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    • 3. 发明授权
    • Method for producing N-phosphonomethylglycine
    • N-膦酰基甲基甘氨酸的制备方法
    • US07071354B2
    • 2006-07-04
    • US10481565
    • 2002-06-21
    • Hugues VandenmerschHartwig VossStefan OrstenChristian Wulff
    • Hugues VandenmerschHartwig VossStefan OrstenChristian Wulff
    • C07F9/22C07F9/28
    • C07F9/3813
    • The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where (a) the pH of the mixture is adjusted to a value in the range from 2 to 8, (b) a separation of the mixture on a selective nanofiltration membrane is performed, a retentate which is richer in N-phosphonomethylglycine and poorer in halides and a permeate which is richer in halides and poorer in N-phosphonomethylglycine being obtained, and (c) the N-phosphonomethylglycine is recovered from the retentate. The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.
    • 本发明涉及从含有N-膦酰基甲基甘氨酸,卤化铵和碱金属或碱土金属卤化物和任选的溶解形式的有机杂质的含水混合物中回收N-膦酰基甲基甘氨酸的方法,其中(a) 将混合物调节至2至8范围内的值,(b)进行选择性纳滤膜上的混合物分离,更富含N-膦酰基甲基甘氨酸并且较差的卤化物的渗余物和富含物的渗透物 在得到的N-膦酰基甲基甘氨酸的卤化物和较差的碱中,和(c)从渗余物中回收N-膦酰基甲基甘氨酸。 根据本发明的方法使得可以同时分离卤化物盐来回收N-膦酰基甲基甘氨酸。
    • 4. 发明申请
    • PROCESS FOR ISOLATING TETRAHYDROFURAN
    • 分离四氢呋喃的方法
    • US20120073953A1
    • 2012-03-29
    • US13235427
    • 2011-09-18
    • Maria GUIXA GUARDIARolf PinkosNadja PollmerWolf-Steffen WeisskerHugues Vandenmersch
    • Maria GUIXA GUARDIARolf PinkosNadja PollmerWolf-Steffen WeisskerHugues Vandenmersch
    • B01D3/36
    • B01D3/143B01D3/36C07D307/36
    • A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).
    • 通过以下步骤分离四氢呋喃与四氢呋喃,烷醇和高沸点物流的方法:(a)在第一蒸馏阶段中分离第一流的四氢呋喃和链烷醇作为共沸物; (b)将第一流的一部分进料到用于酯化马来酸酐的反应器中,得到第二股四氢呋喃和马来酸单烷基酯; (c)在第二蒸馏阶段将第二物流分离成马来酸单烷基酯和第四四氢呋喃流; (d)将来自第二蒸馏阶段的第四个四氢呋喃流和来自(a)的未进料到反应器的第一个物流部分进入第三个蒸馏阶段以获得四氢呋喃的产物流和第六个四氢呋喃流 和链烷醇; (e)将第六流从第三蒸馏段再循环到第一蒸馏阶段或(b)中的反应器中。
    • 5. 发明授权
    • Process for isolating tetrahydrofuran
    • 四氢呋喃分离方法
    • US09186599B2
    • 2015-11-17
    • US13235427
    • 2011-09-18
    • Maria Guixa GuardiaRolf PinkosNadja PollmerWolf-Steffen WeisskerHugues Vandenmersch
    • Maria Guixa GuardiaRolf PinkosNadja PollmerWolf-Steffen WeisskerHugues Vandenmersch
    • C07D307/00B01D3/14B01D3/36C07D307/36
    • B01D3/143B01D3/36C07D307/36
    • A process which isolates tetrahydrofuran from a stream of tetrahydrofuran, alkanol and high boilers, by: (a) separating off a first stream of tetrahydrofuran and alkanol as azeotrope in a first distillation stage; (b) feeding part of the first stream into a reactor for esterifying maleic anhydride, giving a second stream of tetrahydrofuran and monoalkyl maleate; (c) separating the second stream into a third stream of monoalkyl maleate and a fourth stream of tetrahydrofuran in a second distillation stage; (d) feeding the fourth stream of tetrahydrofuran from the second distillation stage and the part of the first stream from (a) which is not fed to the reactor into a third distillation stage to obtain a product stream of tetrahydrofuran and a sixth stream of tetrahydrofuran and alkanol; (e) recirculating the sixth stream from the third distillation stage into the first distillation stage or the reactor in (b).
    • 通过以下步骤分离四氢呋喃与四氢呋喃,烷醇和高沸点物流的方法:(a)在第一蒸馏阶段中分离第一流的四氢呋喃和链烷醇作为共沸物; (b)将第一流的一部分进料到用于酯化马来酸酐的反应器中,得到第二股四氢呋喃和马来酸单烷基酯; (c)在第二蒸馏阶段将第二物流分离成马来酸单烷基酯和第四四氢呋喃流; (d)将来自第二蒸馏阶段的第四个四氢呋喃流和来自(a)的未进料到反应器中的第一个物流部分进入第三个蒸馏阶段以获得四氢呋喃的产物流和第六个四氢呋喃流 和链烷醇; (e)将第六流从第三蒸馏段再循环到第一蒸馏阶段或(b)中的反应器中。
    • 6. 发明申请
    • Continuous Method for Producing Cyclohexyl(Meth)Acrylate
    • 连续生产环己基(甲基)丙烯酸酯的方法
    • US20080146831A1
    • 2008-06-19
    • US11814148
    • 2006-02-10
    • Hugues VandenmerschMattias GeisendorferHorst Hofmann
    • Hugues VandenmerschMattias GeisendorferHorst Hofmann
    • C07C69/76
    • C07C67/08C07C67/54C07C67/62C07C2601/14C07C69/54
    • A continuous process is proposed for preparing cyclohexyl (meth)acrylate by acid-catalyzed esterification of cyclohexanol with glacial (meth)acrylic acid in the presence of an azeotroping agent for the water of esterification and of a polymerization inhibitor, comprising the following process steps: esterification of the (meth)acrylic acid (1) with cyclohexanol (2) in the presence of the acidic catalyst (3), of the polymerization inhibitor (4) and of the azeotroping agent for the water of esterification (5) in a reaction zone (A), in which the water of esterification is removed as an azeotrope with the azeotroping agent in a distillation zone attached to the reaction zone (A) to obtain a reaction effluent (process stage A) which is fed to a neutralization in which the acidic catalyst (3) and unconverted (meth)acrylic acid (1) from the reaction effluent from the esterification are neutralized by means of an alkaline solution to obtain crude cyclohexyl (meth)acrylate (process stage B); washing of the crude cyclohexyl (meth)acrylate from process stage (B), in which residues of salts are removed from the crude cyclohexyl (meth)acrylate (process stage C), and subsequent distillative workup of the crude cyclohexyl (meth)acrylate (process stages D to G).
    • 提出了在酯化水共聚剂和阻聚剂共沸剂存在下​​,通过环己醇与冰川(甲基)丙烯酸的酸催化酯化制备环己基(甲基)丙烯酸酯的连续方法,包括以下步骤: 在酸性催化剂(3),聚合抑制剂(4)和酯化水共沸剂(5)的反应中,(甲基)丙烯酸(1)与环己醇(2)的酯化反应 区域(A),其中在与反应区(A)连接的蒸馏区中与共沸剂作为共沸物除去酯化水,得到反应流出物(处理阶段A),其进料到中和,其中 来自酯化反应流出物的酸性催化剂(3)和未转化的(甲基)丙烯酸(1)通过碱溶液中和,得到粗制环己基(甲基)丙烯酸酯(工艺阶段B); 从粗制环己基(甲基)丙烯酸酯(工艺阶段C)除去盐的残留物的方法阶段(B)中洗涤粗制环己基(甲基)丙烯酸酯,随后进行粗制环己基(甲基)丙烯酸酯 处理阶段D至G)。