专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06222079B1 Method of increasing certain isomeric ratios in chlorinating substituted benzenes 失效
标题翻译：提高氯化取代苯中某些异构体比例的方法
公开(公告)号：US06222079B1
公开(公告)日：2001-04-24
申请号：US09429156
申请日：1999-10-28
申请人： Dean R. Lagerwall , Pravin M. Khandare , Hang-Chang Bobby Chen , Mark F. Lechner
发明人： Dean R. Lagerwall , Pravin M. Khandare , Hang-Chang Bobby Chen , Mark F. Lechner
IPC分类号： C07C1700
CPC分类号： C07C25/02 , C07C17/12
摘要： Disclosed is a method of increasing the percentage of certain isomers made when di or tri-substituted benzenes are chlorinated in the presence of a Friedel-Crafts catalyst. The use of about 0.001 to about 1 wt % a cocatalyst during chlorination alters the isomeric ratio of the product mixture. In particular, the percentage of the 2,5-isomer is increased when said substituted benzene is ortho or meta-substituted, the percentage of the 3,4-isomer is increased when said substituted benzene is para-substituted, and the percentage of the 2,4,5-isomer is increased when said substituted benzene is 2,4-disubstituted, 3,4-disubstituted, or 2,5-disubstituted.
摘要翻译：公开了当在Friedel-Crafts催化剂存在下将二或三取代的苯氯化时产生的某些异构体的百分比提高的方法。在氯化期间使用约0.001至约1重量％的助催化剂改变产物混合物的异构体比例。特别地，当所述取代的苯为邻位或间位取代时，2,5-异构体的百分比增加，当所述取代的苯为对位取代时，3,4-异构体的百分比增加，当所述取代的苯是2,4-二取代的，3,4-二取代的或2,5-二取代的时，2,4,5-异构体增加。

2. 发明授权

US6156945A Method of making high purity 2,4- and 3,4-dichlorotoluene 失效
标题翻译：制备高纯度2,4-和3,4-二氯甲苯的方法
公开(公告)号：US6156945A
公开(公告)日：2000-12-05
申请号：US428688
申请日：1999-10-28
申请人： Viesturs Lesins , Arthur H. Morth , Frank P. Bermel , David Y. Tang , Mark E. Lindrose , William L. Rueter , Dean R. Lagerwall , Pravin M. Khandare , Hang-Chang Bobby Chen , Mark F. Lechner
发明人： Viesturs Lesins , Arthur H. Morth , Frank P. Bermel , David Y. Tang , Mark E. Lindrose , William L. Rueter , Dean R. Lagerwall , Pravin M. Khandare , Hang-Chang Bobby Chen , Mark F. Lechner
IPC分类号： C07C17/12 , C07C17/395 , C07C25/02 , C07C22/00
CPC分类号： C07C25/02 , C07C17/12 , C07C17/395
摘要： Disclosed is a method of making high purity 2,4- and 3,4-dichlorotoluene from parachlorotoluene that contains some metachlorotoluene. About 0.0001 to about 5 wt % of a Friedel-Crafts catalyst and about 0.5 to about 10 equivalents of a brominating agent are added to the parachlorotoluene. The metachlorotoluene is brominated, but most of the parachlorotoluene is not brominated. Without separating the brominated products from the unbrominated products, about 0.5 to about 1.5 equivalents of a chlorinating agent are added, whereby only the unbrominated products (i.e., the parachlorotoluene) are chlorinated. The resulting 2,4-dichlorotoluene and 3,4-dichlorotoluene can be separated by distillation.
摘要翻译：公开了一种从含有一些甲氯甲苯的对氯甲苯制备高纯度2,4-和3,4-二氯甲苯的方法。将约0.0001至约5wt％的Friedel-Crafts催化剂和约0.5至约10当量的溴化剂加入对氯甲苯中。甲氯氟苯被溴化，但大部分对氯甲苯不溴化。在不将溴化产物与未溴化产物分离的情况下，加入约0.5至约1.5当量的氯化剂，由此只有未溴化产物（即对氯甲苯）被氯化。所得的2,4-二氯甲苯和3,4-二氯甲苯可通过蒸馏分离。

3. 发明授权

US06313337B1 Method of making benzoyl halides and nitriles 失效
标题翻译：制备苯甲酰卤和腈的方法
公开(公告)号：US06313337B1
公开(公告)日：2001-11-06
申请号：US09550456
申请日：2000-04-17
申请人： Dean R. Lagerwall , Daniel R. Thielen , Pravin M. Khandare , Mark F. Lechner
发明人： Dean R. Lagerwall , Daniel R. Thielen , Pravin M. Khandare , Mark F. Lechner
IPC分类号： C07C1714
CPC分类号： C07C253/20 , C07C51/58 , C07C51/64 , C07C63/04 , C07C63/70 , C07C255/50
摘要： A method of making a benzoyl halide is disclosed. Into a reactor is placed a reaction mixture of a benzotrihalide and a benzaldehyde having the respective general formulas where each A is independently selected from halogen, CF3, R, or OR, each B is independently selected from halogen, CF3, or R, R is alkyl from C1 to C10 or aryl from C6 to C12, each X is independently selected from Cl and Br, m is 0 to 3, and n is 0 to 2. Also added is at least about 10 ppm of a catalyst selected from the group consisting of zinc salts and copper salts, and an optional solvent. The addition of an ammonium halide to the product mixture forms the corresponding amide, which can be dehydrated to form the corresponding nitrile.
摘要翻译：公开了制备苯甲酰卤的方法。将反应器放入具有各自通式的苯并三卤吡喃和苯甲醛的反应混合物中，其中每个A独立地选自卤素，CF 3，R或OR，每个B独立地选自卤素，CF 3或R，R是烷基从C1至C10或C6至C12的芳基，每个X独立地选自Cl和Br，m为0至3，n为0至2.还加入至少约10ppm的选自以下的催化剂：的锌盐和铜盐，以及任选的溶剂。向产物混合物中加入卤化铵形成相应的酰胺，其可以脱水形成相应的腈。

4. 发明授权

US06201161B1 Method of reducing benzaldehyde or benzotrihalide content in a mixture 失效
标题翻译：降低混合物中苯甲醛或苯并三卤化物含量的方法
公开(公告)号：US06201161B1
公开(公告)日：2001-03-13
申请号：US09550458
申请日：2000-04-17
申请人： Pravin M. Khandare , Dean R. Lagerwall , Daniel R. Thielen
发明人： Pravin M. Khandare , Dean R. Lagerwall , Daniel R. Thielen
IPC分类号： C07C2200
CPC分类号： C07C17/395 , C07C17/14 , C07C17/38 , C07C45/43 , C07C47/54
摘要： Disclosed is a method of removing about 0.05 to about 20 mole % of a benzaldehyde or benzotrihalide from a mixture with a liquid compound that boils within about −10 to about ±5° C. of the boiling point of the benzaldehyde or benzotrihalide. To the mixture is added a benzotrihalide in an amount about stoichiometric to about 10 mole % in excess of stoichiometric, or, respectively, a benzaldehyde in an amount about stoichiometric with the amount of said benzotrihalide, where said benzaldehyde and said benzotrichloride react to form a benzalhalide and a benzoylhalide. The product mixture is distilled to isolate the products.
摘要翻译：公开了从与苯甲醛或苯并三卤化物的沸点在约-10至约±5℃内沸腾的液体化合物的混合物中除去约0.05至约20摩尔％的苯甲醛或苯并三卤化物的方法。向混合物中加入过量化学计量的约化学计量至约10摩尔％的苯并三卤化物，或分别加入与所述苯并三氯化物的量约为化学计量的苯甲醛，其中所述苯甲醛和所述苯并三氯化物反应形成苯甲酰卤和苯甲酰卤。将产物混合物蒸馏以分离产物。

5. 发明授权

US5773673A Method of making chlorinated hydrocarbons 失效
标题翻译：制造氯代烃的方法
公开(公告)号：US5773673A
公开(公告)日：1998-06-30
申请号：US886427
申请日：1997-07-01
申请人： Pravin M. Khandare , Edward A. Rowe
发明人： Pravin M. Khandare , Edward A. Rowe
IPC分类号： C07C17/10 , C07C17/392 , C07C19/01 , C07C21/02
CPC分类号： C07C21/02 , C07C17/10 , C07C17/392 , C07C19/01
摘要： Disclosed is a method of making chlorinated hydrocarbons. A mixture is prepared of a hydrocarbon or partially chlorinated hydrocarbon from C.sub.18 to C.sub.30 and either benzotrifluoride or parachlorobenzotrifluoride in an amount sufficient to liquefy the mixture at the chlorination temperature. The mixture is heated to a temperature of about 50.degree. to 100.degree. C. and sufficient chlorine gas is passed therethrough in the presence of UV light to form a chlorinated hydrocarbon that is about 60 to about 80 wt. % chlorine. One part by weight of the composition is added to at least two parts by weight per part of a C.sub.1 to C.sub.6 monohydric alcohol, which results in the precipitation of the chlorinated hydrocarbon. The precipitated chlorinated hydrocarbon can be removed from the composition by, for example, filtration.
摘要翻译：公开了制备氯代烃的方法。从C18至C30制备烃或部分氯化烃的混合物，以及三氯甲烷或对氯三氟甲苯的混合物，其量足以在氯化温度下液化混合物。将混合物加热至约50℃至100℃的温度，并在UV光的存在下将足够的氯气通过，形成约60至约80重量％的氯化烃。％氯。将1重量份的组合物加入到每份C1至C6一元醇至少2重量份中，这导致氯化烃的沉淀。沉淀的氯化烃可以通过例如过滤从组合物中除去。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式