Invention Grant
- Patent Title: Process for preparing urethane-containing (meth)acrylic esters
- Patent Title (中): 制备含氨基甲酸酯(甲基)丙烯酸酯的方法
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Application No.: US12776670Application Date: 2010-05-10
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Publication No.: US08399225B2Publication Date: 2013-03-19
- Inventor: Rainer Stürmer , Dejana Drew , Bernhard Hauer , Jürgen Däuwel , Uwe Meisenburg
- Applicant: Rainer Stürmer , Dejana Drew , Bernhard Hauer , Jürgen Däuwel , Uwe Meisenburg
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102009003035 20090512
- Main IPC: C12P7/60
- IPC: C12P7/60

Abstract:
The invention relates to a process for preparing urethane-containing acrylic- and (meth)acrylic esters by reacting a urethane-containing alcohol with a reactant acrylic- or (meth)acrylic ester of a saturated alcohol in the presence of at least one polymerization inhibitor and an enzyme as a catalyst within a reactor, wherein the saturated alcohol released in the process and optionally an entraining agent form an azeotrope with an excess of the reactant (meth)acrylic ester, such that the azeotrope is removed by distillation under reduced pressure and at least one substream from the bottom of the reactor is circulated through the top of the distillation column. Using this process, urethane-containing acrylic- and (meth)acrylic esters are prepared in high yields and high purities under mild conditions from economically obtainable reactants with no significant polymer formation.
Public/Granted literature
- US20100291640A1 PROCESS FOR PREPARING URETHANE-CONTAINING (METH)ACRYLIC ESTERS Public/Granted day:2010-11-18
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