Patent ID: 11964924
Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for producing a spherical urea-C2-C4 aldehyde condensate fertilizer granule, the granule comprising a methylene urea and isobutylidenediurea, or a methylene urea and a derivative of isobutylidenediurea, the method comprising:
(a) combining the methylene urea and the isobutylidenediurea or derivative of isobutylidenediurea and water to form a mixture;
(b) extruding the mixture;
(c) forming spheres from the mixture by spheronizing with a spheronizer; and
(d) drying the spheres to form the spherical urea-C2-C4 aldehyde condensate fertilizer granule,
wherein the spherical urea-C2-C4 aldehyde condensate fertilizer granule has an average crush strength of greater than 1.3 kgf/granule, and wherein the ratio of methylene urea to the isobutylidenediurea or the derivative of isobutylidenediurea is 75:25 to 50:50.