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公开(公告)号:US20050148803A1
公开(公告)日:2005-07-07
申请号:US10505705
申请日:2003-02-28
申请人: Werner Peschel , Till Adrian , Harald Rust , Arnd Bottcher , Thomas Hill , Ulrich Muller , Rainer Papp
发明人: Werner Peschel , Till Adrian , Harald Rust , Arnd Bottcher , Thomas Hill , Ulrich Muller , Rainer Papp
CPC分类号: C07C29/04 , C07C2601/14 , C07C35/08
摘要: A process for preparing cyclohexanol from benzene by a) preparing cyclohexene by hydrogenating benzene in the presence of a catalyst and b) preparing cyclohexanol by hydrating the cyclohexene in the presence of a catalyst, comprises carrying out steps a) and b) in a reaction facility which has a bottom region at the lower end, a top region at the upper end and a reaction zone between the top region and the bottom region which contains the catalyst according to steps a) and b), evaporating a portion of the benzene using the heat of reaction in the reaction zone, condensing it in the top region and returning it to the reaction zone, and withdrawing a reaction mixture containing cyclohexanol in the bottom region.
摘要翻译: 一种由苯制备环己醇的方法,通过以下步骤a)通过在催化剂存在下氢化苯来制备环己烯,和b)通过在催化剂存在下使环己烯水合制备环己醇,包括在反应设备中进行步骤a)和b) 其具有下端的底部区域,上端的顶部区域和顶部区域和底部区域之间的反应区域,其包含根据步骤a)和b)的催化剂,使用该方法蒸发一部分苯 反应区中的反应热,将其冷凝在顶部区域并将其返回到反应区,并且在底部区域中取出含有环己醇的反应混合物。
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公开(公告)号:US06943274B2
公开(公告)日:2005-09-13
申请号:US10505705
申请日:2003-02-28
申请人: Werner Peschel , Till Adrian , Harald Rust , Arnd Böttcher , Thomas Hill , Ulrich Müller , Rainer Papp
发明人: Werner Peschel , Till Adrian , Harald Rust , Arnd Böttcher , Thomas Hill , Ulrich Müller , Rainer Papp
CPC分类号: C07C29/04 , C07C2601/14 , C07C35/08
摘要: A process for preparing cyclohexanol from benzene by: a) preparing cyclohexene by hydrogenating benzene in the presence of a catalyst, and b) preparing cyclohexanol by hydrating the cyclohexene in the presence of a catalyst, comprises: carrying out steps a) and b) in a reaction facility which has a bottom region at the lower end, a top region at the upper end, and a reaction zone between the top region and the bottom region which contains the catalyst according to steps a) and b), evaporating a portion of the benzene using the heat of reaction in the reaction zone, condensing it in the top region and returning it to the reaction zone, and withdrawing a reaction mixture containing cyclohexanol in the bottom region.
摘要翻译: 一种通过以下步骤由苯制备环己醇的方法:a)在催化剂存在下,通过氢化苯来制备环己烯,和b)通过在催化剂存在下使环己烯水合制备环己醇,包括:进行步骤a)和b) 具有下端的底部区域,上端的顶部区域和顶部区域和底部区域之间的反应区域的反应设备,其包含根据步骤a)和b)的催化剂,蒸发一部分 苯在反应区中使用反应热,在顶部区域冷凝并将其返回到反应区,并在底部区域中抽出含有环己醇的反应混合物。
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公开(公告)号:US10131760B2
公开(公告)日:2018-11-20
申请号:US15623599
申请日:2017-06-15
申请人: Harald Rust
发明人: Harald Rust
IPC分类号: B29B17/00 , C08J11/12 , B29B17/04 , B29C47/00 , B29C47/60 , C08J11/04 , B29K21/00 , B29C47/10 , B29C47/42 , B29K105/26 , B29K105/24
摘要: A method of devulcanizing crosslinked rubber uses a planetary roller extruder with a central spindle, planetary spindles, a housing, and a feed part. The method includes feeding vulcanized rubber through the feed part into the housing, rotating the central spindle about its rotational axis and thereby causing the planetary spindles to rotate about their rotational axes and revolve about the central spindle. This generates mechanical and thermal stress on the vulcanized rubber by kneading and/or crushing of the vulcanized rubber, breaking or destroying the molecular chains or bonds of the vulcanized rubber. The method further includes at least one of (A) adding particles of the vulcanized rubber eccentrically to the center of the planetary roller extruder module between the planetary spindles and (B) mechanically pressing particles of the vulcanized rubber between the planetary spindles with a crammer feeder.
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公开(公告)号:US20080296145A1
公开(公告)日:2008-12-04
申请号:US12089304
申请日:2006-10-06
IPC分类号: C07C49/413
CPC分类号: C07C45/62 , C07C45/33 , C07C45/34 , C07C45/58 , C07C45/78 , C07C45/81 , C07C45/82 , C07C49/413 , C07C49/607
摘要: The present invention relates to a process for purifying a composition (I) at least comprising cyclododecanone. The process according to the invention for purifying a composition (I) at least comprising cyclododecanone comprises at least step (i) (i) irradiation of the composition (I).
摘要翻译: 本发明涉及一种纯化至少包含环十二烷酮的组合物(I)的方法。 根据本发明的用于纯化至少包含环十二烷酮的组合物(I)的方法包括至少步骤(i)(i)组合物(I)的照射。
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公开(公告)号:US07038058B2
公开(公告)日:2006-05-02
申请号:US10726183
申请日:2003-12-03
申请人: Harald Rust , Kirsten Burkart , Tillmann Faust , Jochem Henkelmann , Alois Kindler , Christian Knoll , Andre Mohry
发明人: Harald Rust , Kirsten Burkart , Tillmann Faust , Jochem Henkelmann , Alois Kindler , Christian Knoll , Andre Mohry
IPC分类号: C07D263/30
CPC分类号: B01D3/141 , C07D263/42
摘要: The present invention relates to a process for continuously preparing 5-alkoxy-substituted oxazoles, in particular for continuously preparing 4-methyl-5-alkoxy-substituted oxazoles and also a process for preparing pyridoxine derivatives.
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公开(公告)号:US06727395B1
公开(公告)日:2004-04-27
申请号:US10018338
申请日:2001-12-19
申请人: Frank Stein , Thomas Krug , Thomas Nöbel , Harald Rust
发明人: Frank Stein , Thomas Krug , Thomas Nöbel , Harald Rust
IPC分类号: C07C2700
CPC分类号: C07C29/149 , C07C31/20
摘要: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprises a) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid, b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid, c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters, d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step, e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols, f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols and g) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.
摘要翻译: 从包含己二酸,6-羟基己酸和少量1,4-环己二醇的羧酸混合物制备1,6-己二醇的方法,其在水提取后在环己烷氧化成环己酮/环己醇时作为副产物获得 的反应混合物,然后用氢氧化钠水溶液萃取,通过酸的酯化和氢化反应,包括a)通过加入无机酸从碱性提取物中释放出羧酸,b)将包含羧酸的有机相分馏得到馏出物 包括低分子量单羧酸和包含己二酸和6-羟基己酸的残基,c)使一元羧酸与二羧酸混合物中存在的二羧酸与低分子量醇反应,得到相应的羧酸酯,d)释放 在第一馏出物中获得过量酒精和低锅炉的酯化混合物 e步骤,e)在第二蒸馏步骤中分馏底部产物,得到基本上不含1,4-环己烷二醇的酯馏分和至少包含大部分1,4-环己烷二醇的馏分,f)催化氢化酯 基本上不含1,4-环己烷二醇的馏分,和g)在最终蒸馏步骤中以本身已知的方式从氢化产物中分离出1,6-己二醇。
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公开(公告)号:US5981769A
公开(公告)日:1999-11-09
申请号:US125974
申请日:1998-08-28
申请人: Karl Gerhard Baur , Rolf Fischer , Rolf Pinkos , Frank Stein , Boris Breitscheidel , Harald Rust
发明人: Karl Gerhard Baur , Rolf Fischer , Rolf Pinkos , Frank Stein , Boris Breitscheidel , Harald Rust
IPC分类号: C07D313/04 , C07C27/12 , C07C29/149 , C07C29/80 , C07C29/88 , C07C31/20 , C07C31/27 , C07C51/31 , C07D315/00 , C07D313/00
CPC分类号: C07D315/00 , C07C29/149 , C07C29/80 , C07C29/88 , C07C51/313 , C07C2101/14
摘要: 1,6-hexanediol and .epsilon.-caprolactone are prepared from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol using oxygen or oxygen-containing gases by water extraction of the reaction mixture, by esterifying and hydrogenating a substream to give hexanediol and cyclizing 6-hydroxycaproic esters to give caprolactone.
摘要翻译: PCT No.PCT / EP97 / 00990 371日期1998年8月28日 102(e)1998年8月28日PCT PCT 1997年2月28日PCT公布。 公开号WO97 / 31883 日期1991年9月4日,1991年6月 - 己二醇和ε-己内酯由包含己二酸,6-羟基己酸和少量1,4-环己二醇的羧酸混合物制备,其作为副产物在氧化 使用氧或含氧气体通过水提取反应混合物,通过酯化和氢化子流,得到己二醇并环化6-羟基己酸酯,得到己内酯,得到环己烷至环己酮/环己醇。
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公开(公告)号:US5670639A
公开(公告)日:1997-09-23
申请号:US614682
申请日:1996-03-13
申请人: Martin Schmidt-Radde , Marc Heider , Albrecht Dams , Harald Rust
发明人: Martin Schmidt-Radde , Marc Heider , Albrecht Dams , Harald Rust
IPC分类号: C07D207/26 , C07D207/267 , C07D211/76 , C07D223/10
CPC分类号: C07D207/267 , C07D211/76 , C07D223/10
摘要: N-Vinyllactams of the general formula I ##STR1## where n is from 1 to 3, are prepared by a process which comprises reaction of a lactam of the general formula II ##STR2## where n is from 1 to 3, with from 10 to 90 percent by weight of an aqueous alkali metal hydroxide solution with distillation at from 50.degree. to 250.degree. C. and from 1 to 100 mbar and with a residence time of from 0.1 to 5 hours and subsequent reaction with acetylene at from 60.degree. to 250.degree. C. and from 1 to 100 bar.
摘要翻译: 通过包括将通式II的内酰胺(II)的反应的方法制备,其中n为1至3的通式I(I)的N-乙烯基内酰胺,其中n为1至3,其中n为1至 3,以10至90重量%的碱金属氢氧化物水溶液在50至250℃和1至100毫巴蒸馏下进行,停留时间为0.1至5小时,随后与乙炔反应 在60℃至250℃和1至100巴之间。
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公开(公告)号:US5414097A
公开(公告)日:1995-05-09
申请号:US185179
申请日:1994-01-24
IPC分类号: C07D309/08
CPC分类号: C07D309/08
摘要: A process for purifying esters of tetrahydropyran-4-carboxylic acid of the formula I ##STR1## where R.sup.1 to R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, and R.sup.2 and R.sup.3 are each additionally hydrogen, from mixtures produced in the reaction of butyrolactones of the formula II ##STR2## where R.sup.2 and R.sup.3 have the abovementioned meanings, and R.sup.4 is hydrogen, alkyl of 1-6 carbons or acyl of the formula --CO--R.sup.2, with alcohols of the formula R.sup.1 OH in the presence of oxide catalysts, by distillation, which entailsa) removing overhead, in a first column with 5-25 theoretical plates with a distillate pressure of 700-1100 mbar and a distillate temperature of 50.degree.-80.degree. C., an alcohol and up to 10% of the water,b) transferring the bottom product from the first column into a second column with 18-40 theoretical plates, into which a water entrainer is metered between plates 15 and 30, and is circulated, and which operates with a distillate pressure of 35-350 mbar and a distillate temperature of 18.degree.-70.degree. C., with the esters of tetrahydropyran-4-carboxylic acid being removed between plates 8 and 18 at 90.degree.-150.degree. C., and, where appropriate,c) feeding the bottom product from the second column into a third column with 5-25 theoretical plates, and returning the overhead products at a distillate pressure of 1-100 mbar and a distillate temperature of 90.degree.-140.degree. C. to the synthesis of the esters of tetrahydropyran-4-carboxylic acid.
摘要翻译: 用于纯化式I的四氢吡喃-4-羧酸的酯的方法,其中R 1至R 3各自为C 1 -C 4 - 烷基,R 2和R 3各自为氢, 其中R 2和R 3具有上述含义,R 4是氢,1-6个碳的烷基或式-CO-R 2的酰基,其中式R 1 OH的醇在存在下 氧化物催化剂,通过蒸馏,其需要a)在具有5-25理论塔板的第一塔中,馏出物压力为700-1100毫巴,馏出物温度为50-80℃,醇和升高 至10%的水,b)将底部产物从第一塔转移到具有18-40理论塔板的第二塔中,其中在15和30之间计量水夹带剂,并循环,并且其以 馏出液压力为35-350毫巴,馏出物温度为18-70℃, 其中四氢吡喃-4-羧酸的酯在90℃-150℃下在板8和18之间除去,并且在适当的情况下,c)将底部产物从第二塔进料到具有5-25理论值的第三塔 将塔顶馏出物返回到馏出物压力为1-100毫巴,馏出液温度为90-140℃,以合成四氢吡喃-4-羧酸酯。
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公开(公告)号:US10654210B2
公开(公告)日:2020-05-19
申请号:US15935206
申请日:2018-03-26
申请人: Harald Rust
发明人: Harald Rust
IPC分类号: B29C48/44 , B29C48/425 , B29C48/435 , B29C48/505 , B29C48/585 , B29C48/68 , B29C48/685 , B29C48/80 , B29B7/48 , B29C48/395 , B29C48/25 , B29C48/625
摘要: A planetary roller extruder includes a housing with an internal housing toothing. A central spindle is disposed in the housing and has an external central spindle toothing. A plurality of planetary spindles are disposed about the central spindle and in the housing. Each of the planetary spindles has an external planetary spindle toothing configured to mesh with the internal housing toothing and the external central spindle toothing. A drive is configured to rotate the central spindle. The drive includes a drive journal connected to the central spindle to permit transmission of a driving force from the drive to the central spindle. The drive journal includes a bore. The bore has internal projections configured to engage with the external central spindle toothing to secure the central spindle to the drive journal by a screw-type connection.
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