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公开(公告)号：US4978792A
公开(公告)日：1990-12-18
申请号：US323087
申请日：1989-03-14
IPC分类号： C07C209/36
CPC分类号： C08G59/504 , C07C209/36
摘要： A commercially advantageous process for producing m- or p-aminobenzylamine is provided, which is characterized by subjecting m- or p-nitrobenzaldehyde and ammonia to catalytic reduction in the presence of a reducing catalyst in an organic solvent; in the reduction, when nitrobenzaldehyde and ammonia are in advance made a mixed solution in an organic solvent, and this solution is added in divided manner, the yield being further improved.
摘要翻译： 提供了一种商业上有利的生产对 - 或对氨基苄胺的方法，其特征在于在还原催化剂存在下在有机溶剂中使对 - 硝基苯甲醛和氨进行催化还原; 在还原时，预先将硝基苯甲醛和氨在有机溶剂中制成混合溶液，分开加入该溶液，进一步提高收率。
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公开(公告)号：US5616806A
公开(公告)日：1997-04-01
申请号：US760771
申请日：1991-09-17
IPC分类号： B01J23/42 , B01J23/44 , B01J31/28 , C07B61/00 , C07C209/32 , C07C209/36 , C07C211/46 , C07C209/22
CPC分类号： C07C209/36
摘要： A process for the continuous preparation of aniline by hydrogenating nitrobenzene with hydrogen is disclosed which comprises the steps of suspending, in an aniline solvent, a catalyst of palladium or palladium-platinum which is deposited on a lipophilic carbon having an oil absorbency of at least 100, and carrying out reaction at a temperature of from 150.degree. to 250.degree. C. substantially in the absence of water while aniline and water formed in said reaction are continuously distilled off as vapor from the reaction product, and the concentration of nitrobenzene in the reaction solution is maintained at 0.01% by weight or less, wherein a zinc compound is added to the reaction system as a promotor and carbon monoxide is added to the hydrogen at a concentration of 1-500 ppm.
摘要翻译： 公开了通过用氢气氢化硝基苯连续制备苯胺的方法，该方法包括以下步骤：在苯胺溶剂中悬浮钯或钯 - 铂的催化剂，所述催化剂沉积在具有至少100的吸油性的亲脂性碳上 并且在150-250℃的温度下进行反应，基本上不存在水，而在反应中形成的苯胺和水作为蒸气从反应产物中连续蒸馏出去，反应中硝基苯的浓度 溶液维持在0.01重量％以下，其中将锌化合物作为促进剂加入反应体系中，一氧化碳以1-500ppm的浓度加入到氢气中。
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公开(公告)号：US4780522A
公开(公告)日：1988-10-25
申请号：US21706
申请日：1987-03-04
CPC分类号： C08G18/3863 , G02B1/043
摘要： A sulfur-containing polyurethane base lens resin is obtained by reacting one or more isocyanate compounds, which have two or more NCO groups, with one or more OH-containing compounds, which have two or more OH groups, in such proportions that the molar ratio of NCO groups to OH groups ranges from 0.5 to 1.5. At least one of said one or more OH-containing compounds contains one or more sulfur atoms in the molecule thereof. The total content of sulfur atoms in all OH-containing compounds is 20 wt. % or higher.
摘要翻译： 含硫聚氨酯基础透镜树脂通过使一种或多种具有两个或更多个NCO基团的异氰酸酯化合物与一种或多种具有两个或更多个OH基团的含OH化合物以使摩尔比 的NCO基团与OH基团的比例为0.5至1.5。 所述一种或多种含OH化合物中的至少一种在其分子中含有一个或多个硫原子。 所有含OH化合物中硫原子的总含量为20wt。 ％ 或更高。
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公开(公告)号：US4680369A
公开(公告)日：1987-07-14
申请号：US843222
申请日：1986-03-24
CPC分类号： C08G18/3863 , G02B1/043
摘要： A sulfur-containing polyurethane base lens resin is obtained by reacting one or more isocyanate compounds, which have two or more NCO groups, with one or more OH-containing compounds, which have two or more OH groups, in such proportions that the molar ratio of NCO groups to OH groups ranges from 0.5 to 1.5. At least one of said one or more OH-containing compounds contains one or more sulfur atoms in the molecule thereof. The total content of sulfur atoms in all OH-containing compounds is 20 wt. % or higher.
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公开(公告)号：US4625062A
公开(公告)日：1986-11-25
申请号：US675225
申请日：1984-11-27
申请人： Teruyuki Nagata , Akihiro Tamaki , Hiroki Ohnishi , Hideki Mizuta
发明人： Teruyuki Nagata , Akihiro Tamaki , Hiroki Ohnishi , Hideki Mizuta
IPC分类号： C07B61/00 , B01J23/00 , B01J23/38 , C07C20060101 , C07C67/00 , C07C209/36 , C07C211/46 , C07C213/00 , C07C217/84 , C07C85/11
CPC分类号： C07C213/00
摘要： 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitrobenzene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger-type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30% by weight, preferably 3 to 10% by weight, of water, the lower aliphatic carboxylic acid or both.
摘要翻译： 4-烷氧基苯胺在工业上有利地通过在贵金属催化剂存在下在含有低级脂族醇，硫酸和水或低级脂族羧酸或二者的混合溶剂中催化氢化硝基苯以诱导氢化和Bamberger- 类型重排反应。 混合溶剂每摩尔硝基苯含有至少10摩尔，优选30至60摩尔的低级脂族醇，1摩尔，优选2至7摩尔硫酸/摩尔硝基苯，2至30 重量％，优选3至10重量％的水，低级脂族羧酸或两者。
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公开(公告)号：US4689387A
公开(公告)日：1987-08-25
申请号：US843189
申请日：1986-03-24
CPC分类号： C08G18/773 , C08G18/3876 , C08G18/73 , C08G18/7642 , G02B1/041
摘要： An S-alkyl thiocarbamate base lens resin is obtained by reacting one or more NCO-containing compounds, such as xylylene diisocyanate, hexamethylene diisocyanate and/or tetrachloroxylylene diisocyanate, with one or more SH-containing aliphatic compounds, for example, a di(2-mercaptoalkyl) ether.
摘要翻译： 通过使一种或多种含NCO的化合物如亚二甲苯基二异氰酸酯，六亚甲基二异氰酸酯和/或四氯亚氧苯基二异氰酸酯与一种或多种含SH的脂族化合物反应，得到一种S-烷基硫代氨基甲酸酯基础透镜树脂，例如二（2 - 巯基烷基）醚。
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公开(公告)号：US5283365A
公开(公告)日：1994-02-01
申请号：US896696
申请日：1992-06-10
IPC分类号： C07C209/36
CPC分类号： C07C209/36
摘要： A process for the continuous preparation of aniline by hydrogenating nitrobenzene is disclosed which comprises the steps of suspending, in an aniline solvent, a catalyst of palladium or palladium-platinum which is deposited on a lipophilic carbon having an oil absorbency of at least 100, adding a zinc compound and an alkali metal carbonate or a zinc compound and an alkali metal bicarbonate as promotors to the reaction system, and carrying out reaction at a temperature of from 150 to 250.degree. C. substantially in the absence of water while aniline and water formed in said reaction are continuously distilled off as vapor from the reaction product, and the concentration of nitrobenzene in the reaction solution is maintained at 0.01% by weight or less.
摘要翻译： 公开了通过氢化硝基苯连续制备苯胺的方法，其包括以下步骤：在苯胺溶剂中悬浮沉积在吸油性至少为100的亲脂性碳上的钯或钯 - 铂催化剂，加入 锌化合物和碱金属碳酸盐或锌化合物和碱金属碳酸氢盐作为反应体系的促进剂，并且在150-250℃的温度下进行反应，基本上在不存在水的同时形成苯胺和水 在所述反应中作为蒸气从反应产物中连续蒸馏出来，反应溶液中硝基苯的浓度保持在0.01重量％以下。
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8.发明授权
公开(公告)号：US4952731A
公开(公告)日：1990-08-28
申请号：US232011
申请日：1988-08-15
IPC分类号： C07C209/18 , C07C85/06
CPC分类号： C07C209/18
摘要： Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in th presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines.The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.
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9.发明授权
公开(公告)号：US4871875A
公开(公告)日：1989-10-03
申请号：US246014
申请日：1988-09-14
IPC分类号： C07C209/18
CPC分类号： C07C209/18
摘要： Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines.The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.
摘要翻译： 二苯胺或N，N'-二苯基 - 苯二胺可以通过使苯胺或苯二胺与优选过量的苯酚反应来获得，苯酚的量为4至20摩尔/摩尔苯胺或苯二胺在氢气存在下 转移催化剂和对应于所述苯酚的环己酮。 在反应中使用的过量苯酚经历还原反应体系以形成环己酮，该环己酮又与苯胺或苯二胺反应形成希夫碱，因此被消耗。 希夫碱通过脱氢反应形成预期的产物，此时放出的氢还原酚形成环己酮。 因此，过量存在的苯酚在体系中形成溶剂，环己酮的起始原料和在形成所需产物时形成副产物的氢的受体。 因此，可以从苯胺和苯二胺以高选择性获得目标产物。 本发明的方法是工业生产特别是核取代的二苯胺的有利方法。
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10.发明授权
公开(公告)号：US4804783A
公开(公告)日：1989-02-14
申请号：US80440
申请日：1987-07-31
IPC分类号： C07C209/18 , C07C85/06
CPC分类号： C07C209/18
摘要： Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in the presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product. Hence, it becomes possible to obtain the intended product at a high selectivity from the anilines and phenylenediamines.The process of this invention is an advantageous process for the industrial production of especially the nuclearly substituted diphenylamines.
摘要翻译： 二苯胺或N，N'-二苯基 - 苯二胺可以通过使苯胺或苯二胺与优选过量的苯酚反应来获得，苯酚的量为4至20摩尔/摩尔苯胺或苯二胺在氢气存在下 转移催化剂和对应于所述苯酚的环己酮。 在反应中使用的过量苯酚经历还原反应体系以形成环己酮，该环己酮又与苯胺或苯二胺反应形成希夫碱，因此被消耗。 希夫碱通过脱氢反应形成预期的产物，此时放出的氢还原酚形成环己酮。 因此，过量存在的苯酚在体系中形成溶剂，环己酮的起始原料和在形成所需产物时形成副产物的氢的受体。 因此，可以从苯胺和苯二胺以高选择性获得目标产物。 本发明的方法是工业生产特别是核取代的二苯胺的有利方法。
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