxymethylcellulose (CMC) sizes for reuse, wherein the impurities are substantially removed, without noticeably changing the properties of the size, by constantly aerating the liquor and separating off the precipitate thereby formed.

    摘要翻译: 一种处理聚丙烯酸酯,聚乙烯醇和羧甲基纤维素(CMC)的再生液体用于再利用的方法,其中通过不断地充气液体并分离出由此形成的沉淀物,基本上除去了杂质,而没有明显改变尺寸的性质。

    Method and plant for waste water treatment
    9.
    发明授权
    Method and plant for waste water treatment 失效
    废水处理方法和设备

    公开(公告)号:US5993659A

    公开(公告)日:1999-11-30

    申请号:US795502

    申请日:1997-02-05

    摘要: The invention relates to a method for treating waste water from carwashes in a mechanical and a biological treatment step, the waste water after running through a silt chamber (2) being collected in a reservoir (3), then passed via an aerosol filter (7) into a bioreactor (8) where it is collected for reuse after biological clarification in a clean-water tank (11), and to a plant for carrying out in particular this method.

    摘要翻译: 本发明涉及一种在机械和生物处理步骤中处理来自洗手液的废水的方法,在通过淤泥室(2)运行后的废水被收集在储存器(3)中,然后通过气溶胶过滤器(7) )进入生物反应器(8),在生物反应器(8)中,其被收集用于在清洁水箱(11)中进行生物澄清后重新使用,以及特别是用于执行该方法的设备。

    Process for the preparation of sulphonic acid chlorides
    10.
    发明授权
    Process for the preparation of sulphonic acid chlorides 失效
    磺酰氯制备方法

    公开(公告)号:US4314950A

    公开(公告)日:1982-02-09

    申请号:US146827

    申请日:1980-05-05

    CPC分类号: C07C309/00 C07C317/00

    摘要: An improvement in a process for the preparation of a sulphonic acid chloride of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently hydrogen, a lower alkyl radical or a cycloalkyl radical, halogen, aryl, aralkyl, aryl ether or a radical --SO.sub.2 Cl, --SO.sub.2 -aryl ##STR2## or wherein adjacent radicals R.sup.1 and R.sup.2 are linked to form a cycloaliphatic, aromatic or hetero-aromatic ring which is optionally substituted by a sulphonic acid chloride group wherein an aromatic compound of the formula ##STR3## wherein R.sup.1, R.sup.2 and R.sup.3 have the above-identified meanings is reacted initially with chlorosulphonic acid and thereafter the reaction product is reacted with phosgene in the presence of a catalyst.

    摘要翻译: 制备式(I)的磺酰氯的方法的改进,其中R 1,R 2和R 3独立地是氢,低级烷基或环烷基,卤素,芳基,芳烷基,芳基醚或 基团-SO 2 Cl,-SO 2 - 芳基,或其中相邻基团R 1和R 2连接形成任选被磺酰氯基团取代的脂环族,芳族或杂芳族环,其中芳族 其中R1,R2和R3具有上述含义的式(II)化合物最初与氯磺酸反应,然后在催化剂存在下使反应产物与光气反应。