Process for the preparation of polyphosphates of organic bases

Details Process for the preparation of polyphosphates of organic bases Process for the preparation of polyphosphates of organic bases

2002-08-22

2008-03-18

Shiao, Rei-tsang (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C544S358000, C544S195000

Reexamination Certificate

active

07345168

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.

REFERENCES:
patent: 6114421 (2000-09-01), Malcangi

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