Process for the preparation of polyphosphonic acid amides

Details Process for the preparation of polyphosphonic acid amides Process for the preparation of polyphosphonic acid amides

1985-12-10

1987-10-20

Sutto, Anton H.

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

Organic compounds

Amino nitrogen containing

528398, 544337, C07F 944, C07F 965

Patent

active

047015543

ABSTRACT:
The invention relates to a process for the preparation of polyphosphonic acid amides by condensation of 0.5-2 moles of a phosphonic acid diaryl ester and 1 mole of an aliphatic, aromatic, araliphatic or heterocyclic primary or secondary diamine in the melt at 50.degree.-350.degree. C., if appropriate in the presence of a catalyst which accelerates the condensation and under an inert gas atmosphere, the corresponding phenol being split off.

REFERENCES:
patent: 3253063 (1966-05-01), Nielsen
patent: 3377409 (1968-04-01), McConnell et al.
patent: 3450677 (1969-06-01), McConnell et al.
patent: 4152373 (1979-05-01), Honig et al.
patent: 4403075 (1983-09-01), Byrd et al.

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