Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Florian Zschunke
Gerhard Kölbl
Belaid Ait Aissa
Rüdiger Carloff
Steffen Krill
Date of Patent
October 10, 2023
Patent Application Number
17814490
Date Filed
July 22, 2022
Patent Citations
Patent Primary Examiner
Patent abstract
A process can be used for producing optical molding materials on the basis of methyl methacrylate (MMA). The MMA produced by an optimized method and the molding materials feature in particular a very low yellowness index. This MMA has been produced by direct oxidative esterification of methacrolein. An optimized workup of the reactor output from the oxidative esterification of methacrolein can be used for removing particularly discoloring byproducts. This process moreover has the advantage that fewer demands are placed on plant apparatus configuration.
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