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公开(公告)号：US5525725A
公开(公告)日：1996-06-11
申请号：US293180
申请日：1994-08-19
IPC分类号： C07D201/16 , C07D201/04 , C07D201/06
CPC分类号： C07D201/16
摘要： A process for producing a high purity caprolactam is disclosed in which a crude caprolactam obtained by a catalytic rearrangement of cyclohexanone oxime is subjected(1) to mixing, while stirring, with at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons to form a liquid-liquid, two-layer liquid mixture, and then crystallizing caprolactam out of the liquid mixture;(2) to mixing with both at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons, and water to form a liquid mixture, separating the liquid mixture into a hydrocarbon layer and a water layer, and then recovering caprolactam from the water layer; or(3) to distillation in the co-presence of at least one aliphatic saturated hydrocarbon of 10 to 18 carbon atoms.
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公开(公告)号：US4469907A
公开(公告)日：1984-09-04
申请号：US471401
申请日：1983-03-02
申请人： Masashi Araki , Yasuhiko Higashio
发明人： Masashi Araki , Yasuhiko Higashio
CPC分类号： C07C5/08 , C07C5/03 , C07C2523/44
摘要： A selective hydrogenation method for highly saturated hydrocarbons by bringing a mixture of hydrocarbons of low hydrogenation degree having 4 or more carbon atoms containing the highly saturated hydrocarbons in the presence of a catalyst using a fixed bed reaction vessel, which comprises supplying a hydrogen gas in a state of plural splits along the flow direction of the fixed bed reaction vessel is disclosed. In accordance with this mehtod, only the highly unsaturated hydrocarbons are selectively hydrogenated without being accompanied by isomerization of olefins.
摘要翻译： 在使用固定床反应容器的催化剂存在下，使含有高饱和烃的碳原子数为4以下的低氢化度的烃的混合物进行高饱和烃的选择性氢化处理，其中包括在 公开了沿着固定床反应容器的流动方向的多个分割状态。 根据这个说明，只有高度不饱和的烃被选择性氢化而不伴随着烯烃的异构化。
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公开(公告)号：US5304643A
公开(公告)日：1994-04-19
申请号：US981474
申请日：1992-11-25
IPC分类号： B01J29/04 , C07D201/04
CPC分类号： B01J29/04 , C07D201/04 , Y02P20/52
摘要： .epsilon.-Caprolactam is prepared by subjecting cyclohexanone oxime in a gas phase to a catalytic reaction using zeolite catalysts in the presence of water and at least one compound selected from alcohols and ether compounds.
摘要翻译： （ε） - 己内酰胺通过在水和至少一种选自醇和醚化合物的化合物的存在下使用沸石催化剂将气相中的环己酮肟进行催化反应来制备。
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公开(公告)号：US5059736A
公开(公告)日：1991-10-22
申请号：US514060
申请日：1990-04-24
IPC分类号： C07C2/70
CPC分类号： C07C2/70 , C07C2527/11 , C07C2527/126 , C07C2531/02
摘要： A process for production of sec-butylbenzene from benzene and n-butene in the presence of a liquid aluminum chloride complex catalyst is disclosed, wherein the amount of aluminum chloride used as a component of the complex catalyst is from 0.3 to 5 wt % of the benzene used, the reaction temperature is from 20.degree. to 90.degree. C., and the weight ratio of isobutylbenzene formed as a by-product to sec-butylbenzene formed is not more than 0.01:1.
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公开(公告)号：US4359365A
公开(公告)日：1982-11-16
申请号：US194859
申请日：1980-10-07
摘要： A method of purification of crude .beta.-phenylethyl alcohol to give a highly pure .beta.-phenylethyl alcohol suitable as a perfume, which comprises subjecting the crude .beta.-phenylethyl alcohol to azeotropic distillation in the presence of an azeotropic solvent selected from water, an alkylene glycol, an alkylene glycol monoalkyl ether and a mixture of two or more kinds of these solvents, or extractive distillation in the presence of an extractive solvent selected from glycerine, an alkylene glycol, a polyalkylene glycol, an alkylene glycol monoalkyl ether, a polyalkylene glycol monoalkyl ether and a mixture of two or more kinds of these solvents.
摘要翻译： 一种净化粗β-苯乙醇的方法，得到适合作为香料的高纯度β-苯乙醇，其包括在粗品β-苯乙醇在共沸溶剂存在下进行共沸蒸馏，所述共沸溶剂选自水，亚烷基二醇 ，亚烷基二醇单烷基醚和两种或更多种这些溶剂的混合物，或在萃取溶剂存在下萃取蒸馏，所述萃取溶剂选自甘油，亚烷基二醇，聚亚烷基二醇，亚烷基二醇单烷基醚，聚亚烷基二醇单烷基 乙醚和两种或更多种这些溶剂的混合物。
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6.发明授权Process for reducing viscosity of reaction solution containing graft copolymer 失效含有接枝共聚物的反应溶液粘度降低的方法
公开(公告)号：US3991030A
公开(公告)日：1976-11-09
申请号：US564972
申请日：1975-04-03
IPC分类号： C08F255/00 , C08F255/04 , C08F291/02 , C08L19/00 , C08F255/06
CPC分类号： C08F291/02
摘要： The viscosity of a solution of graft copolymer resulting from solution graft copolymerization is greatly reduced, and the handling characteristics are improved, by adding water and a suspending agent to the solution to form a suspension. E.g., to a reaction solution resulting from grafting of styrene and acrylonitrile on EPDM in solution, there is added 20 parts water and 0.1 part polyvinyl alcohol, and the mixture is agitated to produce a low-viscosity suspension.
摘要翻译： 通过向溶液中加入水和悬浮剂以形成悬浮液，大大降低了由溶液接枝共聚产生的接枝共聚物溶液的粘度，提高了处理性能。 例如，在苯乙烯和丙烯腈在EPDM中在溶液中接枝的反应溶液中加入20份水和0.1份聚乙烯醇，搅拌该混合物以产生低粘度悬浮液。
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公开(公告)号：US5459261A
公开(公告)日：1995-10-17
申请号：US289577
申请日：1994-08-15
IPC分类号： C07D201/16 , C07D201/14
CPC分类号： C07D201/16
摘要： A process for producing a high purity caprolactam is disclosed in which a crude caprolactam obtained by a catalytic rearrangement of cyclohexanone oxime is subjected(1) to mixing, while stirring, with at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons to form a liquid-liquid, two-layer liquid mixture, and then crystallizing caprolactam out of the liquid mixture;(2) to mixing with both at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons, and water to form a liquid mixture, separating the liquid mixture into a hydrocarbon layer and a water layer, and then recovering caprolactam from the water layer; or(3) to distillation in the co-presence of at least one aliphatic saturated hydrocarbon of 10 to 18 carbon atoms.
摘要翻译： 公开了一种制备高纯度己内酰胺的方法，其中通过环己酮肟的催化重排获得的粗己内酰胺在搅拌下与至少一种选自脂族烃和脂环族烃的烃进行混合 形成液 - 液两层液体混合物，然后从该液体混合物中结晶己内酰胺; （2）与选自脂族烃和脂环烃的至少一种烃和水混合以形成液体混合物，将液体混合物分离成烃层和水层，然后从其中回收己内酰胺 水层; 或（3）在至少一种10至18个碳原子的脂族饱和烃的共存下进行蒸馏。
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公开(公告)号：US5362870A
公开(公告)日：1994-11-08
申请号：US46146
申请日：1993-04-15
IPC分类号： C07D201/16
CPC分类号： C07D201/16
摘要： A process for producing a high purity caprolactam is disclosed in which a crude caprolactam obtained by a catalytic rearrangement of cyclohexanone oxime is subjected(1) to mixing, while stirring, with at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons to form a liquid-liquid, two-layer liquid mixture, and then crystallizing caprolactam out of the liquid mixture;(2) to mixing with both at least one hydrocarbon selected from the group consisting of aliphatic hydrocarbons and alicyclic hydrocarbons, and water to form a liquid mixture, separating the liquid mixture into a hydrocarbon layer and a water layer, and then recovering caprolactam from the water layer; or(3) to distillation in the co-presence of at least one aliphatic saturated hydrocarbon of 10 to 18 carbon atoms.
摘要翻译： 公开了一种制备高纯度己内酰胺的方法，其中通过环己酮肟的催化重排获得的粗己内酰胺在搅拌下与至少一种选自脂族烃和脂环族烃的烃进行混合 形成液 - 液两层液体混合物，然后从该液体混合物中结晶己内酰胺; （2）与选自脂族烃和脂环烃的至少一种烃和水混合以形成液体混合物，将液体混合物分离成烃层和水层，然后从其中回收己内酰胺 水层; 或（3）在至少一种10至18个碳原子的脂族饱和烃的共存下进行蒸馏。
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公开(公告)号：US5315039A
公开(公告)日：1994-05-24
申请号：US981472
申请日：1992-11-25
IPC分类号： C07C249/14 , C07C251/44 , C07C209/82
CPC分类号： C07C249/14
摘要： Thermal decomposition of cycloalkanone oximes is inhibited by allowing nitrogen-containing compounds represented by the following formula (1) to coexist with the cycloalkanone oximes:NR.sub.1 R.sub.2 R.sub.3 (1)(wherein R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom or a lower alkyl group).
摘要翻译： 通过使由下式（1）表示的含氮化合物与环烷酮肟共存：NR1R2R3（1）（其中R1，R2和R3各自表示氢原子或低级烷基），可以抑制环烷酮肟的热分解， 。
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公开(公告)号：US4684758A
公开(公告)日：1987-08-04
申请号：US891173
申请日：1986-07-31
CPC分类号： C07C1/20 , C07C2/867 , C07C2521/16 , C07C2523/20 , C07C2527/173 , C07C2529/04
摘要： 2,5-Dimethyl-2,4-hexadiene which is an intermediate for preparing agricultural chemicals, insecticides or medicines, is prepared by bringing isobutylene and/or tert.-butyl alcohol into contact with isobutyl aldehyde in a gaseous phase at a temperature of 150.degree.-350.degree. C. in the presence of a niobic acid catalyst.
摘要翻译： 作为制备农药，杀虫剂或药物的中间体的2,5-二甲基-2,4-己二烯是通过使异丁烯和/或叔丁醇与异丁基醛在气相中在温度为 150℃-350℃，在铌酸催化剂存在下。
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