| 摘要 |
<p>An ester interchange process, preferably for the formation of vinyl higher esters from methyl acrylate or methacrylate, is conducted in the presence of a novel alcoholate of the formula</p><p><Chemistry id="chema01" num="0001"><Image id="ia01" he="5" wi="82" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry><UnorderedLists id="ula01" listStyle="none"><ListItem>wherein M' is selected from Mg, Ca and Ba</ListItem><ListItem>M<Sup>2</Sup> is selected from Ti, Zr and A1</ListItem><ListItem>n is 3 or 4 and is the valency of M<Sup>2</Sup></ListItem><ListItem>a is a number from 0 to 1.5</ListItem><ListItem>b is a number from 0 to 0.75n</ListItem><ListItem>x+y = 1 and each is a number from 0.005 to 0.995 and is such that the compound is liquid at 30°C</ListItem><ListItem>R<Sup>4</Sup> is selected from alkyl having at least 4 carbon atoms, cycloalkyl having at least 4 carbon atoms and aminoalkyl, and</ListItem><ListItem>each group R<Sup>6</Sup> is individually selected from C, <Sub>3 </Sub>alkoxy and blocking groups that are substantially less reactive in the ester interchange reaction than the groups OR<Sup>4</Sup>.</ListItem></UnorderedLists></p> |
