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    • 93. 发明授权
    • Detergent composition for petroleum refining apparatus
    • 石油精炼设备用洗涤剂组合物
    • US06852683B1
    • 2005-02-08
    • US09980079
    • 2000-06-02
    • Youichi MukogawaYutaka Sano
    • Youichi MukogawaYutaka Sano
    • C11D1/00C11D3/18C11D3/43C11D11/00C23G5/024C23G5/032F28G9/00C11D7/50
    • C11D3/43C11D3/18C11D11/0041
    • The detergent composition for petroleum refining apparatus in accordance with the present invention is one used as being mixed with a petroleum solvent when the inside of a petroleum refining apparatus is washed with the petroleum solvent in a nonaqueous system, wherein the detergent composition contains a surfactant having a solubility of at least 10 with respect to a diesel fuel at a temperature of 25° C. When this detergent composition for petroleum refining apparatus is used together with the petroleum solvent, soil components are rapidly impregnated with the petroleum solvent. Consequently, sufficient washing effects can be exhibited. As a result, the washing efficiency can be improved remarkably, whereby the washing time within the petroleum refining apparatus can be shortened greatly.
    • 本发明的石油炼制装置用洗涤剂组合物是在非水系统中用石油溶剂洗涤石油精制装置的内部而与石油溶剂混合的洗涤剂组合物,其中,洗涤剂组合物含有表面活性剂, 在25℃的温度下相对于柴油燃料的溶解度为至少10℃。当该石油精炼设备用洗涤剂组合物与石油溶剂一起使用时,用石油溶剂快速浸渍土壤成分。 因此,可以发挥足够的洗涤效果。 结果,可以显着提高洗涤效率,从而可以大大缩短石油精炼装置内的洗涤时间。
    • 95. 发明授权
    • Process for producing a high purity 2,4-dihydroxydiphenylsulfone
    • 高纯度2,4-二羟基二苯砜的制备方法
    • US5767318A
    • 1998-06-16
    • US586313
    • 1996-01-17
    • Masaaki HosodaMasahiro Makino
    • Masaaki HosodaMasahiro Makino
    • C07C315/06C07C317/22
    • C07C315/06
    • A process for producing a high purity 2,4'-dihydroxydiphenylsulfone (2,4'-isomer) comprising separating 2,4'-isomer from 4,4'-dihydroxydiphenylsulfone (4,4'-isomer) by adding a hydroxide of an alkali metal in an amount which is the total of an amount by mol 1.6 to 2.2 times as great as the amount by mol of 2,4'-isomer and an amount by mol 0.8 to 1.2 times as great as the amount by mol of 4,4'-isomer to a solution of a mixture of 2,4'-isomer and 4,4'-isomer containing 15% by weight or more of 2,4'-isomer in water, to allow 2,4'-isomer to remain dissolved in water in the form of a dialkali metal salt thereof and 4,4'-isomer to be precipitated from the solution in the form of a monoalkali metal salt thereof. A carbonate of an alkali metal may also be used. In order to accelerate the operation, an excess amount of the alkali may be added, which is subsequently neutralized. A high purity 2,4'-isomer having a purity of 95 to 99.5% by weight can be obtained easily with a high yield from a mixture of the isomers containing 15% by weight or more of 2,4'-isomer.
    • 一种生产高纯度2,4'-二羟基二苯砜(2,4'-异构体)的方法,包括通过加入氢氧化物将4,4'-二羟基二苯砜(4,4'-异构体)分离出2,4'-异构体 碱金属,其总量为2,4'-异构体的摩尔量的1.6〜2.2倍,摩尔量为0.8〜1.2倍的摩尔量 ,4'-异构体加入到含有15重量%或更多的2,4'-异构体的2,4'-异构体和4,4'-异构体在水中的混合物的溶液中,以使2,4'-异构体 以其二碱金属盐和4,4'-异构体的形式保持溶解在水溶液中,以其单碱金属盐的形式沉淀。 也可以使用碱金属的碳酸盐。 为了加速操作,可以加入过量的碱,随后中和。 通过含有15重量%以上的2,4'-异构体的异构体的混合物,可以容易地获得纯度为95〜99.5重量%的高纯度2,4'-异构体。
    • 98. 发明授权
    • Heat-sensitive recording material
    • 热敏记录材料
    • US5378674A
    • 1995-01-03
    • US216379
    • 1994-03-23
    • Norio KobayashiToshiaki TakahashiMasahiro MakinoMasaaki Hosoda
    • Norio KobayashiToshiaki TakahashiMasahiro MakinoMasaaki Hosoda
    • B41M5/30B41M5/333B41M5/337B41M5/28
    • B41M5/3336B41M5/3335B41M5/3375
    • A heat-sensitive recording material comprises a heat-sensitive color forming layer which is formed on a supporter and contains a colorless or light color leuco dyestuff as a color forming substance, a developer which develops color of the leuco dyestuff by reaction with it when heated and a sensitizer. The developer is 2,4'-dihydroxydiphenylsulfone having purity of 97 weight % or more and prepared by washing and drying crystal which is obtained by dissolving crude 2,4'-dihydroxydiphenylsulfone in an alcohol having 1 to 4 carbon atoms or in a mixture of an alcohol having 1 to 4 carbon atoms and water by heating and then cooling the solution or partially removing the solvent from the solution by distillation. The heat-sensitive recording material has excellent properties, such as reduced fog and excellent image preservation (weatherability).
    • 热敏记录材料包括形成在支持体上并含有无色或浅色无色染料作为成色物质的热敏成色层,当加热时与其反应而使无色染料显色的显色剂 和敏化剂。 显影剂是纯度为97重量%以上的2,4'-二羟基二苯基砜,其通过将粗制的2,4'-二羟基二苯基砜溶解在碳原子数为1〜4的醇中而得到的结晶洗涤干燥, 具有1至4个碳原子的醇和水,然后通过加热然后冷却溶液或通过蒸馏部分地从溶液中除去溶剂。 热敏记录材料具有优异的性能,例如减少雾度和优异的图像保存(耐候性)。