Tris-organophosphite compositions having improved hydrolytic stability.

摘要

Tris-organophosphite compositions are provided having an improved hydrolytic stability, comprising (1) a tris-organophosphite of the formula:
<Chemistry id="chema01" num="0001"><Image id="ia01" he="11" wi="84" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein:
<UnorderedLists id="ula01" listStyle="none"><ListItem>R<Sub>1</Sub>, R<Sub>2</Sub> and R<Sub>3</Sub> are selected from the group consisting of alkyl, alkenyl, aryl, alkylaryl and aralkyl groups together aggregating at least fourteen carbon atoms up to about sixty carbon atoms; and</ListItem><ListItem>(2) a long-chain aliphatic amine in an amount to improve the hydrolytic stability of the phosphite and having the formula:
<Chemistry id="chema02" num="0002"><Image id="ia02" he="15" wi="85" file="IMGA0002.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein:</ListItem><ListItem>R<Sub>4</Sub>, R<Sub>5</Sub> and R<Sub>e</Sub> are selected from the group consisting of hydrogen; aliphatic (including alkyl and alkenyl) groups having from one to about thirty-six carbon atoms; and hydroxyalkyl having from two to about six carbon atoms; one of R<Sub>4</Sub>, R<Sub>5</Sub> and R<Sub>6</Sub> is an aliphatic group having at least ten carbon atoms, and the remaining of R<Sub>4</Sub>, R<Sub>5</Sub> and R<Sub>6</Sub> are selected from hydrogen, alkyl having from one to four carbon atoms and hydroxyalkyl; and preferably at least one of R<Sub>4</Sub>, R<Sub>5</Sub> and R<Sub>6</Sub> is hydroxyalkyl.</ListItem></UnorderedLists>