Process for making cyanuric acid

Details Process for making cyanuric acid Process for making cyanuric acid

1985-01-28

1986-05-06

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D25132

Patent

active

045873348

ABSTRACT:
The disclosure relates to a process for making granulated cyanuric acid. To this end, the disclosure provides for cyanuric acid granules having the particle size targeted for the final product to be used as feed material, for the said feed material, urea and water to be used in a ratio by weight of 1.5-3:1:0.04-0.08 and to be made into a preliminary mixture, and for the mixture to be allowed to stand over a period of 10 to 20 hours prior to heating it with continuous agitation to temperatures of 270.degree. to 340.degree. C. over as long a period as necessary to effect the condensation of the urea to cyanuric acid.

REFERENCES:
patent: 2712491 (1955-07-01), Boatright
patent: 3154545 (1964-10-01), Symes et al.
patent: 3761474 (1973-09-01), Mesiah
patent: 3810891 (1974-05-01), Lee
patent: 3953443 (1976-04-01), Ohata et al.
patent: 4474957 (1984-10-01), Sato et al.

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