Process for recovery of urea from its phenolic solution

Details Process for recovery of urea from its phenolic solution Process for recovery of urea from its phenolic solution

1975-05-19

1977-08-23

Peters, G. O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260555R, 260 965R, C07C10200, C07B 2100

Patent

active

040440524

ABSTRACT:
A process for recovery of urea from a phenolic solution thereof which comprises adding an organic solvent selected from the group consisting of aliphatic amides, ethers, carbon disulfide and dimethylsulfoxide to the said phenolic solution and collecting the separated crystals of urea from the resultant mixture. The process is characteristic in recovering urea in the solid state without the use of water but a particular organic solvent.

REFERENCES:
patent: 1830859 (1931-10-01), Schotte et al.
patent: 2549372 (1951-04-01), Fetterly
patent: 2642378 (1953-06-01), Barnes
patent: 3462498 (1969-08-01), Lowe et al.
patent: 3855195 (1974-12-01), Suda et al.
Merck Index - 6th Ed. - (1952) - pp. 988, 739, 282, 283.
Weissberger, "Physical Methods", Part I, 3rd Ed., (1959) p. 347.
Condensed Chemical Dictionary - Hawley - 1974.

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