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    • 6. 发明授权
    • Process for producing dimethyl esters of higher dibasic acid
    • 制备高级二元酸二甲酯的方法
    • US4525251A
    • 1985-06-25
    • US536160
    • 1983-09-12
    • Kazunori YamatakaToshiro Isoya
    • Kazunori YamatakaToshiro Isoya
    • C25B3/10
    • C25B3/10
    • Dimethyl ester of a higher dibasic acid, such as dimethyl sebacate, dimethyl brassylate or dimethyl thapsate, can be produced by a batchwise electrolytic condensation of a mixture of acid esters consisting of 2 moles or more of monomethyl adipate or monomethyl glutarate essentially free of glutaric acid and essentially free of glutaric anhydride, for each 1 mole of monomethyl ester of a C.sub.8 -C.sub.11 dicarboxylic acid, in methanol in which 0.15-3.5% by weight of water is kept during the electrolic condensation, the mixture of acid esters being partially neutralized with alkali metal.
    • PCT No.PCT / JP82 / 00451 Sec。 371日期1983年9月12日 102(e)日期1983年9月12日PCT PCT日期:1982年11月26日PCT公布。 出版物WO83 / 02463 日期:1983年7月21日。高级二元酸如二甲基癸二酸二甲酯,二甲基苯甲酸酯或二甲基甲酸酯的二甲酯可以通过将由2摩尔或更多的己二酸单甲酯组成的酸酯的混合物或 对于每1摩尔C8-C11二羧酸的单甲酯,在电解冷凝期间保持0.15-3.5重量%的水的甲醇中,基本上不含戊二酸和基本上不含戊二酸酐的单甲基戊二酸酯,混合物 的酸酯被碱金属部分中和。
    • 7. 发明授权
    • Filter press-type electrolytic cell
    • 压滤式电解槽
    • US4323444A
    • 1982-04-06
    • US173139
    • 1980-07-28
    • Chikayuki KawamuraToshiro IsoyaKazunori Yamataka
    • Chikayuki KawamuraToshiro IsoyaKazunori Yamataka
    • C25B9/00C25B3/10C25B9/20C25B11/10C25B15/08
    • C25B9/203C25B3/10
    • In a filter press-type electrolytic cell comprising a group of electrode plates arranged in parallel in face-to-face positions through insulators, a pair of metallic press heads for tightening the group of the electrode plates from both ends of the group, the press heads being provided at both ends of the group of the electrode plates, peripheral edges of the electrode plates being sealed by gaskets, supply and discharge of an electrolytic solution to and from spaces between the electrode plates being conducted through an inflow hole and an outflow hole bored on the individual electrode plates, an inlet and an outlet for the electrolytic solution are provided on only one of the press heads at both ends, the inlet is connected to a passage formed by the inflow holes of the individual electrode plates, the outlet is connected to a passage formed by the outflow holes of the individual electrode plates, an insulating plate of large thickness made from a non-electroconductive material is placed between the press head provided with the inlet and the outlet and the nearest electrode plate to the press head, and an inflow hole and an outflow hole are bored on the insulating plate and communicated with the inflow holes and the outflow holes of the individual electrode plates, respectively, thereby allowing the insulating plate to prevent the press head and the nearest electrode plate from direct facing. Galvanic corrosion of the press heads can be prevented.
    • 在包括通过绝缘体以面对面的位置平行布置的一组电极板的压滤型电解槽中,一对用于从组的两端紧固组电极板的金属压头,压机 在电极板组的两端设有磁头,电极板的周缘由垫片密封,电解液供给和排出电极板之间的空间,通过流入孔和流出孔 在各个电极板上钻孔,电解液的入口和出口仅设置在两端的一个压头上,入口连接到由各个电极板的流入孔形成的通道,出口是 连接到由各个电极板的流出孔形成的通道,由非导电材料制成的厚度大的绝缘板是pl 在设置有入口和出口的压头与压头之间的最近的电极板之间接合,并且在绝缘板上钻有流入孔和流出孔,并与各个电极的流入孔和流出孔连通 从而允许绝缘板防止压头和最近的电极板直接面对。 可以防止压头的电腐蚀。