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1. 发明授权

US06491807B2 Process for producing sodium persulfate 有权
标题翻译：生产过硫酸钠的方法
公开(公告)号：US06491807B2
公开(公告)日：2002-12-10
申请号：US09789756
申请日：2001-02-22
申请人： Kenichi Kimizuka , Shoichiro Kajiwara , Naoki Kogure , Takamitsu Tsuruga
发明人： Kenichi Kimizuka , Shoichiro Kajiwara , Naoki Kogure , Takamitsu Tsuruga
IPC分类号： C25D900
CPC分类号： C25B1/285 , C25B15/08
摘要： An electrolytic production of sodium persulfate in a decreased number of steps with low unit power cost is described. Sodium persulfate is caused to crystallize by the reaction between an anode product and sodium hydroxide. The resulting sodium persulfate slurry is separated into a mother liquor and sodium persulfate crystals which are recovered and dried to obtain product sodium persulfate. In the process of the invention, ammonia liberated in the reaction-type crystallization of sodium persulfate is recovered into a cathode product, which is then neutralized by sodium hydroxide and/or ammonia. The neutralized solution is combined with sodium sulfate recovered from the mother liquor after recovering the sodium persulfate crystals and reused as a part of the starting material for an anolyte feed solution.
摘要翻译：描述了以较低的单位功率成本降低步数的电解生产过硫酸钠。通过阳极产物和氢氧化钠之间的反应使过硫酸钠结晶。将所得的过硫酸钠浆液分离成母液和过硫酸钠晶体，将其回收并干燥，得到过硫酸钠。在本发明的方法中，将过硫酸钠的反应型结晶中释放的氨回收到阴极产物中，然后用氢氧化钠和/或氨中和。在回收过硫酸钠晶体后，将中和的溶液与从母液中回收的硫酸钠合并，并重新用作阳极电解液进料溶液的起始原料的一部分。

2. 发明授权

US5349077A Process for producing alkylene carbonates 失效
标题翻译：碳酸亚烷基酯的制备方法
公开(公告)号：US5349077A
公开(公告)日：1994-09-20
申请号：US99461
申请日：1993-07-30
申请人： Masaharu Doya , Takashi Ohkawa , Yutaka Kanbara , Aksushi Okamoto , Kenichi Kimizuka
发明人： Masaharu Doya , Takashi Ohkawa , Yutaka Kanbara , Aksushi Okamoto , Kenichi Kimizuka
IPC分类号： C07D317/36 , C07D317/38 , C07C69/96
CPC分类号： C07D317/38 , C07D317/36
摘要： A process for producing alkylene carbonates which comprises reacting urea and glycols described by the general formula RCH(OH) CH.sub.2 OH; wherein R represents hydrogen or an alkyl group containing 1 to 4 carbons, using a catalyst containing zinc, magnesium, lead or calcium at reduced pressures. The alkylene carbonates are produced with high yield easily using raw materials which are comparatively inexpensive with a mild reaction that does not involve explosive or hazardous materials.
摘要翻译：一种制备碳酸亚烷基酯的方法，其包括使通式RCH（OH）CH 2 OH描述的脲和二醇反应; 其中R表示氢或含有1至4个碳的烷基，在减压下使用含锌，镁，铅或钙的催化剂。碳酸亚烷基酯可以容易地使用相对便宜的不具有爆炸性或有害物质的轻度反应的原料而高产率地制备。

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