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:
Dec. 02, 1980
Filed:
Jun. 06, 1979
John A Bartoszek, Lake Charles, LA (US);
Louis C Hirdler, Lake Charles, LA (US);
Olin Corporation, New Haven, CT (US);
Abstract
Concentrated slurries of cyanuric acid are produced in a process which comprises feeding urea to a hot solvent. In the hot solvent, the urea is pyrolyzed to produce a reaction mixture of cyanuric acid particles in the solvent. Agitation of the reaction mixture forms a suspension of cyanuric acid particles. At cyanuric acid concentrations of from about 20 to about 50 percent by weight, the cyanuric acid particles are settled from the suspension to produce a concentrated slurry phase and a supernatent solvent phase. The concentrated slurry phase is then separated from the solvent phase. The process produces concentrated cyanuric acid slurries which minimize the complexity and cost of solvent recovery, reduces energy requirements for heating the reaction mixture and recovering the solvent, and maximizes heat transfer efficiency during the pyrolysis reaction.