The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1977
Filed:
May. 19, 1975
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07B / ;
U.S. Cl.
CPC ...
260 / ; 2605 / ; 260 / ;
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.