Macromonomer preparation
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Jun 12, 1996
filing date -
Dec 29, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the preparation of macromonomers by reaction between a lactone and a hydroxyalkylacrylate in the presence of >200 ppm phosphoric acid catalyst is provided. The reaction takes place in the presence of a free radical inhibitor at a temperature of from 100.degree. to 130.degree. C. Preferably, the lactone is .epsilon.-caprolactone and the hydroxyalkylacrylate is selected from the group consisting of 2-hydroxyethylacrylate and 2-hydroxyethylmethacrylate.
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