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    • 12. 发明申请
    • Method for the simultaneous production of tetrahydrofurans ad pyrrolidones
    • 同时生产四氢呋喃和吡咯烷酮的方法
    • US20050119494A1
    • 2005-06-02
    • US10505706
    • 2003-02-28
    • Rolf-Hartmuth FischerMarkus RoschNils BottkeAlexander WeckGunther WindeckerMichael HesseHolger BorchertStephan Schlitter
    • Rolf-Hartmuth FischerMarkus RoschNils BottkeAlexander WeckGunther WindeckerMichael HesseHolger BorchertStephan Schlitter
    • B01J23/72B01J23/80C07B61/00C07D207/26C07D207/267C07D307/08C07D307/02
    • C07D207/267C07D307/08
    • A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C4-dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones comprises a) hydrogenating C4-dicarboxylic acids and/or derivatives thereof in the gas phase at from 200 to 300° C., from 0.1 to 100 bar, catalyst hourly space velocities of from 0.01 to 1 kg of reactant/l of catalyst*hour and reactant/hydrogen molar ratios of from 20 to 800 in the presence of catalysts comprising copper, aluminum and/or zinc to give mixtures of THF and GBL, b) separating the hydrogenation effluent obtained by distillation into a THF/water mixture as the top product and a GBL-containing bottom product, c) separating the THF/water mixture from step b) in a distillation facility consisting of three columns by withdrawing water from the bottom of the first column, recycling water-containing THF from the second into the first column, passing a side stream of the first into the second column, recycling the bottom product of the third column into the first column and withdrawing a distillate at the top of the first column, wherein a side stream of the second column is passed into the third column and the pure THF is obtained as the top product of the third column, d) recovering GBL from the GBL-containing bottom product from step b) by distillation and e) reacting the GBL obtained with ammonia or amines to give corresponding pyrrolidones.
    • 在铜催化剂存在下,在气相中催化氢化C 4 - 二羧酸和/或其衍生物,共同生产烷基取代或未取代的THF和吡咯烷酮的方法,并使GBL与氨或伯胺 得到吡咯烷酮包括:a)在200-300℃,0.1-100巴的气相中氢化C 4-14 - 二羧酸和/或其衍生物,催化剂小时空速为0.01 在包含铜,铝和/或锌的催化剂存在下,至1kg反应物/ l催化剂*小时和反应物/氢摩尔比为20至800,得到THF和GBL的混合物,b)分离所得氢化流出物 通过蒸馏作为顶部产物的THF /水混合物和含有GBL的底部产物,c)通过从第一塔底部排出水分离由三塔组成的蒸馏设备中的步骤b)中的THF /水混合物 ,回收 将含水THF从第二塔进入第一塔,将第一塔的侧流通入第二塔,将第三塔的底部产物再循环到第一塔中并抽出第一塔顶部的馏出物,其中 将第二塔的侧流进入第三塔,得到纯THF作为第三塔的顶部产物,d)通过蒸馏从步骤b)的含GBL的底部产物中回收GBL,和e)使 用氨或胺得到GBL,得到相应的吡咯烷酮。
    • 20. 发明申请
    • Method For Producing Alkoxylated 2,5-Dihydrofuran But-2-Ene Derivatives Or Tetra-1,1,4,4-Alkoxylated But-2-Ene Derivatives
    • 生产烷氧基化2,5-二氢呋喃丁-2-烯衍生物或四 - 1,1,4,4-烷氧基化丁-2-烯衍生物的方法
    • US20080110763A1
    • 2008-05-15
    • US11908506
    • 2006-03-23
    • Ingo RichterHermann PutterUlrich GriesbachNils Bottke
    • Ingo RichterHermann PutterUlrich GriesbachNils Bottke
    • C25D3/62C07D307/02
    • C07D307/32C07D307/88C07D307/89C25B3/02
    • A process for the preparation of 2,5-dihydrofuran derivatives substituted in the 3- or 4-position, which in the 2- or in the 5-position or at both positions each carry a C1- to C6-alkoxy radical (DHF-alkoxy derivatives 1), or 1,1,4,4-tetraalkoxy-but-2-ene derivatives substituted in the 3- or 4-position, from 2-butene-1 ,4-diol derivatives of the general formula (I) in which the radicals R1 and R2 independently of one another are hydrogen, C1- to C6-alkyl, C6- to C12-aryl or C5- to C12-cycloalkylene orR1 and R2, together with the double bond to which they are bonded, form a C6- to C12-aryl radical or a mono- or polyunsaturated C5- to C12-cycloalkyl radical,orfrom their mixture with 2,5-dihydrofuran derivatives substituted in the 3- position or 4-position, which in the 2- or in the 5-position carry a C1- to C6-alkoxy radical, by electro-chemical oxidation in the presence of a C1- to C6-monoalkyl alcohol.
    • 制备在3-或4-位取代的2,5-二氢呋喃衍生物的方法,其中2-或5-位或两个位置各自携带C 1 - 至C 6 - 烷氧基(DHF-烷氧基衍生物1)或在3-或4-位取代的1,1,4,4-四烷氧基 - 丁-2-烯衍生物,2 其中基团R 1和R 2彼此独立的通式(I)的1-丁烯-1,4-二醇衍生物是氢,C 1 -C 6烷基, 1〜C 6 - 烷基,C 6 - 至C 12 - 芳基或C 5〜 > - > C 12 - 亚环烷基或R 1和R 2与它们所键合的双键一起形成C < C 6 -C 12 - C 12 - 芳基或单不饱和C 5〜C 12 - 环烷基 ,或它们与3-或4-位取代的2,5-二氢呋喃衍生物的混合物,其在2-或5-位上携带C 1 H 通过在C 1 -C 6 - C 6 - 单烷基醇存在下的电化学氧化反应生成C 6〜C 6 - 烷氧基 。