Preparation of cyanoacetamide and 2,2-dibromo-3-nitrilopropionamide
compositions
    6.
    发明授权
    Preparation of cyanoacetamide and 2,2-dibromo-3-nitrilopropionamide compositions 失效
    氰基乙酰胺和2,2-二溴-3-硝基丙酰胺组合物的制备

    公开(公告)号:US4328171A

    公开(公告)日:1982-05-04

    申请号:US97468

    申请日:1979-11-26

    CPC classification number: C07C255/00 A01N37/34 Y02P20/125

    Abstract: An alkyl .alpha.-cyanoacetate is reacted with ammonia in a glycol solvent medium to form cyanoacetamide. Advantageously and without requirement of separation of the formed cyanoacetamide in glycol solvent (even though the next step and entire procedure can optionally commence with pre-formed cyanoacetamide), 2,2-dibromo-3-nitrilopropionamide is formed in situ by treating the cyanoacetamide in glycol with an appropriate mixture of bromine and an alkali metal bromate at about 10.degree. C-40.degree. C. Excellent and stable antimicrobial compositions may then be prepared, as part of an overall integrated process by incorporating in the resultant 2,2-dibromo-3-nitrilopropionamide-containing reaction mass an appropriate quantity of paraformaldehyde or equivalent satisfactory stabilizer at a suitably adjusted pH level.

    Abstract translation: 将α-氰基乙酸烷基酯与氨在二醇溶剂介质中反应形成氰基乙酰胺。 有利且不需要在二醇溶剂中分离形成的氰基乙酰胺(即使下一步和整个步骤可以任选地从预形成的氰基乙酰胺开始),2,2-二溴-3-硝基丙酰胺是通过将氰基乙酰胺 乙二醇与溴和碱金属溴酸盐的合适混合物在约10℃-40℃。然后可以制备出优异且稳定的抗微生物组合物,作为总体整合方法的一部分,通过将所得的2,2-二溴 - 含有3-硝基丙酰胺的反应物质适量的多聚甲醛或相当令人满意的稳定剂,在适当调节的pH值下。

    Waste Water Treatment Process
    7.
    发明申请

    公开(公告)号:US20210171368A1

    公开(公告)日:2021-06-10

    申请号:US16781676

    申请日:2020-09-10

    Abstract: A waste water treatment system utilizing a series of individual modules which, when assembled, form a beginning contaminate collection chamber attached at the starting end of a main fluid treatment tank, in which is housed an array of anodes and cathodes. A center contaminate collection chamber can be attached at the oppose end of the main treatment tank which provides an internal fluid pathway to allow fluid transfer from the first treatment tank into a second treatment tank. Alternatively, the center contaminate collection chamber can be used when multiples of treatment tanks are assembled to work in tandem, or an ending contaminate collection chamber can be attached to an ending treatment module to complete the expandable waste water treatment system.
    Expandability of the system can therefore accommodate various waste water treatment mechanisms, residence time and manner of treatment.

Patent Agency Ranking