发明公开
EP1204472A1 VERFAHREN ZUM HERSTELLEN VON ESTERN AUS UNGESÄTTIGTEN CARBONSÄUREN UND MEHRWERTIGEN ALKOHOLEN
有权
METHOD FOR PRODUCING的不饱和羧酸和多元醇的酯
- 专利标题: VERFAHREN ZUM HERSTELLEN VON ESTERN AUS UNGESÄTTIGTEN CARBONSÄUREN UND MEHRWERTIGEN ALKOHOLEN
- 专利标题(英): Method for producing esters from unsaturated carboxylic acids and polyhydric alcohols
- 专利标题(中): METHOD FOR PRODUCING的不饱和羧酸和多元醇的酯
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申请号: EP00958367.5申请日: 2000-08-03
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公开(公告)号: EP1204472A1公开(公告)日: 2002-05-15
- 发明人: FIES, Matthias , STALBERG, Theo , RÖSSLER, Harald , GUTSCHE, Bernhard
- 申请人: Cognis Deutschland GmbH & Co. KG
- 申请人地址: Henkelstrasse 67 40589 Düsseldorf DE
- 专利权人: Cognis Deutschland GmbH & Co. KG
- 当前专利权人: Cognis Deutschland GmbH & Co. KG
- 当前专利权人地址: Henkelstrasse 67 40589 Düsseldorf DE
- 优先权: DE19937911 19990811
- 国际公布: WO0112315 20010222
- 主分类号: B01J19/18
- IPC分类号: B01J19/18 ; B01J19/26 ; B01J14/00 ; C07C67/08 ; C07C69/54
摘要:
The invention relates to a method for producing esters from unsaturated carboxylic acids with a higher boiling point than water, especially acrylic acid or methacrylic acid; and polyhydric alcohols in a reactor (2). The liquid reaction mixture (1) contains polymerisation inhibitors and the reaction water that is produced is at least partially separated in a vapour state. The method is characterised in that part of the gas-vapour phase of the reaction mixture (1) is removed from the reactor (2), said part of the gas-vapour phase is partially condensed in a dephlegmator (6), a liquid containing the polymerisation inhibitor is added to the rising gas/vapour mixture and to the off-running condensate from the head of the dephlegmator (6) and the complete off-running mixture is returned to the reactor (2).
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