Patent ID: 9376350
Filing Date: 2016-06-28
CPC Classification: B01J,C05B,C05C,C05D,C05G

Claim Text:
1. A process of making a urea fertilizer having reduced ammonia volatilization upon application to soil, comprising the following steps: granulating ammonia volatilization inhibiting compounds containing one or more of boron and iodine, with a binder to produce volatilization inhibitor particles, wherein the ammonia volatilization inhibiting compounds are selected from the group consisting of disinfectants, cationic surfactants, weak acids and sulfonamides; screening the inhibitor particles to a preselected particle size; spraying melted urea onto the surface of the inhibitor particles to produce a coating on the inhibitor particles; granulating the coated inhibitor particles with sprayed melted urea to produce granules of urea coated central volatilization particles; and cooling the granules.