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21. 发明申请

US20050288471A1 Method for producing oligomers derived from butenes 审中-公开
标题翻译：生产由丁烯衍生的低聚物的方法
公开(公告)号：US20050288471A1
公开(公告)日：2005-12-29
申请号：US10533082
申请日：2003-10-28
申请人： Stefan Bitterlich , Hartwig Voss , Gunter Schuch , Thomas Heidemann
发明人： Stefan Bitterlich , Hartwig Voss , Gunter Schuch , Thomas Heidemann
IPC分类号： C07C2/24 , C07C7/13 , C08F10/00 , C08F110/10 , C08F210/10
CPC分类号： C07C2/24 , C07C7/13 , C07C2523/755 , C07C11/08
摘要： The present invention relates to a process for preparing oligomers consisting mainly of repeating units derived from 1- or 2-butene from a hydrocarbon stream consisting substantially of branched and linear hydrocarbon compounds having 4 carbon atoms, and comprising olefinic branched and linear hydrocarbon compounds having 4 carbon atoms (C4 starting stream) by a. in step a), separating the C4 starting stream into a fraction consisting mainly of linear hydrocarbon compounds having 4 carbon atoms (l-C4 fraction) and a fraction consisting mainly of branched hydrocarbon compounds having 4 carbon atoms (b-C4 fraction), by contacting the C4 starting stream with a membrane which is easier to pass for linear hydrocarbon compounds having 4 carbon atoms than for branched hydrocarbon compounds having 4 carbon atoms, b. in step b), optionally after removing butanes, oligomerizing the olefinic hydrocarbon compounds having 4 carbon atoms present in the l-C4 fraction, c. in step c), subjecting the olefinic hydrocarbon compounds having 4 carbon atoms present in the b-C4 fraction to one of the following steps: c1. reaction with methanol to give methyl tert-butyl ether (step c1) c2. hydroformylation to give substantially isovaleraldehyde (step c2) c3. polymerization to polyisobutylene (step c3) c4. dimerization to 2,4,4-trimethyl-1-pentene (step c4) c5. alkylation, substantially to form saturated hydrocarbon compounds having 8 or 9 carbon atoms (step c5).
摘要翻译：本发明涉及一种制备低聚物的方法，所述低聚物主要由来自1-或2-丁烯的重复单元组成，所述烃流基本上由具有4个碳原子的支链和直链烃化合物组成的烃料流，并且包含具有4个碳原子的烯烃支链和直链烃化合物碳原子（C 4 H 3起始物流）。在步骤a）中，将C 4 S起始物流分离成主要由具有4个碳原子的直链烃化合物（1 C 4 H 3馏分）组成的馏分和主要由支链通过使C 4-14原料流与容易通过具有4个碳原子的直链烃化合物的膜接触，使具有4个碳原子的烃化合物（bC 4 H 4）对于具有4个碳原子的支链烃化合物，b。在步骤b）中，任选地在除去丁烷之后，使存在于1-C 4 H 4馏分中的具有4个碳原子的烯烃化合物低聚，c。在步骤c）中，将存在于b-C 4 S 4馏分中的具有4个碳原子的烯烃化合物进行以下步骤之一：c1。与甲醇反应，得到甲基叔丁基醚（步骤c1）c2。加氢甲酰化得到基本上异戊醛（步骤c2）c3。聚合到聚异丁烯（步骤c3）c4。二聚成2,4,4-三甲基-1-戊烯（步骤c4）c5。烷基化，基本上形成具有8或9个碳原子的饱和烃化合物（步骤c5）。

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