Phosphorylation process and catalyst
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United States of America Patent
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Nov 12, 2002
Grant Date -
N/A
app pub date -
Oct 16, 2000
filing date -
Mar 18, 1996
priority date (Note) -
Expired
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Abstract
A process and use of at least one catalyst for phosphorylation, in particular phosphitylation, of hydroxyl groups, whereby a phosphorous compound is added to a hydroxyfunctional compound having at least one hydroxyl group. The addition yields a phosphorylated product having at least one O--P bond. The catalyst employed in the process is of the general formula (R.sup.1).sub.n X(R.sup.2).sub.4-n, wherein each R.sup.1 independently is hydrogen, at least one hydrocarbyl, amino, halogenated and/or silylated hydrocarbyl group, X is Si, Ge or Sn, each R.sup.2 independently is a leavening group and is F, Cl, Br, I or a sulphonate group optionally being halogen substituted and wherein n is 1, 2 or 3.
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