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1. 发明授权

US4697038A Metal extraction using a novel group of compounds and chemical purification method 失效
标题翻译：金属提取采用新一组化合物和化学纯化方法
公开(公告)号：US4697038A
公开(公告)日：1987-09-29
申请号：US587068
申请日：1984-03-07
申请人： John H. P. Tyman
发明人： John H. P. Tyman
IPC分类号： C07C37/86 , C07C131/00
CPC分类号： C07C37/86 , C07C37/004
摘要： Compounds of the formula ##STR1## in which; X represents a straight chain hydrocarbyl group containing from 8 to 17 carbon atoms;Y represents H or the group--CH.dbd.NOH, andZ represents H or the group--CH.dbd.NOH or the group--CPh.dbd.NOH,provided that at least one of Y and Z represents H; or such compound containing at least one electronegative substituent in the aromatic ring, may be prepared from anacardic acid and its analogues, and are useful for the extraction of copper from acidic aqueous solution. Cardanol, which has the formula ##STR2## where n=0, 2, 4 or 6 is recovered from cashew nut shell liquid containing cardol and other dihydric phenols by reacting the dihydric phenols in the CNSL with an aldehyde while leaving the cardanol substantially unreacted, and vacuum distilling the cardanol from the reaction mixture.
摘要翻译：式中的化合物其中; X表示含有8〜17个碳原子的直链烃基; Y表示H或基团-CH = NOH，Z表示H或基团-CH = NOH或基团-ch = NOH，条件是Y和Z中的至少一个表示H; 或在芳香环中含有至少一个电负性取代基的这种化合物可以由漆树酸及其类似物制备，并且可用于从酸性水溶液中提取铜。通过使CNSL中的二元酚与醛反应而使腰果酚基本上未反应，通过使含有卡诺尔和其它二元酚的腰果壳液回收含有n = 0,4,4或6的式“ 并将真空从反应混合物中蒸馏出来。

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