Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Braskem America Inc
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Individual
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Publication date
Priority claimed from US08/459,863external-prioritypatent/US5567838A/en
Application filed by IndividualfiledCriticalIndividual
Publication of CA2202546A1publicationCriticalpatent/CA2202546A1/en
Application grantedgrantedCritical
Publication of CA2202546CpublicationCriticalpatent/CA2202546C/en
The present invention relates to a new method of making the dimethacrylate ester of alkoxylated bisphenol-A via transesterification with methyl methacrylate. This transesterification reaction proceeds at low temperatures and is driven by the removal of methanol as a methanol/saturated hydrocarbon azeotrope. The lower temperature reaction advantageously inhibits polymerization of the feed ester. The reaction is catalyzed by potassium based catalysts.
CA 22025461995-06-021996-05-17Transesterification reaction of alkoxylated bisphenol-a and methyl methacrylate
Expired - Fee RelatedCA2202546C
(en)