发明授权
US07521578B2 Process for the preparation of (meth)acrylates of tetra- or polyhydric alcohols
失效
制备四元醇或多元醇的(甲基)丙烯酸酯的方法
- 专利标题: Process for the preparation of (meth)acrylates of tetra- or polyhydric alcohols
- 专利标题(中): 制备四元醇或多元醇的(甲基)丙烯酸酯的方法
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申请号: US11995406申请日: 2006-08-16
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公开(公告)号: US07521578B2公开(公告)日: 2009-04-21
- 发明人: Bardo Schmitt , Joachim Knebel , Guenther Graeff
- 申请人: Bardo Schmitt , Joachim Knebel , Guenther Graeff
- 申请人地址: DE Darmstadt
- 专利权人: Evonik Roehm GmbH
- 当前专利权人: Evonik Roehm GmbH
- 当前专利权人地址: DE Darmstadt
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: DE102005044250 20050915
- 国际申请: PCT/EP2006/065366 WO 20060816
- 国际公布: WO2007/031384 WO 20070322
- 主分类号: C07C67/30
- IPC分类号: C07C67/30
摘要:
Process for the preparation of acrylic and methacrylic acid esters by transesterification of (meth)acrylic acid esters of the formula I: where R1 is H or CH3 and R2 is an alkyl radical having 1 to 40 carbon atoms, with alkanols which have four or more esterifiable hydroxyl groups, characterized in that 0.01 to 10% by weight, based on the total reaction mixture, of lithium amide catalysts are used as transesterification catalyst.
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