C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/547.6
C07C 273/18 (2006.01) C07C 275/06 (2006.01)
Patent
CA 1074333
ABSTRACT OF THE DISCLOSURE A method for the preparation of N-methyl ureas is disclosed, the improvement consisting in that the reaction is a catalytic hydrogenation of a mixture of an urea and formaldehyde, carried out in a single-step run and in a defi- nitely acidic environment, contrarily to the conventional art, under high temperatures and pressures. Temperatures of 50°C- 150°C and pressures of from 20 to 150 kgs./sq.cm. are the pre- furred field of action.
267040
Iori Giuseppe
Romano Ugo
Na
Snamprogetti S.p.a.
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