Transesterification reaction of alkoxylated bisphenol-a and methyl methacrylate
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United States of America Patent
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Oct 22, 1996
Grant Date -
N/A
app pub date -
Jun 2, 1995
filing date -
Jun 2, 1995
priority date (Note) -
Expired
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Abstract
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 polyerization of the feed ester. The reaction is catalyzed by potassium based catalysts.
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