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16 条记录 (耗时 0.012 秒)

    Process for gelling triaryl phosphates and resultant products
    1.
    发明授权
    Process for gelling triaryl phosphates and resultant products 失效
    三磷酸磷酸盐和结果产品的方法

    公开(公告)号：US3782990A

    公开(公告)日：1974-01-01

    申请号：US3782990D

    申请日：1972-04-07

    申请人： CHRIS CRAFT IND INC

    发明人： ROSIN J

    IPC分类号： C09K3/00 ,  B01D39/00 ,  B01J13/00 ,  B01J19/06 ,  C09K3/22

    CPC分类号： B01J19/06

    摘要： THIS INVENTION RELATES TO THE PROCESS OF MAKING GELLED TRIARYL PHOSPHATE ESTERS WHICH COMPRISES FORMING AN ACIDIC COMPOSITION COMPRISING A COLLOIDAL SOLUTION OF SILICA SUBSTANTIALLY UNIFORMLY DISTRIBUTED IN A TRIARYL PHOSPHATE ESTER AND TRANSFORMING THE COLLOIDAL SOLUTION TO A GEL BY NEUTRALIZING THE ACIDITY, AND TO CERTAIN OF THE PRODUCTS MADE BY THE PROCESS.

    Boarding step for boats
    2.
    发明授权
    Boarding step for boats 失效
    船只踏板

    公开(公告)号：US3584704A

    公开(公告)日：1971-06-15

    申请号：US3584704D

    申请日：1969-09-24

    申请人： CHRIS CRAFT IND INC

    发明人： ECKMANN JOHN A

    IPC分类号： B63B27/14 ,  E06C9/04

    CPC分类号： B63B27/14 ,  B63B2027/141

    摘要： A light-draft marine craft, preferably of the inboard motor type, has a prefabricated boarding step unit built into one or both of the beam sides thereof. The unit is outboard of the boat hull in its entirety and is mounted a trifle above the chine and substantially forward of the transom. A step device of the unit has spaced rigid legs slidable in the tubular sockets recessed and sealed in the hull, extending in the inboard and upward direction. The step device is spring-biased upwardly in its leg sockets, and has a bottom cross-tread, step or stirrup piece which is mounted from outboard by a water skier, swimmer or other user, whose weight draws the step device downwardly against its spring bias.

    Production of cyanoacetic acid
    5.
    发明授权
    Production of cyanoacetic acid 失效
    生产氰尿酸

    公开(公告)号：US3668231A

    公开(公告)日：1972-06-06

    申请号：US3668231D

    申请日：1970-09-09

    申请人： CHRIS CRAFT IND INC

    发明人： ROSIN JACOB ,  ANG FRANK S

    IPC分类号： C07C121/40

    CPC分类号： C07C255/00

    摘要： Cyanoacetic acid is produced in a sequence of reactions in which an aqueous solution of chloroacetic acid neutralized with sodium carbonate or sodium hydroxide to form sodium chloroacetate which, in turn, is reacted in a nucleophilic substitution with an alkali metal cyanide and the resultant cyanoacetate is then acidified to form an aqueous reaction mixture comprising cyanoacetic acid and the respective salts formed in such reaction sequence. This process is improved A. BY CONDUCTING THE NUCLEOPHILIC SUBSTITUTION REACTION IN THE PRESENCE OF AN ALKANOL AND AT A TEMPERATURE IN EXCESS OF ABOUT 80* C. to accelerate the reaction while substantially precluding undesirable side reactions, thereby increasing the yield of the cyanoacetate and decreasing the tendency of the reaction to form color bodies; and B. BY EXTRACTING THE ACIDIFIED, AQUEOUS REACTION MIXTURE WITH AN ALKANOL WHICH CONTAINS FROM NOT LESS THAN THREE TO ABOUT 12 CARBON ATOMS AND WHICH IS SUBSTANTIALLY INSOLUBLE IN SATURATED BRINE, USING THE AQUEOUS REACTION MIXTURE IN SUCH A MANNER THAT THE AMOUNT OF SALTS IN SUCH REACTION MIXTURE SUBSTANTIALLY SATURATE THE AMOUNT OF WATER PRESENT, THEREBY PERMITTING SUBSTANTIALLY ALL OF THE CYANOACETIC ACID TO BE EXTRACTED BY THE ALKANOL. By using these improvements in a process to produce cyanoacetic acid, it is possible to obtain extremely high yields of cyanoacetic acid using much less process equipment than presently employed to produce this product. The improved process furthermore facilitates the subsequent production of alkyl cyanoacetates and of cyanoacetamide.

    摘要翻译： 氰基乙酸按照一系列反应生成，其中用碳酸钠或氢氧化钠中和的氯乙酸水溶液形成氯乙酸钠，然后再将其与碱金属氰化物和所得的氰基乙酸酯进行亲核取代反应， 酸化以形成含有氰基乙酸的水性反应混合物和在该反应顺序中形成的各自的盐。 该方法得到改善A.通过在碱性条件下，在80℃以下的温度下进行核化替代反应，加速反应，同时基本排除不希望的副反应，从而提高氰乙酸酯的产率和降低 反应形成颜色体的趋势; 和B.通过使用酸性反应混合物，其中含有不少于三个至约12个碳原子的碱性反应混合物，并且其在饱和葡萄酒中是非常重要的，使用水性反应混合物，其中含有大量的盐 这种反应混合物主要饱和水的含量，主要允许由碱性物质提取的所有氰基酸。