Process for handling liquid cyanuric chloride
    3.
    发明授权
    Process for handling liquid cyanuric chloride 失效
    液态氰尿酰氯处理方法

    公开(公告)号:US4351644A

    公开(公告)日:1982-09-28

    申请号:US248442

    申请日:1981-03-27

    CPC classification number: C07D251/28 B01J8/002

    Abstract: Solid cyanuric chloride is supplied to the gas space of a cyanuric chloride melt with the help of a gas tight product stopper. Preferably there is used for this a screw conveyor in which the gas tight stopper is formed at the end of the screw conveyor; it is most favorable if the helix ends before the last section of the tube of the screw conveyor.

    Abstract translation: 借助于气密产品塞,将固体氰尿酰氯供应到氰尿酰氯熔体的气体空间。 优选地,使用螺旋输送机,其中气密塞在螺旋输送机的端部形成; 如果螺旋输送机的管的最后部分之前螺旋结束,则是最有利的。

    Process for the preparation of 2,4,6-trifluoro-1,3,5-triazine
    4.
    发明授权
    Process for the preparation of 2,4,6-trifluoro-1,3,5-triazine 失效
    制备2,4,6-三氟-1,3,5-三嗪的方法

    公开(公告)号:US4329458A

    公开(公告)日:1982-05-11

    申请号:US238328

    申请日:1981-02-26

    CPC classification number: C07D251/28

    Abstract: The present invention relates to a process for the preparation of 2,4,6-trifluoro-1,3,5-triazine (TFT) from 2,4,6-trichloro-1,3,5-triazine (TCT) or from mixed chlorinated/fluorinated 1,3,5-triazines by fluorination with sodium fluoride in dipolar aprotic solvents.The process is characterized in that TCT or mixed chlorinated/fluorinated 1,3,5-triazines or mixtures thereof are metered into a suspension of sodium fluoride in a dipolar, aprotic solvent, which is warmed to a temperature of between 120.degree. C. and 220.degree. C. and optionally contains a further solvent.

    Abstract translation: 本发明涉及从2,4,6-三氯-1,3,5-三嗪(TCT)制备2,4,6-三氟-1,3,5-三嗪(TFT)或从 混合氯化/氟化1,3,5-三嗪通过氟化氟化物在偶极非质子溶剂中氟化。 该方法的特征在于将TCT或混合氯化/氟化1,3,5-三嗪或其混合物计量加入到氟化钠在偶极非质子溶剂中的悬浮液中,将其温热至120℃至 220℃,任选地含有另外的溶剂。

    Process for producing trichloroisocyanuric acid from selected
symmetrical triazines
    5.
    发明授权
    Process for producing trichloroisocyanuric acid from selected symmetrical triazines 失效
    从选定的对称三嗪生产三氯异氰脲酸的方法

    公开(公告)号:US4055719A

    公开(公告)日:1977-10-25

    申请号:US699825

    申请日:1976-06-25

    CPC classification number: C07D251/36

    Abstract: Trichloroisocyanuric acid is produced by the reaction of a symmetrical triazine compound selected from the group consisting of ammelide, chlorosubstituted ammelide, ammeline and chlorosubstituted ammeline, with dichlorine monoxide in a gaseous mixture with a diluent gas. The gaseous mixture is comprised of from about 1 to about 30 percent by volume of dichlorine monoxide.

    Abstract translation: 三氯异氰脲酸是通过选自由ammelide,氯代取代的ammelide,ammeline和氯取代的ammeline组成的组中的对称三嗪化合物与稀释气体的气态混合物中的二氯一氧化物反应产生的。 气体混合物由约1至约30体积%的二氯一氧化
    物组成。

    Preparation of cyanuric chloride
    6.
    发明授权
    Preparation of cyanuric chloride 失效
    氰尿酰氯的制备

    公开(公告)号:US3947419A

    公开(公告)日:1976-03-30

    申请号:US515255

    申请日:1974-10-16

    CPC classification number: C01C3/004 C25B1/26

    Abstract: An improved process and apparatus for preparing cyanuric chloride by trimerizing cyanogen chloride in the presence of chlorine. The cyanogen chloride is produced by electrolytically reacting a solution of hydrogen cyanide or a salt thereof with chloride ion in an anode chamber of an electrolytic cell at a pH of less than 4.

    Abstract translation: 一种通过在氯存在下三氯化氰制备氰尿酰氯的改进方法和装置。 通过在小于4的pH的电解池的阳极室中使氰化氢或其盐与氯离子的溶液进行电解反应来制备氯化氰。

    Method for reclamation of melamine waste gas
    8.
    发明授权
    Method for reclamation of melamine waste gas 失效
    甲烷废气回收方法

    公开(公告)号:US3723430A

    公开(公告)日:1973-03-27

    申请号:US3723430D

    申请日:1970-10-28

    CPC classification number: C07D251/60 C07D251/28

    Abstract: Method for utilization of melamine waste gas in high pressure liquid phase melamine synthesis using urea or urea-thermal decomposition product as initial material, - characterized by synthesizing urea under the melamine synthesis pressure directly from melamine waste gas obtained as by-product in the synthesis or, depending on the case, with water or aqueous ammonium carbonate solution added thereto, and introducing the obtained lower pressure urea synthesis solution into decomposing stage of main urea synthesis.

    Abstract translation: 使用尿素或尿素 - 热分解产物作为初始材料的高压液相三聚氰胺合成中利用三聚氰胺废气的方法,其特征在于在三聚氰胺合成压力下直接由在合成中作为副产物获得的三聚氰胺废气合成尿素或 根据情况,加入水或碳酸铵水溶液,将得到的低压尿素合成溶液导入主要尿素合成的分解阶段。

    Chlorination of cyanuric acid
    9.
    发明授权
    Chlorination of cyanuric acid 失效
    氨基酸的氯化

    公开(公告)号:US3668204A

    公开(公告)日:1972-06-06

    申请号:US3668204D

    申请日:1970-08-21

    Applicant: FMC CORP

    Inventor: MESIAH RAYMOND N

    CPC classification number: C07D251/36

    Abstract: This invention provides a process for producing chloroisocyanuric acids by reacting cyanuric acid, sodium hypochlorite and chlorine at a temperature above zero* C. and preferably below 25* C., until the pH is between 1.7 and 3.5.

    Abstract translation: 本发明提供了一种通过在高于0℃,优选低于25℃的温度下使氰尿酸,次氯酸钠和氯反应生成氯异氰尿酸的方法,直到pH在1.7和3.5之间。

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