Process for the preparation of polyphosphates of organic bases
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United States of America Patent
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Feb 22, 2011
Grant Date -
Apr 3, 2008
app pub date -
Dec 7, 2007
filing date -
Sep 13, 2001
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Expired
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Abstract
A simple and economical process for the preparation of polyphosphates of organic bases consists of reacting a mixture of phosphorus pentoxide and at least one organic nitrogen base with at least one compound which releases water accompanied by decomposition under the prevailing conditions in such a molar ratio that upon decomposition of the water-releasing compound at most essentially 2 mol. water are produced per mol. phosphorus pentoxide. Thus-prepared polyphosphates are particularly suitable as flame-protection agents for plastics.
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