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公开(公告)号：US5495038A
公开(公告)日：1996-02-27
申请号：US465135
申请日：1995-06-05
CPC分类号： C07C68/08
摘要： This invention provides a process for the purification of diphenyl carbonate (DPC) from crude products of diphenyl carbonate production. In this process, crude products are used that have a distillable fraction consisting of over 70 wt. % diphenyl carbonate and are fractionally crystallised from the melt (fractionating melt crystallisation).
摘要翻译： 本发明提供从碳酸二苯酯生产的粗产物中纯化碳酸二苯酯（DPC）的方法。 在该方法中，使用具有由70重量％以上组成的馏出馏分的粗产物。 碳酸二苯酯，并从熔体中分级结晶（分馏熔体结晶）。
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公开(公告)号：US5449791A
公开(公告)日：1995-09-12
申请号：US251456
申请日：1994-05-31
IPC分类号： C07B61/00 , C07C68/04 , C07C69/96 , C07D317/36 , C07D317/38
CPC分类号： C07D317/36 , Y02P20/142
摘要： A process is described for the catalytic preparation of propylene glycol carbonate (PGC) by reacting propylene oxide (POX) and CO.sub.2 in PGC as reaction medium at elevated temperature and elevated pressure and separating off from the catalyst the PGC formed. The process is carried out continuously under adiabatic temperature conditions. Per unit of time, PGC as reaction medium flows into the reactor at 7 to 350 times the amount of the PGC formed per unit of time. At all points of the reactor a CO.sub.2 excess is maintained over the other reaction partner POX. Of the effluent reaction mixture, 80 to 98% by weight are returned to the entrance of the reactor, while the remainder is worked up to give PGC. The sensible heat of the reaction product resulting from the adiabatic temperature conditions can be used for the work-up.
摘要翻译： 描述了通过在PGC中将环氧丙烷（POX）和CO 2作为反应介质在升高的温度和升高的压力下反应制备丙二醇碳酸酯（PGC）的方法，并从形成的PGC与催化剂分离。 该过程在绝热温度条件下连续进行。 每单位时间，作为反应介质的PGC以每单位时间形成的PGC的量的7〜350倍流入反应器。 在反应器的所有点上，超过另一个反应配偶体POX的CO 2过剩。 在流出物反应混合物中，80-98重量％返回到反应器的入口，其余部分被处理得到PGC。 由绝热温度条件产生的反应产物的显热可用于后处理。
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公开(公告)号：US5391767A
公开(公告)日：1995-02-21
申请号：US976877
申请日：1992-11-16
IPC分类号： B01J27/08 , C07B61/00 , C07D317/36 , C07D317/38 , C07D317/44 , C07D317/46 , C07D317/18
CPC分类号： C07D317/38
摘要： Alkylene carbonates can be prepared by catalytic reaction of alkylene oxides with carbon dioxide, catalysts which can be regenerated of the formulaa[MX]/b[ZnY.sub.2 ] (III)whereinM denotes an alkali metal,X and Y independently of one another denote chlorine, bromine or iodine anda and b denote fractions or integers in a range from 0.001 to 2being employed.The catalysts (III) can be regenerated by treating with a halogen compound. The halogen compounds which can be used for this purpose belong to the group comprising hydrogen halides, inorganic and organic acid halides, interhalogen compounds and organic halides with mobile halogen.
摘要翻译： 碳酸亚烷基酯可以通过烯化氧与二氧化碳的催化反应制备，催化剂可以再生成式[MX] / b [ZnY 2]（III），其中M表示碱金属，X和Y彼此独立地表示 氯，溴或碘，a和b表示使用0.001至2范围内的分数或整数。 催化剂（III）可以通过用卤素化合物处理再生。 可以用于此目的的卤素化合物属于包含卤化氢，无机和有机酰卤，卤间化合物和具有可移动卤素的有机卤化物的基团。
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4.发明授权
公开(公告)号：US5508442A
公开(公告)日：1996-04-16
申请号：US251229
申请日：1994-05-31
IPC分类号： C07C68/04 , C07C69/96 , C07D317/36 , C07D317/38 , C07D321/00 , C07D323/00
CPC分类号： C07D317/36 , C07D317/38 , Y02P20/142
摘要： A bubble column reactor is described which is characterized by a slenderness ratio at a ratio of height to diameter of 2 to 50, a feed, at the bottom end of the bubble column, for the ethylene glycol carbonate (EGG) or propylene glycol carbonate (PGC) already present serving as reaction medium, one or more metering sites for the starting materials CO.sub.2 and ethylene oxide (EOX) or propylene oxide (POX) above the feed for the reaction medium, an outlet for the reaction mixture at the top end of the bubble column, a dividing apparatus connected thereto for the reaction mixture flowing off for dividing it into reaction mixture to be taken off and worked up on the one hand and reaction mixture to be recycled on the other hand and additionally a return line to the feed for the reaction mixture to be recycled. This bubble column reactor can be advantageously used in a process for the continuous preparation of EGG or PGC which is carried out in the temperature range from 100.degree. to 200.degree. C., in the pressure range from 5 to 200 bar and at a molar ratio of 1.01 to 1.5 mol of CO.sub.2 per mol of alkylene oxide in EGG or PGC already present as reaction medium in an amount which is 7 to 350 times that of the newly formed EGG or PGC.
摘要翻译： 描述了泡罩塔反应器，其特征在于高度与直径的比率为2-50的细长比，在气泡塔的底端，乙二醇碳酸酯（EGG）或丙二醇碳酸酯（ PGC）作为反应介质，用于反应介质的进料上方的原料CO 2和环氧乙烷（EOX）或环氧丙烷（POX）的一个或多个测量位点，反应混合物的顶部出口 气泡塔，连接到其上的分离装置，用于将反应混合物流出以将其分离成反应混合物，一方面将其除去和处理，另一方面将反应混合物再循环，另外还有一个到进料的回流管 使反应混合物回收。 该气泡塔式反应器可有利地用于连续制备EGG或PGC的方法中，该方法在100至200℃的温度范围内，压力范围为5至200巴，摩尔比 以EGG或PGC中的环氧烷的摩尔量为1.01〜1.5摩尔，作为反应介质，其量为新形成的EGG或PGC的7〜350倍。
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5.发明授权
公开(公告)号：US5625097A
公开(公告)日：1997-04-29
申请号：US524556
申请日：1995-09-07
申请人： Hans-Josef Buysch , Christine Mendoza-Frohn , J urgen Scharschmidt , Ulrich Notheis , Rudolf J. Klee , Gerhard Darsow
发明人： Hans-Josef Buysch , Christine Mendoza-Frohn , J urgen Scharschmidt , Ulrich Notheis , Rudolf J. Klee , Gerhard Darsow
IPC分类号： B01J23/40 , B01J23/46 , B01J23/54 , B01J23/58 , B01J23/656 , B01J27/02 , B01J27/053 , B01J27/055 , B01J27/25 , C07B61/00 , C07C209/24 , C07C209/28 , C07C211/55 , C07C209/22
CPC分类号： C07C209/28 , B01J23/464 , B01J23/6562 , B01J27/055
摘要： The preparation of optionally substituted diphenylamine by reaction of optionally substituted aniline with optionally substituted cyclohexanone using a supported Rh catalyst containing rhodium or a combination of rhodium with another platinum metal from the group of palladium, platinum, ruthenium or iridium and which can additionally contain chromium, manganese, alkali metal and a sulphur compound is described. The catalyst of the invention is prepared from halide-free starting materials. The Rh catalyst is distinguished by a low dependence of the initial selectivity, the selectivity in the run-in state and the running-in time on the conditions of the reductive pretreatment and requires only short running-in times to the optimum state.
摘要翻译： 通过任选取代的苯胺与任选取代的环己酮的反应制备任选取代的二苯胺，使用含有铑的负载Rh催化剂或铑与钯，铂，钌或铱的另一种铂金属的组合，并可另外含有铬， 描述了锰，碱金属和硫化合物。 本发明的催化剂由无卤素起始原料制备。 Rh催化剂的特征在于初始选择性的低依赖性，导入状态下的选择性和还原预处理条件下的进入时间，并且仅需要短时间进入最佳状态。
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6.发明授权Process for purifying ethylene glycol carbonate (EGC) by adsorption on activated carbon 失效通过在活性炭上吸附净化乙二醇碳酸酯（EGC）的方法
公开(公告)号：US5489696A
公开(公告)日：1996-02-06
申请号：US421726
申请日：1995-04-13
IPC分类号： B01D15/00 , C07C68/08 , C07C69/08 , C07C69/96 , C07D317/08
CPC分类号： C07C68/08
摘要： Ethylene glycol carbonate (EGC) can be obtained in purified form from contaminated material which contains impurities from the production or work-up process, by subjecting it to treatment with activated carbon. The treatment is carried out at 40.degree.-250.degree. C. and at 1-200 bar. The activated carbon has a BET surface area of 200-3,000 m.sup.2 /g.
摘要翻译： 乙二醇碳酸酯（EGC）可以从生产或后处理过程中含有杂质的污染物质中以活性炭处理而得到。 处理在40°-250℃和1-200巴下进行。 活性炭的BET表面积为200-3000m 2 / g。
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7.发明授权
公开(公告)号：US5395976A
公开(公告)日：1995-03-07
申请号：US166178
申请日：1993-12-10
IPC分类号： C07C27/04 , C07C29/20 , C07C35/08 , C07C45/00 , C07C49/403
CPC分类号： C07C29/20 , C07C45/006 , C07C2101/14
摘要： In the hydrogenation of phenol with H.sub.2 over Pd supported catalysts, the ratio of the products formed, cyclohexanone and cyclohexanol, can be predetermined by specific treatment of the catalysts during the initial activation and regeneration by O.sub.2 pretreatment and H.sub.2 treatment, the following time/temperature conditions being used:a) Cyclohexanone:cyclohexanol=85:15 to 98:2a1) for initial activation, no O.sub.2 pretreatment and H.sub.2 treatment for 50-10 hours at 300.degree.-500.degree. C.;a2) for regeneration, O.sub.2 pretreatment for 30-0.5 hours at 220.degree.-380.degree. C. and H.sub.2 treatment for 2-6 hours at 150.degree.-250.degree. C.;b) Cyclohexanone:cyclohexanol=30:70 to below 85:15b1) for initial activation, O.sub.2 pretreatment for 40-3 hours at 250.degree.-500.degree. C. and H.sub.2 treatment for 2-6 hours at 150.degree.-250.degree. C.;b2) for regeneration, O.sub.2 pretreatment for 30-0.5 hours at 380.degree.-600.degree. C. and H.sub.2 treatment for 2-6 hours at 150.degree.-250.degree. C.
摘要翻译： 在用Pd负载型催化剂对苯酚进行氢化反应中，形成的产物 - 环己酮和环己醇的比例可以通过催化剂在初始活化和再生过程中通过O2预处理和H2处理，以下时间/温度 使用的条件：a）环己酮：环己醇= 85:15至98:2 a1）初始活化，在300-500℃下不进行O 2预处理和H2处理50-10小时。 a2）用于再生，O2预处理在220-380℃下30-0.5小时，在150-250℃下H2处理2-6小时。 b）环己酮：环己醇= 30:70〜低于85:15 b1）初始活化，在250〜-500℃下进行O 2预处理40-3小时，在150〜250℃下H2处理2-6小时 。 b2）进行再生，在380〜-600℃下进行O 2预处理30〜0.5小时，在150〜250℃下进行H2处理2-6小时。
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公开(公告)号：US5763717A
公开(公告)日：1998-06-09
申请号：US524554
申请日：1995-09-07
申请人： Hans-Josef Buysch , Christine Mendoza-Frohn , Jurgen Scharschmidt , Ulrich Notheis , Rudolf Jurgen Klee , Gerhard Darsow
发明人： Hans-Josef Buysch , Christine Mendoza-Frohn , Jurgen Scharschmidt , Ulrich Notheis , Rudolf Jurgen Klee , Gerhard Darsow
摘要： A description is given of the preparation of hydroxybiphenyl by dehydrogenation of completely or partially hydrogenated precursors using a supported Rh catalyst which additionally contains chromium, manganese and alkali metal and can contain a sulphur compound. The Rh catalyst which can be used according to the invention is prepared from halide-free starting materials. The Rh catalyst is distinguished by a low dependence of the initial selectivity, with the selectivity in the run-in state and the running-in time on the conditions of the reductive pretreatment and requires only short running-in times to reach the optimum state.
摘要翻译： 描述了使用另外含有铬，锰和碱金属并且可以含有硫化合物的负载的Rh催化剂，通过完全或部分氢化的前体脱氢来制备羟基联苯。 根据本发明可以使用的Rh催化剂由无卤素起始材料制备。 Rh催化剂的特征在于初始选择性的低依赖性，在导入状态下的选择性和还原预处理条件下的进入时间，并且仅需要短的进入时间才能达到最佳状态。
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9.发明授权
公开(公告)号：US5583251A
公开(公告)日：1996-12-10
申请号：US414543
申请日：1995-03-31
申请人： Hans-Josef Buysch , Manfred Gallus , Herbert Gebauer , Otto Immel , Christine Mendoza-Frohn , Reinhard Langer
发明人： Hans-Josef Buysch , Manfred Gallus , Herbert Gebauer , Otto Immel , Christine Mendoza-Frohn , Reinhard Langer
IPC分类号： B01J23/44 , B01J23/46 , B01J23/50 , B01J23/52 , C07B61/00 , C07C263/10 , C07C263/20 , C07C265/12 , C08G18/76
CPC分类号： C07C263/20 , C07C263/10
摘要： Isocyanates or isocyanate mixtures which contain no appreciable amounts of color causing materials are produced by phosgenating the amine corresponding to the desired isocyanate and treating the isocyanate-containing phosgenation mixture with hydrogen in the presence of a supported catalyst. The supported catalyst is in a form such that its shortest dimension is from about 0.3 to about 3.0 mm. This catalyst has a BET surface of from about 0.5 to about 150 m.sup.2 /g. No alkali material can be present in the catalyst. These isocyanates are particularly useful for the production of light-colored foams.
摘要翻译： 通过使对应于所需异氰酸酯的胺光气化并在负载催化剂存在下用氢气处理含异氰酸酯的光气化混合物来产生不含有明显量的着色材料的异氰酸酯或异氰酸酯混合物。 负载催化剂的形式是使其最短尺寸为约0.3至约3.0mm。 该催化剂具有约0.5至约150m 2 / g的BET表面积。 催化剂中不能存在碱性物质。 这些异氰酸酯特别可用于生产浅色泡沫。
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公开(公告)号：US5350862A
公开(公告)日：1994-09-27
申请号：US984789
申请日：1992-12-03
申请人： Paul Wagner , Hans-Josef Buysch , Alexander Klausener , Franz-Josef Mais , Christine Mendoza-Frohn
发明人： Paul Wagner , Hans-Josef Buysch , Alexander Klausener , Franz-Josef Mais , Christine Mendoza-Frohn
IPC分类号： C07B61/00 , C07D317/38 , C07D317/36
CPC分类号： C07D317/38
摘要： A process is described for the catalytic preparation of ethylene glycol carbonate by reaction of ethylene oxide and CO.sub.2 in ethylene glycol carbonate as the reaction medium at elevated temperature and at elevated pressure with work-up by distillation to separate the resulting ethylene glycol carbonate from the catalyst. The process is carried out continuously under adiabatic temperature conditions. Per unit of time, ethylene glycol carbonate as reaction medium runs into the reactor in a amount 10 to 120 times that of ethylene glycol carbonate formed per unit of time. A CO.sub.2 excess over the other reaction partner ethylene oxide is maintained at all sites of the reactor. 80 to 98% by weight of the reaction mixture flowing out is returned to the inlet of the reactor, while the remainder is worked up by distillation to give ethylene glycol carbonate. The sensible heat produced in the reaction product as a result of the adiabatic temperature conditions, is used for the work-up.
摘要翻译： 描述了通过环氧乙烷和CO 2在乙二醇碳酸酯中作为反应介质在升高的温度和升高的压力下反应制备乙二醇碳酸酯的方法，通过蒸馏进行后处理以将所得的乙二醇碳酸酯与催化剂分离 。 该过程在绝热温度条件下连续进行。 每单位时间，作为反应介质的乙二醇碳酸酯以每单位时间形成的乙二醇碳酸酯的量的10至120倍的量进入反应器。 在反应器的所有位置保持超过其他反应对象环氧乙烷的二氧化碳剩余量。 将流出的反应混合物的80〜98重量％返回到反应器的入口，其余部分通过蒸馏处理得到乙二醇碳酸酯。 作为绝热温度条件的结果，在反应产物中产生的显热用于后处理。
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