INVESTIGATIONS OF CRYSTAL MODIFICATION OF UREA
Abstract
Modification of the crystal habit of urea by crystallization from water in the presence of additives, and from a wide range of organic solvents was investigated. Addition compounds of urea with alicyclic ketones, hitherto unreported, were discovered. The favorable physical properties of these addition compounds were found to make them suitable intermediates in the preparation of urea in a free-flowing, non-caking form. The parameters for the laboratory manufacture of this type of urea were examined as a basis for a large-scale continuous process. An investigation into the possible use of this type of urea as a host for the selective absorption of certain organic solvents was made.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1968
- Accession Number
- AD0670421
Entities
People
- R. J. Williams