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公开(公告)号:US4035293A
公开(公告)日:1977-07-12
申请号:US596708
申请日:1975-07-17
CPC分类号: C01B25/322 , C02F1/025 , C02F1/5236
摘要: Disclosed is a process for purifying an effluent containing acids such as phosphonic and phosphoric acids by the addition of CaO or Ca(OH).sub.2 in an amount ranging from 55-93 per cent by weight basis acids at a temperature of 35.degree. to 100.degree. C to a pH of 8 to 12. After removing the precipitated material, the effluent can be neutralized with CO.sub.2 gas. The precipitate can be calcined to tri calcium phosphate.
摘要翻译: 公开了一种通过在35〜100℃的温度下添加量为55-93重量%的CaO或Ca(OH)2来纯化含有酸如膦酸和磷酸的流出物的方法。 C至pH为8至12.在除去沉淀的材料后,流出物可用CO 2气体中和。 可以将沉淀物煅烧成三磷酸钙。
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公开(公告)号:US3953530A
公开(公告)日:1976-04-27
申请号:US216768
申请日:1972-01-10
CPC分类号: C07C37/50
摘要: Disclosed is a process for making ortho- and para-chlorophenols by treating alpha-cumylchloride with an aqueous hydrogen peroxide solution. The two products can be separated by distillation.
摘要翻译: 公开了通过用过氧化氢水溶液处理α-枯基氯化物来制备邻氯和对氯苯酚的方法。 这两种产品可以通过蒸馏分离。
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3.
公开(公告)号:US4110323A
公开(公告)日:1978-08-29
申请号:US741838
申请日:1976-11-15
IPC分类号: C07D201/02 , C07D223/12
CPC分类号: C07D201/02 , C07D223/12
摘要: This invention relates to a process of catalytically converting nitrobenzene to 2-amino-3H-azepines by the reaction of the nitrobenzene with trisaminophosphine and an amine of the formula HNR'.sub.2, where R' is lower alkyl containing 1 to 6 carbon atoms.In addition, this invention concerns the catalytic hydrogenation of 2-amino-3H-azepine to epsilon caprolactam.
摘要翻译: 本发明涉及通过硝基苯与三氨基膦的反应和式HNR'2的胺反应将硝基苯催化转化为2-氨基-3H-吖庚因的方法,其中R'是含有1至6个碳原子的低级烷基。
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