Process for making monohydroxy-terminated phosphate compositions
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United States of America Patent
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Mar 17, 1998
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N/A
app pub date -
Oct 31, 1996
filing date -
Oct 31, 1996
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Expired
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Abstract
The present invention is a process for forming monohydroxy-terminated aromatic oligomeric phosphates by the reaction of a diaryl halophosphate, such as diphenyl chlorophosphate, optionally in the presence of some monoaryl dihalophosphate, with an aromatic diol, such as resorcinol, to form the monohydroxy-terminated aromatic oligomeric phosphate. The reaction preferably employs a Lewis acid catalyst, such as magnesium dichloride.
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