Process for producing a melamine-urea product

Claim 1

THE PROCESS FOR THE PRODUCTION OF A MELAMINE-UREA MIXTURE WHICH COMPRISES INJECTING UREA INTO A MOLTEN UREA-MELAMINE MIXTURE CONTAINING A BORON COMPOUND AS A CATALYST AND UNDER PRESSURE OF UREA PYROLYSIS PRODUCTS IN THE GAS PHASE, REMOVING MOLTEN UREA-MELAMINE PRODUCT CONTAINING ABOUT 4% TO ABOUT 15% BY WEIGHT UREA FROM THE REACTOR, CONTROLLING THE RATES OF INJECTING THE UREA AND REMOVING SAID PRODUCT TO MAINTAIN THE UREA CONTENT IN THE MIXTURE AT ABOUT 4% TO ABOUT 15% BY WEIGHT OF THE MELAMINE IN THE MIXTURE, AND CORRELATING THE TEMPERATURE AND PRESSURE OF THE MIXTURE SO THAT THEIR NUMERICAL VALUES LIE WITHIN THE TRIANGULAR TEMPERATUREPRESSURE DIAGRAM ABC OF FIGURE 1 OF THE DRAWINGS, WHEREIN A REPRESENTS 333*C. AND 2000 P.S.I. PRESSURE; B REPRESENTS 333*C. AND 5000 P.S.I. PRESSURE, AND C REPRESENTS 288*C. AND 5000 P.S.I. PRESSURE.