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公开(公告)号：US5442103A
公开(公告)日：1995-08-15
申请号：US153424
申请日：1993-11-16
IPC分类号： C07B61/00 , C07C51/265 , C07C63/38 , C07C51/21
CPC分类号： C07C51/265
摘要： A process for producing 2,6-naphthalenedicarboxylic acid by oxidizing 2,6-dimethylnaphthalene by molecular oxygen in the presence of a catalyst including cobalt, manganese and bromine. The oxidation reaction is performed by using a 2,6-dialkylnaphthalene mixture of 2,6-dimethynaphthalene and a small amount of 2,6-diisopropylnaphthalene as a raw material. Thus, the desired 2,6-naphthalenedicarboxylic acid can be produced at a high yield.
摘要翻译： 在包括钴，锰和溴的催化剂存在下，通过用分子氧氧化2,6-二甲基萘来生产2,6-萘二甲酸的方法。 通过使用2,6-二甲基萘和少量2,6-二异丙基萘作为原料的2,6-二烷基萘混合物进行氧化反应。 因此，可以高产率制备所需的2,6-萘二甲酸。
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公开(公告)号：US5196598A
公开(公告)日：1993-03-23
申请号：US779053
申请日：1991-10-18
申请人： Hiroshi Iwane , Takahiro Sugawara , Naoki Suzuki , Kimiko Kaneko
发明人： Hiroshi Iwane , Takahiro Sugawara , Naoki Suzuki , Kimiko Kaneko
IPC分类号： B01J23/14 , B01J23/75 , B01J23/755 , B01J27/053 , B01J27/128 , B01J27/135 , B01J27/138 , B01J27/18 , B01J27/185 , B01J27/232 , B01J27/25 , B01J27/26 , B01J31/04 , B01J31/22 , C07B61/00 , C07C407/00 , C07C409/08
CPC分类号： C07C409/08 , C07C407/00
摘要： A process for producing a polyhydroperoxy aromatic compound by oxidation of an aromatic hydrocarbon, e.g., 4,4'-diisopropylbiphenyl and 4,4'-diisopropylnaphthalene, with molecular oxygen is disclosed, in which the oxidation is carried out in the presence of a metal ion selected from cobalt, nickel, zinc and lead ions. Even in using a reaction apparatus made of an iron-containing metal generally employed in industry, a high conversion of secondary alkyl groups can be reached, and the desired polyhydroperoxy aromatic compound can be obtained in a high yield.
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公开(公告)号：US5019656A
公开(公告)日：1991-05-28
申请号：US485482
申请日：1990-02-27
申请人： Hiroshi Iwane , Takahiro Sugawara , Naoki Suzuki
发明人： Hiroshi Iwane , Takahiro Sugawara , Naoki Suzuki
IPC分类号： C07C37/20
CPC分类号： C07C37/20 , C07C37/115
摘要： A process for preparing p-hydroxybenzyl alcohol or a derivative thereof comprising reacting a phenol and a formaldehyde source under a basic condition is disclosed, wherein the reaction is carried out in an alcoholic organic solvent in the presence of a crown ether. The process achieves high selectivity toward the para position without involving high cost.
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公开(公告)号：US4937392A
公开(公告)日：1990-06-26
申请号：US317956
申请日：1989-03-02
摘要： A process for preparing 4,4'-dihydroxydiphenylmethane, which comprises reacting phenol with formaldehyde in the presence of an acidic catalyst and separating the aimed 4,4'-dihydroxydiphenylmethane from the crude dihydroxydiphenylmethane thus obtained, is disclosed. According to this process, 4,4'-dihydroxydiphenylmethane can be separated from its isomers and oligomers at a high purity and at a high yield, compared with those achieved by known methods. Thus highly useful 4,4'-dihydroxydiphenylmethane can be advantageously prepared on an industrial scale.
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公开(公告)号：US5220079A
公开(公告)日：1993-06-15
申请号：US807823
申请日：1992-04-24
申请人： Hiroshi Iwane , Takahiro Sugawara , Naoki Suzuki , Kimiko Kaneko
发明人： Hiroshi Iwane , Takahiro Sugawara , Naoki Suzuki , Kimiko Kaneko
CPC分类号： C07C37/115 , C07C37/20
摘要： A process for preparing phenols with high selectivities, comprising reacting a phenol compound and a formaldehyde source with a quaternary ammonium as a counter cation of a phenol anion in the presence of an alcoholic organic solvent.
摘要翻译： PCT No.PCT / JP91 / 00017 Sec。 371日期：1992年4月24日 102（e）日期1992年4月24日PCT 1991年1月11日PCT PCT。 WO91 / 18858 PCT公开号 日本1991年12月12日。一种制备具有高选择性的酚的方法，包括在醇有机溶剂的存在下，使酚化合物和甲醛源与作为酚阴离子的抗衡阳离子的季铵反应。
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公开(公告)号：US5175352A
公开(公告)日：1992-12-29
申请号：US817347
申请日：1992-01-06
申请人： Hiroshi Iwane , Takahiro Sugawara
发明人： Hiroshi Iwane , Takahiro Sugawara
IPC分类号： C07C51/265
CPC分类号： C07C51/265
摘要： A process for preparing 2,6-naphthalenedicarboxylic acid comprising oxidation reaction of 2,6-diisopropylnaphthalene or an oxidation product thereof with molecular oxygen in a solvent containing an aliphatic carboxylic acid in the presence of a catalyst comprising cobalt and manganese as heavy metals and a bromine compound is disclosed, in which said oxidation reaction is carried out in the presence of at least one nitrogen-containing compound selected from the group consisting of a pyridine compound, ammonia, a carboxylic acid ammonium salt, urea, a urea derivative, an amine, and a carboxylic acid amide. 2,6-Naphthalenedicarboxylic acid can be obtained at higher purity and in increased yield.
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公开(公告)号：US4568778A
公开(公告)日：1986-02-04
申请号：US699130
申请日：1985-02-07
IPC分类号： B01J21/00 , B01J29/00 , B01J31/00 , C07B61/00 , C07C27/00 , C07C37/14 , C07C39/06 , C07C67/00
CPC分类号： C07C37/14
摘要： A process for producing tert-amylphenols is described, comprising reacting isoamylene with phenols in the presence of an inorganic solid acid catalyst or an acidic ion exchange resin catalyst. This process permits efficient production of tert-amylphenols, i.e., 2,4-di-tert-amylphenol and p-tert-amylphenol. These tert-amylphenols are useful as starting materials for preparation of color formers for color photography, additives for resins, oil-soluble dyes, additives for lubricating oils, etc.
摘要翻译： 描述了生产叔戊基酚的方法，包括在无机固体酸催化剂或酸性离子交换树脂催化剂存在下使异戊烯与酚反应。 该方法可有效生产叔戊基苯酚，即2,4-二叔戊基苯酚和对叔戊基苯酚。 这些叔戊基酚可用作制备用于彩色摄影的成色剂，树脂添加剂，油溶性染料，润滑油添加剂等的起始原料。
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公开(公告)号：US4906791A
公开(公告)日：1990-03-06
申请号：US232956
申请日：1988-08-16
申请人： Makoto Imanari , Hiroshi Iwane , Takahiro Sugawara , Satoshi Ohtaka , Masashi Inaba , Mitsugi Kataoka
发明人： Makoto Imanari , Hiroshi Iwane , Takahiro Sugawara , Satoshi Ohtaka , Masashi Inaba , Mitsugi Kataoka
CPC分类号： C07C37/14
摘要： A process for preparing p-cumylphenol which comprises reacting phenol and .alpha.-methylstyrene in the presence of an inorganic solid acid catalyst having an acid point of an acid strength Ho of up to -3, for example, activated clay and recovering the aimed p-cumylphenol from the reaction mixture thus obtained by distilling the same while introducing an inert gas such as nitrogen and/or steam into the distillation system is disclosed. The p-cumylphenol thus obtained has a high purity and an improved color compared with those obtained by conventional methods.
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公开(公告)号：US5344969A
公开(公告)日：1994-09-06
申请号：US983411
申请日：1992-11-30
申请人： Hiroshi Iwane , Takahiro Sugawara , Miwa Shirasaki
发明人： Hiroshi Iwane , Takahiro Sugawara , Miwa Shirasaki
IPC分类号： C07C51/43
CPC分类号： C07C51/43
摘要： A process for purifying a crude naphthalenedicarboxylic acid containing impurities and coloring substances obtained by the oxidation of a di-substituted naphthalene, dispense with the use of a large amount of alkali or acid, and producing a naphthalenedicarboxylic acid having a high purity and good color effectively and in a high recovery is disclosed, which comprises dissolving the crude naphthalenedicarboxylic acid in a mixed solvent comprising an amine compound and an alcohol and conducting crystallization.
摘要翻译： 一种纯化含有杂质的粗萘二甲酸和通过二取代萘氧化得到的着色物质的方法，省去了大量的碱或酸，并且有效地制备了纯度高，颜色好的萘二羧酸 并且公开了高回收率，其包括将粗萘二甲酸溶解在包含胺化合物和醇的混合溶剂中并进行结晶。
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公开(公告)号：US5091592A
公开(公告)日：1992-02-25
申请号：US641899
申请日：1991-01-16
申请人： Hiroshi Iwane , Takahiro Sugawara , Kimiko Kaneko
发明人： Hiroshi Iwane , Takahiro Sugawara , Kimiko Kaneko
CPC分类号： C07C39/15
摘要： A process for preparing 4,4'-dihydroxybiphenyl comprising oxidizing 4,4'-diisopropylbiphenyl with molecular oxygen and decomposing the resulting oxidation product in the presence of an acid catalyst is disclosed, in which oxidation of 4,4'-diisopropylbiphenyl is carried out in the presence of ammonia or an ammonium salt. The oxidation product has an increased selectivity of 4,4'-diisopropylbiphenyl dihydroperoxide and, therefore, produces the desired product in high yield upon acid decomposition.
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