WAY OF PRODUCTION OF AMIDE NITRILOTRISMETHYLENEPHOSPHONIC ACID AMMONIUM SALT Russian patent published in 2012 - IPC C07F9/44

Abstract RU 2442788 C1

FIELD: chemistry.

SUBSTANCE: invention refers to the way of production of amide nitrilotrismethylenephosphonic acid ammonium salt used in creation of fire resistant composite materials based on thermoplasts with the formula: The method consists in the following: nitrilotrismethylenephosphonic acid is amidated at a high temperature under the influence of gas ammonia under some pressure until pH of the 1% solution of the obtained product makes up 6-6.5.

EFFECT: simplification of the synthesis process and reduction of the prime cost of amide nitrilotrismethylenephosphonic acid ammonium salt.

2 cl, 1 tbl, 3 ex

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RU 2 442 788 C1

Authors

Bobrovitskij Evgenij Afanas'Evich

Podsevalov Pavel Viktorovich

Dates

2012-02-20—Published

2010-11-17—Filed