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公开(公告)号：US4334108A
公开(公告)日：1982-06-08
申请号：US164147
申请日：1980-06-30
申请人： Katsuhiko Hashimoto , Hirohiko Nambu , Kazuhiro Watari , Kenichi Mizuno , Tadateru Murakami , Yutaka Matsuoka , Mitsutoshi Moriyama , Norio Ohno
发明人： Katsuhiko Hashimoto , Hirohiko Nambu , Kazuhiro Watari , Kenichi Mizuno , Tadateru Murakami , Yutaka Matsuoka , Mitsutoshi Moriyama , Norio Ohno
IPC分类号： C07C27/00 , B01J4/00 , B01J27/00 , C07C37/08 , C07C37/50 , C07C37/60 , C07C39/07 , C07C39/08 , C07C67/00
摘要： Disclosed is a process for the preparation of phenols which comprises reacting an .alpha.-hydroxyalkyl-substituted aromatic compound and/or an .alpha.,.beta.-unsaturated alkyl-substituted aromatic compound with hydrogen peroxide in the presence of an acid catalyst, in which hydrogen peroxide is diluted with a diluent, especially acetone, so that the volume is at least 10 times the original volume, and the diluted hydrogen peroxide is supplied in a divided manner to at least two portions of a reaction vessel or the diluted hydrogen peroxide is scattered by sprinkling into the reaction vessel. According to a preferred embodiment, the diluted hydrogen peroxide is continuously supplied to the gas phase in the reaction vessel from a scattering device which is similar to but separate from a scattering device for supplying the starting aromatic compound, particularly, a product formed by oxidizing an isopropyl aromatic compound with molecular oxygen.According to this process, the efficiency of utilization of hydrogen peroxide is increased and a phenol of high quality can be obtained in a high yield with a high safety.
摘要翻译： 公开了一种制备酚的方法，其包括在酸催化剂存在下使α-羟基烷基取代的芳族化合物和/或α，β-不饱和烷基取代的芳族化合物与过氧化氢反应，其中过氧化氢是 用稀释剂，特别是丙酮稀释，使其体积为原始体积的至少10倍，稀释的过氧化氢以分开的方式供应至反应容器的至少两个部分，或者稀释的过氧化氢通过喷洒而分散 进入反应容器。 根据优选实施方案，将稀释的过氧化氢从反应容器中的气相连续地供给到与用于供给起始芳族化合物的散射装置相似但是分开的散射装置，特别是通过氧化 异丙基芳族化合物与分子氧。 根据该方法，提高了过氧化氢的利用效率，高安全性地获得了高质量的苯酚。
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公开(公告)号：US4434305A
公开(公告)日：1984-02-28
申请号：US326277
申请日：1981-12-01
申请人： Nobuo Kurosaka , Makoto Yasuda , Tadateru Murakami
发明人： Nobuo Kurosaka , Makoto Yasuda , Tadateru Murakami
CPC分类号： C07C409/12 , C07C37/08 , C07C407/00
摘要： High quality hydroquinone is produced from p-diisopropylbenzene dihydroperoxide at a high yield according to the disclosed process. The p-diisopropylbenzene dihydroperoxide is decomposed in the presence of an acid catalyst and the concentration of the hydroperoxide is maintained in the range of 0.1 to 1% by weight; the remaining hydroperoxide in the decomposition step is further subjected to an acid decomposition prior to the recovery of the formed hydroquinone product.
摘要翻译： 根据所公开的方法，以高产率从对二异丙基苯二氢过氧化物制备高品质对苯二酚。 对二异丙苯二氢过氧化物在酸催化剂存在下分解，氢过氧化物的浓度保持在0.1〜1重量％的范围内; 在回收形成的氢醌产物之前，分解步骤中剩余的氢过氧化物进一步进行酸分解。
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公开(公告)号：US4408083A
公开(公告)日：1983-10-04
申请号：US293510
申请日：1981-08-17
IPC分类号： C07C27/00 , C07C29/132 , C07C37/08 , C07C39/02 , C07C67/00 , C07C407/00 , C07C409/08 , C07C179/02
CPC分类号： C07C407/003
摘要： Disclosed is a method of treating hydroperoxide mixtures, which comprises bringing an oily hydroperoxide mixture containing (A) an aromatic hydroperoxide having a hydroperoxymethyl group directly bonded to the aromatic nucleus and (B) an aromatic hydroperoxide having a 2-hydroperoxy-2-propyl group bonded directly to the aromatic nucleus into contact with an aqueous alkali solution, separating the aqueous phase from the oil phase and decomposing at least a part of the component (A) extracted in the aqueous phase.According to this method, the starting oily hydroperoxide mixture can be converted to a mixture in which the primary hydroperoxide content is reduced without substantial loss of the tertiary hydroperoxide. Therefore, aromatic hydroperoxide mixtures suitable for production of phenols can advantageously be proceeded.
摘要翻译： 公开了一种处理氢过氧化物混合物的方法，其包括将含有（A）具有直接键合到芳香核上的氢过氧甲基的芳族氢过氧化物的油性过氧化氢混合物和（B）具有2-氢过氧-2-丙基的芳族氢过氧化物 直接与芳族核键合，与碱性水溶液接触，将水相与油相分离，并分解至少部分在水相中萃取的组分（A）。 根据该方法，起始的油性过氧化氢混合物可以转化为其中初级氢过氧化物含量降低而不会显着损失叔氢过氧化物的混合物。 因此，可以有利地进行适合于生产苯酚的芳族氢过氧化物混合物。
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